How do I get Price Alerts for flights from Belfast Intl Airport to San Francisco?

Confirm your travel details to search for the latest offers for flights from Belfast Intl Airport to San Francisco . While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

How can I save money on flights from Belfast Intl Airport to San Francisco with momondo?

Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore” . Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

How does momondo find its flight prices?

momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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

Prices for flights from Belfast Intl Airport to San Francisco Airport were last updated today.

How old do you have to be to fly from Belfast Intl Airport to San Francisco Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Belfast Intl Airport to San Francisco Airport.

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

The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£350 Cheap Flights from Belfast Intl Airport to San Francisco in 2026/27

Find the cheapest flights from Belfast Intl Airport to San Francisco

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

14:45 - 15:50BFS Belfast Intl-SFO San Francisco

32h 05m2 stops Birmingham Kastrup Copenhagen

16:45 - 22:20SFO San Francisco-BFS Belfast Intl

21h 35m2 stops Kastrup Copenhagen Birmingham

£678Multiple Airlines

Thu, 29 Oct - Mon, 2 Nov

13:35 - 16:30BFS Belfast Intl-SFO San Francisco

34h 55m2 stops London Gatwick Zurich

08:25 - 22:10SFO San Francisco-BFS Belfast Intl

29h 45m3 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat London Stansted

£775Multiple Airlines

Fri, 6 Nov - Fri, 13 Nov

07:00 - 10:39BFS Belfast Intl-SFO San Francisco

35h 39m3 stops Manchester Cancun Toronto Pearson Intl

06:02 - 20:55SFO San Francisco-BFS Belfast Intl

31h 53m3 stops Denver Intl Reykjavik Keflavik Intl Manchester

£781Multiple Airlines

Tue, 20 Oct - Tue, 27 Oct

17:10 - 14:35BFS Belfast Intl-SFO San Francisco

29h 25m2 stops Malaga Lisbon Humberto Delgado

06:02 - 20:25SFO San Francisco-BFS Belfast Intl

31h 23m3 stops Denver Intl Reykjavik Keflavik Intl Manchester

£785Multiple Airlines

Tue, 20 Oct - Tue, 27 Oct

14:30 - 17:05BFS Belfast Intl-SFO San Francisco

33h 35m3 stops London Gatwick Barcelona-El Prat Lisbon Humberto Delgado

08:00 - 12:25SFO San Francisco-BFS Belfast Intl

20h 25m2 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat

£811Multiple Airlines

Thu, 25 Mar - Sat, 17 Apr

14:30 - 17:05BFS Belfast Intl-SFO San Francisco

33h 35m3 stops London Gatwick Barcelona-El Prat Lisbon Humberto Delgado

11:25 - 17:30SFO San Francisco-BFS Belfast Intl

22h 05m3 stops Vancouver Intl Dublin Edinburgh Turnhouse

£818Multiple Airlines

Thu, 25 Mar - Sat, 17 Apr

14:30 - 21:10BFS Belfast Intl-SFO San Francisco

37h 40m1 stop Paris Charles de Gaulle

17:20 - 08:05SFO San Francisco-BFS Belfast Intl

30h 45m2 stops Dublin Liverpool J. Lennon

£819Multiple Airlines

Thu, 29 Oct - Mon, 2 Nov

14:30 - 21:10BFS Belfast Intl-SFO San Francisco

37h 40m1 stop Paris Charles de Gaulle

16:40 - 07:30SFO San Francisco-BFS Belfast Intl

30h 50m1 stop London Heathrow

£821Multiple Airlines

Thu, 29 Oct - Mon, 2 Nov

07:00 - 15:35BFS Belfast Intl-SFO San Francisco

16h 35m2 stops Manchester Dublin

17:20 - 22:35SFO San Francisco-BFS Belfast Intl

21h 15m2 stops Dublin Manchester

£831Multiple Airlines

Fri, 6 Nov - Fri, 13 Nov

21:10 - 20:32BFS Belfast Intl-SFO San Francisco

31h 22m3 stops London Gatwick Zurich Los Angeles

06:02 - 21:55SFO San Francisco-BFS Belfast Intl

31h 53m3 stops Denver Intl Reykjavik Keflavik Intl Glasgow Intl

£853Multiple Airlines

Fri, 6 Nov - Fri, 13 Nov

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

momondo Fare Finder

Use the filters below to find and compare flights from Belfast Intl Airport 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

Thu 29/10

14:45-15:50

2 stops32h 05m

San Francisco

Mon 2/11

16:45-22:20

2 stops21h 35m

£678

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Fri 6/11

13:35-16:30

2 stops34h 55m

San Francisco

Fri 13/11

08:25-22:10

3 stops29h 45m

£775

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Tue 20/10

07:00-10:39

3 stops35h 39m

San Francisco

Tue 27/10

06:02-20:55

3 stops31h 53m

£781

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Tue 20/10

17:10-14:35

2 stops29h 25m

San Francisco

Tue 27/10

06:02-20:25

3 stops31h 23m

£785

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Thu 25/3

14:30-17:05

3 stops33h 35m

San Francisco

Sat 17/4

08:00-12:25

2 stops20h 25m

£811

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Thu 25/3

14:30-17:05

3 stops33h 35m

San Francisco

Sat 17/4

11:25-17:30

3 stops22h 05m

£818

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Thu 29/10

14:30-21:10

1 stop37h 40m

San Francisco

Mon 2/11

17:20-08:05

2 stops30h 45m

£819

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Thu 29/10

14:30-21:10

1 stop37h 40m

San Francisco

Mon 2/11

16:40-07:30

1 stop30h 50m

£821

Fastest return journey

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Fri 6/11

07:00-15:35

2 stops16h 35m

San Francisco

Fri 13/11

17:20-22:35

2 stops21h 15m

£831

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Fri 6/11

21:10-20:32

3 stops31h 22m

San Francisco

Fri 13/11

06:02-21:55

3 stops31h 53m

£853

Flights are sorted by cheapest return flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

When to book flights from Belfast Intl Airport to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Belfast Intl Airport to San Francisco according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Belfast Intl Airport to San Francisco (BFS to SFO) flight deals and tips

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

Best price found	£350
Fastest flight time	15h 40m
Direct flights	None

The best one-way flight to San Francisco from Belfast Intl Airport in the past 72 hours is £350. The best return flight deal from Belfast Intl Airport to San Francisco found on momondo in the last 72 hours is £678.

The fastest flight from Belfast Intl Airport to San Francisco takes 15h 40m

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

Search flight deals

Frequently asked questions about flying from Belfast Intl Airport to San Francisco

How far is Belfast Intl to San Francisco by plane?
San Francisco is 5017.1 mi away from Belfast Intl. Typically, this will take 15h 40m by plane in normal conditions.
When did momondo last update prices for flights from Belfast Intl Airport to San Francisco Airport?
Prices for flights from Belfast Intl Airport to San Francisco Airport were last updated today.
How old do you have to be to fly from Belfast Intl Airport to San Francisco Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Belfast Intl Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Belfast Intl Airport to San Francisco

How do I get Price Alerts for flights from Belfast Intl Airport to San Francisco?
Confirm your travel details to search for the latest offers for flights from Belfast Intl Airport to San Francisco. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.
How can I save money on flights from Belfast Intl Airport to San Francisco with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

South San Francisco

Santa Cruz

Sunnyvale

Calistoga

Carmel-by-the-Sea

Rohnert Park

Windsor

Burlingame

Belmont

Big Sur

Sausalito

San Bruno

Pacific Grove

Aptos

Mill Valley

Newark

Palo Alto

Campbell

Seaside

Roseville

Why use momondo?

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

Finding the right flight to San Francisco from Belfast is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Francisco quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to San Francisco from Belfast which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Belfast to San Francisco flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Belfast to San Francisco flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.