BFS - SFO

£502 Find Cheap Flights from Belfast Intl Airport to San Francisco

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 departing on 23/2. 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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to San Francisco, 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, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
£502
Multiple Airlines
Mon 23/2Mon 2/3
BFS - SFO • 2 stops
Cheapest one-way flight
Multiple Airlines
Tue 27/1
BFS - SFO • multi-stop
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Booking Insights
Flight Deals

Cheap Flights from Belfast Intl to San Francisco (BFS-SFO)

 
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 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

Mon, 23 Feb - Mon, 2 Mar
Multiple Airlines Logo
14:15 - 16:30
BFS
-
SFO
34h 15m
2 stops
Multiple Airlines Logo
19:25 - 21:10
SFO
-
BFS
17h 45m
2 stops
£502Multiple Airlines
Thu, 12 Mar - Thu, 19 Mar
Multiple Airlines Logo
14:25 - 17:30
BFS
-
SFO
34h 05m
2 stops
Multiple Airlines Logo
20:25 - 22:20
SFO
-
BFS
18h 55m
2 stops
£606Multiple Airlines
Thu, 12 Mar - Thu, 19 Mar
Multiple Airlines Logo
18:35 - 17:05
BFS
-
SFO
29h 30m
3 stops
Multiple Airlines Logo
17:40 - 22:20
SFO
-
BFS
21h 40m
2 stops
£724Multiple Airlines
Thu, 12 Mar - Thu, 19 Mar
Multiple Airlines Logo
18:35 - 17:05
BFS
-
SFO
29h 30m
3 stops
Multiple Airlines Logo
08:25 - 21:05
SFO
-
BFS
29h 40m
3 stops
£774Multiple Airlines
Mon, 23 Feb - Mon, 2 Mar
Multiple Airlines Logo
20:55 - 19:35
BFS
-
SFO
30h 40m
3 stops
Multiple Airlines Logo
19:25 - 21:10
SFO
-
BFS
17h 45m
2 stops
£859Multiple Airlines
Sat, 20 Jun - Sun, 21 Jun
Multiple Airlines Logo
06:20 - 16:15
BFS
-
SFO
17h 55m
2 stops
Multiple Airlines Logo
17:35 - 21:30
SFO
-
BFS
19h 55m
2 stops
£889Multiple Airlines
Sat, 20 Jun - Sun, 21 Jun
Multiple Airlines Logo
06:55 - 13:50
BFS
-
SFO
38h 55m
3 stops
Multiple Airlines Logo
17:35 - 21:30
SFO
-
BFS
19h 55m
2 stops
£895Multiple Airlines
Fri, 13 Mar - Thu, 19 Mar
Multiple Airlines Logo
14:20 - 17:30
BFS
-
SFO
34h 10m
2 stops
Multiple Airlines Logo
15:40 - 22:00
SFO
-
BFS
23h 20m
2 stops
£930Multiple Airlines
Fri, 13 Mar - Thu, 19 Mar
Multiple Airlines Logo
13:25 - 17:30
BFS
-
SFO
35h 05m
2 stops
Multiple Airlines Logo
08:30 - 19:30
SFO
-
BFS
28h 00m
3 stops
£1,052Multiple Airlines
Fri, 13 Mar - Thu, 19 Mar
Multiple Airlines Logo
13:25 - 17:30
BFS
-
SFO
35h 05m
2 stops
Multiple Airlines Logo
14:55 - 13:40
SFO
-
BFS
15h 45m
1 stop
£1,268Multiple Airlines
Booking Insights

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

Cheapest flight£502
Most popular time to fly and prices are also 9% lower on average.
Flight from Belfast Intl Airport to San Francisco

When to book flights from Belfast Intl to San Francisco

Are your dates flexible? Find out the best times to travel from Belfast Intl to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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 Belfast Intl Airport to San Francisco flights

  • What is the cheapest flight from Belfast Intl Airport to San Francisco?

    In the last 3 days, the lowest price for a flight from Belfast Intl Airport to San Francisco was £502 for a return ticket.

  • Which aircraft models fly most regularly from Belfast Intl Airport to San Francisco?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Belfast Intl Airport to San Francisco?

    oneworld is the only airline alliance operating flights between Belfast Intl Airport and San Francisco.

  • Which is the best airline for flights from Belfast to San Francisco, American Airlines or British Airways?

    The two airlines most popular with KAYAK users for flights from Belfast to San Francisco are American Airlines and British Airways. With an average price for the route of £514 and an overall rating of 7.2, American Airlines is the most popular choice. British Airways is also a great choice for the route, with an average price of £510 and an overall rating of 6.7.

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

    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.

  • 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?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Belfast Intl Airport 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?

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

    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 San Francisco from Belfast Intl Airport 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

 
See real verified KAYAK customer reviews for airlines flying from Belfast to San Francisco. 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? 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 11198 reviews
6.9Entertainment
8.0Crew
6.4Food
7.2Comfort
7.5Boarding
Airline reviews

We were upgraded to Business Class. So comfortable with great service and food options

10.0 ExcellentRobert, Jan 2026
AKL - LAX
Read more American Airlines reviews

We were upgraded to Business Class. So comfortable with great service and food options

The flight was completely full. Crew was not happy. Everyone was rude and brusque. Travelling with an arm in a cast and seating in the first row of economy cabin (in front of the separation) I needed help retrieving my tray for the meal. A staff member literally threw the tray on my lap, without helping to take out the tray. Boarding was messy, with 300 people waiting in an encloses space with low ceiling. I will try to avoid AA next time I have a long flight.

The comfort of Business Class made this trip far more comfortable. I was indeed surprised when I asked one of the flight attendant to help me set up my "bed", she responded that "We don't make beds in Business Class any longer...only First Class" I believe her name was Giselle, but I'm not certain. She did instruct me how to adjust the seat, place the hooded cover and I clearly understood how to place the blanket and the cover. Additionally, the meal I was served (a beef dish) was almost inedible. The beef was tough and odd tasting. I didn't mention it as I was hoping to quickly settle down and try to get some sleep.

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

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 from Belfast Intl to San Francisco

Information on your arrival and departure airports