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Cheap flights from San Francisco Bay Area to Belfast from £275

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 22/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
15 Apr — 22 Apr1
1 adult

Cheap flight deals from San Francisco Bay Area to Belfast

Keep the following information in mind while searching for San Francisco Bay Area to Belfast flight deals. Data was last updated 10 April 2025.

Round-trip from

£496

One-way from

£275

Popular in

January

Cheapest in

October

Average price

£525
British Airways
  • British Airways
  • 22/9-29/9
  • 2 total stops
  • 42h 25m total
  • San Francisco Bay Area to Belfast
Search Deals
22/5
  • 22/5
  • 3 total stops
  • 56h 30m total
  • San Francisco Bay Area to Belfast
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£88 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from San Francisco Bay Area to Belfast

Cheapest flights from San Francisco Bay Area to Belfast
Explore the most affordable flight options available from San Francisco Bay Area to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 April 2025.

Mon 22/916:35SFO - BHD
1 stop15h 05mBritish Airways
Mon 29/918:30BHD - SFO
1 stop27h 20mBritish Airways
Deal found 9/4£496
Sat 3/516:20SFO - BHD
1 stop14h 45mAmerican Airlines
Sat 10/509:35BHD - SFO
1 stop15h 40mAmerican Airlines
Deal found 10/4£560
Sat 24/508:15SFO - BFS
3 stops30h 15mMultiple Airlines
Sat 31/505:45BFS - SFO
3 stops35h 45mMultiple Airlines
Deal found 9/4£787
Mon 7/719:20SFO - BHD
1 stop14h 10mMultiple Airlines
Sat 19/716:15BHD - SFO
1 stop29h 35mMultiple Airlines
Deal found 9/4£870
Wed 23/407:00SJC - BFS
3 stops31h 25mMultiple Airlines
Sat 26/409:40BFS - SJC
3 stops41h 17mMultiple Airlines
Deal found 9/4£1,729

Cheapflights Fare Finder

Customise your flight search to find flights from San Francisco Bay Area 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 10 April 2025.
Use the filters below to find and compare flights from San Francisco Bay Area to Belfast that are best for you.

Fly from

San Francisco Bay Area

Fly to

Belfast

Route

Depart

Return

Price

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 22/9

16:35-15:40

1 stop15h 05m

Belfast City

Mon 29/9

18:30-13:50

1 stop27h 20m

£496

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 3/5

16:20-15:05

1 stop14h 45m

Belfast City

Sat 10/5

09:35-17:15

1 stop15h 40m

£560

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sat 24/5

08:15-22:30

3 stops30h 15m

Belfast Intl

Sat 31/5

05:45-09:30

3 stops35h 45m

£787

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 7/7

19:20-17:30

1 stop14h 10m

Belfast City

Sat 19/7

16:15-13:50

1 stop29h 35m

£870

San JoseBelfast

SJC - BFS

SJCBFS

San Jose

Wed 23/4

07:00-22:25

3 stops31h 25m

Belfast Intl

Sat 26/4

09:40-18:57

3 stops41h 17m

£1,729

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 22/5

14:45-07:15

3 stops56h 30m

£275

Flights are sorted by cheapest return flights first.

Deals found on 9/4

Best time to book a flight from San Francisco Bay Area to Belfast

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

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

Currently, January is the cheapest month in which you can book a flight from San Francisco Bay Area to Belfast (average of £67). Flying from San Francisco Bay Area 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.

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 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast when rainfall is around 50.0 mm.

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 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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 10 April 2025.
American Airlines
7.2
Good
10,000 reviews
Check prices

Entertainment

6.9

Boarding

7.5

Comfort

7.2

Crew

8.0

Overall

7.2

Food

6.5

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
Check prices

Entertainment

6.9

Boarding

7.5

Comfort

7.2

Crew

8.0

Overall

7.2

Food

6.5

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
6,735 reviews
American Airlines
7.2
Good
10,000 reviews
Check prices

Entertainment

6.9

Boarding

7.5

Comfort

7.2

Crew

8.0

Overall

7.2

Food

6.5

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 Bay Area to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the most popular routes from San Francisco Bay Area to Belfast?

    When deciding which route to take from San Francisco Bay Area to Belfast consider San Francisco - Belfast Intl, San Francisco - Belfast City or San Jose - Belfast Intl as they are the most popular.

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

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

  • How can I find direct flights from San Francisco Bay Area 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 Bay Area to Belfast.

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

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

    Currently, January is the cheapest month in which you can book a flight from San Francisco Bay Area to Belfast (average of £67). Flying from San Francisco Bay Area 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Francisco Bay Area to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to Belfast Intl flights
San Francisco to Belfast City flights
Los Angeles to Belfast Intl flights
Los Angeles to Belfast City flights

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Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco Bay Area to Belfast flexibly with Cheapflights today.

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