Southwest Airlines is the most reliable airline on the PHX to BWI route with a 81% on-time rate, compared to Frontier Airlines at 67%. Based on 4,091 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: PHX to BWI
Phoenix to Baltimore — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines81%
Frontier Airlines67%
PHX to BWI Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 81% | 0.7% | 44m | 4,091 |
| Frontier AirlinesF9Worst | 67% | 0.8% | 64m | 337 |
Route Overview
80%
Overall On-Time
46m
Avg Delay
0.7%
Cancel Rate
4,431
Total Flights
Flying out of PHX? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.