Cheap flights from Boston to San Francisco from £85
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to San Francisco departing on 15/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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JetBlue flights from Boston to San Francisco
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Alaska Airlines flights from Boston to San Francisco
Our best Alaska Airlines deals on Boston to San Francisco flight tickets
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How to get the cheapest flight ticket from Boston to San Francisco
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Francisco?
The month of September is, on average, the cheapest month to fly to San Francisco from Boston, with most prices found around £227. If you are unable to visit San Francisco during the month of September, then departing from Boston during the month January is also very affordable. Most momondo users find prices during this month for around £241.
What is the cheapest day to depart on your flight to San Francisco?
The cheapest day to depart on your flight to San Francisco is on a Thursday when prices can be found for as low as £227. This is often the case because there is less demand to fly during this day of the week. Flights from Boston to San Francisco on a Saturday will generally be more expensive and average around £1,070. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to San Francisco?
Our most recent data shows that the best time of day to fly to San Francisco is in the afternoon. Flights from Boston to San Francisco during this time can be as low as £203. Try not to purchase tickets at midday because they tend to be around £700. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest Boston Logan Intl to San Francisco flight route?
Fly from Boston Logan Intl to San Francisco for the best Boston Logan Intl - San Francisco flight prices
How far in advance should I book a flight to San Francisco?
You are more likely to see cheaper flights to San Francisco from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around £260 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Boston for as low as £238 on momondo.
What cabin class options are available on Boston Logan Intl to San Francisco flights?
There are 3 cabin classes available to choose from on Boston Logan Intl to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How many flights depart from Boston to San Francisco on average per day?
As of July 2025, 46 flights take off from Boston and land in San Francisco each day. The most common flight departure time for this route is 20:00, with 47% of daily flights taking off at midday.
How many flights depart from Boston to San Francisco on average per week?
324 flights are operational weekly from Boston to San Francisco as of July 2025. The most popular departure day for this route is Mon, with 18% of flights per week taking off on this day.
When to book flights from Boston to San Francisco
Cheap Boston to San Francisco (BOS to SFO) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Boston to San Francisco
Best price found | £85 |
|---|---|
Fastest flight time | 6h 28m |
Direct flights | Every day |
Airports in San Francisco | 1 airport |
How far is Boston Logan Intl to San Francisco by plane?
The distance between Boston Logan Intl and San Francisco is about 2690.2 mi. 6h 29m is a normal flight duration for this route.
When did momondo last update prices for flights from Boston Logan Intl Airport to San Francisco Airport?
Prices for flights from Boston Logan Intl Airport to San Francisco Airport are updated daily.
How many operators does momondo search for flights from Boston Logan Intl Airport to San Francisco Airport?
The number of operators available for flights from Boston Logan Intl Airport to San Francisco Airport is 2 as of July 2025.
How old do you have to be to fly from Boston Logan Intl Airport to San Francisco Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Boston to San Francisco?
Based on momondo bookings for flights between Boston and San Francisco, the leading plane model is Boeing 737 MAX 9, making up 26.63% of the total bookings. Other popular models include Airbus A321neo with 26.63%, Airbus A318/A319/A320/A321 with 15.81%, and Boeing 737 with 14.53%.
What is the most popular airline from Boston to San Francisco?
momondo data reveals that the most frequently booked airline on the route from Boston to San Francisco is JetBlue, representing 61% of all bookings. The subsequent popular airline is Alaska Airlines at 39%.
Best airlines flying from Boston to San Francisco
Compare and see reviews for airlines that fly from Boston to San Francisco with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £105 | Free Cancellation | Rating 7.3 2,919 reviews | |||
| PriceFrom £161 | Free Cancellation | Rating 8.0 10,000 reviews |
Alaska Airlines Flights From Boston to San Francisco
Alaska Airlines flight deals from Boston to San Francisco start from £221 round-trip. Over the 9 Alaska Airlines flights for this route in a normal week, average airfare is usually £278 round-trip - but some users have found much cheaper deals with momondo.
JetBlue Flights From Boston to San Francisco
Across 2,920 JetBlue reviews on momondo, the average score is 7.3/10. JetBlue flies from Boston to San Francisco about 23 times each week, with ticket deals ranging from £144 to £259. Price data is based on momondo searches in the last 72 hours.
Travelling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Boston to San Francisco?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from Boston.
Can I find flights from Boston to San Francisco with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Boston to San Francisco flights to just show those with flexible booking policies.
How can momondo help me find flights from Boston to San Francisco?
Once all potential Boston to San Francisco flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Boston to San Francisco right now. Can momondo alert me if prices change?
If you are simply researching potential flights to San Francisco, momondo offers a useful price alert feature which will track prices for flights to San Francisco from Boston and alert you when they change.