SFO - BFS

$392 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 8/9. 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
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$1,073
Typical prices: $882-$744
Multiple Airlines
Mon 5/18Mon 5/25
SFO - BFS • 2 stops
Cheapest one-way
$392
Multiple Airlines
Sun 8/9
SFO - BFS • 2 stops
Start a new search
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

Mon, May 18 - Mon, May 25
Multiple Airlines Logo
12:55 pm - 11:20 pm
SFO
-
BFS
26h 25m
2 stops
Multiple Airlines Logo
7:00 am - 2:35 pm
BFS
-
SFO
39h 35m
3 stops
$1,073Multiple Airlines
Sat, May 16 - Mon, May 25
Multiple Airlines Logo
5:40 pm - 9:30 pm
SFO
-
BFS
19h 50m
2 stops
Multiple Airlines Logo
5:50 am - 2:35 pm
BFS
-
SFO
40h 45m
3 stops
$1,143Multiple Airlines
Sat, May 16 - Mon, May 25
Multiple Airlines Logo
5:40 pm - 4:35 pm
SFO
-
BFS
14h 55m
2 stops
Multiple Airlines Logo
7:00 am - 2:35 pm
BFS
-
SFO
39h 35m
3 stops
$1,149Multiple Airlines
Sat, May 16 - Mon, May 25
Multiple Airlines Logo
7:35 pm - 10:40 pm
SFO
-
BFS
19h 05m
2 stops
Multiple Airlines Logo
8:40 am - 2:35 pm
BFS
-
SFO
37h 55m
3 stops
$1,170Multiple Airlines
Sat, May 16 - Mon, May 25
Multiple Airlines Logo
6:00 am - 5:10 pm
SFO
-
BFS
27h 10m
3 stops
Multiple Airlines Logo
5:50 am - 2:35 pm
BFS
-
SFO
40h 45m
3 stops
$1,174Multiple Airlines
Tue, May 12 - Tue, May 19
Multiple Airlines Logo
8:30 am - 4:20 pm
SFO
-
BFS
23h 50m
2 stops
Multiple Airlines Logo
7:00 am - 9:55 pm
BFS
-
SFO
22h 55m
3 stops
$1,179Multiple Airlines
Tue, May 19 - Mon, Jul 6
Multiple Airlines Logo
8:05 am - 1:30 pm
SFO
-
BFS
21h 25m
3 stops
Multiple Airlines Logo
9:55 pm - 11:07 pm
BFS
-
SFO
33h 12m
3 stops
$1,247Multiple Airlines
Tue, May 19 - Mon, Jul 6
Multiple Airlines Logo
8:05 am - 9:20 pm
SFO
-
BFS
29h 15m
3 stops
Multiple Airlines Logo
8:35 pm - 3:27 pm
BFS
-
SFO
26h 52m
2 stops
$1,253Multiple Airlines
Tue, May 19 - Mon, Jul 6
Multiple Airlines Logo
8:30 am - 7:50 pm
SFO
-
BFS
27h 20m
2 stops
Multiple Airlines Logo
8:35 pm - 3:27 pm
BFS
-
SFO
26h 52m
2 stops
$1,280Multiple Airlines
Sat, May 16 - Mon, May 25
Multiple Airlines Logo
6:00 am - 5:10 pm
SFO
-
BFS
27h 10m
3 stops
Multiple Airlines Logo
8:40 am - 2:35 pm
BFS
-
SFO
37h 55m
3 stops
$1,287Multiple Airlines
Useful Info

Good to know

Low seasonFebruary
Cheapest flight$392
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly and prices are also 15% lower on average.
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 3 days, the lowest price for a flight from San Francisco to Belfast Intl Airport was $392 for a one-way ticket and $1,073 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 7885 reviews
6.8Comfort
6.9Boarding
6.4Food
6.4Entertainment
7.7Crew
Airline reviews

Check-in in SAN was long. ORD was good. Flight delayed On board crew was ok. No warmth or personality. LHrR barely made connection

6.0 GoodAnonymous, Apr 2026
SAN - ORD
Read more British Airways reviews

Check-in in SAN was long. ORD was good. Flight delayed On board crew was ok. No warmth or personality. LHrR barely made connection

Wish the food and overall service was better. They treat Business class passengers same as economy

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

Awful it always is unfortunately is the only way to fly direct to london

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

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.

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

Information on your arrival and departure airports

San Francisco (SFO)
Belfast Intl (BFS)