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$372+ 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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap 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 October 28, 2025.

Round-trip from

$639
(Cheapflightsfares)

One-way from

$372
(Kiwi.com)

Popular in

January

Cheapest in

April

Average price

$651
From San Francisco to Belfast
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One-way flight from San Francisco to Belfast
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Highest demand for flights based on searches. 16% potential increase in price ($176 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 28, 2025.

This Iberia deal was found by Cheapflights users on 10/28. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/78:00 amSFO - BHD
2 stops18h 20mMultiple Airlines
Sun 12/149:10 amBHD - SFO
1 stop13h 50mMultiple Airlines
Deal found 10/28$669
This Virgin Atlantic deal was found by Cheapflights users on 10/27. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/31:55 pmSFO - BHD
1 stop23h 05mVirgin Atlantic
Sun 12/76:30 amBHD - SFO
1 stop13h 20mVirgin Atlantic
Deal found 10/27$685
This Ovago deal was found by Cheapflights users on 10/26. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/611:59 pmSFO - BHD
2 stops32h 51mBritish Airways
Sun 12/149:10 amBHD - SFO
1 stop13h 50mBritish Airways
Deal found 10/26$698
This Mytrip deal was found by Cheapflights users on 10/25. 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 12/77:30 amSFO - BFS
3 stops29h 45mMultiple Airlines
Sun 12/145:45 amBFS - SFO
2 stops21h 50mMultiple Airlines
Deal found 10/25$700
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:00 amSFO - BHD
2 stops26h 50mDelta
Sat 11/226:30 amBHD - SFO
1 stop13h 20mDelta
Deal found 10/28$718
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/159:49 amSFO - BHD
2 stops23h 01mDelta
Sun 11/236:30 amBHD - SFO
2 stops19h 39mDelta
Deal found 10/28$728
This Mytrip deal was found by Cheapflights users on 10/26. 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.
Tue 12/91:00 pmSFO - BFS
2 stops24h 40mMultiple Airlines
Tue 12/168:35 amBFS - SFO
3 stops37h 55mMultiple Airlines
Deal found 10/26$750
This Mytrip deal was found by Cheapflights users on 10/26. 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.
Sat 12/68:25 amSFO - BFS
2 stops18h 30mMultiple Airlines
Sun 12/146:30 amBFS - SFO
2 stops22h 52mMultiple Airlines
Deal found 10/26$767
This Mytrip deal was found by Cheapflights users on 10/26. 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.
Sat 12/68:25 amSFO - BFS
2 stops18h 30mMultiple Airlines
Sat 12/139:40 amBFS - SFO
2 stops19h 42mMultiple Airlines
Deal found 10/26$774
This Mytrip deal was found by Cheapflights users on 10/27. 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.
Thu 10/303:40 pmSFO - BFS
2 stops23h 35mMultiple Airlines
Sat 11/17:35 amBFS - SFO
2 stops35h 30mMultiple Airlines
Deal found 10/27$1,320

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 October 28, 2025.
Use the filters below to find and compare flights from San Francisco to Belfast that are best for you.

Fly from

San Francisco

Fly to

Belfast

Route

Depart

Return

Price

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 3/24

9:40 pm-6:40 pm

1 stop14h 00m

Belfast City

Tue 3/31

6:35 am-5:40 pm

1 stop19h 05m

$639

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 3/24

10:24 am-11:30 am

2 stops18h 06m

Belfast City

Tue 3/31

6:35 am-6:42 pm

2 stops20h 07m

$657

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 12/7

8:00 am-10:20 am

2 stops18h 20m

Belfast City

Sun 12/14

9:10 am-3:00 pm

1 stop13h 50m

$669

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 12/3

1:55 pm-4:50 pm

1 stop18h 55m

Belfast City

Sun 12/7

6:30 am-11:50 am

1 stop13h 20m

$685

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 12/7

1:55 pm-9:00 pm

1 stop23h 05m

Belfast City

Sun 12/14

5:20 pm-11:50 am

1 stop26h 30m

$685

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 12/7

7:00 am-4:50 pm

2 stops25h 50m

Belfast City

Sun 12/14

8:25 pm-8:30 pm

2 stops32h 05m

$689

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 12/7

7:30 am-9:15 pm

3 stops29h 45m

Belfast Intl

Sun 12/14

5:45 am-7:35 pm

2 stops21h 50m

$700

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 12/9

1:00 pm-9:40 pm

2 stops24h 40m

Belfast Intl

Tue 12/16

8:35 am-2:30 pm

3 stops37h 55m

$750

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sat 12/6

8:25 am-10:55 am

2 stops18h 30m

Belfast Intl

Sat 12/13

9:40 am-9:22 pm

2 stops19h 42m

$774

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sat 12/6

10:15 am-7:55 pm

3 stops25h 40m

Belfast Intl

Sun 12/14

7:10 am-2:35 pm

3 stops39h 25m

$827

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 33 results
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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

What is the cheapest month to book a flight from San Francisco to Belfast?

Currently, April is the cheapest month in which you can book a flight from San Francisco to Belfast (average of $587). Flying from San Francisco to Belfast in January is currently the most expensive (average of $1,339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to BFS?

Find hourly flight availability from San Francisco to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

It’s optimal to fly from San Francisco to Belfast at noon. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight in the morning.

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 October 28, 2025.
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
7,483 reviews

Boarding

6.9

Comfort

6.7

Crew

7.6

Entertainment

6.4

Food

6.3

Overall

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,483 reviews
British Airways
6.7
Okay
7,483 reviews

Boarding

6.9

Comfort

6.7

Crew

7.6

Entertainment

6.4

Food

6.3

Overall

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

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 11.8 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. 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 $621. British Airways is 29% 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.

  • What is the cheapest month to book a flight from San Francisco to Belfast?

    Currently, April is the cheapest month in which you can book a flight from San Francisco to Belfast (average of $587). Flying from San Francisco to Belfast in January is currently the most expensive (average of $1,339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$621Average$767FlexibilityNo cancel feeOn-time70%

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