Cheap Flights from Boston Logan International to San Francisco International

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Compare Boston Logan International to San Francisco International flight deals

Find the cheapest month or even day of the year to fly to San Francisco International

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Flight deals from Boston Logan International to San Francisco International

Looking for a cheap last-minute deal or the best return flight from Boston Logan International to San Francisco International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Boston Logan International to San Francisco International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Boston Logan International to San Francisco International flights are currently cheapest in April.

Direct flights from Boston Logan International to San Francisco International

Boston Logan International to San Francisco International: Alternative routes

Compare routes from Boston Logan International to San Francisco below. You may find an airport to fly into that's cheaper, faster, or easier than San Francisco International.

Boston to San Francisco: Flight information

The things to know before you go.
Cheapest flight foundR 2,220
Cheapest month to flyApril
Average flight time6 hrs, 46 mins
Most popular airlineEtihad Airways
Average flights per week387

Finding cheap flights from Boston Logan International to San Francisco International: Frequently asked questions

The best price we found for a return flight from Boston Logan International to San Francisco International is R 4,439. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
6 hours and 46 minutes is the average flight time from Boston Logan International to San Francisco International.
Etihad Airways, United and Hawaiian Airlines fly direct from Boston Logan International to San Francisco International.
As of April 2025, there are 387 flights per week flying from Boston Logan International to San Francisco International.
The cheapest month to fly from Boston Logan International to San Francisco International is usually April 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boston Logan International Airport to San Francisco International Airport on Saturday, 26 April 2025.
Yes – the average flight time is 6 hours and 46 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Francisco International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Francisco is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to San Francisco International.

Flying from Logan International Airport (BOS) to San Francisco International Airport (SFO): what you need to know

  • 6 hours 43 minutes is the average duration of a direct flight from Logan International Airport to San Francisco International Airport. San Francisco is 3 hours behind Boston and operates on the UTC-7 timezone.

  • Every week, there are 116 flights from Logan International Airport to San Francisco International Airport. If you want to be on board as early as possible, take the 06:00 JetBlue Airways flight. If you'd rather make the most of your time before you fly, the last flight from BOS to SFO is 23:59 with JetBlue Airways.

  • Popular months like August or holiday periods such as Thanksgiving and Christmas/New Year will mean longer lines at check-in and security. Be on the safe side and get to the airport even earlier. Arriving two hours before domestic flights and up four hours ahead of an international flight is a wise idea.

  • Delta Air Lines is your ticket to exploring San Francisco (and maybe even some other exciting corners of United States!). Browse the direct flights from Logan International Airport to San Francisco International Airport offered by this popular carrier.

  • If you want to have a stopover for your flight from Logan International Airport to San Francisco International Airport, just uncheck 'Direct flights only' and check out your options. These are the top stopovers between BOS and SFO:

    • Detroit Metropolitan Wayne County Airport

    • Denver International Airport

    • Minneapolis-St. Paul International Airport

  • No need to bring your passport or a visa for travel within United States. You will need a valid proof of identity though, like a driver's license or ID card. Make sure they're on your packing list once you've booked your cheap ticket from BOS to SFO.

How to find the cheapest flights from Logan International Airport (BOS) to San Francisco International Airport (SFO)

  • The lowest price we've found for a one-way ticket from Logan International Airport to San Francisco International Airport is R 2,220. For a return flight on this route, the best price is R 4,439. Depending on the availability and when you book, these fares can change.

  • Score cheap tickets from BOS to SFO by booking 9 months ahead. Based on our research, that's the sweet spot for landing a bargain.

  • May is the cheapest month for tickets from Logan International Airport to San Francisco International Airport. If you'd like to fly during a different time of year, the 'Whole month' tool will give you the lowest airfares for each month.

  • Sign into your online account or use the app to set up a Price Alert. We'll get in touch straight away if there's a better deal on this route. It's simple to do, and it'll save you the hassle of checking for cheap tickets from BOS to SFO every day.

  • Use filters to tailor your flights from Logan International Airport to San Francisco International Airport. Pick your preferred departure and arrival times, airlines and number of stops. Alternatively, sort your results by 'Cheapest' to get the best deals.

Handy information about Logan International Airport (BOS)

  • Logan International Airport is around 5 kilometres from central Boston. If you're ride-sharing, driving or catching a cab from the centre, it'll take you 12 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the trip time to be around 23 minutes.

  • Want a convenient hotel near BOS? If you're boarding an early flight from Logan International Airport to San Francisco International Airport, these accommodation options will have you sleeping moments from your departure lounge:

Arriving at San Francisco International Airport (SFO)

Getting from San Francisco International Airport (SFO) to central San Francisco

  • From San Francisco International Airport, San Francisco is approximately 21 kilometres away. It takes around 20 minutes to reach the centre driving.

  • Travelling to the centre on public transport takes about 47 minutes.

When to fly to San Francisco International Airport (SFO)

  • It's time to pick your dates for your flight from Logan International Airport to San Francisco International Airport. August is the busiest month to visit San Francisco. If you want a quieter vibe, go in February.

  • Book your flight from Logan International Airport to San Francisco International Airport for September if you'd like to visit San Francisco during its warmest month. Expect temperatures of between 12ºC and 22ºC.

  • If you want to travel in cooler conditions, look for a cheap ticket from BOS to SFO in January. Average temperatures are between 6ºC and 16ºC then.

More about San Francisco

  • Start your San Francisco trip right by finding a wonderful stay. Once you've booked your flight from BOS to SFO, explore our selection of hotel options including:

  • All great journeys should include some sightseeing. Golden Gate Bridge, Alcatraz Island and Lombard Street are must-have experiences during your San Francisco visit.

Complete your San Francisco trip with hotels and a car rental

  • Comparing flights is not the only thing we're good at. Once you've secured your cheap ticket to San Francisco International Airport, explore our car rental offers that'll give you the flexibility to travel around at your own pace. Next, have a look at our exclusive rates for hotels to find your perfect San Francisco stay.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.