$357 Find Cheap Flights from San Francisco to Northern Ireland

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 Northern Ireland departing on 9/15. 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 Northern Ireland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Northern Ireland, 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 Northern Ireland, as well as popular online travel agencies
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Flight Deals

Cheap Flights from San Francisco to Northern Ireland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Belfast
Belfast1 stop$660
Belfast
Belfast1 stop$660

Book Cheap San Francisco to Northern Ireland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Northern Ireland 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 Northern Ireland

Wed, Dec 3 - Sun, Dec 7
British Airways Logo
5:30 pm - 4:35 pmSFO-BHD
15h 05m1 stop
British Airways Logo
9:10 am - 3:00 pmBHD-SFO
13h 50m1 stop
$660British Airways
Find Deal
Wed, Dec 3 - Sun, Dec 7
British Airways Logo
5:30 pm - 4:35 pmSFO-BHD
15h 05m1 stop
British Airways Logo
8:25 pm - 3:00 pmBHD-SFO
26h 35m1 stop
$661British Airways
Find Deal
Wed, Dec 3 - Sun, Dec 7
Delta Logo
11:05 am - 4:50 pmSFO-BHD
21h 45m2 stops
Delta Logo
6:30 am - 11:50 amBHD-SFO
13h 20m1 stop
$820Delta
Find Deal
Wed, Dec 3 - Sun, Dec 7
Delta Logo
11:05 am - 4:50 pmSFO-BHD
21h 45m2 stops
Delta Logo
6:30 am - 4:00 pmBHD-SFO
17h 30m2 stops
$830Delta
Find Deal
Wed, Dec 3 - Sun, Dec 7
British Airways Logo
5:30 pm - 4:35 pmSFO-BHD
15h 05m1 stop
British Airways Logo
6:30 am - 4:35 pmBHD-SFO
18h 05m2 stops
$849British Airways
Find Deal
Wed, Dec 3 - Sun, Dec 7
British Airways Logo
6:21 am - 10:15 amSFO-BHD
19h 54m2 stops
British Airways Logo
6:30 am - 4:35 pmBHD-SFO
18h 05m2 stops
$853British Airways
Find Deal
Sun, Sep 28 - Sun, Oct 5
 Logo
12:50 pm - 3:55 pmSFO-BFS
19h 05m2 stops
 Logo
11:30 pm - 1:35 pmBFS-SFO
46h 05m3 stops
Sun, Sep 28 - Sun, Oct 5
 Logo
7:10 am - 3:55 pmSFO-BFS
24h 45m3 stops
 Logo
11:30 pm - 1:35 pmBFS-SFO
46h 05m3 stops
Mon, Sep 22 - Wed, Sep 24
American Airlines Logo
10:14 am - 12:55 pmSFO-BHD
18h 41m2 stops
American Airlines Logo
1:50 pm - 10:23 pmBHD-SFO
16h 33m2 stops
$1,382American Airlines
Find Deal
Fri, Aug 29 - Sat, Sep 6
KLM Logo
1:45 pm - 9:15 pmSFO-BHD
23h 30m1 stop
KLM Logo
6:30 am - 11:45 amBHD-SFO
13h 15m1 stop
$1,625KLM
Find Deal
Booking Insights

KAYAK's insights & trends for San Francisco to Northern Ireland flights

Get data-powered insights and trends into flights from San Francisco to Northern Ireland 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 Northern Ireland?

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

Good to know

Low seasonJanuary
Cheapest flight$357
Best time to beat the crowds but there is an average 48% increase in price.
Most popular time to fly and prices are also 22% lower on average.
Flight from San Francisco to Belfast Intl Airport

FAQs - booking Northern Ireland flights

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

    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 Northern Ireland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from San Francisco to Northern Ireland 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 Northern Ireland?

    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 from San Francisco to Northern Ireland with an airline and back with another airline.

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

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

  • What is the cheapest time of day to fly to Northern Ireland?

    The cheapest time of day to fly to Northern Ireland is generally in the afternoon, when round-trip flights cost $819 on average. Morning departures are around 60% more expensive than evening flights, on average. The most expensive time of day to fly to Northern Ireland is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,295.

Reviews of the top airlines flying from San Francisco to Northern Ireland

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Northern Ireland. 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 Northern Ireland? 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
7.2Comfort
6.5Food
6.9Entertainment
7.5Boarding
8.0Crew
Airline reviews

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

2.0 MediocreAnonymous, Aug 2025SBP - DFW
Read more American Airlines reviews

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Was not able to watch most shows on the entertainment site. They would not load

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

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

Although the crew were great and the good nice, I might as well have been on Ryanair for the amount of space I had. Not good enough BA. I’d rather pay more and not feel like a human sardine.

Love the A380 - loads of room. Headphone socket on my seat didn’t work. Sounds like a trivial issue? Well when flying long-haul the in-flight entertainment is what keeps you going so when it doesn’t work it’s a disaster. Pay attention to the details please BA. Spoiled what was otherwise an excellent flight with the usual brilliant crew.

Crew were fantastic can’t fault them at all. Couldn’t do enough for us

Crying baby the ENTIRE flight. Not your fault, but I paid 2700 for a premium economy ticket and it wasn't worth it. should have just stuck with coach. flight attendants very mediocre - minimal effort. Plane didn't seem very clean. Didn't have any cleansing wipes - most airlines give you this when you board. Flat screen scrolling didn't work. Toiletry case a joke - why bother at all?

The overall seat and cushion needs to be updated. It was hard and no support. My butt was numb for most of the flight. The food was subpar at best being in premium economy cost. The flight attendants were excellent and attentive during the whole flight. Disappointed I had to select our seats 24 hours prior.

I enjoyed the comfort of Premium Economy. The Purser on London-Nairobi was a little testy, snappish in his tone. I understand stressed, tired, etc but his tone in addressing passengers I found wanting.

Very good crew. The seating in economy plus was excellent, and I slept most of the way. The diabetic meal that I requested was almost tasteless--about a 2 on a ten-point scale.--so I ate little. And why bother serving dinner to fliers at midnight?! I had eaten a meal at the airport six hours earlier. A good breakfast would be better.

Flight was delayed. Though I checked in with BA live chat three times, our special meals were not provided.

My experience with British Airways is excellent, thanks for all 🫶🏻✈️

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

Everything you need to know for your flight from San Francisco to Northern Ireland

Information on your arrival and departure airports

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