Atlanta (ATL) to Baltimore (BWI): On-Time Performance
Data through May 2026
Atlanta (ATL) to Baltimore (BWI) effectively runs on two schedules. In September 2025, 88% of arrivals were on time; in July 2024 that fell to 55% — a 33-point seasonal swing. Across the full period the route averages 75% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 65%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 1.8%
- Flights/day
- 15
- last 12 months
- Duration
- 1h 48m
- scheduled
- Distance
- 577 mi
Best airline from ATL to BWI
4 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlinesmost reliable | 80% | 14 min | 1.8% | 3,505 |
| Delta Air Lines | 76% | 16 min | 1.5% | 5,723 |
| Spirit Airlines | 68% | 22 min | 2.5% | 646 |
| Frontier Airlines | 62% | 29 min | 2.7% | 1,501 |
Monthly on-time trend
Best time to fly from ATL to BWI
Aim for departures around 6 a.m. (92% on-time); avoid 9 p.m. departures (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 72% | 21 min |
| Tuesday | 80% | 15 min |
| Wednesdaybest | 82% | 12 min |
| Thursday | 76% | 15 min |
| Friday | 74% | 18 min |
| Saturday | 75% | 18 min |
| Sunday | 68% | 22 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft37%
- Airline operations40%
- National airspace system19%
- Weather5%
Frequently asked questions
- How often are flights from ATL to BWI delayed?
- 25% of ATL–BWI flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 18 minutes.
- Which airline is most reliable from ATL to BWI?
- Southwest Airlines has the best on-time record on this route at 80%, based on 3,505 flights. 4 airlines flew ATL–BWI frequently enough to compare in this period.
- What is the best time of day to fly from ATL to BWI?
- Departures around 6 a.m. have the best record (92% on-time), while departures around 9 p.m. have the worst (61%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ATL to BWI?
- The scheduled ATL–BWI flight time averages 1h 48m over 577 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are ATL to BWI flights cancelled?
- 1.8% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from ATL to BWI?
- July 2024 was the roughest month in this dataset, with only 55% of arrivals on time. The best was September 2025 at 88%. If your dates are flexible, that 33-point gap is worth planning around.
Explore related pages
- Return route: BWI to ATL on-time stats
- Hartsfield Jackson Atlanta International Airport departure performance
- Baltimore/Washington International Thurgood Marshall Airport airport reliability
- Delta Air Lines on-time record
- Southwest Airlines on-time record
- Frontier Airlines on-time record
- Spirit Airlines on-time record
More routes from ATL
Based on 11,375 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.