Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

SFO - BFS

Find cheap flights from San Francisco to Belfast Intl Airport from $549

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Belfast Intl departing on 5/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 6/7
Fri 6/14

Search hundreds of travel sites at once for deals on flights to Belfast Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Belfast, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Belfast, as well as popular online travel agencies
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from San Francisco to Belfast Intl (SFO-BFS)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Belfast Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:15 am - 8:15 pmSFO-BFS
30h 00m3 stops
7:00 am - 9:16 pmBFS-SFO
22h 16m2 stops
Sat, Sep 14 - Sun, Sep 22
7:40 pm - 10:00 pmSFO-BFS
18h 20m2 stops
7:00 am - 9:16 pmBFS-SFO
22h 16m2 stops
$1,162
Find Deal
Sat, Sep 14 - Sun, Sep 22
12:50 pm - 6:05 pmSFO-BFS
21h 15m2 stops
6:25 am - 5:13 pmBFS-SFO
42h 48m3 stops
$1,238
Find Deal
Sun, Jun 9 - Sat, Jun 15
10:15 am - 6:05 pmSFO-BFS
23h 50m3 stops
6:25 am - 5:13 pmBFS-SFO
42h 48m3 stops
$1,239
Find Deal
Sun, Jun 9 - Sat, Jun 15
12:50 pm - 6:05 pmSFO-BFS
21h 15m2 stops
6:00 am - 9:20 pmBFS-SFO
23h 20m2 stops
$1,278
Find Deal
Sun, Jun 9 - Sat, Jun 15
1:40 pm - 11:10 pmSFO-BFS
25h 30m3 stops
6:15 am - 5:13 pmBFS-SFO
42h 58m3 stops
$1,284
Find Deal
Sat, Jul 13 - Mon, Jul 22
7:40 pm - 11:05 pmSFO-BFS
19h 25m2 stops
6:15 am - 12:00 pmBFS-SFO
37h 45m3 stops
$1,346
Find Deal
Sat, Jul 13 - Mon, Jul 22
1:40 pm - 11:10 pmSFO-BFS
25h 30m3 stops
7:00 am - 9:30 amBFS-SFO
34h 30m3 stops
$1,390
Find Deal
Sat, Jul 13 - Sun, Jul 21
4:05 pm - 7:05 pmSFO-BFS
19h 00m1 stop
6:15 am - 12:00 pmBFS-SFO
37h 45m3 stops
$1,422
Find Deal
Sat, Jul 13 - Mon, Jul 22
7:40 pm - 11:05 pmSFO-BFS
19h 25m2 stops
7:00 am - 9:30 amBFS-SFO
34h 30m3 stops
$1,452
Find Deal
Sat, Jul 13 - Sun, Jul 21

Flights from San Francisco to Belfast Intl - Travel Insights & Trends

Get data-powered insights and trends into flights from San Francisco to Belfast Intl to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from San Francisco to Belfast Intl Airport?

The average price of all flights from San Francisco to Belfast Intl Airport clicked on KAYAK for each day over the last 12 months.
When flying from San Francisco to Belfast Intl Airport, you should consider leaving on a Tuesday and avoid Saturdays if you are looking for the best rates. For your return to San Francisco, you’ll find the best rates on Tuesdays and the most expensive ones on Fridays.

What is the cheapest month to fly from San Francisco to Belfast Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Francisco to Belfast Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from San Francisco to Belfast Intl Airport is February, where tickets cost $672 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $1,376 and $1,312 respectively.

How far in advance should I book a flight from San Francisco to Belfast Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from San Francisco to Belfast Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from San Francisco to Belfast Intl Airport, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 29 days before departure.

Good to know

Low season

February

High season

May

Cheapest flight

$549
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from San Francisco to Belfast Intl Airport

When to book flights from San Francisco to Belfast Intl

Are your dates flexible? Find out the best times to travel from San Francisco to Belfast Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Francisco to Belfast Intl Airport flights

  • What is the cheapest flight from San Francisco to Belfast Intl Airport?

    In the last 3 days, the lowest price for a flight from San Francisco to Belfast Intl Airport was $549 for a one-way ticket and $993 for a round-trip.

  • Do I need a passport to fly between San Francisco and Belfast Intl Airport?

    Yes, you’ll need a passport to travel to Belfast Intl Airport from San Francisco.

  • Which aircraft models fly most regularly from San Francisco to Belfast Intl Airport?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from San Francisco to Belfast Intl Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Belfast Intl Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Belfast Intl Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast Intl Airport from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Belfast Intl Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Belfast Intl Airport with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and BFS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Belfast Intl Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Belfast Intl Airport from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from San Francisco to Belfast Intl

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Belfast. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Belfast Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
American AirlinesOverall score based on 14677 reviews
7.6Boarding
7.1Entertainment
7.2Comfort
8.0Crew
6.6Food
Airline reviews

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

2.0 MediocreBrooke, May 2024SAN - DFW
Read more about American Airlines reviews

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

You cancelled my flight by email then made it very difficult to get in contact with you. Then put me in a flight with a long layover in Mexico returning to the wrong airport in uk. Mind blowing my stressful. I missed see my grand dad because of you.

Lost our bags in Heathrow, We didn’t receive bags in Mallorca for 3 days, out of a 7 day cycling vacation. Really inconvenient and disappointing!

We missed the flight to Barcelona because the flight from Baltimore was delayed. We flew on Vueling VW6653. Our luggage didn’t arrive. Please help us get our luggage. We are staying at Hotel Gran Via in Barcelona

The seats were tiny, being of a fairly petite build, I don’t usually expect to feel crammed and cramped in a seat, but I definitely was on this flight. I couldn’t even bend over to get anything out from under the seat in front and getting up to go to the bathroom at night with the seat backs reclined was nearly impossible. I had to do gymnastics to get over and out. For an airline that does long flights overnight, it’s kind of ridiculous.

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

I've done hundreds of flights in my life, and this flight was one of the best I've ever taken, From beginning to end, everything went smoothly, professionally, and with a smile and friendly attitude from all employees I interacted with. The food was delicious (and free), as were the drinks. There was just a genial and effective way in the way that British Airways organized the flight -that reminded of days in the 70's, 80's, and 90's, when flying was a fun, and exciting adventure. I enjoyed and had confidence in the abilities of the flight crew, I'll be flying British Airways several more times this summer. Thank you so much for the great experience! Cheryl Olso

Terrible! I missed my flight to my final destination and British airlines and American Airlines keep pointing fingers on each other’s. Nobody wants to take responsibility

Overall, terrific service, accommodations, and experience. Only reason comfort was rated lower was because it was difficult to keep a comfortable sleeping position for the overnight flight, but I also had an economy seat.

Very cramped seats in economy, difficult to get comfortable with your legs and feet and back. The seat width is ok but I’m average size. Food is HORRIBLE. Crew is friendly. Delays and very tight connections made it tough for navigating. We would have missed our connecting flight if it wasn’t delayed too. The terminal transit was slow and normally every 10 minutes before 8pm, after 8 pm is every 30 minutes!!!!! No free wine or drinks!! Below average attitude.

Leg room was better than expected. Lavatory’s were easy to access.crew was grea!

Book cheap flights from San Francisco to Belfast

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Francisco to Belfast found on KAYAK in the last 72 hours.
5/19Sun
2 stops
19h 45mSFO-BFS
$549
5/19Sun
3 stops
31h 05mSFO-BFS
$909

Search by stops

Search by price

San Francisco - Belfast Intl Airport Flights

Departure:

San Francisco (undefined)United States

Destination:

Belfast Intl Airport (BFS)United Kingdom

Return flight deals:

Belfast Intl Airport - San Francisco

Cabin classes: