Flights Boston → San Diego
BOS → SAN
How long is the flight from Boston to San Diego?
The flight from Boston (BOS) to San Diego (SAN) takes 5h 36m on average. That is the median time recorded across 5 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
Route overview
The flight route from Boston to San Diego operates with a high level of punctuality, achieving on-time performance for 79% of its total 407 flights. The average delay is approximately 9.9 minutes, and the route utilizes both Boeing 737 and Airbus A320 aircraft. San Diego International Airport, which has been in operation since 1928, serves as a major hub with over 22 million passengers annually.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Boston (BOS) → San Diego (SAN) route is operated by American Airlines, Alaska Airlines, JetBlue Airways. Across 1123 flights monitored in recent months, 79% arrived on time (within 15 min of schedule), with an average delay of 11 minutes. The cancellation rate is 1.96%. FlightGuard's average computed risk is 25.3/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At San Diego the average ATFM delay is 5.5 minutes (main cause: atfm). Departing from Boston the average ATFM delay is 5.5 minutes.
Heading to San Diego: what to expect in this direction
Flying from Boston (BOS) to San Diego (SAN) heads west for about 4,156 km, a flight time of roughly 5h 36m.
Departures from Boston on this leg cluster in the midday window: about 56% of BOS-SAN flights take off then.
Air-traffic congestion: departing Boston the average ATFM delay is 5.5 min (atfm); arriving into San Diego it is 5.5 min (atfm).
Across 1,123 tracked BOS-SAN flights, 79% left on time with an average delay of 11 min and a 2.0% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Alaska Airlines (AS) | 85% | -1 min | 0.5% |
| American Airlines (AA) | 79% | 6 min | 1.1% |
| JetBlue Airways (B6) | 79% | 7 min | 0.1% |
Airlines operating BOS-SAN
Airports
Frequently asked questions about BOS-SAN
The flight from Boston (BOS) to San Diego (SAN) takes 5h 36m on average. That is the median time recorded across 5 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the Boston (BOS) -> San Diego (SAN) route, on-time performance is 79% with an average delay of 11 minutes, based on 1123 tracked flights.
The cancellation rate on Boston-San Diego is 1.96% across 1123 monitored flights.
The route is operated by 3 airlines: American Airlines, Alaska Airlines, JetBlue Airways.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at San Diego, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
