Baltimore (BWI) to San Diego (SAN): On-Time Performance
Data through May 2026
When you fly BWI to SAN matters as much as anything else about the booking: the route swung from 88% on-time in November 2024 to just 58% in July 2024. 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 67%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 1.0%
- Flights/day
- 3.1
- last 12 months
- Duration
- 5h 37m
- scheduled
- Distance
- 2,295 mi
Best airline from BWI to SAN
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 83% | 14 min | 0.0% | 93 |
| Southwest Airlines | 75% | 14 min | 1.0% | 1,995 |
Monthly on-time trend
Best time to fly from BWI to SAN
Aim for departures around 7 a.m. (88% on-time); avoid 9 p.m. departures (39%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 15 min |
| Tuesdaybest | 78% | 11 min |
| Wednesday | 75% | 15 min |
| Thursday | 76% | 14 min |
| Friday | 76% | 14 min |
| Saturday | 75% | 14 min |
| Sunday | 70% | 16 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft36%
- Airline operations40%
- National airspace system20%
- Weather3%
- Security1%
Frequently asked questions
- How often are flights from BWI to SAN delayed?
- 25% of BWI–SAN 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 14 minutes.
- Which airline is most reliable from BWI to SAN?
- Spirit Airlines has the best on-time record on this route at 83%, based on 93 flights. 2 airlines flew BWI–SAN frequently enough to compare in this period.
- What is the best time of day to fly from BWI to SAN?
- Departures around 7 a.m. have the best record (88% on-time), while departures around 9 p.m. have the worst (39%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BWI to SAN?
- The scheduled BWI–SAN flight time averages 5h 37m over 2,295 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are BWI to SAN flights cancelled?
- 1% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from BWI to SAN?
- July 2024 was the roughest month in this dataset, with only 58% of arrivals on time. The best was November 2024 at 88%. If your dates are flexible, that 30-point gap is worth planning around.
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Based on 2,088 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.