Which airlines have the most delayed flights?

In the 12 months through August 2026, JetBlue had the most late flights: 28.7% arrived 15 or more minutes late, against 18.9% for Delta Air Lines, the fewest. PSA, Envoy, Republic and SkyWest are regional airlines that fly under bigger airlines' names, such as American Eagle or United Express. Only the largest U.S. airlines report these numbers, for domestic flights.

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Key facts

Measure: % of flights arriving 15+ minutes late. Written from the data below.

  • JetBlue has the highest figure, 28.7%, followed by Spirit Airlines (28%) and Frontier Airlines (27.3%).
  • Delta Air Lines has the lowest figure, 18.9%, followed by Envoy Air (19%) and Hawaiian Airlines (19.2%).
  • The highest is 1.5 times the lowest.

This chart is one of the 50 in The U.S. in 50 charts, 2026, a yearly report of the key numbers on how the country is doing.

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Source and date

Source
U.S. Bureau of Transportation Statistics, Airline On-Time Performance (Reporting Carrier On-Time Performance, 1987–present)
License
Public domain (U.S. government work)
Data as of
Published

Citation

Chartly. “Which airlines have the most delayed flights?” Chart. Data: U.S. Bureau of Transportation Statistics, Airline On-Time Performance (Reporting Carrier On-Time Performance, 1987–present), https://www.transtats.bts.gov/DL_SelectFields.aspx?gnoyr_VQ=FGJ&QO_fu146_anzr=b0-gvzr (data as of August 31, 2026). https://chart.ly/charts/airline-delays (accessed November 4, 2026).

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The data

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The file has the numbers in this table, with the source, license and date. Please credit the source and Chartly. Developers can also get them as JSON (how).

Airline % of flights arriving 15+ minutes late
JetBlue 28.7
Spirit Airlines 28
Frontier Airlines 27.3
PSA Airlines 26.5
Allegiant Air 26.1
American Airlines 25.3
Southwest Airlines 24.3
Republic Airways 21.9
SkyWest Airlines 21.3
United Airlines 21.2
Alaska Airlines 20.3
Hawaiian Airlines 19.2
Envoy Air 19
Delta Air Lines 18.9

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