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

British Airways, Aer Lingus, and KLM are the most popular carriers operating from Belfast to San Francisco

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

Prices for flights from Belfast to San Francisco Airport are refreshed on a daily basis.

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

As of October 2025, there are 2 operators available to choose from for flights from Belfast to San Francisco Airport.

How old do you have to be to fly from Belfast 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 Belfast 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.

£346 Cheap Flights from Belfast to San Francisco in 2025/26

Q: What is the typical price of a round-trip flight between Belfast and San Francisco?

Prices are currently typical for flights on this route. Typical prices usually range from £566 to £685. The lowest price recently found on this route was £573.

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Find the cheapest flights from Belfast to San Francisco

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

08:10 - 14:30BFS-SFO

38h 20m3 stops

13:00 - 20:15SFO-BFS

23h 15m3 stops

£573Multiple Airlines

Find Deal

Tue, 18 Nov - Tue, 25 Nov

09:15 - 15:00BHD-SFO

13h 45m1 stop

13:25 - 13:55SFO-BHD

17h 30m2 stops

£585American Airlines

Find Deal

Wed, 4 Mar - Sun, 8 Mar

12:25 - 18:45BHD-SFO

14h 20m1 stop

13:25 - 13:55SFO-BHD

17h 30m2 stops

£586American Airlines

Find Deal

Wed, 4 Mar - Sun, 8 Mar

06:35 - 20:52BHD-SFO

22h 17m2 stops

13:25 - 13:55SFO-BHD

17h 30m2 stops

£589American Airlines

Find Deal

Wed, 4 Mar - Sun, 8 Mar

12:25 - 00:28BHD-SFO

20h 03m2 stops

13:25 - 13:55SFO-BHD

17h 30m2 stops

£590American Airlines

Find Deal

Wed, 4 Mar - Sun, 8 Mar

10:40 - 18:45BHD-SFO

16h 05m1 stop

21:40 - 18:35SFO-BHD

13h 55m1 stop

£599American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

11:05 - 22:28BHD-SFO

19h 23m2 stops

13:33 - 14:15SFO-BHD

17h 42m2 stops

£607British Airways

Find Deal

Thu, 5 Mar - Mon, 9 Mar

08:10 - 14:30BFS-SFO

38h 20m3 stops

19:25 - 21:50SFO-BFS

18h 25m2 stops

£634Multiple Airlines

Find Deal

Tue, 18 Nov - Tue, 25 Nov

06:30 - 12:50BHD-SFO

13h 20m1 stop

14:20 - 16:55SFO-BHD

18h 35m2 stops

£843Delta

Find Deal

Thu, 26 Mar - Mon, 30 Mar

06:30 - 19:28BHD-SFO

19h 58m2 stops

14:20 - 16:55SFO-BHD

18h 35m2 stops

£847Delta

Find Deal

Thu, 26 Mar - Mon, 30 Mar

American Airlines flights from Belfast to San Francisco

Our best American Airlines deals on Belfast to San Francisco flight tickets

American Airlines

4 Mar

BHD09:15Belfast City

13h 45m

1 stop

SFO15:00San Francisco

8 Mar

SFO13:25San Francisco

17h 30m

2 stops

BHD13:55Belfast City

£585

Find similar

American Airlines

4 Mar

BHD12:25Belfast City

14h 20m

1 stop

SFO18:45San Francisco

8 Mar

SFO13:25San Francisco

17h 30m

2 stops

BHD13:55Belfast City

£586

Find similar

American Airlines

4 Mar

BHD06:35Belfast City

22h 17m

2 stops

SFO20:52San Francisco

8 Mar

SFO13:25San Francisco

17h 30m

2 stops

BHD13:55Belfast City

£589

Find similar

Delta flights from Belfast to San Francisco

Our best Delta deals on Belfast to San Francisco flight tickets

Delta

26 Mar

BHD06:30Belfast City

13h 20m

1 stop

SFO12:50San Francisco

30 Mar

SFO14:20San Francisco

18h 35m

2 stops

BHD16:55Belfast City

£843

Find similar

Delta

26 Mar

BHD06:30Belfast City

19h 58m

2 stops

SFO19:28San Francisco

30 Mar

SFO14:20San Francisco

18h 35m

2 stops

BHD16:55Belfast City

£847

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 18/11

08:10-14:30

3 stops38h 20m

San Francisco

Tue 25/11

13:00-20:15

3 stops23h 15m

£573

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 4/3

09:15-15:00

1 stop13h 45m

San Francisco

Sun 8/3

13:25-13:55

2 stops17h 30m

£585

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 4/3

12:25-18:45

1 stop14h 20m

San Francisco

Sun 8/3

13:25-13:55

2 stops17h 30m

£586

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 4/3

06:35-20:52

2 stops22h 17m

San Francisco

Sun 8/3

13:25-13:55

2 stops17h 30m

£589

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 4/3

12:25-00:28

2 stops20h 03m

San Francisco

Sun 8/3

13:25-13:55

2 stops17h 30m

£590

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 5/3

10:40-18:45

1 stop16h 05m

San Francisco

Mon 9/3

21:40-18:35

1 stop13h 55m

£599

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 5/3

11:05-22:28

2 stops19h 23m

San Francisco

Mon 9/3

13:33-14:15

2 stops17h 42m

£607

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 18/11

08:10-14:30

3 stops38h 20m

San Francisco

Tue 25/11

19:25-21:50

2 stops18h 25m

£634

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 26/3

06:30-12:50

1 stop13h 20m

San Francisco

Mon 30/3

14:20-16:55

2 stops18h 35m

£843

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 26/3

06:30-19:28

2 stops19h 58m

San Francisco

Mon 30/3

14:20-16:55

2 stops18h 35m

£847

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 Belfast 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 typical price of a round-trip flight between Belfast and San Francisco?

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart on your flight to San Francisco is on a Thursday when prices can be found for as low as £489. This is often the case because there is less demand to fly during this day of the week. Flights from Belfast to San Francisco on a Tuesday will generally be more expensive and average around £720. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to San Francisco?

Our most recent data shows that the best time of day to fly to San Francisco is in the afternoon. Flights from Belfast to San Francisco during this time can be as low as £558. Try not to purchase tickets in the morning because they tend to be around £591. Of course, these prices can vary depending on the time of year and what airport you fly to.

Cheap Belfast to San Francisco flight deals and tips

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

Direct flights	None

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

Search flight deals

How far is Belfast to San Francisco by plane?
San Francisco is 5028.1 mi away from Belfast. A reasonable flight in good conditions will take 13h 20m.
When did momondo last update prices for flights from Belfast to San Francisco Airport?
Prices for flights from Belfast to San Francisco Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Belfast to San Francisco Airport?
As of October 2025, there are 2 operators available to choose from for flights from Belfast to San Francisco Airport.
How old do you have to be to fly from Belfast 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 Belfast 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 Belfast to San Francisco

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

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £395	Free Cancellation	Rating 6.7 7,430 reviews		Search British Airways flights
American Airlines	PriceFrom £470	Free Cancellation	Rating 7.2 11,040 reviews		Search American Airlines flights

Carmel-by-the-Sea

Santa Clara

Seaside

Salinas

Big Sur

Rohnert Park

Sunnyvale

San Ramon

South San Francisco

Capitola

Campbell

Palo Alto

Sausalito

San Bruno

Santa Cruz

Woodland

Redwood City

Burlingame

Modesto

Aptos

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

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

All flight searches from Belfast to San Francisco on momondo can be filtered to show those which offer flexible booking policies.

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

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

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

Of course. momondo tracks the price of Belfast to San Francisco flights. All you need is a valid email address and we will do the rest; it is that quick and easy.