Recently, we saw JetBlue Airways and United Airlines announce plans to launch a partnership, which will be known as “Blue Sky.” This partnership includes frequent flyer reciprocity, potential slot swaps, and more. The idea is that it’s supposed to start slow, and grow over time.
Well, ahead of this partnership taking flight, one competitor has filed an objection, raising concerns about what this partnership will mean for the competitive landscape.
In this post:
Spirit demands investigation of United & JetBlue partnership
Spirit has filed a complaint with the Department of Transportation (DOT), demanding an extension of the review period for the JetBlue and United partnership, and requesting that all details be made available for public review, with a period for public comment.
Spirit points out how when the American and JetBlue Northeast Alliance was being reviewed in 2021, United filed comments strongly supporting public access to the details of the agreement, and allowing a period for public comments. So Spirit believes the same should apply here.
Spirit acknowledges that limited information has been released about the United and JetBlue “Blue Sky” partnership, but fears that it raises serious competition and public interest questions, similar to the Northeast Alliance. The company goes on to claim that based on what is publicly available, “implementation of these agreements appear to constitute an anticompetitive unfair method of competition that must be prohibited.”
Here’s what the filing goes on to claim:
At a high level, the proposed “Blue Sky” link-up between United and JetBlue creates the same anti-competitive incentives present in the NEA. JetBlue, enticed by the benefit to its customers of United’s far larger global network, will become a de facto vassal of United. Despite a rote assertion that the carriers will “continue to manage and price their networks independently,” JetBlue’s network decisions, on both overlap and non-overlap routes, will certainly be affected by United’s wishes and a “combined” approach to capacity management. JetBlue will need to purchase more expensive United miles to offer the United connectivity (e.g., on United’s international long-haul routes, as well as to large parts of the domestic US not served by JetBlue) to JetBlue loyalty program members. That incremental cost must necessarily be covered by higher JetBlue fares.
Finally, the tie-up also promises coordination on high-value corporate accounts and, more importantly, helps perpetuate the unchanging lack of access in both New York area and Boston airports to new entrants and limited incumbents offering competitive prices to the public. In short, this anti-competitive tie-up involving a dominant legacy carrier will neutralize the competitive benefit of an existing low-fare competitor (JetBlue), will raise fares, and will tend to weaken other value airlines, such as Spirit and others, by siphoning off customers attracted by access to the United loyalty program.

Does Spirit have a point about this partnership?
It’s pretty standard for airlines to object to partnerships between other carriers, and to try and increase regulatory scrutiny. Of course they raise these objections when it’s to their advantage, and try to brush off any concerns when it favors them.
Does Spirit have a point? Yes and no, I’d say. I don’t think there’s much merit to the main part of Spirit’s complaint, which is that the frequent flyer partnership is anticompetitive, since it means JetBlue will have to buy United miles, and therefore increase fares.
That’s pretty baseless, and with that logic, any and all loyalty collaborations are anticompetitive. I’d argue these frequent flyer agreements largely benefit consumers, by providing more options.
Now, the slot swap that we may see some time down the road (in 2027 and beyond) is the more concerning regulatory issue. The idea is that this will allow United to return to New York Kennedy Airport (JFK). We don’t yet have details on what exactly that will entail, but it’s totally fair for regulators to investigate that closely. I just don’t think we’re there yet.
One thing Spirit is absolutely right about is that these kinds of partnerships weaken the unaligned value carriers that don’t have partnerships. That’s absolutely true, but I’m not sure there’s a solution there, other than “if you can’t beat ’em, join ’em.”
There’s no denying that the economics of the US airline industry have evolved in a significant way over the years. At this point, airfare is essentially subsidized by lucrative co-brand credit card agreements. But the reason that profits are so concentrated among a few airlines is because scale is needed in order to make loyalty programs lucrative.
This has made it virtually impossible for smaller, low cost carriers to survive, since they can’t rely on the billions in profits that the legacy airlines earn with their loyalty programs.
But what’s the solution there, really? Should we stop letting credit card companies subsidize airfare, and just pay more? No, I don’t think that helps us.
If you ask me, we need to stop being so opposed to industry consolidation. The goal shouldn’t be to have as many airlines in business as possible. Instead, the goal needs to be to have as much overall industry capacity as possible with the major carriers, which are able to leverage loyalty programs to turn a profit. Right now we have the “big four” (American, Delta, Southwest, and United), and we’d benefit from there being additional consolidation that gets us to the “big six” or so.
As consumers, we can’t have it both ways — we can’t have our airfare both subsidized by credit card agreements, while also not wanting anything with low cost carriers to change. They’re hemorrhaging money for a reason, and no one has a good solution that doesn’t involve consolidation, other than “do better.”

Bottom line
Spirit is objecting to the JetBlue and United partnership, claiming it’s anticompetitive. To start, Spirit is demanding more public transparency about what exactly this partnership will entail, plus a period for public comment.
Spirit argues that a loyalty collaboration is anticompetitive, which I don’t agree with. The airline also argues that the potential slot swap could be anticompetitive, and I can see merit to that claim, or at least, to it being investigated more closely.
The bigger issue is that being a small, independent carrier in the United States just really isn’t viable anymore, and so many people are in denial about that. Spirit is right that these kinds of partnerships harm low cost carriers, but that’s because they need to be find ways to scale, and not because we should artificially prevent other partnerships (especially when one of those airlines is also struggling).
What do you make of Spirit’s objections to the United and JetBlue partnership?
Why wouldn’t an Alaska / JetBlue tie up make the most sense? Seattle / JFK hubs to tackle Asia / Europe flights respectively.
of course it makes the most sense for AS and B6 to combine.
And, as much as UA wants to think it has outfoxed everyone else, it is very possible that AS could choose to acquire B6 and get it approved long before UA could get the time of day at the DOJ.
UA simply wants to try to recover from its strategic failure in leaving JFK and from the FAA's decision to shrink EWR's...
of course it makes the most sense for AS and B6 to combine.
And, as much as UA wants to think it has outfoxed everyone else, it is very possible that AS could choose to acquire B6 and get it approved long before UA could get the time of day at the DOJ.
UA simply wants to try to recover from its strategic failure in leaving JFK and from the FAA's decision to shrink EWR's capacity, both of which will leave DL the largest airline in NYC.
Competitively, it would be very bad for the public for any of AA, DL or UA to gain anything from B6 but UA is clearly desperate enough that they will try.
but let's remember that AS has a long ways to go to profitably integrate HA esp. if DL stays on top of them in the international markets where AS wants to grow.
Repeating the same thing in BOS and NYC where DL is by far larger might not be the smartest thing for AS to do.
Really I think what JetBlue's lesson they learned and what they're attempting to do w/ the UA partnership, is that loyalty progammes at the future of airline profitability.
Alaska has been successful on various fronts because they offer award partnerships and interline with many many airlines, even before they were in Oneworld, which offered an extremely sticky passenger base because flying from SEA to Asia for 60k miles in business class is insane value.
The...
Really I think what JetBlue's lesson they learned and what they're attempting to do w/ the UA partnership, is that loyalty progammes at the future of airline profitability.
Alaska has been successful on various fronts because they offer award partnerships and interline with many many airlines, even before they were in Oneworld, which offered an extremely sticky passenger base because flying from SEA to Asia for 60k miles in business class is insane value.
The secondary aspect of deeper partnerships and marketing/selling itineraries with partners has been beneficial since it fills their seats and gets their customers familiar with their international airline partners too.
I really think network wise B6 and AA would've been my preferred combo, but if UA keeps B6 alive, I won't be unhappy.
Thank you Spirit Airlines. I was just about to contact New York Attorney General Letitia James about this slot swap scheme.
The issue is that it's doubtful that either Spirit or Jetblue can make it as a standalone entity. The US domestic airline industry demands you either be very large or have a unique niche. Neither Spirit or Jetblue has either.
So the government needs to either allow a merger/joint venture where some employees will continue to have a job or let the airline completely fail, everyone loses a job, or a TWA like Chapter 7...
The issue is that it's doubtful that either Spirit or Jetblue can make it as a standalone entity. The US domestic airline industry demands you either be very large or have a unique niche. Neither Spirit or Jetblue has either.
So the government needs to either allow a merger/joint venture where some employees will continue to have a job or let the airline completely fail, everyone loses a job, or a TWA like Chapter 7 asset sale where more employees would lose a job than a merger.
So pick your poison.
JetBlue had a unique niche, called Mint, but they threw it all away.
JetBlue's advantage was that it could offer lie-flat premium seats to more than just BOS/NY to SF/LA.
They had FLL on the East Coast + various other West Coast destinations beyond the BOS/NY and SF/LA niche.
They kept having terrible ontime performance, didn't expand their loyalty programme, and ran a generally mediocre operation
I said when the B6/UA deal was announced, there are uncompetitive elements including in the joint sales aspect of the arrangement which will happen early in the cooperation and then UA's stated intention to release space at EWR for B6 to grow; EWR is not slot controlled and it is anti-competitive for 2 airlines to coordinate schedules at EWR or any other airport. Slot leases and swaps are acceptable.
Yes, the deal should be...
I said when the B6/UA deal was announced, there are uncompetitive elements including in the joint sales aspect of the arrangement which will happen early in the cooperation and then UA's stated intention to release space at EWR for B6 to grow; EWR is not slot controlled and it is anti-competitive for 2 airlines to coordinate schedules at EWR or any other airport. Slot leases and swaps are acceptable.
Yes, the deal should be reviewed. If it is all above board, no harm will be done.
and UA is still neck in neck w/ DL for the top two airlines in NYC. Any combination involving the top 3 carriers in any market should require government scrutiny
Blah, blah, blah. The current administration doesnt care about any of this. Kirby has already paid his dues and Delta will be the loser. Too bad, Timmy.
The current administration doesnt care about any of this, but a federal court in Boston probably will.
first, as much as some people repeat over and over again that the current administration doesn't care about antitrust enforcement, there isn't a single case inside or outside of the airline industry that suggests a change in what has been fairly consistent policy other than a heightened bent against business under the last administration.
and it is not just the President that rules on antitrust policy and many states can and will object because it...
first, as much as some people repeat over and over again that the current administration doesn't care about antitrust enforcement, there isn't a single case inside or outside of the airline industry that suggests a change in what has been fairly consistent policy other than a heightened bent against business under the last administration.
and it is not just the President that rules on antitrust policy and many states can and will object because it is their citizens that pay the price for consolidation of the airline industry.
Bob,
and the winner IS Delta. Combined with the reduced capacity at EWR - which has shifted the largest airline in NYC title to DL - and the fact that DL is the largest airline at both JFK and BOS and the largest legacy carrier at FLL - DL is well-positioned to pick up whatever B6 can't carry. As much as UA loves to talk about how it will put all of the low cost carriers out of business -which the DOJ has certainly noted - DL actually has put more pressure on a weak carrier than anything that UA could hope to do - and DL doesn't grandstand about it.
"Combined with the reduced capacity at EWR - which has shifted the largest airline in NYC title to DL"
Except by the normal Airline size metric, capacity, where United is 24% bigger in NYC in 2025.
But live your dream... Facts have rarely stopped you.
How far a plane flies does not impact the number of passengers it can board.
The Port Authority DOES publish passenger boardings and it shows very clearly that DL has taken the lead in the NYC market that started EVEN BEFORE the full-scale runway closure.
UA will likely ALWAYS generate more revenue and fly more ASMs. but you can't accept that profit margin just might be higher on shorter flights than on international long flights.
...How far a plane flies does not impact the number of passengers it can board.
The Port Authority DOES publish passenger boardings and it shows very clearly that DL has taken the lead in the NYC market that started EVEN BEFORE the full-scale runway closure.
UA will likely ALWAYS generate more revenue and fly more ASMs. but you can't accept that profit margin just might be higher on shorter flights than on international long flights.
We get that you desperately want to argue whatever statistic you can to keep from admitting that DL continues to grow its place in NYC but UA led in number of flights and passengers - on top of revenue and ASMs - and has lost the number of flights and passengers part.
none of which changes that it is beyond ludicrous to think that it is good for any consumer for DL or UA to grow by acquiring any part of any operator in NYC or any market where they or AA or WN are the top 3 carriers.
Again...
not arguing. Just facts no matter how many paragraphs you write to obfuscate a very normal industry size metric. I can accept lots of things though it appears normal industry metrics are something you simply do not accept. And there's a reason it's the normal industry metric, because DL has lots and lots of wasted slots on RJs doing very little except flights to nowhere like ALB and ORH because they have to...
Again...
not arguing. Just facts no matter how many paragraphs you write to obfuscate a very normal industry size metric. I can accept lots of things though it appears normal industry metrics are something you simply do not accept. And there's a reason it's the normal industry metric, because DL has lots and lots of wasted slots on RJs doing very little except flights to nowhere like ALB and ORH because they have to use the slot or use it.
Normal Size metric in the industry: Capacity.
United is 24% bigger than DL in 2025 across the three NYC airports.
But thank you for making my point about why Capacity is the normal industry size metric, as you note, United will likely always be the biggest in NYC for Capacity (normal size metric) and revenue (not a normal size metric but a good measuring stick for the utility of the DL vs UA networks in NYC).
Stick to facts, Tim.
well, yes, you are arguing. and you are cherrypicking the data that fits your narrative while excluding the metrics that you don't want to have to admit where UA has lost its leadership.
United led in NYC in ALL categories and has lost the title of number of flights to DL - which happened a couple years ago - and passengers boarded which happened in April.
those are the facts, all of them, including...
well, yes, you are arguing. and you are cherrypicking the data that fits your narrative while excluding the metrics that you don't want to have to admit where UA has lost its leadership.
United led in NYC in ALL categories and has lost the title of number of flights to DL - which happened a couple years ago - and passengers boarded which happened in April.
those are the facts, all of them, including the ones you don't want to admit.
I'm sure Spirit will be happy to call you to the witness stand to prove why United should not be allowed to engage in any commercial strategy with B6 or any other airline in NYC - so thank you for being persistent in touting UA's size, even if you can't admit the whole story.
ahh, yes. Me cherrypicking the industry standard metric for size, capacity, to explain to you why United is 24% bigger than Delta in 2025 in NYC.
You then reminding everyone why that metric is used, because it usually reflects very accurately another major size metric in a metro area, revenue. Where even you admit Delta will never be bigger or create more revenue across the three NYC airports vs United.
Sometimes it's just...
ahh, yes. Me cherrypicking the industry standard metric for size, capacity, to explain to you why United is 24% bigger than Delta in 2025 in NYC.
You then reminding everyone why that metric is used, because it usually reflects very accurately another major size metric in a metro area, revenue. Where even you admit Delta will never be bigger or create more revenue across the three NYC airports vs United.
Sometimes it's just best to admit you're wrong and move along, Tim.
Per seats, Delta has yet to produce a full year of having more seats across the three NYC airports which, again, is still a useless metric when Delta is just trying to hold on to slots by flying a couple times a day to Albany and ORH, among other examples.
I admire your unique and deranged desire to make everything Passport plum themed, but facts often get in your way.
Moving on from this kindergarten class on Airline Economics.
let me say it one more time since you can't stand to admit that I am right and so argue incessantly.
UA was the largest airline in NYC by flights, passengers, ASMs and revenue.
UA HAS LOST the first two titles.
ALL for-profit businesses are ranked first and foremost by revenue and then profits.
ASMs might be an airline specific metric that YOU want to cling to but it speaks volumes about UA that...
let me say it one more time since you can't stand to admit that I am right and so argue incessantly.
UA was the largest airline in NYC by flights, passengers, ASMs and revenue.
UA HAS LOST the first two titles.
ALL for-profit businesses are ranked first and foremost by revenue and then profits.
ASMs might be an airline specific metric that YOU want to cling to but it speaks volumes about UA that they can't turn their larger network size on an ASM basis into higher total revenue and profits; the only way they did it in the first quarter was by underpaying their employees by such a huge amount.
Their profits will either fall as they pay their employees more or have a highly unhappy workforce that will no longer believe the unicorns and rainbow narrative as they watch their peers make much more money.
and even if all you care about is ASM, all it takes is for DL to add a couple A350 flights to East and S. Asia and the ASM lead for UA is vanquished for good.
And it will happen, Max.
quit childishly arguing and just walk away.
Industry metric for size: Capacity
Winner by 24%? United.
Winner by seats in every year so far? United.
Revenue in NYC? Per Tim Dunn? United.
Profit? Most analysts (real ones, not you) constantly refer to EWR as one of the most profitable hubs in the country yet here you are trying some stupid new line out without any data.
Move along, tim.
you're embarrassing yourself.
This is really a...
Industry metric for size: Capacity
Winner by 24%? United.
Winner by seats in every year so far? United.
Revenue in NYC? Per Tim Dunn? United.
Profit? Most analysts (real ones, not you) constantly refer to EWR as one of the most profitable hubs in the country yet here you are trying some stupid new line out without any data.
Move along, tim.
you're embarrassing yourself.
This is really a stupid argument. You clearly said something that was just wrong and hate to admit when you're wrong.
It's really tragic to watch but entertaining to watch
ASMs are the metric YOU want to focus on so you don't have to deal w/ the reality that UA has lost 2 of the 4 titles it once held in NYC.
What Anthony said in the FCO/BCN thread highlights exactly what your problem is, Max.
You are incapable of admitting that two people can win and that is how NYC has operated for years between DL and UA and also the way AS...
ASMs are the metric YOU want to focus on so you don't have to deal w/ the reality that UA has lost 2 of the 4 titles it once held in NYC.
What Anthony said in the FCO/BCN thread highlights exactly what your problem is, Max.
You are incapable of admitting that two people can win and that is how NYC has operated for years between DL and UA and also the way AS and DL have existed in SEA.
Nothing is static and DL is not interested in allowing AS growing into international markets and DL has flawlessly grown its presence in NYC while AA, B6 and UA have all stumbled.
Again, all it takes is for DL to add a few flights from JFK to Asia and UA's lead in every metric will be over.
Instead of getting me primed to remind you how incapable you were of admitting that NYC is a divided market, I am simply waiting for DL to announce those flights to Asia which will invite the strongest response of how wrong you were on ALL counts.
I don't care in the least about the credit card/frequent flier considerations. What concerns me is turning New York into an effective duopoly between United and Delta. There's no universe where that's good for competition and the consumer unless landing slots start being auctioned off in rotating leases.
Right on point.
American has a hub in JFK that they choose to under-serve. That’s not United or Delta’s fault
This has pretty heavily covered in various blogs, particularly VFTW, but to paraphrase American's problem at JFK they put in too much to give up but don't have enough landing slots to succeed. That's why the AA/B6 partnership was so big a win for everyone. Well, everyone except Delta and United who suddenly faced stiffer competition in the NYC area market.
except the DOJ and the federal judge in BOS said that AA could have the deal that B6 and UA just announced - but AA decided to sue instead.
AA had more slots in NYC than DL in 2005 when DL committed to growing NYC.
AA wilted, DL managed to outgrow UA.
AA tried to run to B6 to bail AA out from its strategic failures and now UA is doing the same thing with a slightly different twist - but both strategies are competitively flawed and will fail.
Why hasn’t American Airlines objected as well yet?
With the constraints on NEA (from scheduling) and the Spirit-Jet Blue merger, I don't disagree with what Spirit is saying especially from swap of constrained spots at JFK to unconstrained spots at EWR.
Seems weird to write this article without mentioning the crucial context - that Jetblue and Spirit had a merger in place which was blocked by a federal judge.
Spirit DID try to 'join them,' and they were blocked from doing so
the DOJ blocked that deal because B6 would have taken out a lower cost and lower price competitor.
B6/UA does not propose some of the same problems that killed the NEA or B6/NK but it has its own issues as I noted above.
If we want a strong “Big 6,” then deals like United-JetBlue (or American-JetBlue, which all of the bloggers still obviously want) won’t work. You need to strengthen the JetBlues, Spirits, Frontiers, Breeze, Alaska, Avelos of the world. Maybe they can merge amongst themselves. But it is hard for me to see any of United, Delta, American or Southwest being allowed to buy another US airline in the near future by any administration.
This.
Every aviation-geek in the industry has argued that Alaska and JetBlue should merge. Spirit + Frontier or Spirit/Breeze and Frontier/Avelo could also be things.
But the Big3 absorbing any of them, should be avoided.