$399+ Cheap flights from San Francisco (SFO) to Belfast Intl (BFS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BFS
Nov 19 — Nov 261
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Belfast Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Francisco to Belfast Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Francisco to Belfast IntlExplore the most affordable flight options available from San Francisco to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 20, 2026.
Explore the most affordable flight options available from San Francisco to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 20, 2026.
This Mytrip deal was found by Cheapflights users on 10/17. 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.
Wed 12/27:25 pm -
2 stops18h 35m
Wed 12/98:50 pm -
2 stops27h 40m
Deal found 10/17![Multiple Airlines logo]()
$1,022
This Mytrip deal was found by Cheapflights users on 10/19. 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.
Tue 11/178:25 am -
3 stops23h 45m
Tue 11/248:45 am -
3 stops38h 00m
Deal found 10/19![Multiple Airlines logo]()
$1,047
This Mytrip deal was found by Cheapflights users on 10/16. 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.
Mon 11/304:35 pm -
2 stops19h 35m
Mon 12/710:05 pm -
2 stops25h 30m
Deal found 10/16![Multiple Airlines logo]()
$1,120
This Mytrip deal was found by Cheapflights users on 10/19. 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 12/37:25 pm -
2 stops18h 30m
Thu 12/108:05 pm -
2 stops28h 25m
Deal found 10/19![Multiple Airlines logo]()
$1,148
This Booking.com deal was found by Cheapflights users on 10/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:20 pm -
2 stops21h 00m
Mon 11/235:30 pm -
3 stops31h 00m
Deal found 10/17![Multiple Airlines logo]()
$1,199
This Booking.com deal was found by Cheapflights users on 10/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:20 pm -
2 stops20h 00m
Wed 11/117:55 am -
3 stops40h 35m
Deal found 10/16![Multiple Airlines logo]()
$1,222
Best flights from San Francisco to Belfast IntlDiscover carefully curated flight deals from San Francisco to Belfast Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 20, 2026.
Discover carefully curated flight deals from San Francisco to Belfast Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 20, 2026.
This Mytrip deal was found by Cheapflights users on 10/17. 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.
Wed 12/27:25 pm -
2 stops18h 35m
Wed 12/98:50 pm -
2 stops27h 40m
Deal found 10/17![Multiple Airlines logo]()
$1,022
This Mytrip deal was found by Cheapflights users on 10/19. 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.
Tue 11/178:25 am -
3 stops23h 45m
Tue 11/248:45 am -
3 stops38h 00m
Deal found 10/19![Multiple Airlines logo]()
$1,047
This Mytrip deal was found by Cheapflights users on 10/19. 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 12/37:25 pm -
2 stops18h 30m
Thu 12/108:05 pm -
2 stops28h 25m
Deal found 10/19![Multiple Airlines logo]()
$1,148
This Mytrip deal was found by Cheapflights users on 10/16. 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.
Mon 11/308:25 am -
3 stops27h 30m
Mon 12/710:05 pm -
2 stops25h 30m
Deal found 10/16![Multiple Airlines logo]()
$1,186
This Booking.com deal was found by Cheapflights users on 10/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:20 pm -
2 stops21h 00m
Mon 11/235:30 pm -
3 stops31h 00m
Deal found 10/17![Multiple Airlines logo]()
$1,199
This Booking.com deal was found by Cheapflights users on 10/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:20 pm -
2 stops20h 00m
Wed 11/117:55 am -
3 stops40h 35m
Deal found 10/16![Multiple Airlines logo]()
$1,222
This Booking.com deal was found by Cheapflights users on 10/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:20 pm -
2 stops21h 15m
Mon 11/910:15 am -
3 stops42h 17m
Deal found 10/19![Multiple Airlines logo]()
$1,434
Last-minute flights from San Francisco to Belfast IntlDiscover last-minute flight deals from San Francisco to Belfast Intl. Data last updated October 20, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Belfast Intl. Data last updated October 20, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/19. 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.
Fri 11/65:20 pm -
2 stops21h 15m
Mon 11/96:20 am -
2 stops23h 10m
Deal found 10/19![Multiple Airlines logo]()
$1,432
This Booking.com deal was found by Cheapflights users on 10/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:20 pm -
2 stops20h 00m
Wed 11/117:55 am -
3 stops40h 35m
Deal found 10/16![Multiple Airlines logo]()
$1,222
This Booking.com deal was found by Cheapflights users on 10/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:20 pm -
2 stops21h 00m
Mon 11/235:30 pm -
3 stops31h 00m
Deal found 10/17![Multiple Airlines logo]()
$1,199
This Mytrip deal was found by Cheapflights users on 10/19. 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.
Tue 11/178:25 am -
3 stops23h 45m
Tue 11/248:45 am -
3 stops38h 00m
Deal found 10/19![Multiple Airlines logo]()
$1,047
This Mytrip deal was found by Cheapflights users on 10/16. 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.
Mon 11/304:35 pm -
2 stops19h 35m
Mon 12/710:05 pm -
2 stops25h 30m
Deal found 10/16![Multiple Airlines logo]()
$1,120
One-way flights from San Francisco to Belfast IntlSearch for one-way flight options from San Francisco to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated October 20, 2026.
Search for one-way flight options from San Francisco to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated October 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/17. 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.
Mon 2/85:20 pm -
2 stops18h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Multiple Airlines logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 10/17. 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.
Sun 2/75:20 pm -
2 stops20h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Multiple Airlines logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Fri 3/196:20 pm -
2 stops39h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Multiple Airlines logo]()
$402
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Sun 3/218:25 pm -
3 stops32h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$407
This Kiwi.com deal was found by Cheapflights users on 10/17. 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.
Tue 2/95:20 pm -
2 stops19h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Multiple Airlines logo]()
$415
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Mon 3/2210:40 pm -
2 stops30h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$420
This Kiwi.com deal was found by Cheapflights users on 10/17. 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.
Wed 2/105:20 pm -
2 stops16h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Multiple Airlines logo]()
$441
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Wed 3/248:25 pm -
3 stops33h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$448
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Tue 3/2310:40 pm -
3 stops38h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$460
This Kiwi.com deal was found by Cheapflights users on 10/17. 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.
Sat 2/135:20 pm -
2 stops18h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Multiple Airlines logo]()
$464
Find flight deals from San Francisco to Belfast Intl
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Belfast Intl (BFS). 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 October 20, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $1,022 (Mytrip) |
One-way from | $399 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco 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 7,457,451 searches. Data last updated October 20, 2026.
Use the filters below to find and compare flights from San Francisco to Belfast Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoBelfast
SFO San Francisco - BFS Belfast Intl
SFOBFS
San Francisco
Mon 2/8
5:20 pm-8:10 pm
2 stops18h 50m
Belfast Intl
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$399
San FranciscoBelfast
SFO San Francisco - BFS Belfast Intl
SFOBFS
San Francisco
Sun 2/7
5:20 pm-9:30 pm
2 stops20h 10m
Belfast Intl
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$400
San FranciscoBelfast
SFO San Francisco - BFS Belfast Intl
SFOBFS
San Francisco
Tue 3/23
6:20 pm-8:55 pm
2 stops19h 35m
Belfast Intl
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$410
San FranciscoBelfast
SFO San Francisco - BFS Belfast Intl
SFOBFS
San Francisco
Tue 2/9
5:20 pm-8:55 pm
2 stops19h 35m
Belfast Intl
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$415
San FranciscoBelfast
SFO San Francisco - BFS Belfast Intl
SFOBFS
San Francisco
Mon 3/22
10:40 pm-12:20 pm
2 stops30h 40m
Belfast Intl
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$420
Quickest round-trip
San FranciscoBelfast
SFO San Francisco - BFS Belfast Intl
SFOBFS
San Francisco
Wed 2/10
5:20 pm-5:25 pm
2 stops16h 05m
Belfast Intl
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$441
San FranciscoBelfast
SFO San Francisco - BFS Belfast Intl
SFOBFS
San Francisco
Wed 3/24
8:25 pm-12:35 pm
3 stops33h 10m
Belfast Intl
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$448
San FranciscoBelfast
SFO San Francisco - BFS Belfast Intl
SFOBFS
San Francisco
Sat 3/20
10:22 pm-8:15 pm
3 stops38h 53m
Belfast Intl
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$468
San FranciscoBelfast
SFO San Francisco - BFS Belfast Intl
SFOBFS
San Francisco
Fri 3/19
10:40 pm-9:30 pm
3 stops39h 50m
Belfast Intl
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$498
San FranciscoBelfast
SFO San Francisco - BFS Belfast Intl
SFOBFS
San Francisco
Thu 3/18
10:40 pm-11:55 am
2 stops30h 15m
Belfast Intl
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$500
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from San Francisco to Belfast Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Belfast Intl in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-Belfast Intl Airport flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on San Francisco-Belfast Intl Airport flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from San Francisco-Belfast Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Belfast Intl Airport flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Belfast Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Francisco to Belfast Intl
Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from San Francisco with our price prediction graph.
SFO-BFS
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.
Reviews of airlines servicing Belfast Intl
Get insights into the airlines that provide service to Belfast Intl. 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 Intl. Reviews last updated October 20, 2026.
See what other customers who have flown with British Airways from San Francisco to Belfast Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.0
Food
6.4
Overall
6.7
Comfort
6.8
Entertainment
6.5
Crew
7.7
Reviews
1 / 20
8.0
ExcellentLakshmi,Dec 2025
SFO - LHR
Boarding
7.0
Food
6.4
Overall
6.7
Comfort
6.8
Entertainment
6.5
Crew
7.7
Reviews
1 / 20
8.0
ExcellentLakshmi,Dec 2025
SFO - LHR
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Belfast Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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
Belfast Intl flight routes
Complete your trip
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Alternative routes for San Francisco to Belfast Intl
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Other flights to Belfast Intl
Explore flights to Belfast Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 20, 2026.
Complete your trip
Complete your trip to Belfast Intl by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Francisco to Belfast Intl by cabin class
Find flights from San Francisco to Belfast Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Francisco and Belfast Intl flights
Browse other San Francisco and Belfast Intl flight options. Last updated on October 20, 2026.
Other flights from San Francisco
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on October 20, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from San Francisco to Belfast Intl
Discover the top airline that operate flights from San Francisco to Belfast Intl. 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 7,457,451 searches. Data last updated October 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$586 | Average$873 | FlexibilityNo cancel fee | On-time70% |