San Diego (SAN) to Baltimore (BWI): On-Time Performance
Data through July 2026
The calendar drives reliability on SAN–BWI. May 2025 flights landed on schedule 93% of the time, but July 2026 dropped to 56% — a gap of 37 points. Across the full period the route averages 78% on-time against a national 78%.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 3.2
- last 12 months
- Duration
- 4h 57m
- scheduled
- Distance
- 2,295 mi
Best airline from SAN to BWI
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlinesmost reliable | 78% | 12 min | 1.1% | 2,141 |
| Spirit Airlines | 56% | 26 min | 1.6% | 64 |
Monthly on-time trend
Best time to fly from SAN to BWI
Aim for departures around 6 a.m. (90% on-time); avoid 1 p.m. departures (53%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 15 min |
| Tuesday | 85% | 7 min |
| Wednesday | 79% | 8 min |
| Thursday | 72% | 16 min |
| Friday | 76% | 15 min |
| Saturdaybest | 87% | 9 min |
| Sunday | 74% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft47%
- Airline operations28%
- National airspace system24%
- Security1%
Frequently asked questions
- How often are flights from SAN to BWI delayed?
- 22% of SAN–BWI 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 12 minutes.
- Which airline is most reliable from SAN to BWI?
- Southwest Airlines has the best on-time record on this route at 78%, based on 2,141 flights. 2 airlines flew SAN–BWI frequently enough to compare in this period.
- What is the best time of day to fly from SAN to BWI?
- Departures around 6 a.m. have the best record (90% on-time), while departures around 1 p.m. have the worst (53%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SAN to BWI?
- The scheduled SAN–BWI flight time averages 4h 57m over 2,295 miles. Actual arrival times vary — flights on this route land 15+ minutes late 22% of the time.
- How often are SAN to BWI 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 SAN to BWI?
- July 2026 was the roughest month in this dataset, with only 56% of arrivals on time. The best was May 2025 at 93%. If your dates are flexible, that 37-point gap is worth planning around.
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Based on 2,205 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.