As of October 2026, the most on-time U.S. airline is Endeavor Air at 85% on time. The least reliable is Frontier Airlines at 72%. The industry average is 79%.
Source: Bureau of Transportation Statistics, data through 2026-07. Updated October 2026.
Best & Worst U.S. Airlines for On-Time Flights
14 airlines ranked by on-time performance, best first.
#AirlineOn TimeCancel
1Endeavor Air9E
85%
2.0%
2
Republic AirwaysYX
84%
2.9%
3
Delta Air LinesDL
83%
1.2%
4
SkyWest AirlinesOO
81%
1.1%
5
United AirlinesUA
80%
1.2%
6
Alaska AirlinesAS
80%
1.3%
7
Southwest AirlinesWN
79%
0.8%
8
Hawaiian AirlinesHA
79%
1.0%
9
PSA AirlinesOH
77%
3.3%
10
American AirlinesAA
76%
1.5%
11
Spirit AirlinesNK
76%
2.1%
12
Allegiant AirG4
75%
0.9%
13
JetBlue AirwaysB6
72%
2.1%
14
Frontier AirlinesF9
72%
2.2%
Complaints = average complaints per 100K passengers (DOT Air Travel Consumer Report).
Key Takeaways
- Most reliable: Endeavor Air — 85% on time, avg 73 min delay when late
- Least reliable: Frontier Airlines — 72% on time, 2.2% cancellation rate
- Industry average: 79% on time across 14 airlines
- Gap: 13 percentage points separate the best from the worst
Data last updated October 2026. Source: Bureau of Transportation Statistics.