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$455+ 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SFO
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
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 April 1, 2025.

Round-trip from

$668
(British Airways)

One-way from

$455
(Mytrip)

Popular in

August

Cheapest in

November

Average price

$629
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. 14% potential increase in price ($136 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($33 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 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 April 1, 2025.

This Expedia deal was found by Cheapflights users on 3/30. 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.
Sun 4/278:05 pmBHD - SFO
1 stop25h 45mBritish Airways
Sun 5/44:20 pmSFO - BHD
1 stop14h 20mBritish Airways
Deal found 3/30$521
This TravelUp deal was found by Cheapflights users on 3/30. 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.
Sun 4/2711:00 amBHD - SFO
2 stops18h 14mMultiple Airlines
Sun 5/42:27 pmSFO - BHD
2 stops19h 18mMultiple Airlines
Deal found 3/30$646
This KLM deal was found by Cheapflights users on 3/30. 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 4/235:25 pmBHD - SFO
1 stop26h 20mKLM
Mon 4/281:45 pmSFO - BHD
1 stop23h 30mKLM
Deal found 3/30$680
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Tue 4/226:35 amBHD - SFO
1 stop15h 15mAmerican Airlines
Tue 4/291:07 pmSFO - BHD
2 stops18h 13mAmerican Airlines
Deal found 3/31$692
This Finnair deal was found by Cheapflights users on 3/30. 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.
Fri 4/258:05 pmBHD - SFO
2 stops35h 04mFinnair
Mon 4/2810:40 amSFO - BHD
2 stops37h 05mFinnair
Deal found 3/30$694
This Delta deal was found by Cheapflights users on 3/31. 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.
Tue 4/86:30 amBHD - SFO
1 stop13h 15mDelta
Sun 4/271:45 pmSFO - BHD
1 stop23h 30mDelta
Deal found 3/31$725
This Iberia deal was found by Cheapflights users on 3/30. 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.
Thu 4/246:35 amBHD - SFO
2 stops24h 01mIberia
Fri 5/21:07 pmSFO - BHD
2 stops21h 08mIberia
Deal found 3/30$736
This Trip.com deal was found by Cheapflights users on 3/30. 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.
Sun 4/277:00 amBFS - SFO
2 stops36h 45mMultiple Airlines
Sun 5/49:20 pmSFO - BFS
1 stop17h 50mMultiple Airlines
Deal found 3/30$759
This Mytrip deal was found by Cheapflights users on 3/30. 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 4/272:40 pmBHD - SFO
2 stops33h 15mAer Lingus
Sun 5/45:02 amSFO - BHD
3 stops29h 18mAer Lingus
Deal found 3/30$1,520

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 April 1, 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

Tue 4/22

6:35 am-1:50 pm

1 stop15h 15m

San Francisco

Tue 4/29

7:30 pm-7:25 pm

1 stop15h 55m

$668

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 4/23

5:25 pm-11:45 am

1 stop26h 20m

San Francisco

Mon 4/28

1:45 pm-9:15 pm

1 stop23h 30m

$680

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Tue 4/22

6:35 am-1:50 pm

1 stop15h 15m

San Francisco

Tue 4/29

1:07 pm-3:20 pm

2 stops18h 13m

$692

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Tue 4/22

8:20 pm-1:50 pm

1 stop25h 30m

San Francisco

Tue 4/29

5:29 pm-7:25 pm

2 stops17h 56m

$693

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 4/24

6:35 am-12:10 am

2 stops25h 35m

San Francisco

Fri 5/2

1:07 pm-6:15 pm

2 stops21h 08m

$736

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 4/21

6:30 am-11:45 am

1 stop13h 15m

San Francisco

Mon 4/28

1:45 pm-4:55 pm

2 stops19h 10m

$752

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sun 4/27

7:00 am-11:45 am

2 stops36h 45m

San Francisco

Sun 5/4

9:20 pm-11:10 pm

1 stop17h 50m

$759

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sat 4/19

6:55 am-3:55 pm

2 stops17h 00m

San Francisco

Sun 4/27

4:20 pm-2:40 pm

1 stop14h 20m

$2,290

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sun 6/1

6:50 pm-5:15 pm

2 stops30h 25m

$455

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 8/1

4:40 pm-5:15 pm

3 stops32h 35m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 11 results
1
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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 $393). 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 April 1, 2025.
Read through reviews of airlines operating flights from Belfast to San Francisco, such as Delta, KLM and American Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.3

Comfort

8.0

Entertainment

7.9

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
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.3

Comfort

8.0

Entertainment

7.9

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
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.3

Comfort

8.0

Entertainment

7.9

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
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.3

Comfort

8.0

Entertainment

7.9

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
Aer Lingus
7.0
Good
1,061 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.3

Comfort

8.0

Entertainment

7.9

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
Iberia
7.0
Good
2,653 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.3

Comfort

8.0

Entertainment

7.9

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 $668. Other airlines that can offer you cheap pricing are KLM, from $680, and American Airlines, from $692. British Airways is 16% 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 $393). 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
Santa Cruz
Turlock
Fairfield
South San Francisco
Manteca
Sausalito
Richmond
Watsonville
Hollister
Milpitas
Antioch
Hayward
Vallejo
Newark
Alameda
Sunnyvale
Campbell
Daly City

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