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$589+ Cheap flights from Belfast to San Francisco (SFO)

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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SFO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Belfast to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Belfast (BF1) to San Francisco (SFO). 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 June 12, 2025.

Round-trip from

$603
(Expedia)

One-way from

$589
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$883
From Belfast to San Francisco
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One-way flight from Belfast to San Francisco
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Highest demand for flights based on searches. 4% potential increase in price ($35 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Belfast to San Francisco

Cheapest flights from Belfast to San Francisco
Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Expedia deal was found by Cheapflights users on 6/10. 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.
Fri 9/127:30 pmBHD - SFO
1 stop26h 20mBritish Airways
Fri 9/1910:30 pmSFO - BHD
2 stops27h 40mBritish Airways
Deal found 6/10$603
This Expedia deal was found by Cheapflights users on 6/10. 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.
Fri 9/128:05 pmBHD - SFO
2 stops30h 30mMultiple Airlines
Fri 9/1910:30 pmSFO - BHD
2 stops27h 40mMultiple Airlines
Deal found 6/10$680
This TravelUp deal was found by Cheapflights users on 6/10. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:30 amBHD - SFO
1 stop13h 15mKLM
Fri 9/191:45 pmSFO - BHD
1 stop23h 30mKLM
Deal found 6/10$709
This Delta deal was found by Cheapflights users on 6/12. 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 8/206:30 amBHD - SFO
2 stops19h 29mDelta
Fri 9/51:45 pmSFO - BHD
1 stop23h 30mDelta
Deal found 6/12$747
This Trip.com deal was found by Cheapflights users on 6/10. 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 9/126:05 amBFS - SFO
1 stop21h 25mMultiple Airlines
Fri 9/194:05 pmSFO - BFS
1 stop33h 20mMultiple Airlines
Deal found 6/10$770
This Finnair deal was found by Cheapflights users on 6/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/204:05 pmBHD - SFO
2 stops38h 52mFinnair
Fri 9/510:22 amSFO - BHD
2 stops39h 48mFinnair
Deal found 6/10$778

Cheapflights Fare Finder

Customize your flight search to find flights from Belfast 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Belfast to San Francisco that are best for you.

Fly from

Belfast

Fly to

San Francisco

Route

Depart

Return

Price

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 9/12

7:30 pm-1:50 pm

1 stop26h 20m

San Francisco

Fri 9/19

10:30 pm-10:10 am

2 stops27h 40m

$603

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 9/12

8:05 pm-6:35 pm

2 stops30h 30m

San Francisco

Fri 9/19

10:30 pm-10:10 am

2 stops27h 40m

$680

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 9/12

6:30 am-11:45 am

1 stop13h 15m

San Francisco

Fri 9/19

1:45 pm-9:15 pm

1 stop23h 30m

$709

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 8/20

6:30 am-5:59 pm

2 stops19h 29m

San Francisco

Fri 9/5

1:45 pm-9:15 pm

1 stop23h 30m

$747

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 9/12

6:05 am-7:30 pm

1 stop21h 25m

San Francisco

Fri 9/19

4:05 pm-9:25 am

1 stop33h 20m

$770

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 8/20

4:05 pm-10:57 pm

2 stops38h 52m

San Francisco

Fri 9/5

10:22 am-10:10 am

2 stops39h 48m

$778

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sun 7/20

10:55 pm-9:30 am

3 stops42h 35m

$589

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sun 7/20

6:50 pm-9:25 pm

2 stops34h 35m

$724

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 7/21

6:25 pm-8:55 pm

2 stops34h 30m

$983

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 7/21

5:25 pm-11:45 am

1 stop26h 20m

$1,876

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Best time to book a flight from Belfast to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Belfast 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 Belfast to San Francisco

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

Currently, January is the cheapest month in which you can book a flight from Belfast to San Francisco (average of $276). Flying from Belfast to San Francisco in June is currently the most expensive (average of $364). 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.

Rainfall in San Francisco by month

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

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

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

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated June 12, 2025.
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.6
Okay
7,008 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Belfast to San Francisco. 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 into for flights to San Francisco from Belfast?

    San Francisco (SFO), located 11.8 mi from the city center, is the airport you fly into when you book flights from Belfast to San Francisco. 0 airlines have flights to San Francisco from Belfast on a regular basis. Booking flights from Belfast to San Francisco should not be difficult; the airport handles an average of 0 inbound flights from Belfast per day.

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

    Cheapflights users have booked flights from Belfast to San Francisco round-trip from $603. Other airlines that can offer you cheap pricing are KLM, from $709, and Delta, from $747. British Airways is 20% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast to San Francisco 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 Belfast to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Belfast to San Francisco (average of $276). Flying from Belfast to San Francisco in June is currently the most expensive (average of $364). 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

Traveling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Roseville
Mountain View
South San Francisco
Livermore
Turlock
Santa Cruz
Manteca
Fairfield
Watsonville
Antioch
Hollister
Milpitas
Newark
Hayward
Alameda
Sunnyvale
Daly City
Union City
Campbell
Capitola

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