Best Airline: ATL to PWM
Atlanta to Portland — airline reliability comparison
Delta Air Lines is the most reliable airline on the ATL to PWM route with a 80% on-time rate. Based on 2,022 flights tracked.
This route involves high-congestion airports, which can affect reliability regardless of airline.
Source: Bureau of Transportation Statistics. Updated October 2026.ATL to PWM Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|
| Delta Air LinesDLBest | 80% | 1.0% | 61m | 2,022 |
Flying out of ATL? 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.