Alaska AirlinesAS
live
Direct flights from San Diego (SAN) to Boston (BOS): 28 nonstop departures observed each week across 4 airlines. The median arrival is on schedule. No cancellations were recorded across the 4 tracked flights. The nonstop covers 4,156 km, an estimated 5 hours 50 minutes in the air. Measured by Pro Flight Search from live flight boards at San Diego and Boston. Updated 19 October 2026 at 06:20 UTC.
Today, SAN → BOS
Sun 18 Oct · local times- 20:25 B62120JetBlue Left 20:25 Landed 06:33
- 20:34 AS255Alaska Left 20:34 BOS est. 05:07In the air · sched 05:21
- 21:53 DL571Delta Est. 22:35Departure not confirmed by the board BOS est. 07:14 +39sched 06:35
- · AS389Alaska Airlines Departed Landed 16:50 −17
- · B6220JetBlue On schedule BOS est. 22:13sched 22:58
Checked SAN board 22:04 · BOS board 02:20
SAN
San Diego
busy · +19
BOS
Boston
smooth · +14
4,156 km · ~5h 50m est.
Running clean · 4 airlines · 28x weekly · nonstop
78 / 100
route health from live SAN and BOS delay boards
Median arrival delay is +0 min. 0 of 4 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+0 minacross the last 4 operated legs
Flight time~5h 50mestimated from route distance
Weekly departures28x4 direct airlines on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska AirlinesDelta Air LinesJetBlue AirwaysSouthwest Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at SAN: 56% odds of a 15+ minute delay and around +19 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the San Diego to Boston route actually runs
Pro Flight Search records official board updates for nonstop SAN to BOS flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — San Diego (SAN) to Boston (BOS) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SAN-BOS
SAN to BOS questions
Is SAN–BOS running on time right now?
Mostly on schedule. The departure side at SAN is the weaker end, route health score 78/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on SAN–BOS?
Operators schedule morning departures around 08:15 and evening departures around 20:25 from SAN. Earlier flights typically land before destination-airport delays accumulate later in the day; check the BOS delay card to confirm conditions when you'd arrive.
How long is the flight from SAN to BOS?
Great-circle distance is 4,156 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 323–386 min gate-to-gate on this route.
How often does SAN–BOS fly?
4 carriers operate this route, around 48 flights a week between them. Compare carrier days and times in the airline list above.
.