SFO - BFS

$386 Find Cheap Flights from San Francisco to Belfast Intl Airport

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 Intl departing on 8/12. 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

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

 
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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Everything you should know

Cheapest round-trip
$912
Multiple Airlines
Wed 9/9Sun 9/20
SFO - BFS • 3 stops
Cheapest one-way
$386
Typical prices: $478-$485
Multiple Airlines
Wed 8/12
SFO - BFS • 2 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 Intl!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from San Francisco to Belfast Intl (SFO-BFS)

 
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 Intl 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 Intl

Wed, Sep 9 - Sun, Sep 20
Multiple Airlines Logo
6:00 am - 3:55 pm
SFO
-
BFS
25h 55m
3 stops
Multiple Airlines Logo
6:25 am - 2:05 pm
BFS
-
SFO
39h 40m
3 stops
$912Multiple Airlines
Wed, Sep 9 - Sun, Sep 20
Multiple Airlines Logo
8:10 am - 1:45 pm
SFO
-
BFS
21h 35m
2 stops
Multiple Airlines Logo
6:25 am - 2:05 pm
BFS
-
SFO
39h 40m
3 stops
$933Multiple Airlines
Wed, Sep 9 - Sun, Sep 20
Multiple Airlines Logo
8:10 am - 1:45 pm
SFO
-
BFS
21h 35m
2 stops
Multiple Airlines Logo
10:00 pm - 3:50 pm
BFS
-
SFO
25h 50m
2 stops
$1,081Multiple Airlines
Mon, Jul 27 - Wed, Aug 5
Multiple Airlines Logo
6:00 am - 9:35 pm
SFO
-
BFS
31h 35m
3 stops
Multiple Airlines Logo
7:35 am - 4:40 pm
BFS
-
SFO
41h 05m
3 stops
$1,084Multiple Airlines
Fri, Dec 11 - Tue, Dec 29
Multiple Airlines Logo
8:25 am - 6:30 pm
SFO
-
BFS
26h 05m
3 stops
Multiple Airlines Logo
7:05 am - 3:35 pm
BFS
-
SFO
16h 30m
2 stops
$1,185Multiple Airlines
Mon, Jul 27 - Wed, Aug 5
Multiple Airlines Logo
11:10 am - 11:15 am
SFO
-
BFS
16h 05m
2 stops
Multiple Airlines Logo
7:35 am - 4:40 pm
BFS
-
SFO
41h 05m
3 stops
$1,202Multiple Airlines
Fri, Dec 11 - Tue, Dec 29
Multiple Airlines Logo
8:30 am - 6:05 pm
SFO
-
BFS
25h 35m
2 stops
Multiple Airlines Logo
7:05 am - 3:35 pm
BFS
-
SFO
16h 30m
2 stops
$1,237Multiple Airlines
Sun, Aug 9 - Sun, Aug 16
Multiple Airlines Logo
11:10 am - 7:25 pm
SFO
-
BFS
24h 15m
2 stops
Multiple Airlines Logo
10:00 pm - 3:50 pm
BFS
-
SFO
25h 50m
2 stops
$1,270Multiple Airlines
Fri, Dec 11 - Tue, Dec 29
Multiple Airlines Logo
8:25 am - 6:30 pm
SFO
-
BFS
26h 05m
3 stops
Multiple Airlines Logo
2:20 pm - 2:45 pm
BFS
-
SFO
32h 25m
3 stops
$1,271Multiple Airlines
Fri, Aug 7 - Fri, Aug 14
Multiple Airlines Logo
5:35 pm - 9:15 pm
SFO
-
BFS
19h 40m
2 stops
Multiple Airlines Logo
7:20 am - 12:00 pm
BFS
-
SFO
36h 40m
3 stops
$1,340Multiple Airlines
Useful Info

Good to know

Cheapest flight$386
Flight from San Francisco to Belfast Intl Airport

When to book flights from San Francisco to Belfast Intl

Are your dates flexible? Find out the best times to travel from San Francisco to Belfast Intl 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 San Francisco to Belfast Intl Airport flights

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

    In the last 5 days, the lowest price for a flight from San Francisco to Belfast Intl Airport was $386 for a one-way ticket and $912 for a round-trip.

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

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

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

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

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

    oneworld is the only airline alliance operating flights between San Francisco and Belfast Intl Airport.

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

    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 Intl Airport.

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

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

    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 Intl Airport with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and BFS can sometimes prove cheaper using this method.

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

    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 Intl Airport 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 airline flying from San Francisco to Belfast Intl

 
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 Intl? 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.
6.7
British AirwaysOverall score based on 8072 reviews
6.4Food
7.7Crew
6.9Boarding
6.4Entertainment
6.8Comfort
Airline reviews

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

10.0 ExcellentAnonymous, Apr 2026
SFO - LHR
Read more British Airways reviews

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 Belfast Intl

Information on your arrival and departure airports