Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Belfast Intl Airport to San Francisco from $475

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast Intl Airport to San Francisco departing on 9/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Belfast Intl Airport to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:55 pm - 12:00 pm
BFS
-
SFO
48h 05m
2 stops
Multiple Airlines Logo
11:15 pm - 11:55 am
SFO
-
BFS
28h 40m
1 stop
$1,044Multiple Airlines
Fri, Apr 24 - Fri, May 1
Multiple Airlines Logo
9:40 pm - 9:55 pm
BFS
-
SFO
32h 15m
3 stops
Multiple Airlines Logo
8:30 am - 8:55 am
SFO
-
BFS
16h 25m
2 stops
$1,110Multiple Airlines
Sat, May 9 - Sat, May 16
Multiple Airlines Logo
6:20 am - 4:15 pm
BFS
-
SFO
17h 55m
2 stops
Multiple Airlines Logo
7:35 pm - 10:40 pm
SFO
-
BFS
19h 05m
2 stops
$1,121Multiple Airlines
Sat, May 9 - Sat, May 16
Multiple Airlines Logo
9:05 am - 5:35 pm
BFS
-
SFO
40h 30m
3 stops
Multiple Airlines Logo
5:35 pm - 8:45 pm
SFO
-
BFS
19h 10m
2 stops
$1,159Multiple Airlines
Fri, Apr 24 - Fri, May 1
Multiple Airlines Logo
9:05 am - 5:35 pm
BFS
-
SFO
40h 30m
3 stops
Multiple Airlines Logo
8:30 am - 9:15 pm
SFO
-
BFS
28h 45m
3 stops
$1,187Multiple Airlines
Fri, Apr 24 - Fri, May 1
Multiple Airlines Logo
3:25 pm - 4:50 pm
BFS
-
SFO
33h 25m
2 stops
Multiple Airlines Logo
3:05 pm - 8:25 pm
SFO
-
BFS
21h 20m
2 stops
$1,223Multiple Airlines
Thu, Apr 16 - Mon, Apr 20
Multiple Airlines Logo
6:10 am - 10:40 am
BFS
-
SFO
36h 30m
3 stops
Multiple Airlines Logo
3:05 pm - 8:25 pm
SFO
-
BFS
21h 20m
2 stops
$1,270Multiple Airlines
Thu, Apr 16 - Mon, Apr 20
Multiple Airlines Logo
6:10 am - 10:40 am
BFS
-
SFO
36h 30m
3 stops
Multiple Airlines Logo
7:25 am - 7:05 pm
SFO
-
BFS
27h 40m
3 stops
$1,339Multiple Airlines
Thu, Apr 16 - Mon, Apr 20
Multiple Airlines Logo
9:30 pm - 5:35 pm
BFS
-
SFO
28h 05m
2 stops
Multiple Airlines Logo
1:45 pm - 4:15 pm
SFO
-
BFS
18h 30m
2 stops
$1,387Multiple Airlines
Fri, Apr 24 - Fri, May 1
Multiple Airlines Logo
3:25 pm - 4:50 pm
BFS
-
SFO
33h 25m
2 stops
Multiple Airlines Logo
8:10 pm - 7:05 pm
SFO
-
BFS
14h 55m
1 stop
$1,675Multiple Airlines
Thu, Apr 16 - Mon, Apr 20

momondo Fare Finder

 
Customize your flight search to find flights from Belfast Intl Airport to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 29, 2026.
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 round-trip

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 4/24

7:55 pm-12:00 pm

2 stops48h 05m

San Francisco

Fri 5/1

11:15 pm-11:55 am

1 stop28h 40m

$1,044

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sat 5/9

9:40 pm-9:55 pm

3 stops32h 15m

San Francisco

Sat 5/16

8:30 am-8:55 am

2 stops16h 25m

$1,110
Quickest round-trip

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sat 5/9

6:20 am-4:15 pm

2 stops17h 55m

San Francisco

Sat 5/16

7:35 pm-10:40 pm

2 stops19h 05m

$1,121

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 4/24

9:05 am-5:35 pm

3 stops40h 30m

San Francisco

Fri 5/1

5:35 pm-8:45 pm

2 stops19h 10m

$1,159

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 4/24

9:05 am-5:35 pm

3 stops40h 30m

San Francisco

Fri 5/1

8:30 am-9:15 pm

3 stops28h 45m

$1,187

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Thu 4/16

3:25 pm-4:50 pm

2 stops33h 25m

San Francisco

Mon 4/20

3:05 pm-8:25 pm

2 stops21h 20m

$1,223

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Thu 4/16

6:10 am-10:40 am

3 stops36h 30m

San Francisco

Mon 4/20

3:05 pm-8:25 pm

2 stops21h 20m

$1,270

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Thu 4/16

6:10 am-10:40 am

3 stops36h 30m

San Francisco

Mon 4/20

7:25 am-7:05 pm

3 stops27h 40m

$1,339

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 4/24

9:30 pm-5:35 pm

2 stops28h 05m

San Francisco

Fri 5/1

1:45 pm-4:15 pm

2 stops18h 30m

$1,387

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Thu 4/16

3:25 pm-4:50 pm

2 stops33h 25m

San Francisco

Mon 4/20

8:10 pm-7:05 pm

1 stop14h 55m

$1,675

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

See travel insights to San Francisco from

How to get the cheapest flight ticket from Belfast Intl Airport 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

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

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 round-trip 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

Fastest flight time

19h 10m

Direct flights

None
The fastest flight from Belfast Intl Airport to San Francisco takes 19h 10m
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

  • How far is Belfast Intl to San Francisco by plane?

    Belfast Intl and San Francisco are 5017.1 mi apart from one another. By plane, this route typically takes 19h 10m.

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

  • How old do you have to be to fly from Belfast Intl Airport 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 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.

  • What is the most popular airline from Belfast Intl Airport to San Francisco?

Best airlines flying from Belfast Intl Airport to San Francisco

Compare and see reviews for airlines that fly from Belfast Intl Airport to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $542Free CancellationRating
6.7
7,829 reviews
Search British Airways flights

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Sonoma
Bodega Bay
Walnut Creek
Roseville
Hayward
Berkeley
Santa Clara
Big Sur
Fremont
Calistoga
Vallejo
Salinas
Daly City
Half Moon Bay
Milpitas
South San Francisco
Pacific Grove

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Belfast to San Francisco for you.

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

Flights from Belfast 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 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.

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 4/28
Tue 5/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States