£655 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 24/4. 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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Cheap Flights from Belfast Intl to San Francisco Bay Area

Cheapest return prices found by our users on KAYAK in the last 72 hours
San Francisco
San Francisco2 stops£655
San Jose
San Jose3 stops£2,182
San Francisco
San Francisco2 stops£655
San Jose
San Jose3 stops£2,182

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

Fri, 24 Apr - Tue, 28 Apr
Multiple Airlines Logo
06:05 - 22:49
BFS
-
SFO
24h 44m
2 stops
Multiple Airlines Logo
06:00 - 14:35
SFO
-
BFS
24h 35m
2 stops
£655Multiple Airlines
Fri, 24 Apr - Tue, 28 Apr
Multiple Airlines Logo
06:05 - 21:20
BFS
-
SFO
23h 15m
1 stop
Multiple Airlines Logo
17:55 - 23:20
SFO
-
BFS
21h 25m
1 stop
£661Multiple Airlines
Tue, 5 May - Tue, 12 May
Multiple Airlines Logo
08:00 - 15:45
BFS
-
SFO
15h 45m
1 stop
Multiple Airlines Logo
23:15 - 23:10
SFO
-
BFS
15h 55m
1 stop
£677Multiple Airlines
Thu, 7 May - Thu, 14 May
Multiple Airlines Logo
20:05 - 11:45
BFS
-
SFO
23h 40m
2 stops
Multiple Airlines Logo
15:05 - 22:50
SFO
-
BFS
23h 45m
1 stop
£729Multiple Airlines
Thu, 7 May - Thu, 14 May
Multiple Airlines Logo
20:05 - 12:50
BFS
-
SFO
24h 45m
1 stop
Multiple Airlines Logo
15:05 - 22:50
SFO
-
BFS
23h 45m
1 stop
£739Multiple Airlines
Thu, 21 May - Thu, 28 May
Multiple Airlines Logo
12:45 - 14:40
BFS
-
SFO
33h 55m
2 stops
Multiple Airlines Logo
16:45 - 21:40
SFO
-
BFS
20h 55m
2 stops
£776Multiple Airlines
Thu, 21 May - Thu, 28 May
Multiple Airlines Logo
12:45 - 14:40
BFS
-
SFO
33h 55m
3 stops
Multiple Airlines Logo
16:45 - 21:40
SFO
-
BFS
20h 55m
2 stops
£786Multiple Airlines
Thu, 7 May - Thu, 14 May
Multiple Airlines Logo
15:35 - 14:40
BFS
-
SFO
31h 05m
2 stops
Multiple Airlines Logo
16:45 - 21:45
SFO
-
BFS
21h 00m
2 stops
£788Multiple Airlines
Thu, 7 May - Thu, 14 May
Multiple Airlines Logo
15:35 - 14:40
BFS
-
SFO
31h 05m
2 stops
Multiple Airlines Logo
16:45 - 21:45
SFO
-
BFS
21h 00m
3 stops
£792Multiple Airlines
Thu, 7 May - Thu, 14 May
Multiple Airlines Logo
16:15 - 14:40
BFS
-
SFO
30h 25m
2 stops
Multiple Airlines Logo
16:45 - 21:45
SFO
-
BFS
21h 00m
3 stops
£794Multiple 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 £202 on average.

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

Low seasonSeptember
Cheapest flight£655
Best time to beat the crowds (43% less expensive on average)
Most popular time to fly and prices are also 27% 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.
7.1
American AirlinesOverall score based on 11564 reviews
7.2Comfort
7.5Boarding
6.8Entertainment
7.9Crew
6.4Food
Airline reviews

Buying ticket from kayak instant booking was a huge mistake, never to be repeated again! The Kayak didn’t book the tickets directly, it handed it off to a third party Underpricer, that booked a code shared American Airlines flight operated by Cathay Pacific!! When managing the booking American Airlines would recognize the itinerary but wouldn’t let me do anything stating, the flight is operated by Cathay Pacific so go to their website. Cathay Pacific would recognize the itinerary, neither by reservation ID or ticket number…asking to reach out to the third party Underpricer….calling Underpricer resulted in no help like seat requests, mileage number or upgrade request, 15hr layover accommodation voucher guidance…so net in net avoid booking through three layers of intermediaries

6.0 GoodKaushalendra, Apr 2026
HKG - SFO
Read more American Airlines reviews

Buying ticket from kayak instant booking was a huge mistake, never to be repeated again! The Kayak didn’t book the tickets directly, it handed it off to a third party Underpricer, that booked a code shared American Airlines flight operated by Cathay Pacific!! When managing the booking American Airlines would recognize the itinerary but wouldn’t let me do anything stating, the flight is operated by Cathay Pacific so go to their website. Cathay Pacific would recognize the itinerary, neither by reservation ID or ticket number…asking to reach out to the third party Underpricer….calling Underpricer resulted in no help like seat requests, mileage number or upgrade request, 15hr layover accommodation voucher guidance…so net in net avoid booking through three layers of intermediaries

Going non stop to lax like I paid for. Not stopping in MCI for gas. Too long of delays

Flight was on time. Cabin attendants made no recognition of my name or being an Advantage Executive Platinum member.

Delayed for mechanical and no updates on what was happening and how long the delay might be.

A first class seat should fit a fat person, and this doesn't. The trays in the armrest are less functional than an ordinary tray in the back of the seat.

The experience at checkin for my American Airlines flight from Sacramento to LAX was very good including the assistance I received in getting my bags checked in and boarding passes printed. Was pleasantly surprised the my bags were checked through all the way to my destination at Clark International Airport in Angeles, Philippines.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

They are always late and seats was also not having working charger

did not have enough meal for first class passengers so offer us snack

Everything was spectacular except the boarding. It was just a mob of people while all groups were called over the public address system.

The Britts are wonderful to fly with and the crew were very hospitable. Again, I really wish they had been able to retrieve my carryon bag from baggage claim before the flight so I could be in a less worrisome state of mind, but that's not on them. I completely understand. The window seats with the dimmable windows were very cool!

There was a delay for the San Francisco-London flight, but we were all informed via text and email. The staff was very friendly and nice and the food was good. I do recommend that the airline offer something without eggs or something vegan for the vegetarian meal option. A lot of Indians are lacto-vegetarian, while some could be allergic to eggs/dairy.

food options were terrible. for a 10-hour flight, there should be 2 decent meals. Also, flight attendants should come around with drinks more than just at the meals.

Smooth flight. The seats were comfortable but the reclining mechanism didn't work very well. My wife's seat required the flight attendant to push the seat forward while she pushed the button. The leg support didn't want to return to its home under the seat. I ordered the diabetic meal which was full of carbs. It was low in sugar but carbs turn into sugar so was it really diabetic? Overall the flight was pleasant, long but pleasant.

Crew were nice, food was good. Boarding was horrendous. We were driven around the airport in a bus forced to climb a long flight of very steep stairs with no adequate handrails to board the plane . In many many years of flying to the US I have never been required to do this . There was no assistance for those needing help getting up the stairs to the plane. A fellow passenger helped me. No idea how other elderly, physically limited passengers or those with young children managed . It was a full flight with crowds trying to get up the stairs. It was an accident waiting to happen.

Horrible, the plane is just old and junky...Filthy restroom, seat was as hard as rock. The food, mystery side dish, inedible..geez..just Horrible. Never flying BA again

the service on Business class should be improved to be at par with industry leaders like Cathay Pacific and Singapore AIrlines. A lot of room for improvement.

Late takeoff, but on time landing. Lost bags, 3 days to find them, still in transit to my location. Power outlets broken, Wi-Fi not working, so much for working on the long flight.

Good. For a long flight. The comfort of the seat could be better. Also, the food was « normal » plane food. Not indian plane food unfortunately! Everything else was smooth and great.

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

Information on your arrival and departure airports