$266 Find Cheap Flights from San Francisco to Belfast

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 Belfast departing on 8/6. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Belfast

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Belfast, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Belfast, as well as popular online travel agencies
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Flights Deals

Cheap Flights from San Francisco to Belfast (SFO-BHD)

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

Sun, Sep 21 - Mon, Sep 29
British Airways Logo
7:20 pm - 5:40 pmSFO-BHD
14h 20m1 stop
British Airways Logo
7:30 pm - 1:50 pmBHD-SFO
26h 20m1 stop
$633British Airways
Find Deal
Sun, Sep 21 - Sun, Sep 28
British Airways Logo
4:30 pm - 5:40 pmSFO-BHD
17h 10m1 stop
British Airways Logo
8:05 pm - 1:50 pmBHD-SFO
25h 45m1 stop
$663British Airways
Find Deal
Tue, Sep 2 - Sun, Sep 7
British Airways Logo
4:25 pm - 5:30 pmSFO-BHD
17h 05m2 stops
British Airways Logo
8:05 pm - 1:50 pmBHD-SFO
25h 45m1 stop
$667British Airways
Find Deal
Tue, Sep 16 - Wed, Sep 24
Iberia Logo
12:14 pm - 5:30 pmSFO-BHD
21h 16m2 stops
Iberia Logo
6:50 am - 1:50 pmBHD-SFO
15h 00m1 stop
$677Iberia
Find Deal
Tue, Sep 16 - Wed, Sep 24
Iberia Logo
12:14 pm - 5:30 pmSFO-BHD
21h 16m2 stops
Iberia Logo
6:50 am - 10:51 pmBHD-SFO
24h 01m2 stops
$687Iberia
Find Deal
Wed, Sep 17 - Thu, Sep 25
Delta Logo
1:59 pm - 9:15 pmSFO-BHD
23h 16m2 stops
Delta Logo
6:30 am - 11:45 amBHD-SFO
13h 15m1 stop
$759Delta
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Wed, Sep 17 - Thu, Sep 25
Delta Logo
1:59 pm - 9:15 pmSFO-BHD
23h 16m2 stops
Delta Logo
6:30 am - 4:00 pmBHD-SFO
17h 30m2 stops
$769Delta
Find Deal
Fri, Sep 19 - Fri, Sep 26
American Airlines Logo
3:59 pm - 6:15 pmSFO-BHD
18h 16m2 stops
American Airlines Logo
11:55 am - 11:16 pmBHD-SFO
19h 21m2 stops
$782American Airlines
Find Deal
Tue, Sep 2 - Sun, Sep 7
 Logo
7:20 pm - 7:40 pmSFO-BFS
16h 20m2 stops
 Logo
6:10 am - 6:10 pmBFS-SFO
20h 00m1 stop
Tue, Sep 2 - Sun, Sep 7
 Logo
4:30 pm - 4:50 pmSFO-BFS
16h 20m1 stop
 Logo
6:10 am - 6:10 pmBFS-SFO
20h 00m1 stop
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KAYAK's insights & trends for San Francisco to Belfast flights

Get data-powered insights and trends into flights from San Francisco to Belfast to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from San Francisco to Belfast?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Belfast, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Francisco to Belfast is October, where tickets cost $588 (return) on average. On the other hand, the most expensive months are January and November, where the average cost of round-trip tickets is $1,339 and $1,175 respectively.

Good to know

Cheapest flight$266
Flight from San Francisco to Belfast Intl Airport

When to book flights from San Francisco to Belfast

Are your dates flexible? Find out the best times to travel from San Francisco to Belfast based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Francisco to Belfast

  • What is the cheapest flight from San Francisco to Belfast?

    In the last 3 days, the lowest price for a flight from San Francisco to Belfast was $266 for a one-way ticket and $633 for a round-trip.

  • Do I need a passport to fly between San Francisco and Belfast?

    Yes, you’ll need a passport to travel to Belfast from San Francisco.

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

    When flying out of San Francisco you will be using San Francisco. You will be landing at one of these airports: Belfast Intl or Belfast City.

  • Which aircraft models fly most regularly from San Francisco to Belfast?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Francisco to Belfast?

    oneworld, and SkyTeam are the airline alliances operating flights between San Francisco and Belfast, with oneworld being the most commonly used for this route.

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

    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 Belfast.

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

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

    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 Belfast 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 Belfast?

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

Reviews of the top airlines flying from San Francisco to Belfast

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Belfast. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Belfast? 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.
7.2
American AirlinesOverall score based on 10000 reviews
6.9Entertainment
7.5Boarding
6.5Food
7.2Comfort
8.0Crew
Airline reviews

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

10.0 ExcellentFraxys, Jun 2025ONT - DFW
Read more American Airlines reviews

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Cramped seats. FAA should make airlines have more legroom, for even short people complain

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

Eventless. It was a good flight and good crew. Can’t complaint.

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

British Airways staff are very polite and willing to help.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

Worst seats I’ve ever had !!! The seats were very narrow and uncomfortable and misaligned with the seats in front of mine leading to bottom of the seat in front of mine pressing on my legs for 15.5 hours !

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

More Indian vegetarian food options would have been better Availability of seat selection free of charge 72 hours before departure would be great

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.

This was the second time on BA, food terrible, bathrooms gross, boarding late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress.

The flight was delayed twice and because of that, we missed our connecting flight. British Airways then attempted to put us on the last flight to Milan from London which would have kept us in the airport for 12 hours. We had to speak to several levels of bureaucracy until BA management let us fly on a flight that only kept us in the airport for two hours. If there was an earlier flight, why weren’t we put on that flight from the start? Unacceptable behavior from what was once my favorite carrier.

The payment system was not working so was unable to connect wifi the entire flight

everything to do with KAYAK was terrible. Your customer facing departments are utterly useless, timewasting and unhelpful.

I ordered short ribs for main course. It tasted sweet, really sweet. Horrible.

The screen didn’t work and I didn’t get the seat upgrade I paid $300 for. They were no help with that,

Paid $180 for seat selection, and selection essnt honored. Have to call for a refund.

My flights were great and the crew on them was lovely especially the London to Barcelona flight as Al & AJ were so amazingly nice. I wish they would be my crew always as they have the best customer service. Sadly both flights were delayed the first one from Vegas was because they clearly loaded the cargo wrong the plane was off balance making us 2 hours late. This made me miss my connection and sadly it was challenging rebooking while I was on the flight. I will never use Kayak again as there was no customer service number or live chat and you rebooked me on a flight 2 days later. I had my mom call BA to change it which she did after spending an hour on hold. This should not be so difficult. My second flight was an hour delayed due to not being able to disconnect the bridge from the plane but I did finally make it home.

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

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