SFO - BOS

$130 Find Cheap Flights from San Francisco to Boston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Boston departing on 2/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Boston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Boston.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Boston.
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Everything you should know

Cheapest round-trip
$209
Overall average: $327
JetBlue
Tue 2/10Thu 2/19
SFO - BOS • Non-stop
Cheapest one-way
$130
Typical prices: $138-$307
Frontier
Mon 2/23
SFO - BOS • 1 stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
JetBlue's Even More Space offers extra legroom.
The Silver Line bus from BOS is free to downtown.
Expert advice
Expert advice
Expert advice
Expert advice
Video guide: How to find cheap flights to Boston
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Top airlines
JetBlue
Cheapest • from $209 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 36% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 14% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Boston!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Boston

Tue, Feb 10 - Thu, Feb 19
JetBlue Logo
3:25 pm - 11:58 pm
SFO
-
BOS
5h 33mnonstop
JetBlue Logo
7:15 am - 11:15 am
BOS
-
SFO
7h 00mnonstop
$209JetBlue
Mon, Feb 9 - Mon, Feb 9
JetBlue Logo
8:26 am - 5:05 pm
SFO
-
BOS
5h 39mnonstop
JetBlue Logo
7:09 pm - 10:59 pm
BOS
-
SFO
6h 50mnonstop
$212JetBlue
Wed, Feb 18 - Mon, Feb 23
JetBlue Logo
3:25 pm - 11:58 pm
SFO
-
BOS
5h 33mnonstop
JetBlue Logo
8:33 pm - 12:25 am
BOS
-
SFO
6h 52mnonstop
$214JetBlue
Tue, Mar 31 - Wed, Apr 8
Multiple Airlines Logo
12:10 pm - 8:58 pm
SFO
-
BOS
5h 48mnonstop
Multiple Airlines Logo
5:45 am - 7:14 pm
BOS
-
SFO
16h 29m
1 stop
$215Multiple Airlines
Sun, Feb 15 - Thu, Feb 19
JetBlue Logo
8:00 am - 4:40 pm
SFO
-
BOS
5h 40mnonstop
JetBlue Logo
8:33 pm - 12:25 am
BOS
-
SFO
6h 52mnonstop
$217JetBlue
Thu, Mar 5 - Mon, Mar 9
Multiple Airlines Logo
10:58 pm - 11:41 am
SFO
-
BOS
9h 43m
1 stop
Multiple Airlines Logo
8:40 pm - 12:31 am
BOS
-
SFO
6h 51mnonstop
$218Multiple Airlines
Fri, Feb 27 - Sun, Mar 1
JetBlue Logo
3:25 pm - 11:58 pm
SFO
-
BOS
5h 33mnonstop
JetBlue Logo
7:00 am - 11:00 am
BOS
-
SFO
7h 00mnonstop
$219JetBlue
Wed, Feb 11 - Wed, Feb 18
Frontier Logo
6:55 am - 1:13 am
SFO
-
BOS
15h 18m
2 stops
Frontier Logo
6:00 am - 9:39 pm
BOS
-
SFO
18h 39m
1 stop
$220Frontier
Wed, Feb 11 - Fri, Feb 20
Frontier Logo
6:55 am - 1:13 am
SFO
-
BOS
15h 18m
2 stops
Frontier Logo
6:00 am - 9:39 pm
BOS
-
SFO
18h 39m
1 stop
$221Frontier
Wed, Feb 11 - Wed, Feb 18
United Airlines Logo
1:03 pm - 9:45 pm
SFO
-
BOS
5h 42mnonstop
United Airlines Logo
7:05 am - 1:22 pm
BOS
-
SFO
9h 17m
1 stop
$222United Airlines
Booking Insights

KAYAK's insights & trends for San Francisco to Boston flights

Get data-powered insights and trends into flights from San Francisco to Boston to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to Boston
Find cheap flights to Boston

Planning a trip from San Francisco to Boston? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What’s the cheapest day of the week to fly from San Francisco to Boston?

The average price of all round-trip flights from San Francisco to Boston clicked on KAYAK for each day over the last 12 months.

For San Francisco to Boston, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Boston back to San Francisco, the best deals are generally found on Wednesday, with Sunday being the most expensive.

What is the cheapest month to fly from San Francisco to Boston?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Boston, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Francisco to Boston is February, where tickets cost $327 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $467 and $442 respectively.

Can I save money by flying with a layover from San Francisco to Boston?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $339 on average.

How far in advance should I book a flight from San Francisco to Boston?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Boston, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Francisco to Boston, you should book around 3 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Expert advice

Expert advice for your flight from San Francisco to Boston

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on JetBlue and Alaska Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on BOS and SFO

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

KAYAK's tips to save more on a San Francisco to Boston flight

When planning a trip from San Francisco to Boston, it's important to consider several factors to ensure you're getting the best deal. Generally, the cheapest day of the week to fly is Wednesday, while the most affordable month is February.

Cheapest Route: Stick to the direct route from San Francisco (SFO) to Boston Logan Intl (BOS) for the best prices.

Booking Advance: Aim to book your flight around 172 days in advance for the best rates.

Budget Airline: Consider flying with Frontier, as they generally offer the cheapest fares for this route.

Direct vs Layover: Opt for a direct flight, as it's significantly cheaper than flights with layovers.

AI-powered; AI can make mistakes.

Good to know

Low seasonJanuary
Cheapest flight$130
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 11% increase in price.
Flight from San Francisco to Boston

When to book flights from San Francisco to Boston

Are your dates flexible? Find out the best times to travel from San Francisco to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Francisco to Boston

  • What is the cheapest flight from San Francisco to Boston?

    In the last 3 days, the lowest price for a flight from San Francisco to Boston was $130 for a one-way ticket and $209 for a round-trip.

  • Do I need a passport to fly between San Francisco and Boston?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airlines offer Wi-Fi service onboard planes from San Francisco to Boston?

    JetBlue, Alaska Airlines, and American Airlines offer inflight Wi-Fi service on the San Francisco to Boston flight route.

  • Which aircraft models fly most regularly from San Francisco to Boston?

    The Airbus A318/A319/A320/A321 is the aircraft model that flies most regularly on the San Francisco to Boston flight route.

  • Which airline alliances offer flights from San Francisco to Boston?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between San Francisco and Boston, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from San Francisco to Boston?

    There are nonstop flights from San Francisco to Boston on a daily basis.

  • Which is the best airline for flights from San Francisco to Boston, Alaska Airlines or Southwest?

    The two airlines most popular with KAYAK users for flights from San Francisco to Boston are Alaska Airlines and Southwest. With an average price for the route of $405 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Southwest is also a great choice for the route, with an average price of $417 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from San Francisco to Boston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Boston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Boston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Boston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and BOS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Boston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from San Francisco to Boston

  • Looking for a cheap flight? 25% of our users found flights on this route for $169 or less one-way and $273 or less round-trip.

Prefer to fly direct from San Francisco to Boston?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from San Francisco to Boston Logan Intl.
Find which airlines fly direct from San Francisco Airport to Boston Logan Intl Airport, which days they fly and book direct flights.

Direct departures

San Francisco to Boston Logan Intl

Monday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Tuesday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Wednesday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Thursday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Friday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Saturday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Sunday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

See more direct flights

Direct returns

Boston Logan Intl to San Francisco

Monday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Tuesday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Wednesday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Thursday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Friday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Saturday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Sunday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

See more direct flights

Reviews of the top 5 airlines serving from San Francisco to Boston

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Boston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Boston? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 11775 reviews
7.8Comfort
7.0Entertainment
8.1Boarding
7.1Food
8.5Crew
Airline reviews

There is nothing critical to complain about but I would say the snacks are pretty bad Airline staff could be aggressive the way they move through the aisles and the plane I also got hustled for a small wallet size men bag and force the consolidated with my carry on item we're talking about a wallet size bag.

6.0 Goodrsmrostov, Jan 2026
SEA - BOS
Read more Alaska Airlines reviews

There is nothing critical to complain about but I would say the snacks are pretty bad Airline staff could be aggressive the way they move through the aisles and the plane I also got hustled for a small wallet size men bag and force the consolidated with my carry on item we're talking about a wallet size bag.

The Alaska Airlines app made it very difficult to find my boarding pass. It was very frustrating to use! The flight itself was flawless.

The flight was excellent and very friendly and helpful staff. Will travel again and recommend to friends. Thank you

Did not have In flight service on my round trip due to turbulence. I did not partake in In flight entertainment. Flight descending into LAX was very turbulent. It would have been nice if the pilot communicated with us during that rough descent into LAX to ease the minds of some of us more nervous flyers.

They canceled my flight with only a couple hours before checking in at the airport and offered no alternatives to get home.

I had entered my TSA pre number when I bought the ticket but TSA pre was not on my boarding pass. I went to find an agent at check in and there was only one agent one duty for first class and a line of people waiting for check in/baggage with no agent manning that area.

Comfort level was below par. Food selection was non-existent. Paying $35 for 1st bag is never appreciated. I will not fly them again. I am actually trying to change my return flight.

The flight attendants were excellent and I was in the back of the plane. Much much better than recent JetBlue experiences on that route and better than Delta on that route.

I’m not sure there is anything that can be improved, even the cost was fantastic.

Poor. They should have given me a row with more room and instead they put me in a middle seat with two strangers next to me

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

The flight was delayed for about 2 hrs. Other than it, it was good.

Advertised fruit trays with cheese, but only snacks handed out!

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

This flight was straightforward and without difficulty. Service was OK, but I continue to be underwhelmed by level of attention given to Sky Priority passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

I received several emails about my 3:10 flight. When I showed up to the airport at 12:30 to check my bags I was told the flight was actually at 1 pm. They grudgingly rebooked me for a flight at 5:22 to Vegas to get a connecting to LAX. I did find the gate for my original 3:10 flight but they were booked. I proceeded to receive status updates and gate change information for the 3:10 flight, even though I was apparently never supposed to be on that flight

The food options were limited and very specific. Some type of entertainment option for a 4.5 hour flight would have been nice.

The Kayak confirmation number did not work for checking in the day before. I checked in at 8.30 using my ticket number. When I arrived at the airport, I was informed that the flight was overbooked, and since I had checked in late, I did not have a seat. The Next flight was not until ten PM. I called my wife, who had been taking care of our kids all weekend, and she was upset, calling me a liar and telling me to stay in SD. It turned my weekend getaway into a nightmare! I blame the Kayak website and will not book flights using your app in the future.

comfortable but the food is horrible. I have flown Hawaiian several times now and no matter what they say the food is its the same squashed bread with melted goop inside. Tastes fake and isnt what they represent, its quite nasty. What happend to real food? And there is NO entertainment!! so not sure why they are asking for a review on that.

Good and friendly staff. Nicely enjoyed the complimentary drink and snack.

I was very, very cold and a stranger loaned me her sweater next to me. I didn’t wanna buy a blanket just for a four hour trip when I did not need the pillow or the earphones. I don’t mind purchasing a blanket, but I only needed that not all of it accessories. Cold air pretty much blew the entire trip. Two people in front of me both bought the blanket packages. Maybe that’s the idea. The crew was exceptionally nice and passed through multiple times.. the restrooms were very clean and usually accessible.

3 hour wait on customer service after flight was cancelled. Was bumped to a flight where I wouldnt have gotten to my destination for another 2 days. Had to fully refund flight and book a new one the following morning. Paid twice the amount for the flight than I had originally booked. Very disappointed I was not offered any sort of discount or points for all of the frustration, in fact the airline profited twice as much off of me by cancelling my flight and and changing my entire trip.

I understand that both Hawaiian and Alaskan are in the process of merging but I could not get real-time flight info or access my boarding pass on either app

Had a hard time checking into my flight on my phone because they gave me the wrong confirmation number. Otherwise everything else went well.

All was good and they were able to seat my travel companion next to me. Thank you.

The flight crew where really good. Better then the crew from BNE to SFO

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Premium Plus is a really good idea for longer flights

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

we were delayed because of some safety check that wasn't done or available

Friendly crew. Poor food service maybe due to full flight. All in all, you get what you pay for.

I don’t usually fly budget airlines or airlines in the United States. It was as good as any other airline. The seats are comfortable and the airline attendants are not rude & surly. Very nice flight (s).

very difficult boarding process - aggressive passengers not the friendliest crew

Too many long delays with JetBlue. Worst major airline that serves JFK but unfortunately I keep going back because of the prices.

The plane was late to leave.. Internet was lousy. TV was not working. when we arrived, We stayed on the plane for a long time before we got to the gate. It took us a long time to retrieve our luggage because they didn’t know what carousel to send them to. It was a bad experience.

There were mutliple delays. There was inconsistent, delayed, and poor communication regarding the delays.

Seats were not too comfortable; it was impossible to locate the underseat power outlet.

The check in and boarding process was a bit of a cluster. Two people at the counter to check in, three random lines that nobody knew which was for what, and people kept getting shuffled from one line to another for no apparent reason because then they’d get shuffled back and end up getting out further back in the line than they were originally. I only had to hand my already checked bag over and it took 45 minutes. I was never assigned a seat so when I tried to board I was pulled out of line again while someone had to try to manually assign me a seat. During the flight I got up to go to the bathroom, and there was an attendant in the aisle offering pillows etc and it was a 30 min wait unbuckled standing by the bathrooms because she said I couldn’t go past her. First and last time flying jet blue to be honest.

No overhead baggage room even though I was seated in row 2. Consequently had to check in my carry on bag. Baggage carousel was jammed. Took 45 min to get my bag.

Everything you need to know for your flight from San Francisco to Boston

Other airlines flying from San Francisco to Boston

Flights from the other most popular airlines that fly from San Francisco to Boston according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.