S$ 129 Cheap Flights from Boston to San Francisco (BOS-SFO)

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Cheap Flights from Boston to San Francisco starting at S$ 129

We've found these cheap flights for you. You can book one-way or return flight tickets.

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Cheapest time to fly from Boston to San Francisco

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.

Cheapest Airlines flying from Boston to San Francisco

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Sun Country Airlines

From S$ 114

Frontier Airlines

From S$ 115

Spirit Airlines

From S$ 160

Southwest Airlines

From S$ 211

American Airlines

From S$ 217

Alaska Airlines

From S$ 248

Jetblue Airways

From S$ 251

Delta Air Lines

From S$ 254

United Airlines

From S$ 274

ANA airlines

Find more flights and airlines

Alternative Routes from Boston to San Francisco

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Boston to San Francisco.

Cheapest
BOS
12:10
14h 48m
2 transfer
SFO
23:58
General Edward Lawrence Logan International Airport - San Francisco International Airport
Tue, Apr 30Sun Country Airlines
S$ 114
BNH
10:00
14h 28m
1 transfer
SFO
21:28
Hartford Barnes Airport - San Francisco International Airport
Tue, Apr 30Southern Airways Express, Llc
S$ 1,105
BNH
10:00
14h 28m
1 transfer
SFO
21:28
Hartford Barnes Airport - San Francisco International Airport
Tue, Apr 30Southern Airways Express, Llc
S$ 1,105
Find More Flights

Frequently Asked Questions

When to buy flight tickets from Boston (BOS) to San Francisco (SFO) the cheapest?
Airlines adjust prices for flights from Boston to San Francisco based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much is a flight from Boston (BOS) to San Francisco (SFO) cost?
According to Trip.com's data, the lowest price is around S$ 548.
How long is a flight from Boston (BOS) to San Francisco (SFO)?
It takes about 6 hours 34 minutes to fly from Boston (BOS) to San Francisco (SFO).
What is the transportation method from the main airport to downtown in San Francisco?
- The distance from San Francisco International Airport to downtown is about 17km, by taxi about 30 minutes.
What time does the earliest flight from Boston to San Francisco depart?
The earliest flight departs from Boston (BOS) at 07:45 and arrives in San Francisco (SFO) at 11:13.
What time does the latest flight from Boston to San Francisco depart?
The latest flight departs from Boston (BOS) at 19:45 and arrives in San Francisco (SFO) at 23:35.
What are the most popular airlines that fly from Boston (BOS) to San Francisco (SFO)?
Airlines with flights from Boston (BOS) to San Francisco (SFO): LATAM Airlines, Korean Air, Icelandair, American Airlines, Air Pacific, Air New Zealand, Tap Portugal, Virgin Australia, Singapore Airlines, Ana and Hawaiian Airlines.
What's the most popular airline for direct flights from Boston (BOS) to San Francisco (SFO)?
Delta Air Lines operates 13 direct flights from Boston (BOS) to San Francisco (SFO).
How many airports in San Francisco?
There are 1 airports near San Francisco: San Francisco International Airport.

How to find a cheap flight from Boston to San Francisco

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Boston to San Francisco. Book your flights at the right time and save more.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

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Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

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Find cheapest flight ticket from Boston to San Francisco

Cheapest direct flight price	S$ 128
Cheapest return ticket price	S$ 246
Cheapest month	February
Peak season for travel	October
Flight distance	4,342.96km
Average flight time	6 hours 34 minutes
Popular airline	Alaska Airlines