Question 1

What are the cheapest airlines flying from Belfast Intl Airport to San Francisco round-trip?

Accepted Answer

Cheapflights users have booked flights from Belfast Intl Airport to San Francisco round-trip from £406. Another airline that can offer you cheap pricing is American Airlines. Users have found that British Airways is 26% cheaper than the other options available to this destination.

Question 2

What is the cheapest month to book a flight from Belfast Intl Airport to San Francisco?

Accepted Answer

Currently, February is the cheapest month in which you can book a flight from Belfast Intl Airport to San Francisco (average of £538). Flying from Belfast Intl Airport to San Francisco in July is currently the most expensive (average of £803). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 3

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

Accepted Answer

Travellers seeking maximum savings on their Belfast Intl Airport to San Francisco flight should consider departing on Thursday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 4

E

Accepted Answer

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Question 5

E

Accepted Answer

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Question 6

What is the cheapest day to fly round-trip from Belfast Intl Airport to San Francisco?

Accepted Answer

Users have found that flying from Belfast Intl Airport to San Francisco on a Monday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

Question 7

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

Accepted Answer

Flights from Belfast Intl Airport to San Francisco lean towards being more expensive in December. Prices are generally better when you fly from Belfast Intl Airport to San Francisco in September, with the cheapest ticket starting at £388.

Question 8

What is the cheapest time of day to fly from BFS to SFO?

Accepted Answer

One of the essential ways to save on airfare from Belfast Intl Airport to San Francisco is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at midday could potentially save you up to 10% on airfare.

Question 9

What airport do you fly into for flights to San Francisco from Belfast Intl?

Accepted Answer

If you book a flight to San Francisco from Belfast Intl, you will be flying to San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.8 mi from the center of San Francisco. There are 0 flights from Belfast Intl to San Francisco per day from 2 different airlines.

Question 10

Can I find deals for flights from Belfast Intl to San Francisco that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Belfast Intl to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 11

How can I find direct flights from Belfast Intl to San Francisco?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast Intl to San Francisco.

Question 12

Can I find deals for business class flights from Belfast Intl to San Francisco?

Accepted Answer

Yes. Cheapflights offers flight deals from Belfast Intl to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 13

How does Cheapflights help users find flights from Belfast Intl to San Francisco?

Accepted Answer

Cheapflights makes it easy to find Belfast Intl to San Francisco flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Question 14

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to San Francisco?

Accepted Answer

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Belfast Intl to San Francisco for you. Better yet — we are completely free to use.

Question 15

Can Cheapflights find flights from Belfast Intl to San Francisco with no change fees?

Accepted Answer

Users can book flights with no change fees policies with our dedicated filters. Book flights from Belfast Intl to San Francisco flexibly with Cheapflights today.

Question 16

Can Cheapflights notify me if prices for flights from Belfast Intl to San Francisco become cheaper?

Accepted Answer

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

Round-trip from	£584
Popular in	December
Cheapest in	September
Average price	£522

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£406	Average£537	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£471	Average£522	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Cheap flights from Belfast Intl Airport to San Francisco from £584

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Belfast Intl to San Francisco

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Cheapest flights from Belfast Intl to San FranciscoExplore the most affordable flight options available from Belfast Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2025.

Explore the most affordable flight options available from Belfast Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2025.

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Best time to book a flight from Belfast Intl to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Belfast Intl with our price prediction graph.

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Everything you need to know about your flight from Belfast Intl Airport to San Francisco

What is the cheapest time of day to fly from BFS to SFO?

Reviews of airlines servicing San Francisco

Read reviews from past customers who have flown with American Airlines and British Airways from Belfast Intl Airport to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Belfast Intl to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to San Francisco from Belfast Intl?

What are the cheapest airlines flying from Belfast Intl Airport to San Francisco round-trip?

Can I find deals for flights from Belfast Intl to San Francisco that include hotel bookings?

How can I find direct flights from Belfast Intl to San Francisco?

Can I find deals for business class flights from Belfast Intl to San Francisco?

What is the cheapest month to book a flight from Belfast Intl Airport to San Francisco?

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Alternative routes for Belfast Intl to San Francisco

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Top 2 airlines flying from Belfast Intl to San Francisco

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How does Cheapflights help users find flights from Belfast Intl to San Francisco?

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to San Francisco?

Can Cheapflights find flights from Belfast Intl to San Francisco with no change fees?

Can Cheapflights notify me if prices for flights from Belfast Intl to San Francisco become cheaper?

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Cheapest flights from Belfast Intl to San Francisco
Explore the most affordable flight options available from Belfast Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2025.