That’s where data comes in — and it can reveal the truth about which airlines are worth flying. MONEY compared hundreds of data points across the major domestic airlines — weighing 39 factors including the average cost, price changes, fees, customer experience, and on-time performance — to determine the country’s best (and worst). Here’s where everyone landed. 

1. Alaska Airlines

  • Avg. price per roundtrip flight: $407
  • Avg. price per kilometer flown: $0.16
  • Share of on-time arrivals: 82.70%

For the second year in a row, Alaska Airlines flew in to claim MONEY’s best domestic airline title.

Alaska boasts the highest customer service rating among U.S. airlines, according to Travel + Leisure, as well as some of the shortest delays. Value’s there too. The airline offers the second-lowest ticket fares among U.S. airlines, at about 16¢ per kilometer, according to Rome2Rio.

2. Southwest

  • Avg. price per roundtrip flight: $396
  • Avg. price per kilometer flown: $0.27
  • Share of on-time arrivals: 78.99%

3. Delta

  • Avg. price per roundtrip flight: N/A*
  • Avg. price per kilometer flown: N/A*
  • Share of on-time arrivals: 85.62%

4. Spirit

  • Avg. price per roundtrip flight: $254
  • Avg. price per kilometer flown: $0.15
  • Share of on-time arrivals: 80.63%

5. American

  • Avg. price per roundtrip flight: $353
  • Avg. price per kilometer flown: $0.24
  • Share of on-time arrivals: 78.03%

6. United

  • Avg. price per roundtrip flight: $417
  • Avg. price per kilometer flown: $0.33
  • Share of on-time arrivals: 79.77%

7. JetBlue

  • Avg. price per roundtrip flight: $389
  • Avg. price per kilometer flown: $0.32
  • Share of on-time arrivals: 70.59%

8. Frontier

  • Avg. price per roundtrip flight: $311
  • Avg. price per kilometer flown: $0.16
  • Share of on-time arrivals: 68.82%

Methodology

*The average roundtrip flight for Delta was $411.60 in 2017, according to Rome2Rio, but the data provider didn’t have the necessary data for 2018. Median airfares were used for Delta’s 2019 ranking calculation instead.

MONEY analyzed 1,600 data points for about 80 air carriers—the nine leading domestic airlines and about 70 of the largest international airlines. Price factors were weighed most heavily in determining the rankings.

Criteria included average cost per kilometer, average price of a coach flight, and year-over-year price changes; percentage of on-time arrivals and average length of delays; and customer satisfaction ratings for food, in-flight and customer service, value, comfort, loyalty programs, and in-flight entertainment. Criteria for domestic airlines also included baggage fees and flight change fees; canceled flights, delayed flights, and delayed flights due to carrier; overall experience rating, mishandled bags, and consumer complaints; and year-over-year improvements on all of the above.

Hawaiian Airlines was excluded from domestic airlines because of a substantial lack of data.


Data providers for all three rankings include Rome2Rio, FlightStats, Skytrax, Travel + Leisure, American Customer Satisfaction Index, U.S. Department of Transportation, J.D. Power, and the airlines. source

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