What is the cheapest airline that flies from Northern Ireland to San Francisco?

British Airways and KLM are the most popular carriers operating from Northern Ireland to San Francisco

When did momondo last update prices for flights from Northern Ireland to San Francisco Airport?

Prices for flights from Northern Ireland to San Francisco Airport refresh daily.

How many operators does momondo search for flights from Northern Ireland to San Francisco Airport?

As of August 2026, there is 1 operator available to choose from for flights from Northern Ireland to San Francisco Airport.

How old do you have to be to fly from Northern Ireland to San Francisco Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to San Francisco Airport.

What documentation or ID do you need to fly to San Francisco Airport?

The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£365 Cheap Flights from Northern Ireland to San Francisco in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Northern Ireland to San Francisco

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

06:10 - 18:00BFS Belfast Intl-SFO San Francisco

19h 50m2 stops London Gatwick Paris Charles de Gaulle

15:05 - 20:25SFO San Francisco-BFS Belfast Intl

21h 20m2 stops Paris Charles de Gaulle London Gatwick

£609Multiple Airlines

Mon, 28 Sep - Mon, 5 Oct

06:35 - 14:55BHD Belfast City-SFO San Francisco

16h 20m1 stop London Heathrow

09:12 - 10:55SFO San Francisco-BHD Belfast City

17h 43m2 stops Chicago O'Hare Intl London Heathrow

£640British Airways

Sat, 30 Jan - Thu, 4 Feb

06:35 - 14:55BHD Belfast City-SFO San Francisco

16h 20m1 stop London Heathrow

17:25 - 18:45SFO San Francisco-BHD Belfast City

17h 20m1 stop London Heathrow

£640British Airways

Sat, 30 Jan - Thu, 4 Feb

06:30 - 13:50BHD Belfast City-SFO San Francisco

15h 20m1 stop London Heathrow

19:30 - 19:25SFO San Francisco-BHD Belfast City

15h 55m1 stop London Heathrow

£646British Airways

Thu, 3 Sep - Mon, 7 Sep

11:45 - 22:34BHD Belfast City-SFO San Francisco

18h 49m2 stops London Heathrow Dallas/Fort Worth

10:29 - 10:55SFO San Francisco-BHD Belfast City

16h 26m2 stops New York John F Kennedy Intl London Heathrow

£649British Airways

Sat, 30 Jan - Thu, 4 Feb

09:35 - 20:23BHD Belfast City-SFO San Francisco

18h 48m2 stops London Heathrow Dallas/Fort Worth

19:30 - 17:30SFO San Francisco-BHD Belfast City

14h 00m1 stop London Heathrow

£663British Airways

Thu, 3 Sep - Mon, 7 Sep

17:30 - 11:45BHD Belfast City-SFO San Francisco

26h 15m1 stop Amsterdam Schiphol

07:00 - 09:20SFO San Francisco-BHD Belfast City

18h 20m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£667Delta

Mon, 14 Sep - Mon, 21 Sep

09:50 - 00:34BHD Belfast City-SFO San Francisco

22h 44m2 stops Amsterdam Schiphol New York John F Kennedy Intl

06:35 - 09:20SFO San Francisco-BHD Belfast City

18h 45m2 stops Minneapolis St Paul Amsterdam Schiphol

£671Delta

Mon, 14 Sep - Mon, 21 Sep

06:30 - 19:27BHD Belfast City-SFO San Francisco

20h 57m2 stops London Heathrow Los Angeles Los Angeles

16:31 - 18:45SFO San Francisco-BHD Belfast City

18h 14m2 stops Los Angeles Los Angeles London Heathrow

£673British Airways

Thu, 3 Sep - Mon, 7 Sep

08:40 - 18:45BHD Belfast City-SFO San Francisco

18h 05m1 stop London Heathrow

20:35 - 20:10SFO San Francisco-BHD Belfast City

15h 35m1 stop London Heathrow

£683British Airways

Wed, 2 Dec - Sun, 6 Dec

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British Airways flights from Northern Ireland to San Francisco

Our best British Airways deals on Northern Ireland to San Francisco flight tickets

British Airways

30 Jan

BHD06:35Belfast City

16h 20m

1 stop

SFO14:55San Francisco

4 Feb

SFO17:25San Francisco

17h 20m

1 stop

BHD18:45Belfast City

£640

British Airways

3 Sept

BHD06:30Belfast City

15h 20m

1 stop

SFO13:50San Francisco

7 Sept

SFO19:30San Francisco

15h 55m

1 stop

BHD19:25Belfast City

£646

British Airways

30 Jan

BHD11:45Belfast City

18h 49m

2 stops

SFO22:34San Francisco

4 Feb

SFO10:29San Francisco

16h 26m

2 stops

BHD10:55Belfast City

£649

Delta flights from Northern Ireland to San Francisco

Our best Delta deals on Northern Ireland to San Francisco flight tickets

Delta

14 Sept

BHD17:30Belfast City

26h 15m

1 stop

SFO11:45San Francisco

21 Sept

SFO07:00San Francisco

18h 20m

2 stops

BHD09:20Belfast City

£667

Delta

14 Sept

BHD09:50Belfast City

22h 44m

2 stops

SFO00:34San Francisco

21 Sept

SFO06:35San Francisco

18h 45m

2 stops

BHD09:20Belfast City

£671

momondo Fare Finder

Use the filters below to find and compare flights from Northern Ireland to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Mon 28/9

06:10-18:00

2 stops19h 50m

San Francisco

Mon 5/10

15:05-20:25

2 stops21h 20m

£609

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sat 30/1

06:35-14:55

1 stop16h 20m

San Francisco

Thu 4/2

09:12-10:55

2 stops17h 43m

£640

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sat 30/1

06:35-14:55

1 stop16h 20m

San Francisco

Thu 4/2

17:25-18:45

1 stop17h 20m

£640

Fastest return journey

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 3/9

06:30-13:50

1 stop15h 20m

San Francisco

Mon 7/9

19:30-19:25

1 stop15h 55m

£646

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sat 30/1

11:45-22:34

2 stops18h 49m

San Francisco

Thu 4/2

10:29-10:55

2 stops16h 26m

£649

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 3/9

09:35-20:23

2 stops18h 48m

San Francisco

Mon 7/9

19:30-17:30

1 stop14h 00m

£663

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Mon 14/9

17:30-11:45

1 stop26h 15m

San Francisco

Mon 21/9

07:00-09:20

2 stops18h 20m

£667

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Mon 14/9

09:50-00:34

2 stops22h 44m

San Francisco

Mon 21/9

06:35-09:20

2 stops18h 45m

£671

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 3/9

06:30-19:27

2 stops20h 57m

San Francisco

Mon 7/9

16:31-18:45

2 stops18h 14m

£673

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Wed 2/12

08:40-18:45

1 stop18h 05m

San Francisco

Sun 6/12

20:35-20:10

1 stop15h 35m

£683

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Northern Ireland to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to San Francisco?

The month of November is, on average, the cheapest month to fly to San Francisco from Northern Ireland, with most prices found around £0. If you are unable to visit San Francisco during the month of November, then departing from Northern Ireland during the month January is also very affordable. Most momondo users find prices during this month for around £0.

Cheap Northern Ireland to San Francisco flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to San Francisco

Best price found	£365
Fastest flight time	15h 00m
Direct flights	None

The best one-way flight to San Francisco from Northern Ireland in the past 72 hours is £365. The best return flight deal from Northern Ireland to San Francisco found on momondo in the last 72 hours is £609.

The fastest flight from Northern Ireland to San Francisco takes 15h 00m

There are no direct flights from Northern Ireland to San Francisco. There are no popular flight routes from Northern Ireland to San Francisco.

Search flight deals

Frequently asked questions about flying from Northern Ireland to San Francisco

When did momondo last update prices for flights from Northern Ireland to San Francisco Airport?
Prices for flights from Northern Ireland to San Francisco Airport refresh daily.
How many operators does momondo search for flights from Northern Ireland to San Francisco Airport?
As of August 2026, there is 1 operator available to choose from for flights from Northern Ireland to San Francisco Airport.
How old do you have to be to fly from Northern Ireland to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Northern Ireland to San Francisco

Compare and see reviews for airlines that fly from Northern Ireland to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £517	Free Cancellation	Rating 6.7 8,170 reviews		Search British Airways flights

South San Francisco

Santa Cruz

Sunnyvale

Calistoga

Rohnert Park

Carmel-by-the-Sea

Windsor

Burlingame

Belmont

Big Sur

Sausalito

San Bruno

Pacific Grove

Aptos

Newark

Mill Valley

Campbell

Palo Alto

Seaside

Roseville

Why use momondo?

Why should I use momondo to find a flight deal from Northern Ireland to San Francisco?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Northern Ireland to San Francisco . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Northern Ireland to San Francisco with flexible booking policies on momondo?

Flights from Northern Ireland to San Francisco with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Northern Ireland to San Francisco?

momondo provides multiple filters to help you find the best flight to San Francisco from Northern Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Northern Ireland to San Francisco right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Northern Ireland to San Francisco now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Francisco and let you know when they change.