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>

£339 CHEAP FLIGHTS from Northern Ireland to San Francisco

SFO

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Cheap Flights from Northern Ireland to San Francisco

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent return flight deals from Northern Ireland to San Francisco

Thu, 3 Sep - Sat, 26 Sep

06:30 - 13:50

BHD

SFO

15h 20m

1 stop

16:35 - 18:15

SFO

BHD

17h 40m

1 stop

£699British Airways

Thu, 3 Sep - Sat, 26 Sep

06:30 - 18:00

BHD

SFO

19h 30m

2 stops

19:30 - 18:15

SFO

BHD

14h 45m

1 stop

£704British Airways

Wed, 2 Sep - Sat, 26 Sep

09:50 - 21:02

BHD

SFO

19h 12m

2 stops

14:00 - 16:55

SFO

BHD

18h 55m

2 stops

£710KLM

Tue, 1 Sep - Sat, 26 Sep

06:30 - 13:50

BHD

SFO

15h 20m

1 stop

09:02 - 12:25

SFO

BHD

19h 23m

2 stops

£719American Airlines

Thu, 3 Sep - Sat, 26 Sep

09:50 - 21:02

BHD

SFO

19h 12m

2 stops

14:20 - 16:55

SFO

BHD

18h 35m

2 stops

£722KLM

Tue, 1 Sep - Sat, 26 Sep

09:40 - 22:18

BHD

SFO

20h 38m

2 stops

09:02 - 12:25

SFO

BHD

19h 23m

2 stops

£724American Airlines

Fri, 4 Sep - Sat, 26 Sep

09:50 - 11:45

BHD

SFO

33h 55m

1 stop

14:20 - 16:55

SFO

BHD

18h 35m

2 stops

£736KLM

Fri, 4 Sep - Sat, 26 Sep

09:50 - 21:02

BHD

SFO

19h 12m

2 stops

14:00 - 16:55

SFO

BHD

18h 55m

2 stops

£740KLM

Sun, 12 Jul - Sun, 19 Jul

21:25 - 10:20

BFS

SFO

44h 55m

3 stops

11:40 - 18:25

SFO

BFS

22h 45m

2 stops

£841Multiple Airlines

Sun, 12 Jul - Sun, 19 Jul

21:25 - 10:20

BFS

SFO

44h 55m

3 stops

06:00 - 18:25

SFO

BFS

28h 25m

3 stops

£854Multiple Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	£339

Best time to beat the crowds (6% less expensive on average)

Most popular time to fly (18% more expensive on average)

Flight from Belfast Intl 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

Burlingame

Fremont

Big Sur

Berkeley

Pacific Grove

South San Francisco

Roseville

San Mateo

Watsonville

Mill Valley

Calistoga

Davis

Seaside

Sonoma

Newark

Mountain View

Sausalito

Sunnyvale

Everything you need to know for your flight to San Francisco

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

San Francisco (SFO)

SFO

£339 Find Cheap Flights from Northern Ireland to San Francisco

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

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

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

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Flights from domestic origins to San Francisco

Choose which airport to fly into in San Francisco

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