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>

$443 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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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

Recent round-trip flight deals from Northern Ireland to San Francisco

Wed, Aug 20 - Fri, Sep 5

1:50 pm - 11:07 pmBHD-SFO

17h 17m2 stops

2:06 pm - 3:30 pmSFO-BHD

17h 24m2 stops

$742British Airways

Find Deal

Wed, Aug 20 - Fri, Sep 5

6:30 am - 11:45 amBHD-SFO

13h 15m1 stop

1:00 pm - 4:55 pmSFO-BHD

19h 55m2 stops

$745Delta

Find Deal

Wed, Aug 20 - Fri, Sep 5

6:30 am - 3:55 pmBHD-SFO

17h 25m2 stops

1:00 pm - 4:55 pmSFO-BHD

19h 55m2 stops

$750Delta

Find Deal

Thu, Jul 3 - Mon, Jul 7

12:40 pm - 10:31 pmBHD-SFO

17h 51m2 stops

4:30 pm - 3:40 pmSFO-BHD

15h 10m1 stop

$824American Airlines

Find Deal

Thu, Jul 3 - Mon, Jul 7

6:35 am - 1:50 pmBHD-SFO

15h 15m1 stop

7:20 pm - 7:35 pmSFO-BHD

16h 15m1 stop

$855American Airlines

Find Deal

Thu, Jul 31 - Thu, Aug 7

6:00 am - 9:30 amBFS-SFO

35h 30m3 stops

7:30 am - 4:15 pmSFO-BFS

24h 45m3 stops

$1,014

Find Deal

Thu, Jul 31 - Thu, Aug 7

6:00 am - 9:30 amBFS-SFO

35h 30m3 stops

8:40 am - 4:15 pmSFO-BFS

23h 35m2 stops

$1,076

Find Deal

Fri, Aug 1 - Fri, Aug 8

8:35 am - 1:59 pmBFS-SFO

37h 24m3 stops

7:30 am - 11:50 amSFO-BFS

20h 20m3 stops

$1,585

Find Deal

Thu, Jul 31 - Thu, Aug 7

7:10 am - 3:55 pmBFS-SFO

16h 45m2 stops

8:40 am - 4:15 pmSFO-BFS

23h 35m2 stops

$1,706

Find Deal

Fri, Aug 1 - Fri, Aug 8

8:35 am - 8:53 pmBFS-SFO

20h 18m2 stops

11:35 am - 9:10 pmSFO-BFS

25h 35m3 stops

$1,755

Find Deal

Useful Info

Low season	February
High season	June
Cheapest flight	$443

Best time to beat the crowds with an average 13% drop in price.

Most popular time to fly with an average 16% increase in price.

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.

Newark

Glen Ellen

Everything you need to know for your flight to San Francisco

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San Francisco (SFO)

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$443 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

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