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$302+ 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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
Apr 29 — May 61
Tue 4/29
Tue 5/6
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 April 24, 2025.

Round-trip from

$690
(oojo)

One-way from

$302
(Kiwi.com)

Popular in

January

Cheapest in

October

Average price

$672
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. 14% potential increase in price ($156 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 24, 2025.

This Expedia deal was found by Cheapflights users on 4/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/58:40 pmSFO - BHD
1 stop14h 30mBritish Airways
Mon 11/107:30 pmBHD - SFO
1 stop27h 30mBritish Airways
Deal found 4/22$668
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Fri 5/95:49 pmSFO - BHD
2 stops18h 56mAmerican Airlines
Tue 5/136:35 amBHD - SFO
1 stop18h 40mAmerican Airlines
Deal found 4/23$699
This Trip.com deal was found by Cheapflights users on 4/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/910:45 pmSFO - BFS
2 stops27h 25mMultiple Airlines
Tue 5/136:45 amBFS - SFO
2 stops37h 00mMultiple Airlines
Deal found 4/23$771
This Delta deal was found by Cheapflights users on 4/23. 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.
Wed 7/95:15 pmSFO - BHD
2 stops20h 00mDelta
Sat 7/196:30 amBHD - SFO
2 stops20h 24mDelta
Deal found 4/23$1,280
This Virgin Atlantic deal was found by Cheapflights users on 4/23. 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 7/91:45 pmSFO - BHD
1 stop23h 30mVirgin Atlantic
Sat 7/196:30 amBHD - SFO
2 stops19h 17mVirgin Atlantic
Deal found 4/23$1,362
This Gurufare deal was found by Cheapflights users on 4/23. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/94:35 pmSFO - BHD
1 stop15h 00mMultiple Airlines
Sat 7/194:15 pmBHD - SFO
1 stop29h 35mMultiple Airlines
Deal found 4/23$1,379
This KLM deal was found by Cheapflights users on 4/23. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/91:45 pmSFO - BHD
1 stop23h 30mKLM
Fri 7/185:25 pmBHD - SFO
1 stop26h 20mKLM
Deal found 4/23$1,454

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 April 24, 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

Fri 5/9

2:17 pm-6:15 pm

2 stops19h 58m

Belfast City

Tue 5/13

4:25 pm-12:06 am

2 stops39h 41m

$690

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Fri 5/9

5:49 pm-8:45 pm

2 stops18h 56m

Belfast City

Tue 5/13

6:35 am-5:15 pm

1 stop18h 40m

$699

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 5/9

10:45 pm-10:10 am

2 stops27h 25m

Belfast Intl

Tue 5/13

6:45 am-11:45 am

2 stops37h 00m

$771

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 7/9

5:15 pm-9:15 pm

2 stops20h 00m

Belfast City

Sat 7/19

6:30 am-6:54 pm

2 stops20h 24m

$1,280

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 7/9

1:45 pm-9:15 pm

1 stop23h 30m

Belfast City

Sat 7/19

6:30 am-5:47 pm

2 stops19h 17m

$1,362

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 7/9

4:35 pm-3:35 pm

1 stop15h 00m

Belfast City

Sat 7/19

4:15 pm-1:50 pm

1 stop29h 35m

$1,379

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 7/9

1:45 pm-9:15 pm

1 stop23h 30m

Belfast City

Fri 7/18

5:25 pm-11:45 am

1 stop26h 20m

$1,454

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 7/23

11:20 am-8:35 pm

2 stops25h 15m

$302

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 7/23

11:20 am-3:05 pm

2 stops19h 45m

$337

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 7/21

7:20 pm-5:30 pm

1 stop14h 10m

$403

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 14 results
1
2

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, February is the cheapest month in which you can book a flight from San Francisco to Belfast (average of $657). Flying from San Francisco to Belfast in June is currently the most expensive (average of $1,189). 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 April 24, 2025.

It’s optimal to fly from San Francisco to Belfast in the afternoon. By choosing this option you can save up to 37% on the cost of your flight, compared to a flight in the morning.

Rainfall in Belfast by month

Plan your trip to Belfast by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Belfast ranges from 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Belfast when rainfall is around 2.0 in.

Temperature in Belfast by month

Plan your trip to Belfast by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Belfast, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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 April 24, 2025.
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Iberia
7.0
Good
2,684 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 2 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

  • What are the cheapest airlines flying from San Francisco to Belfast round-trip?

    Cheapflights users have booked flights from San Francisco to Belfast round-trip from $690. Other airlines that can offer you cheap pricing are American Airlines, from $699, and Delta, from $1,280. British Airways is 27% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from San Francisco to Belfast one-way?

    $403 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Delta and KLM, with prices starting from $565 and $3,804, respectively.

  • 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, February is the cheapest month in which you can book a flight from San Francisco to Belfast (average of $657). Flying from San Francisco to Belfast in June is currently the most expensive (average of $1,189). 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 2 airlines flying from San Francisco to Belfast

Discover the top 2 airlines 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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$493Average$900FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$596Average$807FlexibilityNo cancel feeOn-time70%

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