£446 Find Cheap Flights from Belfast to San Francisco Bay Area

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast to San Francisco Bay Area departing on 8/7. 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 San Francisco Bay Area

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

Book Cheap Belfast to San Francisco Bay Area Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Belfast to San Francisco Bay Area 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 return flight deals from Belfast to San Francisco Bay Area

Fri, 4 Sep - Sat, 19 Sep
British Airways Logo
06:30 - 18:00
BHD
-
SFO
19h 30m
2 stops
British Airways Logo
13:29 - 15:05
SFO
-
BHD
17h 36m
2 stops
£568British Airways
Fri, 4 Sep - Sat, 19 Sep
British Airways Logo
06:30 - 18:00
BHD
-
SFO
19h 30m
2 stops
British Airways Logo
19:30 - 18:15
SFO
-
BHD
14h 45m
1 stop
£570British Airways
Fri, 4 Sep - Sat, 19 Sep
British Airways Logo
06:30 - 13:50
BHD
-
SFO
15h 20m
1 stop
British Airways Logo
16:35 - 18:15
SFO
-
BHD
17h 40m
1 stop
£585British Airways
Fri, 4 Sep - Sat, 19 Sep
British Airways Logo
06:30 - 13:50
BHD
-
SFO
15h 20m
1 stop
British Airways Logo
16:35 - 18:15
SFO
-
BHD
17h 40m
1 stop
£591British Airways
Wed, 8 Jul - Wed, 15 Jul
KLM Logo
17:30 - 11:45
BHD
-
SFO
26h 15m
1 stop
KLM Logo
17:07 - 16:55
SFO
-
BHD
15h 48m
2 stops
£593KLM
Wed, 2 Sep - Sun, 6 Sep
British Airways Logo
20:35 - 13:50
BHD
-
SFO
25h 15m
1 stop
British Airways Logo
19:30 - 17:40
SFO
-
BHD
14h 10m
1 stop
£595British Airways
Thu, 3 Sep - Sat, 19 Sep
American Airlines Logo
06:30 - 18:00
BHD
-
SFO
19h 30m
2 stops
American Airlines Logo
16:35 - 18:15
SFO
-
BHD
17h 40m
1 stop
£596American Airlines
Tue, 7 Jul - Tue, 14 Jul
KLM Logo
17:30 - 20:06
BHD
-
SFO
34h 36m
2 stops
KLM Logo
07:00 - 09:20
SFO
-
BHD
18h 20m
2 stops
£608KLM
Fri, 4 Sep - Sat, 19 Sep
Multiple Airlines Logo
06:05 - 16:15
BFS
-
SFO
18h 10m
2 stops
Multiple Airlines Logo
19:35 - 22:40
SFO
-
BFS
19h 05m
2 stops
£665Multiple Airlines
Thu, 9 Jul - Thu, 16 Jul
Multiple Airlines Logo
08:20 - 22:57
BFS
-
SFO
22h 37m
2 stops
Multiple Airlines Logo
08:15 - 21:45
SFO
-
BFS
29h 30m
2 stops
£682Multiple Airlines
Booking Insights

KAYAK's insights & trends for Belfast to San Francisco Bay Area flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Belfast to San Francisco Bay Area, 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 Belfast to San Francisco Bay Area is January, when tickets cost £0 (return) on average. On the other hand, the most expensive months are March and February, when the average cost of return tickets is £1,265 and £887 respectively.

Good to know - Cheap tickets from Belfast to San Francisco Bay Area

Cheapest flight£446
Flight from Belfast Intl Airport to San Francisco

FAQs - booking San Francisco Bay Area flights

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

    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 Belfast to San Francisco Bay Area.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Belfast to San Francisco Bay Area is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Belfast to San Francisco Bay Area?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Belfast to San Francisco Bay Area with an airline and back with another airline.

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

    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 from Belfast to San Francisco Bay Area 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 Belfast to San Francisco Bay Area

 
See real verified KAYAK customer reviews for airlines flying from Belfast to San Francisco Bay Area. 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 Belfast to San Francisco Bay Area? 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 8047 reviews
6.9Boarding
7.7Crew
6.8Comfort
6.4Food
6.4Entertainment
Airline reviews

Seats not as comfortable as I had hoped. Food was very nice, service was fine. Entertainment options very nice. Had thought the premium economy was a more plus 2-3-2 layout but it was a 2-4-2 with seats not as wide as I had expected.

8.0 ExcellentEric, Jun 2026
LHR - LAS
Read more British Airways reviews

Seats not as comfortable as I had hoped. Food was very nice, service was fine. Entertainment options very nice. Had thought the premium economy was a more plus 2-3-2 layout but it was a 2-4-2 with seats not as wide as I had expected.

I flew four flights on British Airways within two weeks. I was unable to download the boarding pass to my phone for any of the four flights. I could check-in for my flight but the system would not give me boarding pass. I tried multiple ways and multiple times. I discovered many other passengers also had the same issue with their boarding passes. No explanation or acknowledgement by BA.

Lovely big plane. Excellent take off and landing. Cabin crew were so nice. Flight in time no delays

Because our ABZ-LHR flight was cancelled by BA for reasons they refuse to tell us--not weather--we did not make this flight and were booked on the following day. BA offered no assistance to us on the phone or in the airport, and we had to find a hotel at Heathrow on our own.

Horrible - flight was delayed by 6 hours - we boarded, were made to de-board due some technical fault; aircraft changed; special meals request on new flight - all went awry. Landed in Dulles airport; breezed thru immigration; as Business Class passengers or baggage was delivered almost 90 minutes after landing; air tags indicated the bags were just near the carousel but the unhelpful BA staff - Maria and Ghina refused to give any update - palming it off on some imaginary invisible “manager” despite air tags evidence showing it right there. So about 50-60 passengers waiting and getting infuriatingly impatient for their bags coz one container was not delivered. Finally after much argument by some other passengers Maria condescended to go to the “ramp” and within 5 minutes the baggage was delivered miraculously. Question is why couldn’t she have done it one hour earlier ? Poor poor experience once again on Business Class BA.

Cheap Flight Fares would not provide booking info. I canceled the reservation and we arbitrated with American Express. They provided erroneous info to Amex and it was determined that C.F.F. deserved the price of the ticket. Worse experience I've ever had.

Seating space is appalling. Seats and all surrounding area in "Economy" is built for individuals shorter than 4' 10" and below 120 lbs. Ridiculous. While I'm not expecting fine dining, the food was the worst airplane food that I can recall.

Business class lounge for my gate was closed and no email was sent, causing me to walk back and forth to different gates, etc for over 20 minutes one way. Flight entertainment was mediocre with very poor choices especially for business class cabin. Original flight was cancelled and rebooking was difficult and no reason given for cancellation.

Very comfortable flight and simple and directed one way and back. Amazing price.

We loved our flight attendant, Emma from Scotland, the meal and entertainment offerings were wonderful, the flight was smooth, and enough leg room to stretch. We would fly with you again!

Everything you need to know for your flight to San Francisco Bay Area

Cabin class types available on flights to Belfast

Cabin classes available on flights to Belfast. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.