Baltimore (BWI) to San Diego (SAN): On-Time Performance
Data through July 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 51% in June 2026. Across the full period the route averages 74% on-time against a national 78%. Morning departures also hold up better than evening ones (85% vs 66%), which matters most in the rough months.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 3.2
- last 12 months
- Duration
- 5h 36m
- scheduled
- Distance
- 2,295 mi
Best airline from BWI to SAN
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 79% | 18 min | 0.0% | 63 |
| Southwest Airlines | 74% | 15 min | 1.1% | 2,121 |
Monthly on-time trend
Best time to fly from BWI to SAN
Aim for departures around 6 a.m. (87% on-time); avoid 9 p.m. departures (40%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 15 min |
| Tuesday | 76% | 12 min |
| Wednesday | 75% | 15 min |
| Thursdaybest | 77% | 14 min |
| Friday | 73% | 16 min |
| Saturday | 75% | 15 min |
| Sunday | 70% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft35%
- Airline operations40%
- National airspace system21%
- Weather4%
- Security1%
Frequently asked questions
- How often are flights from BWI to SAN delayed?
- 26% of BWI–SAN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 15 minutes.
- Which airline is most reliable from BWI to SAN?
- Spirit Airlines has the best on-time record on this route at 79%, based on 63 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 6 a.m. have the best record (87% on-time), while departures around 9 p.m. have the worst (40%). 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 36m over 2,295 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are BWI to SAN flights cancelled?
- 1.1% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from BWI to SAN?
- June 2026 was the roughest month in this dataset, with only 51% of arrivals on time. The best was November 2024 at 88%. If your dates are flexible, that 37-point gap is worth planning around.
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Based on 2,184 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.