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Cheap flights from San Francisco to Belfast from $367

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Belfast departing on 9/1. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from San Francisco to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:55 pm - 11:20 pm
SFO
-
BFS
26h 25m
2 stops
Multiple Airlines Logo
8:15 pm - 4:40 pm
BFS
-
SFO
28h 25m
2 stops
$867Multiple Airlines
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
5:40 pm - 9:20 pm
SFO
-
BFS
19h 40m
2 stops
Multiple Airlines Logo
8:05 pm - 8:50 pm
BFS
-
SFO
32h 45m
1 stop
$981Multiple Airlines
Tue, Sep 8 - Thu, Sep 17
Multiple Airlines Logo
6:00 am - 4:20 pm
SFO
-
BFS
26h 20m
3 stops
Multiple Airlines Logo
11:30 pm - 2:30 pm
BFS
-
SFO
47h 00m
3 stops
$987Multiple Airlines
Tue, Jun 2 - Tue, Jun 16
Multiple Airlines Logo
8:30 am - 3:15 pm
SFO
-
BFS
22h 45m
2 stops
Multiple Airlines Logo
7:35 am - 2:35 pm
BFS
-
SFO
39h 00m
3 stops
$1,055Multiple Airlines
Tue, Aug 4 - Tue, Aug 18
Multiple Airlines Logo
11:45 am - 4:20 pm
SFO
-
BFS
20h 35m
2 stops
Multiple Airlines Logo
11:30 pm - 2:30 pm
BFS
-
SFO
47h 00m
3 stops
$1,064Multiple Airlines
Tue, Jun 2 - Tue, Jun 16
Multiple Airlines Logo
11:10 am - 10:30 pm
SFO
-
BFS
27h 20m
3 stops
Multiple Airlines Logo
7:35 am - 2:35 pm
BFS
-
SFO
39h 00m
3 stops
$1,092Multiple Airlines
Tue, Aug 4 - Tue, Aug 18
Multiple Airlines Logo
8:30 am - 3:15 pm
SFO
-
BFS
22h 45m
2 stops
Multiple Airlines Logo
5:10 pm - 2:35 pm
BFS
-
SFO
29h 25m
2 stops
$1,161Multiple Airlines
Tue, Aug 4 - Tue, Aug 18
Multiple Airlines Logo
11:45 am - 4:20 pm
SFO
-
BFS
20h 35m
2 stops
Multiple Airlines Logo
5:10 pm - 2:35 pm
BFS
-
SFO
29h 25m
2 stops
$1,169Multiple Airlines
Tue, Jun 2 - Tue, Jun 16
Multiple Airlines Logo
6:00 am - 7:05 pm
SFO
-
BFS
29h 05m
2 stops
Multiple Airlines Logo
9:55 pm - 3:55 pm
BFS
-
SFO
26h 00m
2 stops
$1,247Multiple Airlines
Mon, Jun 1 - Mon, Jun 8
Multiple Airlines Logo
8:30 am - 9:35 am
SFO
-
BFS
17h 05m
2 stops
Multiple Airlines Logo
7:10 am - 12:00 pm
BFS
-
SFO
36h 50m
3 stops
$1,252Multiple Airlines
Sat, Jul 11 - Sun, Jul 26

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Belfast Intl Airport 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 24, 2026.
Use the filters below to find and compare flights from San Francisco to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 5/5

12:55 pm-11:20 pm

2 stops26h 25m

Belfast Intl

Tue 5/12

8:15 pm-4:40 pm

2 stops28h 25m

$867

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 9/8

5:40 pm-9:20 pm

2 stops19h 40m

Belfast Intl

Thu 9/17

8:05 pm-8:50 pm

1 stop32h 45m

$981

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 6/2

6:00 am-4:20 pm

3 stops26h 20m

Belfast Intl

Tue 6/16

11:30 pm-2:30 pm

3 stops47h 00m

$987

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 8/4

8:30 am-3:15 pm

2 stops22h 45m

Belfast Intl

Tue 8/18

7:35 am-2:35 pm

3 stops39h 00m

$1,055

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 6/2

11:45 am-4:20 pm

2 stops20h 35m

Belfast Intl

Tue 6/16

11:30 pm-2:30 pm

3 stops47h 00m

$1,064

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 8/4

11:10 am-10:30 pm

3 stops27h 20m

Belfast Intl

Tue 8/18

7:35 am-2:35 pm

3 stops39h 00m

$1,092

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 8/4

8:30 am-3:15 pm

2 stops22h 45m

Belfast Intl

Tue 8/18

5:10 pm-2:35 pm

2 stops29h 25m

$1,161
Quickest round-trip

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 6/2

11:45 am-4:20 pm

2 stops20h 35m

Belfast Intl

Tue 6/16

5:10 pm-2:35 pm

2 stops29h 25m

$1,169

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Mon 6/1

6:00 am-7:05 pm

2 stops29h 05m

Belfast Intl

Mon 6/8

9:55 pm-3:55 pm

2 stops26h 00m

$1,247

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sat 7/11

8:30 am-9:35 am

2 stops17h 05m

Belfast Intl

Sun 7/26

7:10 am-12:00 pm

3 stops36h 50m

$1,252

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from San Francisco to Belfast Intl Airport

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 cheapest month to fly to Belfast Intl Airport?

The month of April is, on average, the cheapest month to fly to Belfast Intl Airport from San Francisco, with most prices found around $587. If you’re not able to fly to Belfast Intl Airport in April, then February is your next best option. Flight prices from San Francisco to Belfast Intl Airport during February average around $614.

When to book flights from San Francisco to Belfast Intl Airport

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

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

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

Fastest flight time

14h 30m

Direct flights

None
The fastest flight from San Francisco to Belfast Intl Airport takes 14h 30m
There are no direct flights from San Francisco to Belfast Intl Airport. There are no popular flight routes from San Francisco to Belfast Intl Airport.
Search flight deals

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

    Belfast Intl is 5016.8 mi away from San Francisco. In terms of flight time, this usually takes a little over 14h 30m.

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

    Prices for flights from San Francisco Airport to Belfast Intl Airport refresh daily.

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

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

  • What documentation or ID do you need to fly to Belfast Intl Airport?

    The required travel and health documents for your Belfast Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Belfast Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from San Francisco to Belfast Intl Airport

Compare and see reviews for airlines that fly from San Francisco to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $586Free CancellationRating
6.7
7,813 reviews
Search British Airways flights

Traveling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Armagh
Cookstown
Ballymena
Newry
Dungannon

Why use momondo?

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

It is quick and easy to find San Francisco to Belfast flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Belfast that suits you.

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

Yes. All flights to Belfast from San Francisco on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for San Francisco to Belfast 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 San Francisco to Belfast right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Belfast, momondo offers a useful price alert feature which will track prices for flights to Belfast from San Francisco and alert you when they change.

An easier way to manage your Belfast Intl Airport trip

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