San Francisco to Boston

1 ways to travelfastest 6h 15mfly from €159
Photo: jacob Licht / Unsplash

How the cheapest fare moved

Sep 19: €150 €150 Sep 14 Sep 19 low €150 · high €217

Departure-day prices · December 2026 San Francisco → Boston

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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.

Return-day prices · December 2026 Boston → San Francisco

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Best time to visit Boston — climate

Jan: ~0°C daytime, 7 rainy days JanFeb: ~2°C daytime, 8 rainy days FebMar: ~10°C daytime, 8 rainy days 10° MarApr: ~15°C daytime, 12 rainy days 15° AprMay: ~19°C daytime, 13 rainy days 19° MayJun: ~25°C daytime, 9 rainy days 25° JunJul: ~29°C daytime, 14 rainy days 29° JulAug: ~26°C daytime, 7 rainy days 26° AugSep: ~23°C daytime, 9 rainy days 23° SepOct: ~17°C daytime, 8 rainy days 17° OctNov: ~10°C daytime, 11 rainy days 10° NovDec: ~2°C daytime, 9 rainy days Dec

Best value: Sep — fares from €214 and ~23°C daytime.

Flights from San Francisco to Boston start around €159 (typically 1 stop). Range seen recently: €159–217, based on 5 fares found by travellers.

Fly (from €159)
6h 15mduration
€159–217recent fares
Book
Cheapest cached fares San Francisco → Boston; typically 1 stop (e.g. WN). · Based on 5 fares found by travellers in the last 48h

Cheapest round trips to Boston

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

Oct 13 – Oct 14 Alaska Airlines · 1 stop · 7h 16m €280 Book
Sep 30 – Oct 3 Southwest Airlines · 1 stop · 7h 00m €316 Book
Oct 1 – Oct 8 American Airlines · 1 stop · 7h 09m €428 Book
Oct 8 – Oct 12 Frontier Airlines · 2 stops · 9h 22m €460 Book
Oct 9 – Oct 12 American Airlines · 1 stop · 7h 07m €469 Book
Dec 22 – Dec 28 jetBlue · Direct · 5h 34m €490 Book

Weather in Boston

Sat ☁️ 17° 10° 💧0%
Sun 🌦️ 17° 10° 💧81%
Mon 🌦️ 17° 13° 💧89%
Tue ☁️ 15° 13° 💧1%
Wed 🌦️ 15° 14° 💧2%
Thu 🌦️ 15° 14° 💧31%
Fri 🌦️ 14° 10° 💧39%

In Dec, Boston typically sees ~2°C daytime highs and 9 rainy days.

Where to stay in Boston

3★+ hotels from €303/night (33 hotels sampled, ~3 weeks out).

The Inn at Longwood Medical hotel · Boston
from €303/night★ 3
The Revolution Hotel hotel · Boston
from €342/night★ 3
Hilton Garden Inn Boston Logan Airport hotel · Boston
from €363/night★ 3

Good to know

Time difference+3h
Time in the air5h 34m

Things to do in Boston

Top-rated tours and tickets from €31 — book ahead for the popular ones.

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

About Boston

A city of history and tradition, Boston offers a proud legacy of culture, education, and numerous sporting championships. The "shining city on a hill"s independent spirit has been displayed to the world ever since colonists were angry over a British tax on their beloved tea and dumped shiploads of it into the harbor in protest. In the early 1600s, the peninsula in Massachusetts that would become known as Boston was controlled by Native Americans until John Smith (English soldier, explorer, colonial governor, Admiral of New England, and author) …

Read the full Boston guide

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

Round out the trip

Popular from San Francisco

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 2026-09-19. Some links earn Stayonomy a commission at no cost to you.