Find cheap flights from San Francisco to Belfast from $324
This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight departing on 9/19. 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.Round-trip
1 adult
Economy
Thu 7/6
Thu 7/13
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Good to know
When to book flights from San Francisco to Belfast
Estimated round-trip price
Average price per month
Flight prices as travel date approaches
Top tips for finding a cheap flight out of San Francisco
- High season is considered to be June, July and August. The cheapest month to fly is October.
FAQs for booking flights from San Francisco to Belfast
Top 4 airlines serving from San Francisco to Belfast
Scores according to KAYAK customer reviews7.9
DeltaOverall score based on 29358 reviews
81boarding
78comfort
78entertainment
75food
85crew
81overall
Airline reviews
Cons: "The entire time there was a clogged bathroom smell coming in waves. The crew was forgetful of requests. Not a pleasant flight."
Cons: "The entire time there was a clogged bathroom smell coming in waves. The crew was forgetful of requests. Not a pleasant flight."
Pros: "The crews were very fast and efficient. The Dinner was good but the breakfast was very basic."
Cons: "The seat was so crammy and disgustingly uncomfortable"
Pros: "Check in person was very helpful in rerouting our flight."
Cons: "Our flight was delayed 3-1/2 hours. The gate crew booked us in another flight but did not issue a ticket, so after transferring to another terminal, we were sent back to the Delta terminal to be issued a ticket to a third airline since we already missed the second flight. Then, they lost our luggage"
Pros: "Seats are fine. Ordering system is up to date."
Cons: "After the first two hours of my flight (which I sleep through) I couldn’t buy a drink a soda or anything."
Cons: "The fact the the toilette was kitty cornered in the mid cabin bathroom is a joke on modern society."
Pros: "It was Ok. Some short delay but over all not too bad. Just didn't like the fact I always get seats next to the toilet"
Pros: "Flew us safely home."
Cons: "We waiting on the runway for over a long period."
Pros: "That Tillamook cheese and fruit plate was nicely done. A pleasant surprise."
Cons: "We had to wait at the gate on arrival"
Pros: "Call back service was best part."
Cons: "Booked ticket through venture card points. This meant that the email address and phone number to contact us in the event of changes was mediocre information. I was informed from Tripit that the flight was delayed, not by Delta. Reservation personnel took logical course of action to find new flight for connection that we could make because of delayed initial flight. I would recommend that they first see if there is an earlier initial flight that the customer could make, then look at finding later connecting flights. We found out about delay 8 hours prior, so we had plenty of time to get to the airport earlier. Total delay required me to take additional day off of work."
Pros: "The crew are very friendly, positive and have good sense of humor."
Cons: "The flight got delayed badly"
Cons: "No internet available (2020). For the my previous flight, a month ago, was the same problem."
Pros: "Crew is excellent, polite and personal!"
Cons: "Plane is super old and outdated. Comfort seat is not, comfortable, very tight. TV screen is not good quality, with the old controls on a handset. No touch, no 1/8 inch audio jack (it has the old 3 holes one). Wifi for streaming freezes every other second. Just make a face lift to the plane, everything else is good."
Cons: "The flight from Manchester to Amsterdam has been delayed which led insufficient time for me to transfer to HK"
Cons: "I was seated next to the restroom, which is not a pleasant experience for an international flight."
Cons: "Flight 2 hours delayed, started boarding but had to wait on line 10 more minutes on boarding ramp for plane door to be opened, upon landing in Dublin had to wait on tarmac for anther 15 minutes for stairs to arrive and be connected to airplane. Then had to wait another hour for checked luggage...."
Pros: "The crew is really welcoming"
Cons: "The seats are too narrow and a bit too hard"
Pros: "Crew were great, food, entertainment, seat and everything else was great as well."
Cons: "The flight was cancelled and had to be rerouted on United Airlines."
Cons: "Turn the lights on early making it hard to sleep"
Cons: "Too much light in the cabin because of too many screens on. Should have a separate part of the cabin with screens off allowing one to sleep more easily."
Cons: "My backpack zipper got caught in another passenger luggage in the over head holdall. The crew member tried to separate it while the owner of the other bag complained about me like I’d done it rather than it being the bags moving themselves during the flight. The flight attendant ripped my bag zipper in order to separate the bags. The other passengers bag was not damaged. He tried to fix it but dropped the zip and then pretended it was okay putting it back in the holdall. Kind of unhappy that my new back pack was damaged"
Pros: "Nothing."
Cons: "I'm still at Heathrow 12 hours later. I never made it to Oslo."
Cons: "Missing one suitcase and it will be delivered a day late supposedly"
Cons: "Club World is a super dated product. The tech is old and you are uncomfortably close to your neighbors. Also even when you buy a business class ticket British Airways makes you pay to reserve a seat in advance if you don’t have status with them. That feels over the top for a premium customer."
Pros: "As always no issues at all, I reserved my seats early to get extra leg room which is always great. Fast boarding and a quick flight, having been on a long haul flight a few hours before I needed this to get home."
Cons: "They did not give the gat no till the very end and the s cueing check was horrible when carrying a baby"
Pros: "The food, the staff and the free movie on the airplane."
Cons: "My American partner's passport expires 2 months after our return to the US. Unfortunately, the French issued a year ago the following rule: to enter France, the foreign passport must not expire at least 3 months after the return date. British Airways let us fly to London, explaining this to us, how it would be on us if there were problems further down, and that we would have to get our luggage in London. We chose to fly thinking it would be OK, we had listened to an online person who had had the same problem and the French later told him they would have let him in, also I am myself a dual citizen of France and the US, plus I am autistic, an invisible disability (in my case) that makes it impossible for me to travel alone. I usually do not even say it since not much is understood -by those who do not have it- on how to accommodate it However in London BA did not allow my partner to go on. Due to the fact yesterday was Easter Monday, the American consulate in London was closed. We have spent the night in a nearby motel and now, the next day, I am waiting alone back at the airport with our 2 large suitcases while my partner is at the American consulate. We are poor, do not have phone, currency or charger for England, and I do not do well with stress, so it is difficult. Now we cannot easily reach one another. We hope to be able to fly on a standby basis (that's what BA told us we could hopefully do) later today. Sorry for this long letter, I hope it does not bore whoever reads it (if it is even read :). Anne-Laure"
Pros: "Only one layover in London"
Cons: "Emirates, Etihad flights I thought were a bit newer and better in terms of comfort and entertainment with more charging ports etc"
Pros: "Crew were good , food was ok."
Cons: "Flight delayed again so both flights to USA and return were delayed... not a great experience . Entertainment took a cou0le of hours to sort, they had to keep resetting it"
Cons: "The screen was pretty big but quality pretty bad. Looked like 80s CRT. Also bad selection. Luckily it was a red eye flight."
Pros: "The Flight Attendant was excellent. Genuine smile, attentive, and pleasant."
Pros: "On time. Warm greetings from the pilots. New aircraft, clean, great entertainment."
Pros: "The crew did an excellent, professional job."
Cons: "There were problems with arrival at the gate necessitating delay and 3 gate changes for connecting flight. This was not fault of American but due to a plane breaking down at the original gate at LAX causing our plane to be rerouted to a different gate."
Cons: "The gate agents called all boarding groups with the boarding queue extending the entire length of the jet bridge and into the terminal beyond the gate area, making us stand in line ten to fifteen minutes longer for no reason."
Cons: "The flight was delayed for hours, and I am still trying to get to lax. All due to the pilots being too tired to fly, and due to maintenance. I would of appreciated checking into a hotel room a lot earlier than I did due to vague communication. I’m exhausted with only 2.5 hours of sleep."
Cons: "It would’ve been nice if we made it to fort Meyers!"
Pros: "Nothing"
Cons: "The seat assignments based on loyalty status - rude gate agents"
Pros: "Nothing"
Cons: "Took off 40 minutes late, rude attendants, very hot on plane, no apologies from staff for being late. Worst flight in a long time."
Cons: "I could not pre-check or request different seats on the CP website. I think that this was because of issues with the website, apparently due to IT system communication between American Airlines and Cathay Pacific.......on all six flights. On the transfer in San Francisco, Customs was closed when we arrived in San Francisco and we had to haul all of our baggage from one terminal to the other. There was no direction on how to handle this issue of Customs being closed while on the flight to San Francisco. I had to explain the issue of to the CP customer service crew in SF. The CP desk and they had never heard of it. American Airlines was equally poorly trained. I will also say that while at the CP customer service, there were three young adult males that we're not busy at the time and the watched us unload the baggage carts onto the scales and conveyor and then reloaded on to the carts to push to the AA terminal. We handled the bags two additional times because the CP staff did not know what to do and how to handle it. Other passengers were confused as well."
Cons: "They lost my luggage and have not been helpful in trying to locate it!!"
Book cheap flights from San Francisco to Belfast
Recent round-trip flight deals
8/12Sat
2 stopsDelta
26h 10mSFO-BHD
8/24Thu
1 stopDelta
30h 25mBHD-SFO
$678
11/16Thu
1 stopBritish Airways
14h 15mSFO-BHD
11/21Tue
1 stopBritish Airways
17h 45mBHD-SFO
$720
8/12Sat
2 stopsMultiple Airlines
20h 35mSFO-BHD
8/24Thu
1 stopMultiple Airlines
18h 35mBHD-SFO
$728
11/16Thu
1 stopBritish Airways
14h 15mSFO-BHD
11/21Tue
2 stopsBritish Airways
18h 09mBHD-SFO
$730
8/12Sat
2 stopsAmerican Airlines
18h 11mSFO-BHD
8/24Thu
2 stopsAmerican Airlines
21h 14mBHD-SFO
$742
8/12Sat
2 stopsBritish Airways
19h 00mSFO-BHD
8/24Thu
2 stopsBritish Airways
18h 44mBHD-SFO
$754
8/12Sat
1 stopMultiple Airlines
32h 20mSFO-BFS
8/24Thu
1 stopMultiple Airlines
15h 10mBFS-SFO
$756
8/17Thu
2 stopsAmerican Airlines
21h 04mSFO-BHD
8/22Tue
1 stopAmerican Airlines
33h 25mBHD-SFO
$808
8/12Sat
1 stopMultiple Airlines
17h 25mSFO-BHD
8/24Thu
1 stopMultiple Airlines
15h 40mBHD-SFO
$810
8/12Sat
1 stopAmerican Airlines
17h 25mSFO-BHD
8/24Thu
1 stopAmerican Airlines
15h 40mBHD-SFO
$817
7/18Tue
2 stopsAmerican Airlines
27h 36mSFO-BHD
7/29Sat
2 stopsAmerican Airlines
28h 50mBHD-SFO
$945
7/18Tue
1 stopAmerican Airlines
29h 25mSFO-BHD
7/29Sat
2 stopsAmerican Airlines
25h 38mBHD-SFO
$948
8/17Thu
1 stopBritish Airways
14h 15mSFO-BHD
8/22Tue
1 stopBritish Airways
15h 25mBHD-SFO
$1,016
7/5Wed
2 stopsAmerican Airlines
19h 39mSFO-BHD
7/12Wed
2 stopsAmerican Airlines
38h 32mBHD-SFO
$1,067
7/18Tue
1 stopMultiple Airlines
16h 30mSFO-BFS
7/29Sat
1 stopMultiple Airlines
15h 10mBFS-SFO
$1,278
7/18Tue
1 stopKLM
15h 00mSFO-BHD
7/29Sat
1 stopKLM
26h 35mBHD-SFO
$1,282
7/5Wed
2 stopsBritish Airways
19h 29mSFO-BHD
7/12Wed
1 stopBritish Airways
33h 25mBHD-SFO
$1,328
7/4Tue
2 stopsMultiple Airlines
25h 36mSFO-BFS
7/12Wed
1 stopMultiple Airlines
25h 25mBFS-SFO
$1,342
7/5Wed
1 stopKLM
18h 55mSFO-BHD
7/12Wed
1 stopKLM
26h 35mBHD-SFO
$1,352
6/20Tue
1 stopBritish Airways
17h 25mSFO-BHD
6/27Tue
1 stopBritish Airways
15h 35mBHD-SFO
$1,904
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9/19Tue
1 stopMultiple Airlines
21h 00mSFO-BFS
$324
9/19Tue
1 stopMultiple Airlines
14h 20mSFO-BHD
$327
9/19Tue
2 stopsMultiple Airlines
17h 55mSFO-BFS
$354
9/16Sat
1 stopMultiple Airlines
22h 35mSFO-BFS
$363
9/16Sat
1 stopMultiple Airlines
20h 40mSFO-BHD
$373
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2 stopsMultiple Airlines
26h 50mSFO-BFS
$390
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2 stopsMultiple Airlines
23h 35mSFO-BHD
$396
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1 stopMultiple Airlines
22h 35mSFO-BFS
$399
9/17Sun
2 stopsMultiple Airlines
20h 30mSFO-BHD
$409
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3 stopsMultiple Airlines
26h 20mSFO-BFS
$410
9/16Sat
2 stopsMultiple Airlines
22h 25mSFO-BFS
$412
9/14Thu
1 stopMultiple Airlines
21h 25mSFO-BHD
$420
9/17Sun
3 stopsMultiple Airlines
25h 40mSFO-BHD
$438
9/13Wed
1 stopBritish Airways
13h 05mSFO-BHD
$651
9/18Mon
2 stopsAmerican Airlines
19h 45mSFO-BHD
$654
9/13Wed
2 stopsAmerican Airlines
18h 37mSFO-BHD
$655
9/17Sun
1 stopKLM
18h 55mSFO-BHD
$688
9/19Tue
2 stopsDelta
26h 25mSFO-BHD
$693
9/15Fri
1 stopKLM
18h 55mSFO-BHD
$715
9/15Fri
2 stopsKLM
19h 10mSFO-BHD
$719