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$522+ 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 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Round-trip from

$705
(oojo)

One-way from

$522
(Kiwi.com)

Popular in

January

Cheapest in

October

Average price

$706
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. 13% potential increase in price ($151 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 March 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 March 31, 2025.

This oojo deal was found by Cheapflights users on 3/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/87:30 pmSFO - BHD
1 stop15h 55mBritish Airways
Tue 4/156:15 pmBHD - SFO
1 stop27h 35mBritish Airways
Deal found 3/29$666
This Iberia deal was found by Cheapflights users on 3/29. 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.
Wed 9/37:20 pmSFO - BHD
1 stop15h 20mIberia
Fri 9/126:35 amBHD - SFO
1 stop18h 50mIberia
Deal found 3/29$707
This American Airlines deal was found by Cheapflights users on 3/29. 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.
Wed 9/311:35 amSFO - BHD
2 stops17h 55mAmerican Airlines
Fri 9/126:35 amBHD - SFO
1 stop18h 50mAmerican Airlines
Deal found 3/29$712
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/14:20 pmSFO - BFS
1 stop17h 55mMultiple Airlines
Mon 5/129:55 pmBFS - SFO
2 stops47h 20mMultiple Airlines
Deal found 3/30$878
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.
Thu 5/18:35 amSFO - BHD
2 stops22h 35mMultiple Airlines
Mon 5/126:55 amBHD - SFO
3 stops43h 45mMultiple Airlines
Deal found 3/30$1,068

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 March 31, 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

Sat 5/3

11:59 pm-11:30 am

2 stops27h 31m

Belfast City

Sat 5/10

7:00 pm-5:35 pm

2 stops30h 35m

$705

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 9/3

7:20 pm-6:40 pm

1 stop15h 20m

Belfast City

Fri 9/12

6:35 am-5:25 pm

1 stop18h 50m

$707

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 9/3

11:35 am-1:30 pm

2 stops17h 55m

Belfast City

Fri 9/12

6:35 am-5:25 pm

1 stop18h 50m

$712

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 5/3

4:20 pm-5:15 pm

1 stop16h 55m

Belfast City

Sat 5/10

7:05 am-1:50 pm

1 stop14h 45m

$720

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 5/1

4:20 pm-6:15 pm

1 stop17h 55m

Belfast Intl

Mon 5/12

9:55 pm-1:15 pm

2 stops47h 20m

$878

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 5/23

5:45 am-10:30 pm

3 stops56h 45m

$522

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Fri 5/23

6:39 pm-8:10 am

3 stops53h 31m

$528

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 6/15

7:20 pm-6:45 pm

1 stop15h 25m

$714

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

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 March 31, 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 March 31, 2025.
American Airlines
7.2
Good
10,000 reviews

Entertainment

6.9

Food

6.5

Overall

7.2

Boarding

7.5

Crew

8.0

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2024

LAX - ORD

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Entertainment

6.9

Food

6.5

Overall

7.2

Boarding

7.5

Crew

8.0

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2024

LAX - ORD

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap
Iberia
7.0
Good
2,653 reviews
American Airlines
7.2
Good
10,000 reviews

Entertainment

6.9

Food

6.5

Overall

7.2

Boarding

7.5

Crew

8.0

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2024

LAX - ORD

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap
British Airways
6.6
Okay
6,713 reviews
American Airlines
7.2
Good
10,000 reviews

Entertainment

6.9

Food

6.5

Overall

7.2

Boarding

7.5

Crew

8.0

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2024

LAX - ORD

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap

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 $705. Other airlines that can offer you cheap pricing are Iberia, from $707, and American Airlines, from $712. British Airways is 26% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$493Average$901FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$596Average$802FlexibilityNo cancel feeOn-time70%
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