What's the cheapest day to fly in January?

We don't have enough real fare data for January to identify a cheapest weekday.

Is January a good time to visit Boston?

Check the real weather data above for Boston in January — we don't have crowd or event data to add beyond that.

Should I book now or wait?

There's no reliable way to predict whether a specific fare will rise or fall. If the real January fares above already fit your budget, booking removes the risk of the price changing.

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Flights from San Francisco to Boston in January

Planning a trip from San Francisco to Boston in January? Find the best flights and seasonal tips. Flight time: 5h 36m.

Flying in January

Boston typically sees daytime highs around 4°C and overnight lows around -3°C in January, based on the last 3 years. Expect roughly 146 mm of rain across the month.

Nearby airports

Near San Francisco

San Carlos Airport (SQL)16 km
Metropolitan Oakland International Airport (OAK)18 km
Norman Y. Mineta San Jose International Airport (SJC)49 km

Near Boston

Laurence G Hanscom Field (BED)26 km
Manchester Boston Regional Airport (MHT)72 km
Worcester Regional Airport (ORH)72 km

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More about this route

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FAQs — San Francisco to Boston in January

We don't have real fare data for January on this route yet — use the search box above for live prices.