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 round-trip 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>

$456 CHEAP FLIGHTS from Northern Ireland to San Francisco

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

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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 round-trip flight deals from Northern Ireland to San Francisco

Wed, Sep 2 - Sun, Sep 6

6:30 am - 1:50 pm

BHD

SFO

15h 20m

1 stop

4:31 pm - 6:45 pm

SFO

BHD

18h 14m

2 stops

$907British Airways

Wed, Sep 2 - Sun, Sep 6

11:35 am - 11:45 pm

BHD

SFO

20h 10m

2 stops

4:31 pm - 6:45 pm

SFO

BHD

18h 14m

2 stops

$913British Airways

Thu, Sep 3 - Sat, Sep 26

6:30 am - 1:50 pm

BHD

SFO

15h 20m

1 stop

4:35 pm - 6:15 pm

SFO

BHD

17h 40m

1 stop

$941British Airways

Thu, Sep 3 - Sun, Sep 13

6:30 am - 1:50 pm

BHD

SFO

15h 20m

1 stop

7:30 pm - 8:35 pm

SFO

BHD

17h 05m

1 stop

$945British Airways

Thu, Sep 3 - Sat, Sep 26

6:30 am - 6:00 pm

BHD

SFO

19h 30m

2 stops

7:30 pm - 6:15 pm

SFO

BHD

14h 45m

1 stop

$947British Airways

Wed, Sep 2 - Sat, Sep 26

9:50 am - 9:02 pm

BHD

SFO

19h 12m

2 stops

2:00 pm - 4:55 pm

SFO

BHD

18h 55m

2 stops

$956KLM

Thu, Sep 3 - Sun, Sep 13

9:50 am - 12:36 am

BHD

SFO

22h 46m

2 stops

10:45 pm - 4:55 pm

SFO

BHD

34h 10m

2 stops

$960KLM

Tue, Sep 1 - Sat, Sep 26

6:30 am - 1:50 pm

BHD

SFO

15h 20m

1 stop

9:02 am - 12:25 pm

SFO

BHD

19h 23m

2 stops

$968American Airlines

Thu, Sep 3 - Sun, Sep 13

10:45 pm - 8:50 pm

BFS

SFO

30h 05m

2 stops

3:05 pm - 6:25 pm

SFO

BFS

19h 20m

1 stop

$1,057Multiple Airlines

Thu, Sep 3 - Sun, Sep 13

8:40 pm - 3:27 pm

BFS

SFO

26h 47m

2 stops

3:05 pm - 11:35 pm

SFO

BFS

24h 30m

2 stops

$1,094Multiple Airlines

Useful Info

Low season	August
High season	August
Cheapest flight	$456

Best time to beat the crowds with an average 28% drop in price.

Most popular time to fly and prices are also 28% lower 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 round-trip 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.

Calistoga

Marina

Rohnert Park

Emeryville

Pacifica

Capitola

Millbrae

Campbell

Newark

Mill Valley

Novato

Windsor

Union City

West Sacramento

Belmont

Richmond

American Canyon

Corte Madera

Jenner

Los Altos

Everything you need to know for your flight to San Francisco

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San Francisco (SFO)

$456 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 round-trip flight deals from Northern Ireland to San Francisco

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

Good to know

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 round-trip 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.

Traveling 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 rental

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

Find deals for your return flight