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Cheap flights from San Francisco to Belfast from £217

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 25/7. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
2 Jul — 9 Jul1
1 adult

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 27 June 2025.

Round-trip from

£458

One-way from

£217

Popular in

January

Cheapest in

October

Average price

£838
American Airlines
  • American Airlines
  • 23/9-30/9
  • 2 total stops
  • 44h 15m total
  • San Francisco to Belfast
25/7
  • 25/7
  • 2 total stops
  • 56h 07m total
  • San Francisco to Belfast
Highest demand for flights based on searches. 13% potential increase in price (£73 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Average for round-trip flights in June 2025

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 27 June 2025.

Tue 23/916:30SFO - BHD
1 stop14h 50mAmerican Airlines
Tue 30/916:25BHD - SFO
1 stop29h 25mAmerican Airlines
Deal found 25/6£458
Wed 15/1019:20SFO - BHD
1 stop15h 20mBritish Airways
Tue 21/1006:35BHD - SFO
1 stop15h 15mBritish Airways
Deal found 25/6£460
Tue 23/916:52SFO - BHD
2 stops16h 38mMultiple Airlines
Tue 30/913:40BHD - SFO
2 stops18h 19mMultiple Airlines
Deal found 25/6£468
Wed 24/913:45SFO - BHD
1 stop23h 30mKLM
Wed 1/1006:30BHD - SFO
1 stop13h 15mKLM
Deal found 24/6£514
Wed 24/913:00SFO - BHD
2 stops19h 55mDelta
Tue 30/917:25BHD - SFO
1 stop26h 20mDelta
Deal found 24/6£517
Wed 3/1210:00SFO - BHD
2 stops27h 00mVirgin Atlantic
Sun 7/1217:20BHD - SFO
2 stops31h 02mVirgin Atlantic
Deal found 24/6£619
Sun 10/817:45SFO - BFS
2 stops21h 35mMultiple Airlines
Sun 17/806:45BFS - SFO
2 stops17h 10mMultiple Airlines
Deal found 26/6£643
Thu 10/708:00SFO - BHD
2 stops19h 10mFinnair
Mon 21/719:30BHD - SFO
2 stops36h 27mFinnair
Deal found 26/6£1,212

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 27 June 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 23/9

16:30-15:20

1 stop14h 50m

Belfast City

Tue 30/9

16:25-13:50

1 stop29h 25m

£458

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 15/10

19:20-18:40

1 stop15h 20m

Belfast City

Tue 21/10

06:35-13:50

1 stop15h 15m

£460

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 23/9

16:52-17:30

2 stops16h 38m

Belfast City

Tue 30/9

13:40-23:59

2 stops18h 19m

£468

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 24/9

13:45-21:15

1 stop23h 30m

Belfast City

Wed 1/10

06:30-11:45

1 stop13h 15m

£514

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 24/9

13:59-21:15

2 stops23h 16m

Belfast City

Wed 1/10

06:30-11:45

1 stop13h 15m

£517

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 3/12

10:00-21:00

2 stops27h 00m

Belfast City

Sun 7/12

17:20-16:22

2 stops31h 02m

£619

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 10/8

17:45-23:20

2 stops21h 35m

Belfast Intl

Sun 17/8

06:45-15:55

2 stops17h 10m

£643

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 10/7

08:00-11:10

2 stops19h 10m

Belfast City

Mon 21/7

19:30-23:57

2 stops36h 27m

£1,212

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Fri 25/7

16:03-08:10

2 stops56h 07m

£217

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 25/7

16:03-09:45

2 stops57h 42m

£220

Flights are sorted by cheapest return flights first.

Deals found on 25/6

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 return 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, January is the cheapest month in which you can book a flight from San Francisco to Belfast (average of £67). Flying from San Francisco to Belfast in July is currently the most expensive (average of £90). 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.

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 27 June 2025.
See what other customers who have flown with Delta, KLM, andFinnair from San Francisco to Belfast have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

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.
8.0
Very Good

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

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.

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

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.

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

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.

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

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.

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

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?

    If you book a flight to Belfast from San Francisco, you will be flying from San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.8 mi from the center of San Francisco. There are 0 flights from San Francisco to Belfast per day from 0 different airlines.

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

    Currently priced at £458, American Airlines will fly you from San Francisco to Belfast and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from British Airways and KLM - these airlines can fly you to your destination from £460 and £514, respectively. American Airlines is 31% 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?

    The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as £288. However, be on the lookout for offers from KLM and Delta, as they are both options that can get you from San Francisco to Belfast for a low price.

  • 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 holiday 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, January is the cheapest month in which you can book a flight from San Francisco to Belfast (average of £67). Flying from San Francisco to Belfast in July is currently the most expensive (average of £90). 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

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Alternative routes for San Francisco to Belfast

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

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How does Cheapflights help users find flights from San Francisco to Belfast?

Deals for San Francisco to Belfast flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Belfast?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from San Francisco to Belfast.

Can Cheapflights find flights from San Francisco to Belfast with no change fees?

Yes, we can. To see specific flights from San Francisco to Belfast with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from San Francisco to Belfast become cheaper?

Of course! You can now track prices for flights from San Francisco to Belfast and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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