£863 Find Cheap Flights from Belfast Intl Airport to San Francisco Bay Area

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast Intl to San Francisco Bay Area departing on 20/7. 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 Intl 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 Intl 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 Intl to San Francisco Bay Area

Mon, 20 Jul - Fri, 24 Jul
Multiple Airlines Logo
07:00 - 16:40
BFS
-
SFO
41h 40m
3 stops
Multiple Airlines Logo
08:10 - 21:15
SFO
-
BFS
29h 05m
3 stops
£863Multiple Airlines
Mon, 22 Jun - Mon, 29 Jun
Multiple Airlines Logo
08:15 - 10:50
BFS
-
SFO
34h 35m
2 stops
Multiple Airlines Logo
12:55 - 23:20
SFO
-
BFS
26h 25m
2 stops
£865Multiple Airlines
Mon, 20 Jul - Fri, 24 Jul
Multiple Airlines Logo
07:00 - 16:40
BFS
-
SFO
41h 40m
3 stops
Multiple Airlines Logo
13:45 - 21:15
SFO
-
BFS
23h 30m
2 stops
£866Multiple Airlines
Mon, 22 Jun - Mon, 29 Jun
Multiple Airlines Logo
08:00 - 21:55
BFS
-
SFO
45h 55m
3 stops
Multiple Airlines Logo
08:30 - 12:30
SFO
-
BFS
20h 00m
2 stops
£898Multiple Airlines
Mon, 20 Jul - Fri, 24 Jul
Multiple Airlines Logo
06:30 - 21:02
BFS
-
SFO
22h 32m
2 stops
Multiple Airlines Logo
08:30 - 21:50
SFO
-
BFS
29h 20m
2 stops
£1,061Multiple Airlines
Mon, 22 Jun - Mon, 29 Jun
Multiple Airlines Logo
20:35 - 11:45
BFS
-
SFO
23h 10m
2 stops
Multiple Airlines Logo
15:05 - 17:50
SFO
-
BFS
18h 45m
1 stop
£1,066Multiple Airlines
Booking Insights

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

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

Can I save money by flying with a stopover from Belfast Intl Airport to San Francisco Bay Area?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £203 on average.

What is the cheapest month to fly from Belfast Intl Airport 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 Intl Airport 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 Intl Airport 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.

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

Low seasonAugust
Cheapest flight£863
Best time to beat the crowds (28% less expensive on average)
Most popular time to fly and prices are also 28% lower on average.
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 Intl Airport 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 Intl Airport 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 Intl Airport to San Francisco Bay Area?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Belfast Intl Airport 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 Intl Airport 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 Intl Airport 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 Intl Airport 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 Intl Airport 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 Intl 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 Intl 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 7991 reviews
7.7Crew
6.4Food
6.8Comfort
6.4Entertainment
6.9Boarding
Airline reviews

Los Angeles to London. 25th of April 2026. Business class. I was flying backwards with a complete stranger snoring next to me. In Business class. Males and females, strangers lying next to each other. Seats were backwards. I paid for comfort. I got dizziness and stress.

4.0 OkayAnonymous, May 2026
LHR - LAX
Read more British Airways reviews

Los Angeles to London. 25th of April 2026. Business class. I was flying backwards with a complete stranger snoring next to me. In Business class. Males and females, strangers lying next to each other. Seats were backwards. I paid for comfort. I got dizziness and stress.

Long line with check in at the DIA British Airway counter.

The flights were on time. Cabin crew were nice. The food was terrible! Checking in was not easy using my phone.

Crew were fantastic and the aircraft was extremely comfortable, but outdated. Headphone jacks were worn out and sound normally only came out of one ear unless positioned just right.

A shout-out to the flight attendent, Lauren, who was the main person assisting me. She was amazing - perfect balance of bright, cheerful, engaging, yet formal

OK, except for a cabin attendant's lack of attention.

efficient. on time. cabin crew were very professional and very nice to deal with. would definately fly BA again.

It was great overall. A few slight improvements could be made on the onboarding process at the Gates with announcements and clarity of communications (both at the gate and in flight). The movies in the entertainment options could be improved for bollywood, hollywood.

I alrady responded to this request, and expllaned at length that this was the worst flying experience in my 77 years. I will NEVER fly BA again.

Airbus A350 is poorly designed for wheelchair users and reduced mobility passengers. The angle of the pods makes it awkward to transfer. I was able to but I have ab stability. It could be a real challenge for people with more severe mobility impairments. You'd think Airbus would have come up with a solution for this or thought more about us disabled folks more when designing this aircraft.

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

Information on your arrival and departure airports

Belfast Intl Airport (BFS)