$288 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 11/17. 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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Flight 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

Wed, Dec 3 - Sun, Dec 7
British Airways Logo
5:30 pm - 4:35 pmSFO-BHD
15h 05m1 stop
British Airways Logo
3:10 pm - 6:45 pmBHD-SFO
35h 35m1 stop
$697British Airways
Find Deal
Wed, Dec 3 - Sun, Dec 7
Delta Logo
1:55 pm - 9:00 pmSFO-BHD
23h 05m1 stop
Delta Logo
6:30 am - 11:50 amBHD-SFO
13h 20m1 stop
$700Delta
Find Deal
Wed, Dec 3 - Sun, Dec 7
Delta Logo
9:00 am - 9:00 pmSFO-BHD
28h 00m2 stops
Delta Logo
5:20 pm - 11:50 amBHD-SFO
26h 30m1 stop
$704Delta
Find Deal
Wed, Dec 3 - Sun, Dec 7
Delta Logo
11:55 am - 4:50 pmSFO-BHD
20h 55m2 stops
Delta Logo
6:30 am - 3:57 pmBHD-SFO
17h 27m2 stops
$714Delta
Find Deal
Fri, Dec 5 - Tue, Dec 9
Delta Logo
11:55 am - 4:50 pmSFO-BHD
20h 55m2 stops
Delta Logo
6:30 am - 3:57 pmBHD-SFO
17h 27m2 stops
$736Delta
Find Deal
Wed, Dec 3 - Sun, Dec 7
KLM Logo
11:55 am - 4:50 pmSFO-BHD
20h 55m2 stops
KLM Logo
6:30 am - 3:57 pmBHD-SFO
17h 27m2 stops
$766KLM
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
8:25 pm - 10:20 pmSFO-BFS
18h 55m2 stops
Multiple Airlines Logo
2:25 pm - 4:30 pmBFS-SFO
34h 05m2 stops
$844Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
3:40 pm - 10:00 pmSFO-BFS
23h 20m2 stops
Multiple Airlines Logo
6:15 am - 4:05 pmBFS-SFO
41h 50m3 stops
$904Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
8:30 am - 10:00 pmSFO-BFS
30h 30m3 stops
Multiple Airlines Logo
6:15 am - 4:05 pmBFS-SFO
41h 50m3 stops
$909Multiple Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
British Airways Logo
4:49 pm - 7:25 pmSFO-BHD
18h 36m2 stops
British Airways Logo
6:35 am - 8:51 pmBHD-SFO
22h 16m2 stops
$1,480British Airways
Find Deal

Everything you should know

Top airlines
British Airways
Cheapest • from $697 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$697
British Airways
Wed 12/3Sun 12/7
SFO - BHD • 1 stop
Cheapest one-way
$288
Multiple Airlines
Mon 11/17
SFO - BFS • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Belfast!
Booking Insights

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 November and January, where the average cost of round-trip tickets is $1,405 and $1,339 respectively.

Good to know

Cheapest flight$288
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 $288 for a one-way ticket and $697 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 SkyTeam 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
7.2Comfort
6.4Food
8.0Crew
7.5Boarding
6.9Entertainment
Airline reviews

The entertainment package was vast and the selections were very current. Keep updating it was great.

8.0 ExcellentAnonymous, Aug 2025SAN - DFW
Read more American Airlines reviews

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Was not able to watch most shows on the entertainment site. They would not load

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

Bad food, small seats that didn’t recline. I thought I was buying a quantas ticket so I feel like I got scammed

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Didn’t fly with them as someone had cancelled my flight

Online check-in 24 hours in advance something seems not so easy to check in to pick seats and to print a boarding pass

I like the crew, very welcoming. Food can be better. The seat arms don’t go up so. I could use the empty seat next to mine to relax better. 3hrs delay 😠

The flight was very delayed in taking off - which was out of control of the crew, but then the pilot worked hard so we only arrived about 30 minutes late. Everyone was very friendly and accommodating!

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.

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

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

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