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$316+ Cheap flights from San Francisco (SFO) to Belfast

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
Jun 6 — Jun 131
Sat 6/6
Sat 6/13
1 adult, Economy
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Cheap flight deals from San Francisco to Belfast

Cheapest flights from San Francisco to Belfast
Explore the most affordable flight options available from San Francisco to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 7, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:30 pm
SFO
-
BHD
1 stop17h 05m
British Airways
Fri 11/138:45 am
BHD
-
SFO
1 stop14h 15m
British Airways
Deal found 5/2$858
This British Airways deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/98:40 pm
SFO
-
BHD
1 stop13h 55m
British Airways
Wed 11/117:25 pm
BHD
-
SFO
1 stop31h 20m
British Airways
Deal found 5/4$875
This British Airways deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/144:35 pm
SFO
-
BHD
1 stop14h 55m
British Airways
Wed 9/168:35 pm
BHD
-
SFO
1 stop25h 15m
British Airways
Deal found 5/6$876
This American Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:06 pm
SFO
-
BHD
2 stops17h 59m
American Airlines
Fri 11/136:45 am
BHD
-
SFO
2 stops19h 39m
American Airlines
Deal found 5/2$888
This Cheapflightsfares deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:35 pm
SFO
-
BHD
1 stop17h 35m
British Airways
Fri 12/188:45 am
BHD
-
SFO
1 stop14h 15m
British Airways
Deal found 5/7$916
This Mytrip deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
SFO
-
BFS
2 stops29h 15m
Multiple Airlines
Mon 6/89:15 am
BFS
-
SFO
3 stops39h 50m
Multiple Airlines
Deal found 5/3$997
This SmartFares deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/101:45 pm
SFO
-
BHD
1 stop19h 10m
Virgin Atlantic
Tue 5/269:50 am
BHD
-
SFO
1 stop33h 55m
Virgin Atlantic
Deal found 5/6$1,008
This Kiwi.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/103:50 pm
SFO
-
BFS
2 stops36h 25m
Multiple Airlines
Tue 5/262:45 pm
BFS
-
SFO
1 stop38h 05m
Multiple Airlines
Deal found 5/6$1,076
This Mytrip deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:00 am
SFO
-
BFS
3 stops31h 50m
Multiple Airlines
Fri 12/186:00 am
BFS
-
SFO
3 stops40h 45m
Multiple Airlines
Deal found 5/7$1,135
This Mytrip deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:10 am
SFO
-
BFS
3 stops30h 10m
Multiple Airlines
Tue 7/1411:30 pm
BFS
-
SFO
3 stops30h 25m
Multiple Airlines
Deal found 5/3$1,195
This Mytrip deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/216:00 am
SFO
-
BFS
3 stops23h 50m
Multiple Airlines
Sat 6/276:55 am
BFS
-
SFO
2 stops23h 00m
Multiple Airlines
Deal found 5/3$1,227
This Mytrip deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/216:00 am
SFO
-
BFS
3 stops23h 50m
Multiple Airlines
Sun 6/286:45 am
BFS
-
SFO
3 stops47h 10m
Multiple Airlines
Deal found 5/6$1,254

Find flight deals from San Francisco to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 7, 2026.

Round-trip from

$858
(Cheapflightsfares)

One-way from

$316
(oojo)

Popular in

June

Cheapest in

February

Average price

$808
From San Francisco to Belfast
Search Deals
One-way flight from San Francisco to Belfast
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($105 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Belfast 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, Cheapflights users made 2,558,603 searches. Data last updated May 7, 2026.
Use the filters below to find and compare flights from San Francisco to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 9/14

4:35 pm-3:30 pm

1 stop14h 55m

Belfast City

Wed 9/16

8:35 pm-1:50 pm

1 stop25h 15m

$876
Quickest round-trip

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 11/2

3:54 pm-4:05 pm

2 stops16h 11m

Belfast City

Fri 11/13

11:30 am-6:45 pm

1 stop15h 15m

$880

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 11/2

2:06 pm-4:05 pm

2 stops17h 59m

Belfast City

Fri 11/13

6:45 am-6:24 pm

2 stops19h 39m

$889

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 6/3

6:00 am-7:15 pm

2 stops29h 15m

Belfast Intl

Mon 6/8

9:15 am-5:05 pm

3 stops39h 50m

$997

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 7/22

1:45 pm-4:55 pm

1 stop19h 10m

Belfast City

Wed 7/29

9:50 am-11:52 pm

2 stops22h 02m

$1,112

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 7/22

5:07 pm-4:55 pm

2 stops15h 48m

Belfast City

Wed 7/29

9:50 am-11:52 pm

2 stops22h 02m

$1,117

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 9/11

6:00 am-9:50 pm

3 stops31h 50m

Belfast Intl

Fri 12/18

6:00 am-2:45 pm

3 stops40h 45m

$1,135

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 7/8

10:15 am-12:00 pm

2 stops17h 45m

Belfast City

Tue 7/14

1:45 pm-12:59 am

2 stops19h 14m

$1,164

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 6/3

10:20 am-3:40 pm

2 stops21h 20m

Belfast City

Mon 6/8

7:35 pm-5:36 pm

2 stops30h 01m

$1,173

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 7/1

6:00 am-9:20 am

2 stops19h 20m

Belfast City

Wed 7/8

9:50 am-9:59 pm

2 stops20h 09m

$1,262

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/7

Showing 1-10 of 26 resultsSorted by cheapest first
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2
3

Best time to book a flight from San Francisco to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Belfast

How much does it cost to fly round-trip from San Francisco to Belfast?

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast. Reviews last updated May 7, 2026.
Get a feel of what it's like to fly with British Airways from San Francisco to Belfast by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,949 reviews

Boarding

6.9

Overall

6.7

Entertainment

6.4

Crew

7.7

Comfort

6.8

Food

6.4

Reviews

1 / 20
10.0
Excellent

Viorica,Mar 2026

PHX - LHR

The food lately is just from poor to very poor. I bealeave that you can serve less quantities for more quality food. Exemple : at breakfast : omlete and vegetarian omlete ....I beleave with less work less personel could be provide some hummus and carrots and some boiled egss plus whatever snacks or drinks you wish....... Thank you in advance
British Airways
6.7
Okay
7,949 reviews
British Airways
6.7
Okay
7,949 reviews

Boarding

6.9

Overall

6.7

Entertainment

6.4

Crew

7.7

Comfort

6.8

Food

6.4

Reviews

1 / 20
10.0
Excellent

Viorica,Mar 2026

PHX - LHR

The food lately is just from poor to very poor. I bealeave that you can serve less quantities for more quality food. Exemple : at breakfast : omlete and vegetarian omlete ....I beleave with less work less personel could be provide some hummus and carrots and some boiled egss plus whatever snacks or drinks you wish....... Thank you in advance

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Francisco to Belfast?

    Most people fly from San Francisco (SFO) if they book a flight from San Francisco to Belfast. On average, San Francisco has 0 outbound flights to Belfast per day from 1 airline. San Francisco is conveniently located just 11.0 mi from San Francisco’s city center.

  • How long is the flight from San Francisco to Belfast?

    Departing from San Francisco to Belfast will take you 14h 55m. There are 5038 mi between San Francisco and Belfast. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from San Francisco to Belfast round-trip?

    Cheapflights users have booked flights from San Francisco to Belfast round-trip from $586. British Airways is 32% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from San Francisco to Belfast that include hotel bookings?

    Yes. In addition to deals on San Francisco to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Belfast.

  • Can I find deals for business class flights from San Francisco to Belfast?

    Yes. Cheapflights offers flight deals from San Francisco to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Francisco to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Belfast Intl flights
San Francisco to Belfast Intl flights

Top airline flying from San Francisco to Belfast

Discover the top airline that operate flights from San Francisco to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$586Average$869FlexibilityNo cancel feeOn-time70%

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