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$314+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SFO
jul 23 — jul 301
qua 7/23
qua 7/30
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 julho 18, 2025.

Round-trip from

$770
(Delta)

One-way from

$314
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$972
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. 2% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julho 18, 2025.

This Delta deal was found by Cheapflights users on 7/17. 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.
qua 8/206:30 amBHD - SFO
2 stops18h 47mDelta
sex 9/511:35 amSFO - BHD
2 stops21h 20mDelta
Deal found 7/17$770
This TravelUp deal was found by Cheapflights users on 7/17. 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.
qui 8/146:35 amBHD - SFO
1 stop18h 50mMultiple Airlines
qui 8/214:30 pmSFO - BHD
1 stop20h 15mMultiple Airlines
Deal found 7/17$793
This KLM deal was found by Cheapflights users on 7/17. 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.
qui 8/145:25 pmBHD - SFO
1 stop26h 20mKLM
qui 8/211:45 pmSFO - BHD
1 stop23h 20mKLM
Deal found 7/17$840
This Trip.com deal was found by Cheapflights users on 7/17. 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.
qui 8/146:35 amBFS - SFO
1 stop20h 55mMultiple Airlines
qui 8/214:05 pmSFO - BFS
1 stop23h 20mMultiple Airlines
Deal found 7/17$893

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 julho 18, 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

qua 8/20

6:30 am-5:17 pm

2 stops18h 47m

San Francisco

sex 9/5

11:35 am-4:55 pm

2 stops21h 20m

$770

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

qui 8/14

6:35 am-5:25 pm

1 stop18h 50m

San Francisco

qui 8/21

4:30 pm-8:45 pm

1 stop20h 15m

$793

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

qui 8/14

5:25 pm-11:45 am

1 stop26h 20m

San Francisco

qui 8/21

1:45 pm-9:05 pm

1 stop23h 20m

$840

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

qui 8/14

6:35 am-7:30 pm

1 stop20h 55m

San Francisco

qui 8/21

4:05 pm-11:25 pm

1 stop23h 20m

$893

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

seg 9/15

9:00 pm-6:10 pm

2 stops29h 10m

$314

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

seg 9/15

9:50 am-6:10 pm

2 stops40h 20m

$338

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

seg 8/4

7:30 pm-5:25 pm

1 stop29h 55m

$1,129

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

sex 8/22

6:30 am-11:45 am

1 stop13h 15m

$11,009

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/17

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
No data available for this route at this time. Please check back soon.

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 julho 18, 2025.
Read reviews from past customers who have flown Delta, KLM, and British Airways from Belfast to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,958 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

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
7,958 reviews
Delta
8.0
Very good
7,958 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

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
1,374 reviews
Delta
8.0
Very good
7,958 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

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
British Airways
6.6
Okay
7,151 reviews
Delta
8.0
Very good
7,958 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.2

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 $770. Another airline that can offer you cheap pricing is KLM.

  • 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 $358). 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 San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
Mountain View
Santa Cruz
South San Francisco
Livermore
Turlock
Manteca
Antioch
Hollister
Watsonville
Newark
Milpitas
Sunnyvale
Campbell
Lathrop
Daly City
Foster City
Capitola
Santa Clara
Richmond

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