$640 Find Cheap Flights from San Francisco to Belfast

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Belfast departing on 3/24. 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

Tue, Mar 24 - Tue, Mar 31
British Airways Logo
6:30 pm - 4:45 pmSFO-BHD
15h 15m1 stop
British Airways Logo
6:35 am - 1:50 pmBHD-SFO
15h 15m1 stop
$640British Airways
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Tue, Mar 24 - Tue, Mar 31
Multiple Airlines Logo
10:24 am - 10:30 amSFO-BHD
17h 06m2 stops
Multiple Airlines Logo
6:35 am - 1:50 pmBHD-SFO
15h 15m1 stop
$650Multiple Airlines
Find Deal
Tue, Mar 24 - Tue, Mar 31
American Airlines Logo
10:24 am - 11:30 amSFO-BHD
18h 06m2 stops
American Airlines Logo
1:40 pm - 12:04 amBHD-SFO
18h 24m2 stops
$659American Airlines
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Wed, Dec 3 - Sun, Dec 7
Delta Logo
1:55 pm - 9:00 pmSFO-BHD
23h 05m1 stop
Delta Logo
5:20 pm - 11:50 amBHD-SFO
26h 30m1 stop
$685Delta
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Wed, Dec 3 - Sun, Dec 7
Delta Logo
1:55 pm - 4:50 pmSFO-BHD
18h 55m1 stop
Delta Logo
6:30 am - 11:50 amBHD-SFO
13h 20m1 stop
$687Delta
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Wed, Dec 3 - Sun, Dec 7
Virgin Atlantic Logo
10:30 am - 4:50 pmSFO-BHD
22h 20m2 stops
Virgin Atlantic Logo
5:20 pm - 11:50 amBHD-SFO
26h 30m1 stop
$690Virgin Atlantic
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Wed, Dec 3 - Sun, Dec 7
Virgin Atlantic Logo
8:50 am - 9:00 pmSFO-BHD
28h 10m2 stops
Virgin Atlantic Logo
6:30 am - 11:50 amBHD-SFO
13h 20m1 stop
$691Virgin Atlantic
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Sat, Nov 15 - Sun, Nov 23
KLM Logo
1:55 pm - 9:00 pmSFO-BHD
23h 05m1 stop
KLM Logo
6:30 am - 11:50 amBHD-SFO
13h 20m1 stop
$716KLM
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Thu, Mar 5 - Sun, Mar 8
American Airlines Logo
7:32 am - 10:20 amSFO-BHD
18h 48m2 stops
American Airlines Logo
10:40 am - 11:20 pmBHD-SFO
19h 40m2 stops
$719American Airlines
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Wed, Nov 19 - Sun, Nov 23
KLM Logo
1:55 pm - 9:00 pmSFO-BHD
23h 05m1 stop
KLM Logo
5:20 pm - 11:50 amBHD-SFO
26h 30m1 stop
$1,056KLM
Find Deal

Everything you should know

Top airlines
British Airways
Cheapest • from $640 (round-trip)
British Airways
Best reviews • 6.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$640
Overall average: $644
British Airways
Tue 3/24Tue 3/31
SFO - BHD • 1 stop
Cheapest one-way
Multiple Airlines
Mon 10/20
SFO - BF1 • multi-stop
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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.

How much is a round-trip flight from San Francisco to Belfast?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Francisco to Belfast departing in March.

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 April, where tickets cost $622 (return) on average. On the other hand, the most expensive months are January and June, where the average cost of round-trip tickets is $1,339 and $1,150 respectively.

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Good to know

Cheapest flight$640
Flight from San Francisco to Belfast City 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 $640 for a round-trip ticket.

  • 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 is the only airline alliance operating flights between San Francisco and Belfast.

  • 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 airline 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.
6.7
British AirwaysOverall score based on 7461 reviews
6.7Comfort
6.9Boarding
6.4Entertainment
7.6Crew
6.3Food
Airline reviews

The flat beds. Other than that, the place was not clean.

6.0 GoodSunita, Oct 2025PDX - LHR
Read more British Airways reviews

The flat beds. Other than that, the place was not clean.

Moved me away from my family and refused to fix it.

I have always been pleased with their service. Would not change a thing

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

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

Great crew and food and beverage. Seating tight but not the airline's fault. Will definitely fly BA in future!

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

Information on your arrival and departure airports

San Francisco (SFO)

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