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Find cheap flights from San Francisco to London

SFO - YXU

Find cheap flights from San Francisco to London

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San Francisco (SFO)
London
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Top airline flying San Francisco to London

Scores according to KAYAK customer reviews

7.0
United Airlines
Overall score based on 67,874 reviews
7.4
Boarding
6.9
Comfort
7.7
Crew
6.5
Entertainment
6.4
Food
Airline reviews

Cons: "Delayed almost 2 hours, causing me to miss my connection flight. Had to pay extra $460 to purchase next available flight which delayed my arrival time 6 hours! Horrible experience !"

Pros: "Nothing"

Pros: "Good coverage help at ticket kiosks. Flight crew and attendants were attentive during flight in the area of the plane I observed. Good use of lemon sorbet to finish off dinner."
Cons: "An hour Delay in getting plane ready for boarding this was not due to any weather issue that could be observed. Pasta did not look appetizing and appeared too large of pasta and too much cheese to break into mouthfuls with a fork easily.There was a small amount of lettuce without a dressing and some cooked quinoa like grain next it I did not understand what the cooks were trying to do with. Seat is uncomfortable for tall passengers such as myself at 6'5". Important to bring neck support. I had brought one but it was not stiff enough to offer good support. It also would have been a nice touch for writing implements of one sort or another to have been passed out to complete the board card that needed to be filled when entering U.K."

Pros: "Personal tv was on this flight. Everything on time and great service"

Pros: "Crew on board was professional."
Cons: "Plane was delayed over two hours due to mechanical issues. I missed my connections. Three separate United employees assure me I'd be rebooked for onward travel. I was sent to three different counters regarding my onward travel - sent from terminal to terminal. No onward travel was resolved and I eventually just paid for a train onward. I was told this was because it was a weather delay but at the boarding gate multiple announcements were made about repairing the plane and replacing batteries. United deliberately wasted my time and never fulfilled their obligations to get me to my destination. (Additionally, wifi and entertainment was not functional the entire 11 hour flight)"

Pros: "Polaris"
Cons: "Nothing"

Pros: "Like the free snacks while we waited 2 hours to board."
Cons: "Did not like waiting 2 hours to board."

Cons: "We could not check in on line and there was no Austrian Air agent at SFO (San Francisco). Ultimately needed to check in at United but their agents were uncertain about our tickets. Typical United service - cranky flight attendants, poor food - but we arrived on time and in one piece."

Cons: "NO INTERNET!!!"

Pros: "Flight was very smooth and timely"
Cons: "Wifi didn't work properly. Couldn't watch anything entirely. Frankfurt Airport is poor logistically"

Pros: "Eventually got home safe and sound."
Cons: "Delayed after boarding because of a technical issue and then after waiting over an hour we had to deplane and board another plane in a different terminal. That was a bummer"

Pros: "New airplane"
Cons: "Good tray in economy very small, didn't have my choice for food so stuck with chowmein, not good"

Pros: "Flight left on time and landed on time. Staff was nice and all went seamlessly."
Cons: "Wi-Fi and United app doesn't work"

Pros: "Movie deal was enjoyable. But a tough week for the friendly skies!"
Cons: "Mechanical caused me to miss my connection. Exterior of 777 had paint peeling off the fuselage, which is a bad sign. Plane needs an overhaul"

Pros: "Nothing delay"
Cons: "Mahor delay and tarmac issue refund immideate"

Pros: "Super easy & smooth flight. We left on time & arrived early."
Cons: "Nothing really. Honestly, I slept for half the trip, so it was pretty uneventful."

Pros: "Easy quick boarding - attendants seemed to watch and keep the misc items from going into the overhead."
Cons: "Being woken up to see if I wanted water or food"

Pros: "Boarding was much more organized with lines marked for each boarding group. The crew was super friendly. Also, I received a whole can of cran-apple juice, which was much nicer than just a small cup. The tv options were also fairly priced for the options available."

Cons: "Long delay in San Francisco"

Cons: "My flight was delayed 2 times"

Pros: "okay"
Cons: "okay because it was short"

Pros: "The stewardess miss polanxo was great"

Cons: "The flight from Newark was delayed and caused me to miss my flight from SFO to TPE. The gate staff on arrival did nothing to help ensure that I would make the flight. I chose United because i expected reliable service, instead I got the worst ever experience with an airline."

Pros: "None"
Cons: "-It said you can watch the movie using your personal device using WIFI; 99% the WIFI will drop or not working at all."

Cons: "My itinerary had to completely change."

Pros: "It was a old plane , entertainment was horrible . There was no choice of movies and other channels . For a flight this long they should have thought about this"

Pros: "Nice new 737-800, friendly crew"
Cons: "I volunteered to be bumped to a later flight, which was handled well; however my checked bags did not get transferred. The baggage desk at YVR was very helpful, but the United lost bags office was unreachable by phone. They always had very long hold times."

Pros: "Nah, sorry I don't have any special for the flight!"
Cons: "The United flight so far was a terrible experience for me. the food is so salty and so little!! I am a person who love to eat so much, but the food (noodle) was very bad, I didn't finish it. The ice-cream at first I'm so excited and the taste very good! However, it been already melted so... I'm so disappointing. There is no entertainment on plane... I'm so boring"

Pros: "The welcoming feeling that I received from the flight attendants."
Cons: "There was a drunk man on the flight. He kept making so many disruptions."

Cons: "The flight was run by United with an older aircraft The chairs were very small and didn't have entertainment tv. The food was okay."

Cons: "The flight was operated by United, but there was no clear indication that it was so and so checking in at the Lufthansa desk was pointless. Seats are extremely tight and the entertainment system is outdated."

Cons: "We got on board, waited 20 minutes. Capt said it was a bad reverser, and we were waiting on paperwork for 15 minutes. Long story short, they make us leave the plane after 2.5 hours. Then we wait in the airport for another 2.5 hours. I missed my connection and spent 10 hours in Chicago."

Pros: "Easy boarding (almost last to board) Decent enough meals. Hit and miss. Excellent breakfast, terrible sandwich, nice main meal. Crew were pretty helpful and pleasant. Comfortable. Got lucky, with 1 full spare seat. Seats seemed roomier anyway, standard economy, possibly due thinner seats (no screens)"
Cons: "Streaming on free wifi of free movies wasn't working on my PC. Tried all their tips and options. This is a big drawback with letting customers use their own devices. Can get complicated. Surprised that Adobe Flash + DRM software is required. They're supposed to be downloadable from the inflight system, but that wasn't working. Crew don't have expertise to deal with this (wasn't expecting them to). Movie selection looked decent enough."

Cons: "I am only 5 ft tall & petite but felt like a sardine with my knees hitting the seat in front. The overhead bins were so small that they couldn't fit carry ons efficiently so everyone was scrambling for space, delaying the boarding process & heightening frustration & stress. Boarding process was also inefficient causing delays."

Pros: "The crew was friendly"
Cons: "It was delayed three hours. The space was cramped. The food were horrible. There were no individual tv screen or outlets to charge electronic devices."

Cons: "Everything was horrible. The fried noodles that they served was too soggy. The crew was understaffed but it won't justified their bad service. I called twice and noone came to helped. They had a young Asian male flight attendant that was flirting with other 2 guy passengers. But when other passengers approached him he wasn't very nice at all, he had this unpleased face all the time, It was hot and we couldn't connect to the internet. It was just horrible. Sucks paying so much for a very bad service."

Pros: "N/A"
Cons: "My bags were tagged to Dakar but my final destination was Conakry. I was told my United that South African airlines doesn't have a "luggage contract" with ASky so my bags could not be tagged to my final destination. This is bizarre because Kayak didn't inform me of this when I bought my ticket otherwise I would never have bought that flight."

Pros: "Very little to like"
Cons: "First : I bought Lufthansa tickets but was flown w United. Rude staff terrible food and unbearable seating no tv monitors per seat. I travel to Europe 4 time a year... This was without question the worse"

Pros: "It was my grandson's first plane ride. They let us board early because I was managing two carry on suitcases. The flight was smooth and he loved the apple juice. He learned so much by looking out the window and seeing the ground and the clouds."

Pros: "That the flight came in to London 30 mins sooner than its scheduled time."
Cons: "Terrible behavior by the crew. It felt truly humiliating to be spoken to condescendingly by them and treated very badly."

Pros: "I liked that they waited for me because my flight was late getting in to San Francisco."

Pros: "The boarding process got people on the plane quickly."
Cons: "None of the entertainment units worked in my entire section, about 19 rows all together. I was not able to access the light or call function. These should be separated from the media units and should be functional at all times regardless of technical issues. Food choices were interesting. The barley salad was quite strange. I would take that off the menu, if possible. It was quite inedible. Flavor profile was not good."

Pros: "The crew was extremely helpful on both flights. This made the whole experience very pleasant."

Pros: "The non stop flight was nice."
Cons: "Everything on the plane was broken, the seats, ear phones, it was an old plane, WIFI broken, so you couldn't watch a movie. The bathrooms were GROSS!"

Pros: "Computerised and self check-in was good and fast."
Cons: "Require united app on smartphone or tablet. Don't expect personal screen as its not available. Unfriendly crew and food was bad."

Cons: "Flight was delayed by over 2 hours. Then halfway through the boarding process there was a glitch in the system and I believe that they lost the seat reservations, which delayed us even further."

Pros: "United got my passengers from origin to destination on time."
Cons: "UA staff tried to intimidate my daughter into redesign sting her registered service dog as a "comfort aninal", and demanded that she describe the nature of the dog's service, IN DIRECT VIOLATION OF THE AMERICANS WITH DISABILITIES ACT. UA staff also, at the outset of the flight, attempted to confiscate all food and drink items from passengers, so that UA could immediately sell food and drink items to passengers."

Cons: "Seats were not comfortable, no individual tv screens"

Pros: "You can carry up to 16kg in your carry on. That's great."
Cons: "Food was below average and only twice during a 14 hours flight. Plus, no free snack available... you have to pay. I will think twice about travelling with United for an international flight."

Read more about United Airlines
COVID-19 information

Safety measures for airlines flying from San Francisco to London

Airlines flying from San Francisco to London have enacted additional safety measures and adjusted policies to better accommodate travellers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from San Francisco to London

Mandatory masks

Masks required on board, masks provided on flights from San Francisco to London

Social distancing seating

Middle seats unavailable to book on flights from San Francisco to London

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from San Francisco to London

Book cheap flights from San Francisco to London

Recent round-trip flight deals

3/3
Wed.
2 stops
United Airlines
25h 34m
SFO - YXU
7/3
Sun.
2 stops
United Airlines
17h 44m
YXU - SFO
3/3
Wed.
2 stops
United Airlines
25h 34m
SFO - YXU
7/3
Sun.
2 stops
United Airlines
23h 29m
YXU - SFO
12/2
Fri.
2 stops
United Airlines
32h 24m
SFO - YXU
19/2
Fri.
2 stops
United Airlines
17h 49m
YXU - SFO
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