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

Search hundreds of travel sites at once for deals on flights to Boston Logan International

Sat 2/24
Sat 3/3
Any month
Compare vs. KAYAK |

Good to Know

Low Season:
October
Best time to beat the crowds
3%
expected price decrease
High Season:
December
Most popular time to fly
11%
expected price increase
Average Price:
$627
(avg. price over the last 2 weeks)
Good Deal:
$627
or less (round trip)

When to Book Flights from San Francisco to Boston Logan International

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

The cheapest flight from San Francisco to Boston Logan International was found 29 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
Morning departure is around 4% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking San Francisco to Boston Logan International Flights

How long does a flight from San Francisco to Boston Logan International take?
An average nonstop flight takes 5h 25m, covering a distance of 2697 miles.
How many flights are there between San Francisco and Boston Logan International?
There are 489 (nonstop) flights between San Francisco and Boston Logan International per week, averaging 71 per day.
Which airlines provide the cheapest flights from San Francisco to Boston Logan International?
In the past 3 days, the cheapest round-trip tickets were found on American Airlines ($239), Sun Country Air ($246) and Multiple Airlines ($261).
Do I need a passport to fly between San Francisco and Boston Logan International?
No.
Which airlines fly most frequently between San Francisco and Boston Logan International?
United (10 times daily), JetBlue (9 times daily), Virgin America (8 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly San Francisco to Boston Logan International?
For San Francisco to Boston Logan International, Tuesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Boston Logan International back to San Francisco, the best deals are generally found on Wednesday, with Thursday being the most expensive.

Book cheap flights from San Francisco to Boston Logan International (round-trip)

Airports
Origin
San Francisco
$239
only
$239
Destination
Boston
$239
only
$239
Tue, May 1
SFO
BOS
8h 42m
Wed, May 2
BOS
SFO
9h 23m
Trip: 2 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28416 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ORD
MCO
Mediocre 2.6

Horribly made me cancel flight because of 1min after 30 min cut off for boarding pass. Sat at the front desk for 29 minute arguing until my plane left.

DEN
ORD
Good 6.4

I'm not sure where the problem was - whether with AA or Royal Jordanian, but my luggage did not make it to Amman with me. In fact, there was a whole group of passengers traveling on American from different US cities, switching to RJ in Chicago, whose luggage did not come on the flight to Amman. My advice: be sure to pack enough for a couple of days in your carryon - and don't accept an offer to check your carryon to its final destination!

BWI
CLT
Mediocre 3.0

One of the flight attendants was nice.

AA is now trying to save money (presumably) by doing like Delta: forcing half of us to connect in Charlotte. Unfortunately, the Charlotte airport is not ready to accommodate so many people. The airport looks like it is being renovated, which is fine, but there is no tape/cones to mark off the renovated areas from the walkways. You literally walk through dirt and construction sites. I didn't even think that was legal in the US?! Anyway, maybe it will be worth it once the renovations are complete, especially if AA is going to use it as a hub.

LAX
MIA
Mediocre 2.0

Couldn’t sleep because the AC wasnt working. Most miserable flight my life

The AC wasn’t working it was the most miserable flight ever

JFK
MAD
Okay 4.0

Very old plane. No personal entertainment. Very basic service.

Tue, Apr 10
SFO
BOS
7h 43m
Fri, Apr 20
BOS
SFO
8h 10m
Trip: 11 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 7608 reviews
Overall
8.2
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.2
MSP
AUA
Okay 5.0

We didn't crash, and we weren't delayed too much

The flight attendants seemed to skip us regularly on there service runs, they weren't overly friendly. Food selection wasntgood, but that's probably my fault for not bring my own.

MSP
PHX
Okay 4.3

Friendly

To crowded and cramped . No complimentary snacks.

LAS
MSP
Excellent 10.0

Near empty plane

MSP
RSW
Excellent 8.0

Fast and friendly

Bathroom in the back was leaking water on the floor, and there were a lot of young kids on board... minor stuff

SAN
MSP
Mediocre 2.0

Wouldn’t print me a boarding pass 45 min before boarding. I had to rebook on delta for the next day. There was no security line. I would have made this flight.

Sat, May 12
SFO
BOS
5h 47m
Sat, May 19
BOS
SFO
7h 05m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Apr 12
SFO
BOS
5h 35m
Tue, Apr 17
BOS
SFO
6h 43m
Trip: 6 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 64 reviews
Overall
8.2
Boarding
8.3
Comfort
8.3
Crew
8.6
Entertainment
8.0
Food
7.8
SFO
BOS
Excellent 8.0

They reconfigured the flight home adding more time onto the flight - I missed my connecting bus ride because of this.

SFO
BOS
Excellent 9.3

The service and seats in Mint are amazing.

Food is just so-so. I've had much better in other first class cabins.

SFO
BOS
Excellent 10.0

The adequate legroom.

SFO
BOS
Excellent 10.0

The staff makes the trip very enjoyable - they were friendly and patient. The wifi is convenient and the snacks are tasty.

N/A

SFO
BOS
Excellent 10.0

Everything was perfect,the seating and the service and their crew.

Waiting to get off

Tue, Apr 3
SFO
BOS
5h 37m
Wed, Apr 4
BOS
SFO
6h 30m
Trip: 2 days
6.2GoodShow reviews
Overall 6.2 Good
Based on 184 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
BOS
Good 6.0

complimentary water and snacks while waiting in line to board delayed flight

Flight delay due to late arrival of flight crew. Should have backup flight attendants for these situations, esp. at a large airport like SFO. Getting in at 2:30 am made for a miserable trip. Should have offered complimentary dinner to everyone when there is that much of a delay.

SFO
BOS
Mediocre 2.0

It began going downhill at the United Lounge, where I put two chairs together to get a little sleep since my flight was scheduled to leave at 12:30am. I was summarily woken up and told that it wasn't appropriate to sleep in a lounge. I complained at the front-desk (politely) and was told ... "This is a lounge". Oh and yes, the Wifi wouldn't connect and the food was stale ... so I left, and found a very nice sofa in the concourse. On the flight, service was non-existent, whoever was in the galley was clattering things about, despite the fact that this is a short red-eye flight ... the coffee was awful. The steward forgot to give me my coat and I had to ask twice AFTER we landed and were leaving the plane to get it. By contrast, Lufthansa has daybeds and a special quiet area to snooze, and offer pillows and blankets. Clearly, the Germans are louche compared to Americans.

SFO
BOS
Good 6.0

Seats were comfortable and there was an ample amount of legroom

Flight was delayed 5 hours!

SFO
BOS
Good 6.0

Captain kept us inform and did what he could to arrive close to schedule.

Delayed departure and flight attendant not courteous.

SFO
BOS
Mediocre 3.6

Flight attendants are nice. I picked one of the seats at the end so plenty leg room.

OK, United, I understand and fully support "no more seat monitor" policy to reduce costs (even though it seems very backward); however, there's one problem--if you still want to enjoy onboard entertainments, you need to download the United application above 10,000 feet where you can never find your 4G connection. Oh wait, but there's still Wi-Fi service, right? Sure, if you are willing to pay $17 just to download application!! United, I understand how you want to make little money out of a customer's pocket, but this is not how you should do it. You should at least allow internet connection before departure or let the customer aware they need to download application beforehand.

Tue, Jul 10
SFO
BOS
5h 51m
Wed, Jul 18
BOS
SFO
6h 43m
Trip: 9 days
10.0ExcellentShow reviews
Overall 10.0 Excellent
Based on 9 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
SLC
YYZ
Excellent 8.0

was a difficult transition from delta to west jet in Toronto and we almost missed the flight

SLC
YYZ
Excellent 9.6

Z

FLL
ATL
Excellent 8.0

Departure was right on time and we actually arrived 15 minutes early.

The inflight monitor worked but none of the data (GPS altitude or speed) was working.

SFO
BOS
Excellent 10.0

I was bowled over to learn in flight that the lowly steerage (economy) passengers--and everyone else had a selection of 3 complimentary meals! Who does that any more! Unfortunately, the only vegan option ran out just before my seat, but I was still amazed and pleased....and have ordered a vegan meal in advance for my next flight. Incredible! Plus, plenty of room for bags, good video selections, and power at all seats. I love Delta and will fly them more often!

SFO
BOS
Excellent 10.0

It was my husband's birthday and the stewardess (red dress, long brown hair) went out of her way to make him feel special by bringing champagne, cookies and even chocolate once we were getting off the plane. I was very touched.

The guy next to me was kind of smelly but was very nice.

Tue, Mar 20
SFO
BOS
5h 35m
Wed, Mar 21
BOS
SFO
6h 47m
Trip: 2 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 64 reviews
Overall
8.2
Boarding
8.3
Comfort
8.3
Crew
8.6
Entertainment
8.0
Food
7.8
SFO
BOS
Excellent 10.0

TV movies. Great staff. Comfortable and clean.

I tried to get an aisle seat several times and was told that they were completely booked up in economy and when I boarded there were many many vacant seats that I noticed. I thought that was strangely bizarre.

SFO
BOS
Excellent 9.3

The service and seats in Mint are amazing.

Food is just so-so. I've had much better in other first class cabins.

SFO
BOS
Excellent 10.0

Every aspect perfect. Organized_generous leg room snacks and movies. Employees efficient (although this may be better than fake-happy tho) but perfect otherwise.

SFO
BOS
Excellent 9.0

new plane with expanded comfort seating section and in-app purchase of more room were great. I like the self-serve features on the plane for snacks and drinks.

The entertainment system was terrible. The touch screen is buggy and not very responsive and Direct TV would hardly work at all. The signal dropped constantly.

SFO
BOS
Excellent 10.0

The staff makes the trip very enjoyable - they were friendly and patient. The wifi is convenient and the snacks are tasty.

N/A

Wed, May 2
SFO
BOS
5h 55m
Thu, May 3
BOS
SFO
6h 36m
Trip: 2 days
6.2GoodShow reviews
Overall 6.2 Good
Based on 184 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
BOS
Good 7.3

Having the middle seat always sucks. They also didn't have inflights personal entertainment. And since everyone uses the headphone jack, they're loose and your headphones don't stay in. Hint: next time make the jack horizontal instead of vertical.

SFO
BOS
Good 6.0

complimentary water and snacks while waiting in line to board delayed flight

Flight delay due to late arrival of flight crew. Should have backup flight attendants for these situations, esp. at a large airport like SFO. Getting in at 2:30 am made for a miserable trip. Should have offered complimentary dinner to everyone when there is that much of a delay.

SFO
BOS
Good 6.6

My entertainment console was the only one that was busted.

SFO
BOS
Good 6.0

Captain kept us inform and did what he could to arrive close to schedule.

Delayed departure and flight attendant not courteous.

SFO
BOS
Good 7.3

Crew

Lost my baggage

Mon, Mar 26
SFO
BOS
5h 43m
Sat, Mar 31
BOS
SFO
6h 41m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Jul 16
SFO
BOS
6h 00m
Wed, Jul 25
BOS
SFO
6h 43m
Trip: 10 days
10.0ExcellentShow reviews
Overall 10.0 Excellent
Based on 9 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
SFO
BOS
Excellent 9.6

aircraft is very clean. faster than imaged. the most impressed thing is it has a variety of entertainment programs.

FLL
ATL
Excellent 8.0

Departure was right on time and we actually arrived 15 minutes early.

The inflight monitor worked but none of the data (GPS altitude or speed) was working.

SFO
BOS
Excellent 10.0

I was bowled over to learn in flight that the lowly steerage (economy) passengers--and everyone else had a selection of 3 complimentary meals! Who does that any more! Unfortunately, the only vegan option ran out just before my seat, but I was still amazed and pleased....and have ordered a vegan meal in advance for my next flight. Incredible! Plus, plenty of room for bags, good video selections, and power at all seats. I love Delta and will fly them more often!

SLC
YYZ
Excellent 9.6

Z

ATL
PIT
Excellent 9.0

Pilots and crew did an amazing job during unstable air coming into Pittsburgh. Great job.

Fri, Jun 1
SFO
BOS
5h 55m
Sat, Jun 2
BOS
SFO
6h 36m
Trip: 2 days
6.2GoodShow reviews
Overall 6.2 Good
Based on 184 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
BOS
Good 7.3

Large aircraft half to 3/4 full, so boarding and leaving were smooth.

Flight attendant passed me by when he was collecting food orders. I never had the chance to get food.

SFO
BOS
Mediocre 2.0

It began going downhill at the United Lounge, where I put two chairs together to get a little sleep since my flight was scheduled to leave at 12:30am. I was summarily woken up and told that it wasn't appropriate to sleep in a lounge. I complained at the front-desk (politely) and was told ... "This is a lounge". Oh and yes, the Wifi wouldn't connect and the food was stale ... so I left, and found a very nice sofa in the concourse. On the flight, service was non-existent, whoever was in the galley was clattering things about, despite the fact that this is a short red-eye flight ... the coffee was awful. The steward forgot to give me my coat and I had to ask twice AFTER we landed and were leaving the plane to get it. By contrast, Lufthansa has daybeds and a special quiet area to snooze, and offer pillows and blankets. Clearly, the Germans are louche compared to Americans.

SFO
BOS
Good 6.0

Seats were comfortable and there was an ample amount of legroom

Flight was delayed 5 hours!

SFO
BOS
Good 6.6

My entertainment console was the only one that was busted.

SFO
BOS
Good 7.3

Crew

Lost my baggage

Tue, May 8
SFO
BOS
5h 40m
Tue, May 15
BOS
SFO
6h 44m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Jun 4
SFO
BOS
5h 55m
Tue, Jun 5
BOS
SFO
6h 36m
Trip: 2 days
6.2GoodShow reviews
Overall 6.2 Good
Based on 184 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
BOS
Good 6.0

Non-stop, new plane

Seat comfort is worse then on older planes, narrow aisles make getting to your seat a chore. Poorly placed service buttons in armrests constantly cause erroneous flight attendant calls, reclining the seat causes the knee crush. Wow, United execs should really try their offerings

SFO
BOS
Okay 5.0

Good entertainment options

SFO
BOS
Excellent 8.0

Boarding flight was orderly. For some reason there was a lot of passenger patience waiting in boarding lines.

Checking in (self checkin to obtain baggage ticket) was terrible simply because United separated first class and economy areas. There were few if any signs directing passengers to the proper area. The areas were as far apart as they could be, straddling the security entrance. United was extremely busy at the time. Waiting in line for a kiosk only to be told it was first class only was inexcusable.

SFO
BOS
Mediocre 3.6

Flight attendants are nice. I picked one of the seats at the end so plenty leg room.

OK, United, I understand and fully support "no more seat monitor" policy to reduce costs (even though it seems very backward); however, there's one problem--if you still want to enjoy onboard entertainments, you need to download the United application above 10,000 feet where you can never find your 4G connection. Oh wait, but there's still Wi-Fi service, right? Sure, if you are willing to pay $17 just to download application!! United, I understand how you want to make little money out of a customer's pocket, but this is not how you should do it. You should at least allow internet connection before departure or let the customer aware they need to download application beforehand.

SFO
BOS
Good 6.6

My entertainment console was the only one that was busted.

Sun, Aug 5
SFO
BOS
5h 51m
Sun, Aug 19
BOS
SFO
6h 30m
Trip: 15 days
10.0ExcellentShow reviews
Overall 10.0 Excellent
Based on 9 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
SFO
BOS
Excellent 10.0

It was my husband's birthday and the stewardess (red dress, long brown hair) went out of her way to make him feel special by bringing champagne, cookies and even chocolate once we were getting off the plane. I was very touched.

The guy next to me was kind of smelly but was very nice.

SFO
BOS
Excellent 9.6

aircraft is very clean. faster than imaged. the most impressed thing is it has a variety of entertainment programs.

LAX
MCO
Excellent 10.0

I am used to flying Frontier because of cost but recently traveled Delta and boy did I feel completely spoiled! Not only did my other half get our bags for free due to his status with Delta but the amenities they offer and the comfort of the economy seats compared to other airlines is a major difference. As a chronic pain patient, if I can find a Delta flight for a little more, I will be booking with them for sure! Highly recommend them!

SLC
YYZ
Excellent 8.0

was a difficult transition from delta to west jet in Toronto and we almost missed the flight

SFO
BOS
Excellent 10.0

I was bowled over to learn in flight that the lowly steerage (economy) passengers--and everyone else had a selection of 3 complimentary meals! Who does that any more! Unfortunately, the only vegan option ran out just before my seat, but I was still amazed and pleased....and have ordered a vegan meal in advance for my next flight. Incredible! Plus, plenty of room for bags, good video selections, and power at all seats. I love Delta and will fly them more often!

Fri, Jun 1
SFO
BOS
5h 47m
Mon, Jun 4
BOS
SFO
7h 05m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Jun 17
SFO
BOS
5h 44m
Sun, Jun 24
BOS
SFO
6h 34m
Trip: 8 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 64 reviews
Overall
8.2
Boarding
8.3
Comfort
8.3
Crew
8.6
Entertainment
8.0
Food
7.8
SFO
BOS
Excellent 10.0

Every aspect perfect. Organized_generous leg room snacks and movies. Employees efficient (although this may be better than fake-happy tho) but perfect otherwise.

SFO
BOS
Excellent 10.0

Everything. It was a great experience. We have been flying frontier for last couple years and forgot what its like to sit on real seats, have snacks for free, entertainment and super great staff... Thanks! We will fly you again soon

SFO
BOS
Excellent 10.0

The staff makes the trip very enjoyable - they were friendly and patient. The wifi is convenient and the snacks are tasty.

N/A

SFO
BOS
Excellent 10.0

Great overall experience with JetBlue!

SFO
BOS
Excellent 10.0

TV movies. Great staff. Comfortable and clean.

I tried to get an aisle seat several times and was told that they were completely booked up in economy and when I boarded there were many many vacant seats that I noticed. I thought that was strangely bizarre.

Wed, Jul 18
SFO
BOS
5h 44m
Tue, Jul 31
BOS
SFO
6h 43m
Trip: 14 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Aug 4
SFO
BOS
5h 44m
Sat, Aug 11
BOS
SFO
6h 34m
Trip: 8 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 64 reviews
Overall
8.2
Boarding
8.3
Comfort
8.3
Crew
8.6
Entertainment
8.0
Food
7.8
SFO
BOS
Excellent 10.0

The adequate legroom.

SFO
BOS
Excellent 10.0

TV movies. Great staff. Comfortable and clean.

I tried to get an aisle seat several times and was told that they were completely booked up in economy and when I boarded there were many many vacant seats that I noticed. I thought that was strangely bizarre.

SFO
BOS
Excellent 9.3

The service and seats in Mint are amazing.

Food is just so-so. I've had much better in other first class cabins.

SFO
BOS
Excellent 10.0

Everything was perfect,the seating and the service and their crew.

Waiting to get off

SFO
BOS
Excellent 8.6

Flight was delayed over 80 minutes - warning of delay occured after I was already at airport, through security.

Wed, Aug 1
SFO
BOS
5h 44m
Wed, Aug 8
BOS
SFO
6h 30m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Feb 27
SFO
BOS
5h 25m
Wed, Feb 28
BOS
SFO
6h 45m
Trip: 2 days
6.2GoodShow reviews
Overall 6.2 Good
Based on 184 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
BOS
Good 6.0

Captain kept us inform and did what he could to arrive close to schedule.

Delayed departure and flight attendant not courteous.

SFO
BOS
Good 6.6

My entertainment console was the only one that was busted.

SFO
BOS
Good 7.3

Large aircraft half to 3/4 full, so boarding and leaving were smooth.

Flight attendant passed me by when he was collecting food orders. I never had the chance to get food.

SFO
BOS
Good 6.0

complimentary water and snacks while waiting in line to board delayed flight

Flight delay due to late arrival of flight crew. Should have backup flight attendants for these situations, esp. at a large airport like SFO. Getting in at 2:30 am made for a miserable trip. Should have offered complimentary dinner to everyone when there is that much of a delay.

SFO
BOS
Good 7.3

Having the middle seat always sucks. They also didn't have inflights personal entertainment. And since everyone uses the headphone jack, they're loose and your headphones don't stay in. Hint: next time make the jack horizontal instead of vertical.

Show more results

San Francisco to Boston Logan International Flight Information

Avg. Flight Duration 6h 13m
Flights Arrive in Boston Logan International
Flights Depart from San Francisco
Flight Price $239
Distance 2697 miles
Airlines American Airlines, Sun Country Air, JetBlue, United, Delta
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.