Find cheap flights from Belfast Intl Airport to San Francisco Bay Area

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KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco Bay Area

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to San Francisco Bay Area, 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 Belfast to San Francisco Bay Area, as well as popular online travel agencies
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KAYAK's insights & trends for Belfast Intl to San Francisco Bay Area flights

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

What is the cheapest time of day to fly to San Francisco Bay Area?

The average price for all round-trip flights from Belfast Intl Airport to San Francisco Bay Area depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to San Francisco Bay Area is generally in the evening, when retur flights cost £752 on average. Morning departures are around 6% more expensive than evening flights, on average. The most expensive time of day to fly to San Francisco Bay Area is generally in the morning, which is peak travel time and where the average cost of a ticket is £796.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Belfast Intl Airport to San Francisco Bay Area, 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 Belfast Intl Airport to San Francisco Bay Area is April, when tickets cost £455 (return) on average. On the other hand, the most expensive months are June and August, when the average cost of return tickets is £837 and £802 respectively.

Good to know - Cheap tickets from Belfast Intl Airport to San Francisco Bay Area

Low season

February

High season

June
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly (40% more expensive on average)

FAQs - booking San Francisco Bay Area flights

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

    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 Belfast Intl Airport to San Francisco Bay Area.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Belfast Intl Airport to San Francisco Bay Area 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 Belfast Intl Airport to San Francisco Bay Area?

    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 Belfast Intl Airport to San Francisco Bay Area up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from Belfast Intl to San Francisco Bay Area

 
See real verified KAYAK customer reviews for airlines flying from Belfast to San Francisco Bay Area. 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 Belfast Intl to San Francisco Bay Area? 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.
6.6
British AirwaysOverall score based on 6830 reviews
6.3Food
7.6Crew
6.4Entertainment
6.7Comfort
6.8Boarding
Airline reviews

Boarding is a mess. They never check group # so lots of people crowding in. Comfortable seats this flight. I had an empty seat next to me, very convenient. Food was really not good, but I was starved. The pizza snack thing was horrible. Crew was grand. They really make it enjoyable.

6.0 GoodLorrie, Apr 2025LHR - PDX
Read more British Airways reviews

Boarding is a mess. They never check group # so lots of people crowding in. Comfortable seats this flight. I had an empty seat next to me, very convenient. Food was really not good, but I was starved. The pizza snack thing was horrible. Crew was grand. They really make it enjoyable.

Crew very helpful and friendly. Food is so so. Main meal is not always the best. Did have a choice of a snack part way which was either a cookie, corn snack, or similar. Second kind of meal was basically like a pizza pastry that really wasn’t a favorite but probably a European snack? Screens and selections of movies, tv and such were good. No WI-Fi unless you buy so no free texting or such on the long flight but I think that might be any overseas flight.

Flight Attendant Karen Lynn was an absolute delight. She assisted in every portion of the services provided throughout the flight, aided with any and all concerns expressed by passengers, and even helped comfort an upset child who was one of five of a traveling family. This quality of service is what keeps me coming back to American. Thank you!

The worst, flight cancelled because the aircraft was not full. Heathrow ground crew totally not helpful and arrogant. Lady proposed us flight with 40min layover instead of direct and said it is our problem of course she was unable to do anything as everything was beyond her control she claimed. after calling on hotline another flight was booked. Flight was cancelled last second so we could not take direct from Zurich but we had to stay overnight in London.

Food was terrible , crew were excellent , IFE was dire . Overall comfortable seat and cabin. Nothing special .

If my tv wasn’t broken and I wasn’t in a seat that didn’t allow for sleeping

Delayed flight due to lack of crew caused me to miss my connection

Please make sure the number of seats matches the number of overhead bins and passengers don't carry on more than one bag.

Seating is tight if you don’t upgrade. Food was decent. Boarding and unboarding was efficient. Smooth flight. Could make upgrades more affordable

American Airlines seemed to run a 'dry' flight. No alcohol was offered at any point with meals. Breakfast was a bit tasteless. The 'hot pocket' whatever that is, was horrid breadish pastry with very little filling. Decaf coffee was horrid. Seats didn't seem as wide or spacious as usual, especually for a ten hour flight.

Everything you need to know for your flight to San Francisco Bay Area

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