BOS → SFOBoston to San Francisco

live

Direct flights from Boston (BOS) to San Francisco (SFO): 117 nonstop departures observed each week across 18 airlines. The median arrival is 8 minutes early. No cancellations were recorded across the 3 tracked flights. The nonstop covers 4,341 km, an estimated 6 hours 4 minutes in the air. Measured by Pro Flight Search from live flight boards at Boston and San Francisco. Updated 6 September 2026 at 17:47 UTC.

BOS Boston smooth · +0
SFO San Francisco smooth · +0
4,341 km · ~6h 04m est.
dep bank 00:30–22:38117x weekly
Running clean · 18 airlines · 117x weekly · nonstop
100 / 100

route health from live BOS and SFO delay boards

Median arrival delay is −8 min. 0 of 3 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−8 minacross the last 3 operated legs
Flight time~6h 04mestimated from route distance
Weekly departures117x18 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Air ChinaAir New ZealandANA (All Nippon Airways)Asiana 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 days
Air ChinaCA

Flights CA7222 11:15 We Sa

Air New ZealandNZ

Flights NZ9020 09:30 Mo Th Fr Su · NZ9023 11:15 daily · NZ9019 12:43 daily · NZ9021 14:57 daily

ANA (All Nippon Airways)NH

Flights NH7003 11:15 daily

Asiana AirlinesOZ

Flights OZ9530 21:44 daily

Delta Air LinesDL

Flights DL977 07:35 daily · DL860 10:05 daily · DL1655 17:05 daily

El Al AirlinesLY

Flights LY4578 varies Mo We Th Su · LY4227 varies Mo We Th Su

Etihad AirwaysEY

Flights EY8007 00:30 Sa · EY8391 19:49 Sa · EY8330 20:56 Mo Tu Th Fr Su · EY8024 22:31 Mo Tu Th Su

IcelandairFI

Flights FI7897 00:30 daily · FI7899 varies daily · FI7969 11:34 daily

ITA AirwaysAZ

Flights AZ4376 19:40 Tu We Th Su · AZ4406 19:40 daily · AZ4385 21:44 Mo We Th Fr Su

Japan AirlinesJL

Flights JL5938 00:30 daily

JetBlue AirwaysB6

Flights B61333 varies daily · B6833 08:00 daily · B61833 varies daily · B6233 15:50 daily

Korean AirKE

Flights KE3255 11:09 daily

LATAM ChileLA

Flights LA6139 20:51 daily · LA7024 20:51 Su

Singapore AirlinesSQ

Flights SQ1539 19:22 daily

TAP Air PortugalTP

Flights TP4399 00:30 daily · TP4401 20:56 daily

United AirlinesUA

Flights UA2441 06:00 Mo Th Fr Su · UA304 07:45 daily · UA726 09:20 daily · UA1074 11:34 daily

Virgin AustraliaVA

Flights VA8311 09:30 Mo Th Fr Su · VA8310 11:15 daily · VA8314 12:43 daily · VA8313 14:57 daily

WestJetWS

Flights WS7983 11:09 daily · WS7646 13:39 daily

History

operated legs · board outcomes
09-06B61333dep +0 → arr−8
09-06B6833dep +0 → arr−2
09-06FI7899arrived−8

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
BOSBoston +0 min smooth 🌤 mostly cloudy · NE 6 kt Full BOS delay board →
SFOSan Francisco +0 min smooth 🌤 scattered clouds · W 11 kt Full SFO delay board →

Weather lens

Current conditions put the pressure at SFO: 59% odds of a 15+ minute delay and around +24 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Boston to San Francisco route actually runs

Pro Flight Search records official board updates for nonstop BOS to SFO 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 — Boston (BOS) to San Francisco (SFO) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/BOS-SFO
How we measure this →

BOS to SFO questions

Is BOS–SFO running on time right now?

Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on BOS–SFO?

Operators schedule morning departures around 06:00 and evening departures around 17:05 from BOS. Earlier flights typically land before destination-airport delays accumulate later in the day; check the SFO delay card to confirm conditions when you'd arrive.

How long is the flight from BOS to SFO?

Great-circle distance is 4,341 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 336–402 min gate-to-gate on this route.

How often does BOS–SFO fly?

18 carriers operate this route, around 331 flights a week between them. Compare carrier days and times in the airline list above.