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Cheap flights from Belfast to Fremont from £428

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 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SFO
12 Oct — 19 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Belfast to Fremont

Keep the following information in mind while searching for Belfast to Fremont flight deals. Data was last updated 12 September 2025.

Round-trip from

£470

One-way from

£428

Popular in

July

Cheapest in

September

Average price

£441
American Airlines
  • American Airlines
  • 5/3-9/3
  • 2 total stops
  • 37h 15m total
  • Belfast to Fremont
Search Deals
Aer Lingus
  • Aer Lingus
  • 17/9
  • 2 total stops
  • 29h 05m total
  • Belfast to Fremont
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£45 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Belfast to Fremont

Cheapest flights from Belfast to Fremont
Explore the most affordable flight options available from Belfast to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Thu 9/1006:30BHD - SFO
1 stop13h 15mDelta
Thu 16/1010:35SFO - BHD
2 stops22h 20mDelta
Deal found 11/9£474
Sat 25/1009:15BFS - SFO
2 stops34h 50mMultiple Airlines
Sat 1/1108:25SFO - BFS
3 stops30h 15mMultiple Airlines
Deal found 10/9£985

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast to Fremont 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 12 September 2025.
Use the filters below to find and compare flights from Belfast to Fremont that are best for you.

Fly from

Belfast

Fly to

Fremont

Route

Depart

Return

Price

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 5/3

06:35-18:45

1 stop20h 10m

San Francisco

Mon 9/3

18:30-18:35

1 stop17h 05m

£470

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 9/10

06:30-11:45

1 stop13h 15m

San Francisco

Thu 16/10

10:35-16:55

2 stops22h 20m

£474

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sat 25/10

09:15-12:05

2 stops34h 50m

San Francisco

Sat 1/11

08:25-21:40

3 stops30h 15m

£985

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 17/9

18:50-15:55

2 stops29h 05m

£428

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 17/9

06:50-17:25

1 stop18h 35m

£553

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 31/10

14:25-15:35

3 stops32h 10m

£1,061

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 31/10

06:30-12:50

1 stop13h 20m

£2,688

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Best time to book a flight from Belfast to Fremont

Have a flexible travel schedule? Discover the best time to fly to Fremont from Belfast 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 Belfast to Fremont

What is the cheapest time of day to fly from BFS to FR8?

Find hourly flight availability from Belfast to Fremont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Belfast to Fremont as you normally would.

Reviews of airlines servicing Fremont

Get insights into the airlines that provide service to Fremont. 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 Fremont. Reviews last updated 12 September 2025.
Read reviews from past customers who have flown with American Airlines and British Airways from Belfast to Fremont. 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.
American Airlines
7.2
Good
10,000 reviews
Check prices

Comfort

7.2

Entertainment

6.9

Overall

7.2

Food

6.4

Crew

8.0

Boarding

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews
Check prices

Comfort

7.2

Entertainment

6.9

Overall

7.2

Food

6.4

Crew

8.0

Boarding

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.
British Airways
6.7
Okay
7,361 reviews
American Airlines
7.2
Good
10,000 reviews
Check prices

Comfort

7.2

Entertainment

6.9

Overall

7.2

Food

6.4

Crew

8.0

Boarding

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.

Related info for your journey

Find useful and relevant information for your journey from Belfast to Fremont. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Belfast to Fremont?

    Airlines like American Airlines fly from Belfast to Fremont in about 20h 10m. The time it takes to get you to your destination can typically vary by up to . The distance between Belfast and Fremont is about 5038 mi.

  • Can I find deals for flights from Belfast to Fremont that include hotel bookings?

    Yes. In addition to deals on Belfast to Fremont flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Belfast to Fremont?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to Fremont.

  • Can I find deals for business class flights from Belfast to Fremont?

    Yes. Cheapflights offers flight deals from Belfast to Fremont 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 Fremont?

    Currently, February is the cheapest month in which you can book a flight from Belfast to Fremont (average of £538). Flying from Belfast to Fremont in July is currently the most expensive (average of £803). 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 Belfast to Fremont

Discover the top 2 airlines that operate flights from Belfast to Fremont. 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 858,174 searches. Data last updated 12 September 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£403Average£564FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£468Average£518FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Belfast to Fremont?

Deals for Belfast to Fremont 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 Belfast to Fremont?

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 Fremont from Belfast.

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

Certainly. Search results for flights to Fremont from Belfast shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for Belfast to Fremont flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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