Alaska AirlinesAS
Flights AS390 08:03 Mo Tu We Th Fr Su · AS255 21:07 Mo Th Fr Sa Su
live
Direct flights from San Diego (SAN) to Boston (BOS): 45 nonstop departures observed each week across 4 airlines. 50% of the last 6 tracked flights arrived within 15 minutes of schedule. The median arrival is 16 minutes late. No cancellations were recorded across the 10 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 13 November 2026 at 14:16 UTC.
Today, SAN → BOS
Fri 13 Nov · local times- 08:03 AS390Alaska On scheduleGate 28 BOS est. 16:53 +12sched 16:41
- 09:25 WN4672Southwest On scheduleGate 113 BOS 17:50scheduled
- 11:41 B6620JetBlue On scheduleGate 121 ·
- 14:07 B6220JetBlue On scheduleGate 121 ·
Checked SAN board 05:38 · BOS board 09:16
SAN
San Diego
disrupted · +65
BOS
Boston
smooth · +0
4,156 km · ~5h 50m est.
Runs rough · 4 airlines · 45x weekly · nonstop
50% on time
of the last 6 tracked SAN → BOS flights arrived within 15 minutes
Median arrival delay is +16 min. 0 of 10 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+16 minacross the last 6 arrivals
Flight time~5h 50mestimated from route distance
Weekly departures45x4 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 10
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
Conditions are tightest at SAN: a 58% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +16 min. Both figures come from the two airports' delay records in similar weather. 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?
Some delays possible. The departure side at SAN is the weaker end, route health score 57/100. 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 08:03 and evening departures around 20:26 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 45 flights a week between them. Compare carrier days and times in the airline list above.
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