SFO → BOSSan Francisco to Boston

live

Direct flights from San Francisco (SFO) to Boston (BOS): 43 nonstop departures observed each week across 7 airlines. The median arrival is 4 minutes late. 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 San Francisco and Boston. Updated 28 October 2026 at 09:45 UTC.

Today, SFO → BOS

Wed 28 Oct · local times
  1. 07:00 AF8859Air France On scheduleGate C3 · T1 ·
  2. 07:00 DL400Delta On scheduleGate C3 · T1 BOS est. 15:41sched 15:45
  3. 07:00 VS1787Virgin Atlantic On scheduleGate C3 · T1 ·
  4. 07:30 B6434JetBlue On scheduleGate B18 · T1 ·
  5. 07:30 FI7832Icelandair On scheduleGate B18 · T1 ·
  6. 07:30 SQ1550Singapore Airlines On scheduleGate B18 · T1 ·
  7. 07:30 TP4394TAP Air Portugal On scheduleGate B18 · T1 ·
  8. 08:10 AZ4380ITA Airways Est. 08:21 +11Gate F16 · T3 ·
  9. 08:10 NZ9011Air New Zealand Est. 08:21 +11Gate F16 · T3 ·
  10. 08:10 UA2647United Est. 08:21 +11Gate F16 · T3 ·
  11. 08:10 VA8229Virgin Australia Est. 08:21 +11Gate F16 · T3 ·
  12. 10:40 NZ9015Air New Zealand On scheduleGate F21 · T3 ·
  13. 10:40 UA2356United On scheduleGate F21 · T3 ·
  14. 10:40 VA8309Virgin Australia On scheduleGate F21 · T3 ·
  15. 10:44 B61734JetBlue On scheduleGate B18 · T1 ·
  16. 10:44 FI7834Icelandair On scheduleGate B18 · T1 ·
  17. 12:14 B61034JetBlue On scheduleGate B21 · T1 ·
  18. 12:40 DL977Delta On scheduleGate C3 · T1 ·
  19. 12:40 KE6731Korean Air On scheduleGate C3 · T1 ·
  20. 12:40 VS2372Virgin Atlantic On scheduleGate C3 · T1 ·
  21. 12:45 CA7307Air China On scheduleGate F19 · T3 ·
  22. 12:45 NH7330ANA (All Nippon Airways) On scheduleGate F19 · T3 ·
  23. 12:45 NZ9010Air New Zealand On scheduleGate F19 · T3 ·
  24. 12:45 UA1372United On scheduleGate F19 · T3 ·
  25. 12:45 VA8305Virgin Australia On scheduleGate F19 · T3 ·
  26. · B6134JetBlue On schedule BOS 06:44scheduled

Checked SFO board 02:20 · BOS board 05:45

SFO San Francisco busy · +16
BOS Boston smooth · +5
4,341 km · ~6h 04m est.
dep bank 07:00–23:2043x weekly
Running clean · 7 airlines · 43x weekly · nonstop
84 / 100

route health from live SFO and BOS delay boards

Median arrival delay is +4 min. 0 of 3 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+4 minacross the last 3 operated legs
Flight time~6h 04mestimated from route distance
Weekly departures43x7 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Delta Air LinesIcelandairITA AirwaysJapan 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
Delta Air LinesDL

Flights DL400 07:00 daily · DL977 12:40 daily · DL860 15:00 daily · DL1655 21:54 Mo Th Fr Su

IcelandairFI

Flights FI7830 10:20 Mo Tu We Th Fr Su

ITA AirwaysAZ

Flights AZ4380 08:10 We Su

Japan AirlinesJL

Flights JL5892 varies daily

JetBlue AirwaysB6

Flights B6434 07:59 daily · B61734 varies daily · B61034 11:44 daily · B61234 14:37 daily

Singapore AirlinesSQ

Flights SQ1544 varies daily

United AirlinesUA

Flights UA371 07:00 Mo Th Fr Su · UA2647 08:15 daily · UA2356 10:50 daily · UA1372 12:10 daily

History

operated legs · board outcomes
10-27NZ9018departed+4
10-27UA1665dep +4 → arr−5
10-27VA8306departed+4

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
SFOSan Francisco +16 min busy 🌤 few clouds · N 0 kt Full SFO delay board →
BOSBoston +5 min smooth 🌤 clear · NNW 7 kt Full BOS delay board →

Weather lens

Current conditions put the pressure at SFO: 49% odds of a 15+ minute delay and around +13 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the San Francisco to Boston route actually runs

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

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

SFO to BOS questions

Is SFO–BOS running on time right now?

Smooth skies ahead. The departure side at SFO is the weaker end, route health score 84/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on SFO–BOS?

Operators schedule morning departures around 07:00 and evening departures around 21:15 from SFO. 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 SFO to BOS?

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 SFO–BOS fly?

7 carriers operate this route, around 128 flights a week between them. Compare carrier days and times in the airline list above.