BWI to SAN flight delays & on-time performance
Nonstop flights from Baltimore/Washington International Thurgood Marshall Airport to San Diego International 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 Baltimore (BWI) to San Diego (SAN) arrived on time 76% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.3% were cancelled, and 6% 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 9pm did worst (47%).
- Saturday was the most reliable day to fly (81% on time) and Sunday the least (71%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (41%).
Which airline is most on time from BWI to SAN?
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 | 76% | 1.3% | 14 min | 5.5% | 1,159 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am86%191 flights
- 7am90%62 flights
- 8am88%95 flights
- 9am79%108 flights
- 11am84%53 flights
- 12pm80%49 flights
- 1pm67%43 flights
- 2pm75%21 flights
- 3pm56%78 flights
- 4pm52%88 flights
- 6pm84%78 flights
- 7pm74%127 flights
- 8pm68%98 flights
- 9pm47%51 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday74%1.6% cancelled
- Tuesday77%1.9% cancelled
- Wednesday76%0.0% cancelled
- Thursday79%0.0% cancelled
- Friday72%0.5% cancelled
- Saturday81%1.6% cancelled
- Sunday71%3.8% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)41%
- Late-arriving aircraft33%
- Air traffic control & airport congestion22%
- Extreme weather4%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather87%
- Airline (crew, maintenance, cleaning, fueling)13%
- Air traffic control & airport congestion0%
- Security0%
BWI to SAN: common questions
- How often are BWI to SAN flights on time?
- 76% 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 Baltimore to San Diego cancelled?
- 1.3% of scheduled flights were cancelled (15 of 1,159).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 50 min behind schedule on average, and 5.5% of flights were an hour or more late.
- How long is taxi time at BWI?
- Flights on this route spent 15 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SAN to BWI — 78% on time
More flights from Baltimore
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BWI → SAN, nonstop flights by US airlines that report to the DOT. How we calculate this.