$630 Find Cheap Flights from San Francisco to Belfast

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Belfast departing on 8/3. 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
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Belfast

 
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
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Cheap Flights from San Francisco to Belfast (SFO-BHD)

 
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 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Belfast

Sun, Aug 3 - Tue, Aug 19
American Airlines Logo
7:20 pm - 8:45 pmSFO-BHD
17h 25m1 stop
American Airlines Logo
6:35 am - 5:25 pmBHD-SFO
18h 50m1 stop
$630American Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
Delta Logo
1:55 pm - 9:00 pmSFO-BHD
23h 05m1 stop
Delta Logo
5:20 pm - 11:50 amBHD-SFO
26h 30m1 stop
$738Delta
Find Deal
Wed, Dec 3 - Sun, Dec 7
Delta Logo
10:31 am - 4:50 pmSFO-BHD
22h 19m2 stops
Delta Logo
5:20 pm - 11:50 amBHD-SFO
26h 30m1 stop
$743Delta
Find Deal
Wed, Dec 3 - Sun, Dec 7
Delta Logo
1:45 pm - 9:00 pmSFO-BHD
23h 15m2 stops
Delta Logo
5:20 pm - 7:36 pmBHD-SFO
34h 16m2 stops
$753Delta
Find Deal
Sat, Oct 4 - Fri, Oct 10
British Airways Logo
10:14 am - 10:10 amSFO-BHD
15h 56m2 stops
British Airways Logo
11:55 am - 11:35 pmBHD-SFO
43h 40m2 stops
$844British Airways
Find Deal
Sat, Oct 4 - Fri, Oct 10
 Logo
1:45 pm - 4:55 pmSFO-BHD
19h 10m1 stop
 Logo
5:25 pm - 11:45 amBHD-SFO
26h 20m1 stop
Sat, Oct 4 - Fri, Oct 10
British Airways Logo
8:00 am - 10:10 amSFO-BHD
18h 10m2 stops
British Airways Logo
2:00 pm - 5:25 pmBHD-SFO
35h 25m1 stop
$868British Airways
Find Deal
Sat, Oct 4 - Fri, Oct 10
 Logo
1:45 pm - 4:55 pmSFO-BHD
19h 10m2 stops
 Logo
5:25 pm - 11:45 amBHD-SFO
26h 20m1 stop
Tue, Oct 7 - Fri, Oct 24
KLM Logo
1:45 pm - 4:55 pmSFO-BHD
19h 10m1 stop
KLM Logo
5:25 pm - 11:45 amBHD-SFO
26h 20m1 stop
$4,817KLM
Find Deal
Tue, Oct 7 - Fri, Oct 24
KLM Logo
1:45 pm - 4:55 pmSFO-BHD
19h 10m1 stop
KLM Logo
6:30 am - 6:10 pmBHD-SFO
19h 40m2 stops
$4,827KLM
Find Deal
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KAYAK's insights & trends for San Francisco to Belfast flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Belfast, 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 is October, where tickets cost $588 (return) on average. On the other hand, the most expensive months are January and November, where the average cost of round-trip tickets is $1,339 and $1,175 respectively.

Good to know

Cheapest flight$630
Flight from San Francisco to Belfast City Airport

When to book flights from San Francisco to Belfast

Are your dates flexible? Find out the best times to travel from San Francisco to Belfast 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 flights from San Francisco to Belfast

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

    In the last 3 days, the lowest price for a flight from San Francisco to Belfast was $1,065 for a one-way ticket and $630 for a round-trip.

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

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

  • Which airports will I be using when flying from San Francisco to Belfast?

    When flying out of San Francisco you will be using San Francisco. You will be landing at one of these airports: Belfast Intl or Belfast City.

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

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

  • Which airline alliances offer flights from San Francisco to Belfast?

    oneworld, and SkyTeam are the airline alliances operating flights between San Francisco and Belfast, with SkyTeam being the most commonly used for this route.

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

    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.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast 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?

    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 with an airline and back to San Francisco with another airline.

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

    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 from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from San Francisco to Belfast

 
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? 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.
7.2
American AirlinesOverall score based on 10000 reviews
8.0Crew
7.2Comfort
6.5Food
7.5Boarding
6.9Entertainment
Airline reviews

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

4.0 OkayLeo, Jul 2025LAX - CLT
Read more American Airlines reviews

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

Bad food, small seats that didn’t recline. I thought I was buying a quantas ticket so I feel like I got scammed

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Cramped seats. FAA should make airlines have more legroom, for even short people complain

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

Eventless. It was a good flight and good crew. Can’t complaint.

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

British Airways staff are very polite and willing to help.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

They’ve lost my bag and I have no way of really getting in touch with anyone and have received no updates.

Very crowded, no real explanation of food "chicken or pasta?" After dinner no drinks service. Plane was clean, but little help with finding soaces fir luggage to get into overhead bins. Many passengers putting 2 bags, hats, duty free in overhead bins so no space for roll ons

Flight was good but seat in 12D was not comfortable, better on the Airbus 321 from Tampa to Charlotte. No breakfast was served before landing in zLonfon only a coffee and orange juice.

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

The entertainment selection was ok, but overall not bad! The crew was great.

Good crew and boarding process. Horrible food and one of the most uncomfortable aircraft seats I have ever sat in. The cabin temperature was warm which made it hard for my family to sleep.

The check-in of my luggage was terrible. When purchased my tickets, one luggage and one carry-on was part of the fight. My flight was switched from British to American Airline. During check-in of luggage at the airport, I was denied and had to pay extra $75. How do I get reimbursed for this extra luggage payment?

This was the second time on BA, food terrible, bathrooms gross,( granted, that was mostly due to the disgusting children urinating all over it)boarding was late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress. Seats were painful, that's what you get for traveling like a poor in economy, right BA? Should have been able to afford business or first class if you want to actually be able to walk upright without back pain after a trip.

The delay was not communicated via text and the person who helped with check in also didn’t inform me about the delay. I ended up missing my connection and it was a waste of 5 hours. The crew didn’t mention there would be someone at the gate informing of if I would be rebooked and there was no signage. Overall a very poor experience. The British Airways app was also very buggy, and didn’t work. I will avoid flying with British Airways when possible.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

Everything you need to know for your flight from San Francisco to Belfast

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