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Cheap flights from San Francisco Bay Area to Belfast Intl Airport from £535

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BFS
1 Sep — 8 Sep1
1 adult

Cheap flight deals from San Francisco Bay Area to Belfast Intl

Keep the following information in mind while searching for San Francisco Bay Area to Belfast Intl flight deals. Data was last updated 27 August 2025.

Round-trip from

£535

Popular in

January

Cheapest in

October

Average price

£574
7/10-14/10
  • 7/10-14/10
  • 6 total stops
  • 60h 05m total
  • San Francisco Bay Area to Belfast
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£88 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from San Francisco Bay Area to Belfast Intl

Cheapest flights from San Francisco Bay Area to Belfast Intl
Explore the most affordable flight options available from San Francisco Bay Area to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2025.

Tue 7/1016:20SFO - BFS
3 stops20h 55mMultiple Airlines
Tue 14/1007:25BFS - SFO
3 stops39h 10mMultiple Airlines
Deal found 24/8£535
Thu 18/1217:30SFO - BFS
1 stop16h 05mMultiple Airlines
Tue 6/105:45BFS - SFO
2 stops41h 25mMultiple Airlines
Deal found 24/8£1,047
Mon 8/906:35SJC - BFS
3 stops25h 15mMultiple Airlines
Thu 11/907:10BFS - SJC
3 stops20h 03mMultiple Airlines
Deal found 26/8£2,686
Sun 7/906:35SJC - BFS
3 stops25h 05mMultiple Airlines
Wed 10/916:35BFS - SJC
3 stops34h 38mMultiple Airlines
Deal found 24/8£2,704

Cheapflights Fare Finder

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

Fly from

San Francisco Bay Area

Fly to

Belfast Intl

Route

Depart

Return

Price

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 7/10

16:20-21:15

3 stops20h 55m

Belfast Intl

Tue 14/10

07:25-14:35

3 stops39h 10m

£535

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 18/12

17:30-17:35

1 stop16h 05m

Belfast Intl

Tue 6/1

05:45-15:10

2 stops41h 25m

£1,047

San JoseBelfast

SJC - BFS

SJCBFS

San Jose

Mon 8/9

06:35-15:50

3 stops25h 15m

Belfast Intl

Thu 11/9

07:10-19:13

3 stops20h 03m

£2,686

San JoseBelfast

SJC - BFS

SJCBFS

San Jose

Sun 7/9

06:35-15:40

3 stops25h 05m

Belfast Intl

Wed 10/9

16:35-19:13

3 stops34h 38m

£2,704

Flights are sorted by cheapest return flights first.

Deals found on 24/8

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

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl 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 Intl Airport

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

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

Related info for your journey

Find useful and relevant information for your journey from San Francisco Bay Area to Belfast Intl. 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 Intl Airport?

    The most popular flight routes from San Francisco Bay Area to Belfast Intl Airport are San Francisco - Belfast Intl, San Jose - Belfast Intl and Oakland - Belfast Intl.

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

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

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

    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 Intl.

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

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

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

Travelling to a place near Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Armagh
Newry
Ballymena
Cookstown
Dungannon

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Alternative routes for San Francisco Bay Area to Belfast Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Los Angeles to Belfast City flights
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How does Cheapflights help users find flights from San Francisco Bay Area to Belfast Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from San Francisco Bay Area to Belfast Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Belfast Intl from San Francisco Bay Area.

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

Need flexible booking options for your flight to Belfast Intl from San Francisco Bay Area? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on San Francisco Bay Area to Belfast Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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