Boston to San Francisco

1 ways to travelfastest 6h 26mfly from €124
Photo: Joshua Sortino / Unsplash

How the cheapest fare moved

Sep 6: €134 €134 Aug 31 Sep 6 low €124 · high €160

Departure-day prices · February 2027 Boston → San Francisco

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Return-day prices · February 2027 San Francisco → Boston

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Best time to visit San Francisco — climate

Jan: ~15°C daytime, 2 rainy days 15° JanFeb: ~15°C daytime, 11 rainy days 15° FebMar: ~15°C daytime, 12 rainy days 15° MarApr: ~17°C daytime, 3 rainy days 17° AprMay: ~19°C daytime, 1 rainy days 19° MayJun: ~18°C daytime, 0 rainy days 18° JunJul: ~17°C daytime, 0 rainy days 17° JulAug: ~20°C daytime, 0 rainy days 20° AugSep: ~21°C daytime, 2 rainy days 21° SepOct: ~20°C daytime, 4 rainy days 20° OctNov: ~17°C daytime, 9 rainy days 17° NovDec: ~13°C daytime, 10 rainy days 13° Dec

Best value: Nov — fares from €137 and ~17°C daytime.

Flights from Boston to San Francisco start around €124 (typically 1 stop). Range seen recently: €124–156, based on 9 fares found by travellers.

Fly (from €124)
6h 26mduration
€124–156recent fares
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Cheapest cached fares Boston → San Francisco; typically 1 stop (e.g. AS). · Based on 9 fares found by travellers in the last 48h

Cheapest round trips to San Francisco

Fares found by travellers in the last 48 hours — refreshed daily.

Sep 22 – Sep 22 Southwest Airlines · 1 stop · 7h 00m €261 Book
Sep 25 – Sep 30 jetBlue · Direct · 6h 23m €267 Book
Oct 5 – Oct 10 Southwest Airlines · 2 stops · 8h 25m €283 Book
Oct 16 – Oct 20 Alaska Airlines · 1 stop · 8h 30m €298 Book
Oct 15 – Oct 20 jetBlue · Direct · 6h 30m €300 Book
Sep 8 – Sep 22 Southwest Airlines · 2 stops · 8h 20m €338 Book
Sep 11 – Sep 13 American Airlines · 1 stop · 7h 52m €379 Book
Nov 26 – Nov 29 Southwest Airlines · 1 stop · 7h 35m €407 Book

Weather in San Francisco

Sun 🌫️ 20° 13° 💧1%
Mon ☀️ 26° 12° 💧0%
Tue ☁️ 28° 13° 💧1%
Wed ☁️ 32° 21° 💧6%
Thu ☁️ 27° 20° 💧0%
Fri ☀️ 22° 17° 💧1%
Sat ☀️ 20° 16° 💧3%

In Feb, San Francisco typically sees ~16°C daytime highs and 9 rainy days.

Where to stay in San Francisco

3★+ hotels from €181/night (33 hotels sampled, ~3 weeks out).

Hotel Caza Fisherman's Wharf hotel · San Francisco
from €181/night★ 4
Staypineapple, An Elegant Hotel, Union Square hotel · San Francisco
from €189/night★ 4
InterContinental Mark Hopkins San Francisco by IHG hotel · San Francisco
from €193/night★ 4

Good to know

Time difference-3h
Time in the air6h 23m

Things to do in San Francisco

Top-rated tours and tickets from €53 — book ahead for the popular ones.

Tours and tickets provided by Viator (a Tripadvisor company). Some links earn Stayonomy a commission.

About San Francisco

The centerpiece of the Bay Area, San Francisco is one of the most visited cities in the world, and with good reason. The cultural center of northern California, San Francisco is renowned for its mixture of scenic beauty and unique culture that makes it one of the most vibrant and desirable cities in the nation, if not the world. Sandwiched between the San Francisco Bay and the Pacific Ocean on a small square of land seven miles (11 km) on each side, San Francisco offers a wealth of treasures for the visitor, from the windswept and often foggy b…

Read the full San Francisco guide

Guide content from Wikivoyage contributors (CC BY-SA).

Round out the trip

Popular from Boston

Cheapest destinations travellers searched recently — refreshed daily.

Flight prices are real fares travellers found in the last 48 hours, refreshed daily — the booking site confirms the final price. Train, bus and ferry fares are shown on the operators' booking sites. Weather data by Open-Meteo; exchange rates: ECB reference. Data updated 2026-09-06. Some links earn Stayonomy a commission at no cost to you.