image of plan on runway with LA in background
A Boeing 757 plane operated by Delta Airlines.
  • Delta Air Lines topped The Points Guy's 2024 best US airlines list for the sixth consecutive year.
  • TPG's rankings assess four broad categories: reliability, experience, cost and reach, and loyalty.
  • Interestingly, ultra-low-cost carrier Allegiant Air scored beat out Delta in overall reliability.

The busy summer travel season is here, and airlines are working hard to keep their planes and people moving without much headache to the customer.

However, some are better than others.

Travel website The Points Guy published its annual list of the 10 best airlines in the US on Wednesday. It used 2023 data from airlines and the federal government to analyze four broad categories: reliability, experience, cost and reach, and loyalty.

Delta Air Lines took the top spot for the sixth year in a row, followed by Alaska Airlines and United Airlines. This year, Delta carrier also earned titles from The Wall Street Journal, JD Power, and Cirium.

While Delta ranked first overall for its consistency across the four categories, TPG noted it lost points for affordability and loyalty — the latter likely resulted from its unpopular SkyMiles program changes.

Further, Delta only won in one area: timeliness. This was one of five factors under the reliability umbrella.

Interestingly, ultra-low-cost carrier Allegiant Air won for reliability thanks to its low rate of cancellations and mishandled baggage and wheelchairs. It also tied with Delta for zero involuntary bumps.

Allegiant ranked seven out of 10 in the overall rankings due to its no-frills business model and poor delay rate. Still, it beat ULCC competitors Frontier Airlines and Spirit Airlines, which ranked last and second-to-last, respectively.

To their credit, the ULCCs have recently moved in a more premium direction, with Frontier offering "business" class-like seats and Spirit dropping all change and cancel fees.

Sitting in the middle of the pack are American Airlines, Southwest Airlines, JetBlue Airways, and Hawaiian Airlines, which didn't see much movement to their rank from 2022.

"Overall, 2023 was a year of relative stability and continued recovery from the last of the post-coronavirus lockdown hiccups," TPG said.

Here's a closer look at TPG's airline rankings for 2024. It noted customer satisfaction data only reflects the first five months of the year due to reporting delays from the Department of Transportation.

10. Frontier Airlines

A Frontier Airlines plane lands at the McCarran International Airport in Las Vegas on Thursday, Feb. 27, 2020.
Frontier Airlines ranked dead last in TPG's 2024 rankings. The carrier has been trying to lure in customers with more premium offerings.

2022 Rank: 10

Best areas: Affordability

Worst areas: Timeliness, cancellations, involuntary bumps, customer satisfaction, and bag and change fees

9. Spirit Airlines

Spirit Airlines jetliners on the tarmac at Fort Lauderdale Hollywood International Airport.
Spirit sits at the bottom of the pack with Frontier, losing a spot from 2023.

2022 Rank: 8

Best areas: Affordability

Worst areas: Mishandled baggage and mobility devices, family travel, and route network

8. Allegiant Air

Planes from Allegiant Air.
Allegiant ranks low because of its barebones planes but has good reliability.

2022 Rank: 8

Best areas: Involuntary bumps and mishandled baggage and mobility devices

Worst areas: Timeliness, cabin features, and family travel

7. Hawaiian Airlines

Hawaiian Airlines
Hawaiian lost points for its network as it mostly flies around Hawaii, the South Pacific, Asia, and the US West Coast.

2022 Rank: 6

Best areas: Involuntary bumps

Worst areas: Route network

6. JetBlue Airways

JetBlue Airways A320 at Gate 16 at New York-JFK.
JetBlue ranked high for cabin experience but low for cost and reach and reliability.

2022 Rank: 7

Best areas: Cabin features

Worst areas: Timeliness, cancellations

5. Southwest Airlines

Southwest Airlines plane on the runway at Love Field in Dallas, TX
Southwest won for cost and reach thanks to its lower fares, good cabin experience, no fees, and robust route network.

2022 Rank: 5

Best areas: Bags and change fees

Worst areas: Lounges

4. American Airlines

American Airlines
American maintained its fourth-place position but improved in areas, like timelineness.

2022 Rank: 4

Best areas: Route network, award availability (flights that can be booked with points or miles)

Worst areas: Mishandled baggage and affordability

3. United Airlines

United Airlines Boeing 787-10 Dreamliner aircraft as seen flying, landing and taxiing at Athens International Airport Eleftherios Venizelos ATH at the Greek capital.
United was first for loyalty in TPG's rankings.

2022 Rank: 2

Best areas: Frequent flyer program, route network, involuntary bumps

Worst areas: Cancellations, affordability

2. Alaska Airlines

An Alaska Airlines plane.
According to TPG, Alaska was first in customer satisfaction. However, that data only reflects the first five months of the year, not the summer or winter travel periods.

2022 Rank: 3

Best areas: Timeliness, cancellations, lounges, family travel, customer satisfaction

Worst areas: Mishandled baggage and mobility devices

1. Delta Air Lines

A Delta Air Lines plane.
Delta Air Lines was first in TPG's 2024 airline rankings.

2022 Rank: 1

Best areas: Timeliness and involuntary bumps

Worst areas: Affordability

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