$446 Find Cheap Flights from San Francisco to Cambridge

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 Cambridge departing on 7/4. 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

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Everything you should know

Cheapest round-trip
$793
TAP AIR PORTUGAL
Thu 9/17Tue 9/22
SFO - LGW • 2 stops
Cheapest non-stop
$830
Typical prices: $609-$864
British Airways
Sat 9/26Thu 10/8
SFO - LHR • Non-stop
Arrival airport
You can't fly directly to Cambridge. It is served by London (LON), located 49.3 miles from Cambridge.
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Flight Deals
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Flight Deals

Cheap Flights from San Francisco to Cambridge (SFO-LON)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Cambridge 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 Cambridge

Thu, Sep 17 - Tue, Sep 22
TAP AIR PORTUGAL Logo
4:30 pm - 8:25 pm
SFO
-
LGW
19h 55m
2 stops
TAP AIR PORTUGAL Logo
4:25 pm - 2:35 pm
LGW
-
SFO
30h 10m
1 stop
$793TAP AIR PORTUGAL
Thu, Sep 10 - Tue, Sep 22
TAP AIR PORTUGAL Logo
4:30 pm - 9:45 am
SFO
-
LGW
33h 15m
1 stop
TAP AIR PORTUGAL Logo
4:25 pm - 2:35 pm
LGW
-
SFO
30h 10m
1 stop
$794TAP AIR PORTUGAL
Thu, Sep 3 - Mon, Sep 28
Scandinavian Airlines Logo
4:45 pm - 4:25 pm
SFO
-
LHR
15h 40m
2 stops
Scandinavian Airlines Logo
9:05 pm - 2:40 pm
LHR
-
SFO
25h 35m
2 stops
$794Scandinavian Airlines
Thu, Sep 10 - Sat, Sep 26
Scandinavian Airlines Logo
4:45 pm - 6:30 pm
SFO
-
LHR
17h 45m
1 stop
Scandinavian Airlines Logo
6:40 am - 2:40 pm
LHR
-
SFO
16h 00m
1 stop
$795Scandinavian Airlines
Thu, Sep 17 - Mon, Sep 28
TAP AIR PORTUGAL Logo
4:30 pm - 8:25 pm
SFO
-
LGW
19h 55m
2 stops
TAP AIR PORTUGAL Logo
4:25 pm - 1:35 pm
LGW
-
SFO
29h 10m
1 stop
$795TAP AIR PORTUGAL
Thu, Sep 3 - Mon, Sep 7
Scandinavian Airlines Logo
4:45 pm - 4:00 pm
SFO
-
LHR
15h 15m
1 stop
Scandinavian Airlines Logo
7:50 pm - 2:40 pm
LHR
-
SFO
26h 50m
2 stops
$796Scandinavian Airlines
Wed, Sep 9 - Mon, Sep 28
Scandinavian Airlines Logo
4:45 pm - 9:35 pm
SFO
-
LHR
20h 50m
2 stops
Scandinavian Airlines Logo
7:50 pm - 2:40 pm
LHR
-
SFO
26h 50m
2 stops
$797Scandinavian Airlines
Wed, Sep 30 - Tue, Oct 6
Air Canada Logo
6:15 am - 6:30 am
SFO
-
LHR
16h 15m
2 stops
Air Canada Logo
6:50 am - 8:59 pm
LHR
-
SFO
22h 09m
2 stops
$801Air Canada
Mon, Aug 17 - Wed, Aug 26
Condor Logo
4:30 pm - 6:50 pm
SFO
-
LGW
18h 20m
1 stop
Condor Logo
7:40 pm - 2:30 pm
LGW
-
SFO
26h 50m
1 stop
$804Condor
Tue, Oct 27 - Tue, Nov 10
Virgin Atlantic Logo
2:50 pm - 4:35 pm
SFO
-
LCY
18h 45m
1 stop
Virgin Atlantic Logo
8:05 pm - 11:45 am
LCY
-
SFO
23h 40m
1 stop
$869Virgin Atlantic
Useful Info

Good to know

Cheapest flight$446
Flight from San Francisco to London Gatwick Airport

When to book flights from San Francisco to Cambridge

Are your dates flexible? Find out the best times to travel from San Francisco to Cambridge based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from San Francisco to Cambridge: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from San Francisco to Cambridge 
Verified travelerFlew with British Airways
SFO
-
LHR
Dec 2025
If not getting off in London make sure you have enough time to get to your connecting gates
Verified travelerFlew with Iberia
SFO
-
LHR
Jan 2026
Buy your flight directly from the airline because the cancellation process is purgatory
GeraldFlew with Virgin Atlantic
SFO
-
LHR
Jun 2025
Virgin Atlantic uses terminal 3. Much faster clearing customs than terminal 5
Verified travelerFlew with American Airlines
SFO
-
LHR
Jun 2025
Large number of passengers on the flight so arrive early to the airport and to the boarding gate
PallaviFlew with British Airways
SFO
-
LHR
Apr 2025
Eat at the lounge first so you are not stuck eating overcooked cheese ravioli
TapanFlew with British Airways
SFO
-
LHR
Oct 2024
Great baggage policy in BA.. The worst part was experience at London Heathrow airport. Security was slow, too many people. Almost lost connecting flight even with 2 hours layover.

FAQs for booking flights from San Francisco to Cambridge

  • Which airports will I be using when flying from San Francisco to Cambridge?

    When flying out of San Francisco you’ll be using San Francisco. Cambridge does not have its own airport so you’ll be flying into nearby London All airports airport, which is 49.3 mi away.

  • What’s the cheapest day of the week to fly between San Francisco and Cambridge?

    Consider leaving on a Monday and avoid Fridays if you are looking for the best rates. For your return to San Francisco, you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

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

    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 Cambridge.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cambridge 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 Cambridge?

    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 Cambridge with an airline and back to San Francisco with another airline.

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

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

  • Which airlines provide the cheapest flights from San Francisco to Cambridge?

    In the last 5 days, the cheapest one-way ticket between San Francisco and Cambridge found on KAYAK was with Aer Lingus for $192. JetBlue offered a round-trip connection from $151 and Iberia from $400.

Top tips for finding cheap flights from San Francisco to Cambridge

  • There is no airport in Cambridge. Instead, you’ll be flying into London All airports when flying between San Francisco and Cambridge.
  • The cheapest flight from San Francisco to Cambridge was found 39 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly is February.

Reviews of the top 5 airlines serving San Francisco to Cambridge

 
Need help choosing which airline to fly with from San Francisco to Cambridge? 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.
7.8
DeltaOverall score based on 8451 reviews
8.5Crew
7.2Food
7.8Entertainment
7.8Comfort
8.1Boarding
Airline reviews

Flight delayed four separate times. I’m now one hour hours late to landing.

2.0 MediocreTravis, Jun 2026
SFO - LAX
Read more Delta reviews

Flight delayed four separate times. I’m now one hour hours late to landing.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

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

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

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

New boarding doesn't make sense. Filling front first is slow.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Great staff great experience, made a 2 hour delay very bearable

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

My only complaint is that the pocket in front of me was ripped and my things, like iPad and airline magazines, kept slipping to the floor.

Flight delayed yet again. Crew apathetic and unhelpful re affect on connecting flight.

Cabin crew on our flight showed lack of any customer service gruff and acting annoyed if you asked anything and I mean anything Example a man on the seat over dropped his beer on my husbands blanket We asked if we could switch out blankets cabin crew Said. No we don’t have any extras OK well can you take the wet one Cabin crew looked disgusted and annoyed Took it no OK or yes just a growl

No extra snacks were available. Meals quality is terrible. Crew was not friendly.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

It was perfect! United Airlines staff was extremely caring, super friendly and professional

United has maintenance issues and can then never recover. No operations ability and simple issues always turn into multiple hours long cascading delays. Worst airline on earth.

I paid for a confirmed upgraded aisle seat and was moved to a center seat in the back of the plane at the last minute.

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Waited for our plane from HNL so we didn't miss connection. AMAZING Service for that, then really clean plane. Nice airline attendants.

Old plane with broken interiors, unclean restrooms and non attentive crew.

The infotainment system is liking compared to Airlines like Emirates Etihad Singapore Qantas

Flight was delayed multiple times without giving any particular reason and the only thing that was communicated was that 'Aircraft is getting ready'. I was stuck at SFO airport for 15 hours and finally took Southwest Airlines flight back home to Dallas.

I was not clear if food was offered or not.

Agency very bad had to cancelled my booking too many changes in the flight changed my flight to 1 week

Take-off delayed an hour because of a missing flight officer, so,arrived in Charlotte lates causing many passengers to miss connections. Otherwise a very good flight, safe and comfortable, with an excellent professional crew.

B-class on an old plane with antiquated amenities and poor service. Landed in Rome w/o bag that didn’t make the connection (plenty of time in London). Bag will come to hotel NOT the day it lands but the following night!! Still waiting for bag…BA had nothing to offer in support and couldn’t even tell me their comp, told to submit receipts and then I’ll learn what is or isn’t covered.

Premium Economy Good crew, good service, excellent food. Seat back screen just not bright enough.

The SFO Lounge crew were amazing. The bartender Faris was great. Thanks!

Not good. One of my luggage is missing. And until now they can’t find it

British Airways staff are very polite and willing to help.

The business class configuration on this plane is really contorted and tight in space. To have to climb over another’s feet to go to the restroom was less than comfortable. Also, I was served meals handing all plates and drinks in front of the random flyer facing me on the aisle. I felt it was an elevated comfort + economy cs business class. Also, the interface at Heathrow is awful. The lounge had minimal plugs to recharge devices and it was so crowded, There were few seats available in both the North and South lounges. Rarely anyone came by to clean up after the last 3-4 people who sat in that chair.

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

Wish the food and overall service was better. They treat Business class passengers same as economy

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

Crying baby the ENTIRE flight. Not your fault, but I paid 2700 for a premium economy ticket and it wasn't worth it. should have just stuck with coach. flight attendants very mediocre - minimal effort. Plane didn't seem very clean. Didn't have any cleansing wipes - most airlines give you this when you board. Flat screen scrolling didn't work. Toiletry case a joke - why bother at all?

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

This was the second time on BA, food terrible, bathrooms gross,( granted, that was mostly due to the disgusting children urinating all over it)boarding was late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress. Seats were painful, that's what you get for traveling like a poor in economy, right BA? Should have been able to afford business or first class if you want to actually be able to walk upright without back pain after a trip.

The delay was not communicated via text and the person who helped with check in also didn’t inform me about the delay. I ended up missing my connection and it was a waste of 5 hours. The crew didn’t mention there would be someone at the gate informing of if I would be rebooked and there was no signage. Overall a very poor experience. The British Airways app was also very buggy, and didn’t work. I will avoid flying with British Airways when possible.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

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

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