Atlanta to Baltimore — airline reliability comparison
Southwest Airlines is the most reliable airline on the ATL to BWI route with a 80% on-time rate, compared to Frontier Airlines at 65%. Based on 6,978 flights tracked.
This route involves high-congestion airports, which can affect reliability regardless of airline.
Source: Bureau of Transportation Statistics. Updated October 2026.| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 80% | 1.5% | 60m | 6,978 |
| Delta Air LinesDL | 79% | 1.2% | 58m | 10,204 |
| Spirit AirlinesNK | 70% | 1.5% | 67m | 1,528 |
| Frontier AirlinesF9Worst | 65% | 2.6% | 71m | 2,545 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.