How does KAYAK find such low prices on flights from Northern Ireland 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 Northern Ireland to San Francisco. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Northern Ireland to San Francisco?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Northern Ireland is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Northern Ireland 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 Northern Ireland with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Northern Ireland 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 Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

£404 CHEAP FLIGHTS from Northern Ireland to San Francisco

SFO

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

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Cheapest return fare

£470

Multiple Airlines

Tue 24/2Tue 3/3

BFS - SFO • 2 stops

Cheapest one-way flight

£404

American Airlines

Mon 16/3

BHD - SFO • 1 stop

Start a new search

KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you love your trip to San Francisco!

Flight Deals

Cheap Flights from Northern Ireland to San Francisco

Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Northern Ireland 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.

Round-trip

One-way

Last minute

Recent return flight deals from Northern Ireland to San Francisco

Tue, 24 Feb - Tue, 3 Mar

14:15 - 16:30

BFS

SFO

34h 15m2 stops

19:25 - 21:50

SFO

BFS

18h 25m2 stops

£470Multiple Airlines

Mon, 23 Feb - Mon, 2 Mar

14:15 - 16:30

BFS

SFO

34h 15m2 stops

19:25 - 21:10

SFO

BFS

17h 45m2 stops

£494Multiple Airlines

Fri, 23 Jan - Wed, 11 Feb

17:20 - 11:50

BHD

SFO

26h 30m1 stop

13:55 - 16:50

SFO

BHD

18h 55m1 stop

£495KLM

Tue, 24 Feb - Tue, 3 Mar

05:45 - 14:30

BFS

SFO

40h 45m3 stops

15:40 - 22:35

SFO

BFS

22h 55m2 stops

£496Multiple Airlines

Fri, 23 Jan - Wed, 11 Feb

06:45 - 18:30

BHD

SFO

19h 45m2 stops

15:50 - 16:35

SFO

BHD

16h 45m2 stops

£504British Airways

Sun, 8 Feb - Mon, 16 Feb

05:45 - 14:35

BFS

SFO

40h 50m3 stops

15:40 - 22:35

SFO

BFS

22h 55m2 stops

£506Multiple Airlines

Fri, 13 Mar - Mon, 16 Mar

19:35 - 16:00

BHD

SFO

27h 25m1 stop

06:00 - 14:15

SFO

BHD

25h 15m2 stops

£509British Airways

Fri, 13 Mar - Mon, 16 Mar

14:50 - 16:00

BHD

SFO

32h 10m1 stop

15:13 - 14:15

SFO

BHD

16h 02m2 stops

£510British Airways

Sat, 14 Feb - Wed, 4 Nov

17:20 - 11:50

BHD

SFO

26h 30m1 stop

13:50 - 21:00

SFO

BHD

23h 10m1 stop

£512Virgin Atlantic

Fri, 23 Jan - Wed, 11 Feb

17:20 - 11:50

BHD

SFO

26h 30m1 stop

11:02 - 16:50

SFO

BHD

21h 48m2 stops

£513KLM

Useful Info

Low season	January
High season	July
Cheapest flight	£404

Best time to beat the crowds (5% less expensive on average)

Most popular time to fly (23% more expensive on average)

Flight from Belfast City Airport to San Francisco

How does KAYAK find such low prices on flights from Northern Ireland 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 Northern Ireland to San Francisco.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Northern Ireland to San Francisco?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Northern Ireland is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Northern Ireland 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 Northern Ireland with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Northern Ireland 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 Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Carmel-by-the-Sea

Palo Alto

Berkeley

Burlingame

Fremont

Big Sur

Hayward

Millbrae

Mountain View

Carmel Valley

Pacific Grove

Sunnyvale

South San Francisco

Sausalito

Redwood City

Calistoga

Davis

Sonoma

San Bruno

Scotts Valley

Everything you need to know for your flight to San Francisco

Airports

Cabin class

Complete your trip

Direct flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in San Francisco

San Francisco (SFO)

SFO

£404 Find Cheap Flights from Northern Ireland to San Francisco

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

Everything you should know

Cheap Flights from Northern Ireland to San Francisco

Recent return flight deals from Northern Ireland to San Francisco

Recent one-way flight deals from Northern Ireland to San Francisco

Recent last minute flight deals from Northern Ireland to San Francisco

Good to know - Cheap tickets from Northern Ireland to San Francisco

FAQs for booking flights from Northern Ireland to San Francisco

How does KAYAK find such low prices on flights from Northern Ireland 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 Northern Ireland to San Francisco.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Northern Ireland to San Francisco?

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

What is the Hacker Fare option on flights from Northern Ireland 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 Northern Ireland with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Northern Ireland 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 Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Travelling to a place near San Francisco?

Everything you need to know for your flight to San Francisco

Information on the airport you'll fly into in San Francisco

Cabin class types available on flights to Northern Ireland

Complete your trip to San Francisco with a hotel stay or car hire

Find direct flights for San Francisco

Flights to other popular destinations

Flights from domestic origins to San Francisco

Choose which airport to fly into in San Francisco

Find deals for your return flight