£477 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 4/3. 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

Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
14:15 - 16:30
BFS
-
SFO
34h 15m
2 stops
Multiple Airlines Logo
20:25 - 22:20
SFO
-
BFS
18h 55m
2 stops
£477Multiple Airlines
Sun, 15 Feb - Sun, 22 Feb
Multiple Airlines Logo
05:45 - 14:35
BFS
-
SFO
40h 50m
3 stops
Multiple Airlines Logo
18:20 - 18:55
SFO
-
BFS
16h 35m
2 stops
£563Multiple Airlines
Sun, 15 Feb - Sun, 22 Feb
Multiple Airlines Logo
06:30 - 20:10
BFS
-
SFO
21h 40m
1 stop
Multiple Airlines Logo
18:20 - 18:55
SFO
-
BFS
16h 35m
2 stops
£563Multiple Airlines
Sun, 15 Feb - Sun, 22 Feb
Multiple Airlines Logo
05:45 - 14:35
BFS
-
SFO
40h 50m
3 stops
Multiple Airlines Logo
08:25 - 18:55
SFO
-
BFS
26h 30m
3 stops
£566Multiple Airlines
Sun, 15 Feb - Sun, 22 Feb
Multiple Airlines Logo
06:30 - 20:10
BFS
-
SFO
21h 40m
1 stop
Multiple Airlines Logo
08:25 - 18:55
SFO
-
BFS
26h 30m
3 stops
£569Multiple Airlines
Thu, 7 May - Thu, 21 May
Multiple Airlines Logo
09:00 - 16:50
BFS
-
SFO
39h 50m
3 stops
Multiple Airlines Logo
17:35 - 19:30
SFO
-
BFS
17h 55m
2 stops
£670Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
10:10 - 10:39
BFS
-
SFO
32h 29m
3 stops
Multiple Airlines Logo
18:20 - 16:10
SFO
-
BFS
14h 50m
2 stops
£675Multiple Airlines
Thu, 7 May - Thu, 21 May
Multiple Airlines Logo
09:00 - 16:50
BFS
-
SFO
39h 50m
3 stops
Multiple Airlines Logo
17:35 - 19:30
SFO
-
BFS
17h 55m
2 stops
£690Multiple Airlines
Sun, 15 Feb - Sun, 22 Feb
Multiple Airlines Logo
06:30 - 20:10
BFS
-
SFO
21h 40m
1 stop
Multiple Airlines Logo
16:30 - 18:15
SFO
-
BFS
17h 45m
1 stop
£761Multiple Airlines
Thu, 7 May - Thu, 21 May
Multiple Airlines Logo
09:00 - 16:50
BFS
-
SFO
39h 50m
3 stops
Multiple Airlines Logo
16:45 - 23:00
SFO
-
BFS
22h 15m
3 stops
£770Multiple 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.

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

Cheapest flight£477
Most popular time to fly and prices are also 9% 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 airlines 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.
7.2
American AirlinesOverall score based on 11157 reviews
6.9Entertainment
6.4Food
7.2Comfort
7.5Boarding
8.0Crew
Airline reviews

Amazing I love American. I’ll never fly anyone else if I can help it.

10.0 ExcellentRichard, Jan 2026
PHX - ONT
Read more American Airlines reviews

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

We were told the flight was delayed 5 times, then it was moved to the next day.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

Loved the crew . Absolutely no complaints. Except for luggage lost

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

We are too tired and frustrated to comment politely at this point

The business class seats are dated and uncomfortable. The space is bare minimum and there is absolutely no privacy. For $4K, this is not what I expect.

The flight crew was rude. We were in first class and no one even offered water until an hour after we were in the air. Horrible experience

My touch screen at my seat wasn't working, the films BA advertised on the website for this flight were not available, and the plane was a little dated, food was good and the staff were good, just let down by the aircraft facilities.

Did not like the seating configuration at all with 2+3+2 in business class. Lacking total privacy and comfort

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Entertainment devices on A380 need to be fixed, the seats might do with updates.

Everything. Employees offered to help me because I had to use a cane.

Check-in and boarding were great. On flight staff were rude and disrespectful. Paid for extra room and found it incredibly cramped. Bathrooms kept in poor condition. Overall negative experience.

Great seat in premium economy, great food and drinks throughout lots of in flight entertainment. 1 hour 40 min delayed flying out , 2 1/2 hour wait at passport control in tampa

My seat cushion was poor. The cushion was compressed and was uncomfortable for such a long flight.

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

Information on your arrival and departure airports