“What’s the very best airline?”
It is one of many questions we get requested essentially the most right here at TPG.
On one hand, it may be a difficult one to reply. In any case, every of us has our personal private journey preferences and desires and may weigh every thing from how inexpensive an airline is to how family-friendly its insurance policies are.
However we additionally imagine there’s an goal, data-driven method to determine the very best U.S. airline.
Annually, we analyze a slew of statistics, information and outcomes to rank the ten largest U.S. carriers from greatest to worst.
Our hope: to arm vacationers with the very best data in deciding which airline to fly with.
The 2025 winner: Delta Air Strains for the seventh straight 12 months.
Simply because it has every year since 2019, Delta topped all different U.S. airways after we in contrast every throughout an enormous array of metrics from 4 key classes.
To come back to our rating, we tallied up how usually the foremost airways had flight delays and cancellations and calculated which carriers had the very best fee of mishandling checked luggage and mobility gadgets.
We seemed on the variety of cities they served within the U.S. and internationally.
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Moreover, our crew of consultants evaluated carriers on a few of the components frequent vacationers worth most: the worth of an airline’s frequent flyer miles, the scope and price of its lounge portfolio, how its household seating insurance policies stack up and whether or not it has Wi-Fi — and whether or not that web service is free for patrons.
After months of crunching the numbers, this is how the total outcomes panned out.
General rankings and key takeaways
Delta’s seventh straight victory
If there is a theme in Delta’s seventh straight 12 months of topping our airline rankings, it is that consistency issues.
Delta did not dominate in each class. The truth is, there have been loads of areas the place different airways scored increased, from affordability to how far its SkyMiles go in comparison with different airways’ award forex.
What put Delta excessive in 2025 was its power throughout all the classes we analyzed, from the constantly sturdy, on-time airline operation it runs to the expertise prospects have on the airport and of their seats.
Different prime takeaways from this 12 months’s outcomes:
- United Airways climbed to second place on this 12 months’s rankings. United improved in two key classes versus a 12 months prior: general reliability and passenger expertise, the place it completed third general. The Chicago-based service as soon as once more led our loyalty rankings, lifted by its Premier elite standing advantages and exhaustive companion community via the Star Alliance — and this does not even embody the lately introduced “Blue Sky” settlement with JetBlue that is set to start out rolling out later this 12 months.
- Two different airways made positive factors in our 2025 rankings: Southwest Airways and Hawaiian Airways. Notably, Southwest jumped two spots from final 12 months to 3rd place in our rankings after turning within the {industry}’s lowest cancellation fee in 2024. It additionally maintained its lead on value and attain, thanks, partly, to the dearth of add-on charges it charged prospects in 2024. However subsequent 12 months may very well be a really totally different story, given Southwest simply launched checked bag charges and, in latest months, tightened up a few of its most customer-friendly insurance policies. Will these modifications trigger the airline to lose floor in subsequent 12 months’s rankings? Time will inform.
- American Airways noticed the most important year-over-year decline within the rankings. The truth is, it fell three spots to seventh general, topping solely a trio of funds airways. That fall got here because the airline has trailed prime opponents Delta and United in profitability of late and seemingly been in catch-up mode to these carriers relating to high-end choices like business-class seats, cabin options and lounges. American’s new Flagship Suites ought to assist, however the airline additionally scored poorly on its dealing with of luggage and mobility gadgets.
- Extremely-low-cost carriers Allegiant Air, Spirit Airways and Frontier Airways once more occupied the underside tier of our rankings. They had been hindered by their myriad of add-on charges, loyalty packages that did not measure up and fewer onboard options and facilities than their bigger opponents. May alternative lie forward? These airways try, unveiling every thing from first-class seats and a loyalty glow-up at Frontier to new product choices at Spirit and a fast-growing fleet of brand-new planes at Allegiant.
Greatest US airways for reliability
Since attending to your vacation spot safely and on time are (in that order) two of essentially the most basic components of a superb journey, reliability carries the strongest weight of our 4 classes: 30% of the general rankings.
Airways confronted a tall activity in 2024 when airports stuffed up with record-setting crowds, together with what proved, on the time, to be every of the ten busiest days ever at U.S. airports.
Our reliability rankings keep in mind:
- Timeliness: How regularly a flight on the airline was delayed
- Cancellations: How regularly a flight on the airline was canceled
- Bumps/involuntary denied boardings: How regularly an airline bumped a traveler towards their will on an oversold flight
- Baggage: How regularly an airline mishandled a chunk of checked baggage
- Wheelchairs/scooters: How regularly an airline mishandled a mobility gadget
Delta’s reliability power in comparison with its friends in 2024 got here regardless of a tough week final July, throughout which the airline canceled 1000’s of flights over a number of days as a consequence of a world IT outage at cybersecurity agency Crowdstrike.
However inside days, the airline received again to operating the on-time operation it is traditionally been celebrated for.
Positive factors by Hawaiian and Southwest on this 12 months’s general rankings had been due, largely, to massive bounce backs in operational efficiency.
2024 noticed Hawaiian regain its hallmark reliability, a 12 months after the tragic wildfires in Maui made cancellations unavoidable.
For Southwest’s half, its industry-leading cancellation fee was 17% higher than 2023 and helped quell reminiscences of its high-profile vacation meltdown in 2022.
Industrywide, the cancellation fee ticked up in 2024 from 2023 however was worlds higher than 2022, when chaotic scenes at airports had been rampant.
12 months | Industrywide flight cancellation fee |
---|---|
2024 | 1.36% |
2023 | 1.29% |
2022 | 2.71% |
Supply: U.S. Division of Transportation knowledge
This is how the general reliability class rankings shook out:
1. Delta Air Strains
2. Hawaiian Airways
3. Allegiant Air
4. Southwest Airways
5. United Airways
6. JetBlue
7. Alaska Airways
8. Spirit Airways
9. American Airways
10. Frontier Airways
American and Alaska, the 2 lowest-ranked community carriers within the reliability class, had been hindered, partly, by decrease marks when it got here to mishandled baggage, wheelchairs and scooters.
American additionally completed close to the underside of the pack when it got here to dealing with mobility gadgets. The service’s dealing with of wheelchairs was a part of what drew a lawsuit from the Biden administration final 12 months.
Spirit ranked lowest in that metric, misplacing a median of two wheelchairs and scooters for each 100 it dealt with in 2024, in response to DOT knowledge.
Frontier improved its general rating by 12% over final 12 months’s report however maintained its perennial last-place end when it got here to reliability.
It additionally had an astonishingly excessive fee of passengers bumped in comparison with its opponents.
Airline | Passengers emplaned in 2023-24 | Passengers involuntarily bumped |
---|---|---|
Delta | 362.6 million | 4 |
Allegiant | 34.3 million | 0 |
Frontier | 59.9 million | 17,111 |
Supply: DOT knowledge
To be clear: Getting bumped on Frontier stays statistically unlikely, at 0.02% of passengers who boarded flights during the last two years. But, throughout that point, a passenger boarding a flight on Frontier was 25,000 instances extra more likely to be bumped than on Delta.
Greatest US airways for the journey expertise
Our expertise class evaluates airways on a number of components that may make a giant distinction in how fulfilling a visit is with a specific airline.
On this class, we examined:
- Cabin options: What you may expertise on board, together with Wi-Fi, seat pitch/width and inflight leisure
- Lounges: How widespread (and quite a few) an airline’s lounges are and the way inexpensive they’re to entry
- Household: How nicely an airline caters to households touring with kids
- Buyer satisfaction: The speed at which passengers complain to the DOT in regards to the service
Alaska Airways topped our outcomes centered on the journey expertise this 12 months, which had been weighted at 1 / 4 of the general rankings.
The Seattle-based service edged out Delta right here, delivering the very best marks of any airline when it got here to family-friendly insurance policies, which evaluated options like assured seats collectively, free lounge entry for kids and early boarding for vacationers with children.
Alaska trailed solely Southwest when it got here to the bottom fee of buyer complaints filed with the DOT.
Moreover, it topped our metrics centered on the worth you’d get, on common, via a paid annual lounge membership: For $795, an Alaska Airways Lounge+ enrollment will get you entry to 61 home golf equipment, together with Alaska’s branded lounges, American Airways Admirals Golf equipment and a handful of United Membership services, amongst others.
We must always word, all three of the above airways — and their opponents — supply complimentary methods to achieve lounge entry via sure cobranded bank cards.
Learn extra: Greatest bank cards for lounge entry
Lounges stay entrance and heart in airways’ battle to win prospects, and 2024 introduced us a few of the swankiest golf equipment but within the U.S. — most notably Delta’s all-new assortment of business-class-only Delta One Lounge services that debuted in New York, Los Angeles and Boston.
Nonetheless, overcrowding stays a hurdle all through the {industry}, whilst extra golf equipment — and larger ones — have popped up. We have already seen Delta, United and Capital One tighten entry guidelines this 12 months, and it is a protected guess extra such modifications may very well be coming.
Onboard expertise
One different facet of the journey expertise the place Alaska was not a number one airline: economic system cabin options. JetBlue led the way in which there, helped by continued power in its core product that options its signature seatback screens, free Wi-Fi and extra beneficiant legroom.
Nonetheless, Delta and United had been a detailed second and third, because of an onboard arms race, of kinds, involving important investments in inflight leisure, Bluetooth connectivity and free Wi-Fi.
This is how airways fared within the full journey expertise class rankings:
1. Alaska
2. Delta
3. United
4. Hawaiian
5. American
6. JetBlue
7. Southwest
8. Allegiant
9. Spirit
10. Frontier
Trying forward, we count on to see improved scores throughout the board for the journey expertise airways supply. That is as a result of carriers are making important investments in onboard tech, slashing or solely reducing Wi-Fi charges and upgrading planes with higher seats and premium merchandise.
Look no additional than American’s latest announcement that it’ll be a part of Delta, United and JetBlue in providing free web searching for its loyalty members in 2026.
Greatest US airways for value and attain
What number of locations can an airline take you — and the way a lot will a visit hit your pockets?
That is the main focus of our “value and attain” class, which counted for 20% of our general rankings.
On this part, we analyzed a couple of components:
- Route community: What number of home airports an airline served, on common, domestically (weighted 80%) and internationally (weighted 20%)
- Affordability: How far (in distance) you’ll be able to fly for the cash you are paying, based mostly on monetary knowledge from the Bureau of Transportation Statistics
- Ancillary charges: How a lot a typical passenger pays in bag and alter/cancellation charges
Southwest led the way in which on this class, because of its huge home community and — paradoxically — the minuscule add-on charges it charged prospects in 2024 in comparison with its opponents.
However Southwest could not get the identical raise on this class subsequent 12 months and past after ending its long-standing “luggage fly free” coverage subsequent month and implementing a primary economic system fare.
Price
When it got here to affordability, we judged airways on how a lot they charged passengers, on common, to fly 1,000 miles, utilizing fare income reported by carriers to the Bureau of Transportation Statistics in 2024.
Industrywide, the price to fly 1,000 miles rose barely in 2024 to $235.27 — up about 1% from 2023, nicely beneath the extent of inflation.
As normal, the funds airways — led by Spirit and Frontier — led the way in which in affordability based mostly on the fare alone.
However as any traveler who has flown aboard low-cost airways is aware of, the bottom fare is barely a part of the entire value you pay to fly.
Whereas the “Large Three” airways (American, Delta and United) collected a whopping $3.9 billion in checked bag charges in 2024, the funds carriers far exceeded their legacy opponents when it comes to the common charges passengers paid per journey.
Attain
After all, value is not the one issue when selecting an airline. The place it may take you issues, too.
To guage airways’ route networks, we evaluated what number of cities, on common, they served every month. We checked out home attain and, for the primary time in 2025, factored in worldwide route networks, too — which means airways received rewarded for inventive routes like United’s flights to Marrakech, Morocco, and Alaska’s to La Paz, Mexico.
American led the way in which with its expansive home community, in response to DOT knowledge. United led with its worldwide attain, as proven in knowledge supplied to TPG from aviation analytics agency Cirium.
One focal point: Although it might appear like United narrowly beat American on worldwide community, it flew a lot farther general and with far larger planes.
Should you add up what number of complete seats United flew internationally and multiply it by the variety of miles these seats traveled (a key {industry} metric referred to as “out there seat miles”), you may see that United lapped its closest competitor by tens of billions of accessible seat miles because of its strong flight choices to far-flung locations in Australia, New Zealand, varied African international locations and extra.
American, in the meantime, relied closely on its power in Mexico, the Caribbean and Central and South America.
This is how the total value and attain class rankings shook out:
1. Southwest
2. American
3. United
4. Delta
5. Spirit
6. Alaska
7. Allegiant
8. Hawaiian
9. JetBlue
10. Frontier
Greatest US airways for loyalty
Loyalty, after all, is a class we pay shut consideration to right here at TPG. Weighted at 25%, we analyzed a couple of components:
- Frequent flyer program: How rewarding an airline’s loyalty program is predicated on TPG’s valuations, elite standing, cobranded bank cards, companion airways and expiration insurance policies
- Award availability: How simple and invaluable it’s to redeem your rewards throughout fashionable journey instances
Although American Airways AAdvantage miles and Alaska Airways Mileage Plan miles tied as essentially the most invaluable loyalty forex of any U.S. airline in our newest month-to-month valuations, it was truly United that received our loyalty class.
Serving to United was its relative power throughout lots of the classes we analyzed.
The service’s United MileagePlus program had essentially the most incomes and redeeming companions because of its participation within the expansive Star Alliance. It had essentially the most switch companions of any airline except for JetBlue, with which it was tied for having the third Most worthy loyalty forex.
There was exceptional consistency in our loyalty class when in comparison with final 12 months’s outcomes:
1. United
2. Alaska
3. American
4. Delta
5. JetBlue
6. Southwest
7. Hawaiian
8. Spirit
9. Frontier
10. Allegiant
The one change was Alaska and its Mileage Plan program leapfrogging American’s AAdvantage program.
There are alternatives for extra motion to come back over the following 12 months, although.
- United lately made it tougher to earn Premier elite standing.
- Southwest lately devalued each its incomes and redeeming of Southwest Fast Rewards factors.
- Alaska and Hawaiian are anticipated to launch a brand new joint loyalty program in August after merging final 12 months.
- Low-cost carriers are including extra beneficiant perks for frequent flyers, in hopes of attractive extra prospects to their packages. Most notably, some Frontier Miles elite standing tiers lately gained a companion go, and elite members will quickly be eligible for upgrades to its new first-class seats.