SAN to BWI flight delays & on-time performance
Nonstop flights from San Diego International Airport to Baltimore/Washington International Thurgood Marshall Airport · 2,295 miles · Aug 2025 – Jul 2026
- SAN: Airport closed. Closed, expected to reopen Oct 11 at 13:00 UTC.
Key facts
- Flights from San Diego (SAN) to Baltimore (BWI) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 1.6% were cancelled, and 4% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 7am did best (90% on time); around 2pm did worst (31%).
- Saturday was the most reliable day to fly (89% on time) and Thursday the least (72%).
- The largest source of delay minutes was late-arriving aircraft (52%).
Which airline is most on time from SAN to BWI?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Southwest Airlines | 78% | 1.6% | 11 min | 4.2% | 1,160 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am90%238 flights
- 7am90%98 flights
- 10am89%19 flights
- 11am71%138 flights
- 12pm70%103 flights
- 1pm50%108 flights
- 2pm31%40 flights
- 3pm70%37 flights
- 4pm42%13 flights
- 9pm87%361 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday74%2.7% cancelled
- Tuesday83%0.6% cancelled
- Wednesday79%1.9% cancelled
- Thursday72%0.5% cancelled
- Friday78%1.6% cancelled
- Saturday89%0.8% cancelled
- Sunday74%2.5% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft52%
- Airline (crew, maintenance, cleaning, fueling)30%
- Air traffic control & airport congestion17%
- Security1%
- Extreme weather0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather72%
- Airline (crew, maintenance, cleaning, fueling)22%
- Air traffic control & airport congestion6%
- Security0%
SAN to BWI: common questions
- How often are SAN to BWI flights on time?
- 78% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from San Diego to Baltimore cancelled?
- 1.6% of scheduled flights were cancelled (18 of 1,160).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 45 min behind schedule on average, and 4.2% of flights were an hour or more late.
- How long is taxi time at SAN?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BWI to SAN — 76% on time
More flights from San Diego
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SAN → BWI, nonstop flights by US airlines that report to the DOT. How we calculate this.