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Find cheap flights from Boston to San Francisco Bay Area from $67

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to San Francisco Bay Area departing on 5/21. 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
0 bags
Thu 6/6
Thu 6/13

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Best San Francisco Bay Area Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

San Francisco
San Francisco2 stops$169
San Jose
San Jose2 stops$193

Good to know

Low season

January

High season

August

Cheapest flight

$67
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Boston to San Jose

FAQs - booking San Francisco Bay Area flights

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

    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 Boston to San Francisco Bay Area.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco Bay Area from Boston 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 Boston to San Francisco Bay Area?

    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 San Francisco Bay Area with an airline and back to Boston with another airline.

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

    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 San Francisco Bay Area from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to San Francisco Bay Area

  • Looking for a cheap flight? 25% of our users found tickets from Boston to the following destinations at these prices or less: San Francisco $183 one-way - $307 round-trip

Top 5 airlines serving from Boston to San Francisco Bay Area

 
Need help choosing which airline to fly with from Boston to San Francisco Bay Area? 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 9147 reviews
7.3Entertainment
7.9Comfort
8.6Crew
7.3Food
8.2Boarding
Airline reviews

Smooth. Courteous. Fun. One problem: the wheels on my checked roller back were broken when I picked up baggage at destination. Must have happened during flight baggage handling but I don’t know where.

10.0 ExcellentCarla, May 2024BOS - SEA
Read more about Alaska Airlines reviews

Smooth. Courteous. Fun. One problem: the wheels on my checked roller back were broken when I picked up baggage at destination. Must have happened during flight baggage handling but I don’t know where.

Ground crew was great in Austin, flight crew left a lot to be desired. Not particularly friendly, helpful or nice.

Overall good flight, smooth and on time and comfortable. Disappointing that food is not served and you can't purchase the snack packs on the plane.

My baggage was in another flight, anit was delayed for one hour.

They canceled the flight 30 minutes prior to departure without any heads up.

Like South West(2 check in baggage free) if Alaskan Airlines could give at least one check in baggage free then it would be great.

Up on arrival, due to twisted ankle, I wasn’t able to walk. Requested for a wheelchair. They immediately asked for it. After 10 minutes wait a young man named Carlos picked me up at the gate, got my baggage and took me to the pick up area. It was a great service. Thanks Alaska Air line

Staff great. Tight seating. Pretzels and drink same as any other airline.

We had a very scary attempted landing in Palm Springs and were redirected to Ontario. It was a stressful flight.

Every thing means , crew, service, timing, boarding is very good.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

They did a fine job. Can't wait to use Delta in the future.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

Seats in first class on the E175 recline too far back. I was in 2A, and the man in 1A fully reclined almost the entire flight. It took 6-7 inches of space away from me and made it very difficult to work on my laptop.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Mario was great. Made a night flight on a small aircraft pleasant and memorable.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Crew were exceptional. Plane was quiet and quite empty, so I had a row to sleep across.

I had back trouble prior to my flight and everyone was great about helping me.

My tv was broken on the flight which is disappointing when you pay for a seat and expect a service

Always delays from Boston to Salt lake but this time was very long. Don’t understand while they board the passengers and then make them sit in the plane

Service for food to our seat was a bit slow. Snack choices were just pretzels or baked chips. My seat cushion was not attached. Other than Barbie, video choice were not very good or current.

After we landed, we were held on the plane for 30 minutes. There was no one at the gate once we landed and we forced to sit on a plan that had already over an hour delayed.

almost 4 hour delay as they over booked and had to wait for 8-10 volunteers to agree to travel next day.

Old plane. No outlets for laptop or phone. Seats worn out. Area around seat dirty.

I loved the flight and the crew. It was comfortable and smooth.

The crew was openly hostile and condescending to the customers. They spent the majority of that time in the rear talking and seemed really agitated when people asked questions. I heard five different people told that the information they requested was in the handout or safety brief.

ticketing issues caused many customers to have to go back to check in after waiting in security, then go through security line again.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

The WiFi didn’t work and the seats are too close together. Very uncomfortable.

So so. Terrible aircraft choice for that leg of the flight.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Too many fees (but that seems to apply to all airlines nowadays)

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

delayed delayed delayed. was supposed to have a 2 hour layover and very nearly missed my connection.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

Despite a bumpy flight the pilot was great. The rest of the crew on the other hand couldn’t care less if a passenger would colapse and die. Horrible service, robot like, lifeless…

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

Book cheap flights from Boston to San Francisco Bay Area

Recent round-trip flight deals

5/27Mon
2 stops
46h 10mBOS-SFO
6/3Mon
2 stops
34h 19mSFO-BOS
$169
5/28Tue
2 stops
46h 10mBOS-SFO
6/4Tue
2 stops
34h 19mSFO-BOS
$170
8/27Tue
nonstopJetBlue
6h 30mBOS-SFO
9/11Wed
nonstopJetBlue
5h 31mSFO-BOS
$217
8/27Tue
1 stopJetBlue
11h 24mBOS-SFO
9/10Tue
nonstopJetBlue
5h 31mSFO-BOS
$227
8/29Thu
nonstopUnited Airlines
6h 32mBOS-SFO
9/4Wed
1 stopUnited Airlines
9h 39mSFO-BOS
$240
8/31Sat
nonstopDelta
6h 59mBOS-SFO
9/14Sat
nonstopDelta
5h 38mSFO-BOS
$245
8/29Thu
1 stopUnited Airlines
8h 09mBOS-SFO
9/4Wed
1 stopUnited Airlines
9h 39mSFO-BOS
$249
5/31Fri
nonstopAlaska Airlines
6h 35mBOS-SFO
6/4Tue
1 stopAlaska Airlines
8h 57mSFO-BOS
$250
8/31Sat
nonstopDelta
6h 59mBOS-SFO
9/14Sat
1 stopDelta
11h 04mSFO-BOS
$255
5/29Wed
nonstopAlaska Airlines
6h 35mBOS-SFO
6/4Tue
1 stopAlaska Airlines
8h 57mSFO-BOS
$256

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Recent one-way flight deals

5/21Tue
2 stopsSpirit Airlines
16h 47mBOS-SJC
$67
8/28Wed
1 stopSpirit Airlines
15h 32mBOS-OAK
$77
6/4Tue
nonstopJetBlue
6h 26mBOS-SFO
$100
6/11Tue
nonstopUnited Airlines
6h 28mBOS-SFO
$103
6/8Sat
nonstopDelta
6h 45mBOS-SFO
$105
5/31Fri
nonstopJetBlue
6h 35mBOS-SFO
$118
5/30Thu
nonstopDelta
6h 50mBOS-SFO
$120
6/8Sat
1 stopAlaska Airlines
8h 37mBOS-SFO
$133
8/17Sat
nonstopUnited Airlines
6h 27mBOS-SFO
$137
6/9Sun
nonstopAlaska Airlines
6h 35mBOS-SFO
$154

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Last minute flights from Boston to San Francisco Bay Area

Last minute flight, train and bus deals

5/11Sat
multi-stopAmerican Airlines
9h 13mBOS-SFO
8/24Sat
multi-stopAmerican Airlines
8h 22mSFO-BOS
$330
5/11Sat
multi-stopDelta
10h 30mBOS-SJC
5/14Tue
multi-stopDelta
10h 37mSJC-BOS
$366
5/10Fri
multi-stopSpirit Airlines
12h 15mBOS-OAK
5/13Mon
multi-stopSpirit Airlines
32h 32mOAK-BOS
$390
5/12Sun
multi-stopSpirit Airlines
31h 56mBOS-SJC
5/14Tue
multi-stopSpirit Airlines
18h 28mSJC-BOS
$392
5/9Thu
nonstopJetBlue
6h 39mBOS-SFO
5/14Tue
nonstopJetBlue
5h 49mSFO-BOS
$420
5/8Wed
nonstopUnited Airlines
6h 42mBOS-SFO
5/13Mon
multi-stopUnited Airlines
7h 50mSFO-BOS
$425
5/11Sat
multi-stopAlaska Airlines
8h 46mBOS-SFO
5/20Mon
nonstopAlaska Airlines
5h 42mSFO-BOS
$429
5/8Wed
multi-stopUnited Airlines
8h 40mBOS-SFO
5/13Mon
multi-stopUnited Airlines
7h 50mSFO-BOS
$434
5/11Sat
nonstopJetBlue
6h 35mBOS-SFO
8/24Sat
multi-stopJetBlue
9h 46mSFO-BOS
$436
5/9Thu
nonstopAlaska Airlines
6h 45mBOS-SFO
5/18Sat
nonstopAlaska Airlines
5h 42mSFO-BOS
$460

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Boston - San Francisco Bay Area Flights

Departure:

Boston (BOS)United States

Return flight deals:

San Francisco Bay Area - Boston

Cabin classes:

$326
$331
$296
$52