Question 1

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

Accepted Answer

Flying on British Airways is currently your cheapest option to San Francisco, with prices starting at £391. Additional return tickets that might be worth considering are offered by Virgin Atlantic and Delta, with the lowest prices starting at £506 and £567, respectively. British Airways is currently priced 29% below the average price you’ll pay for this route.

Question 2

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

Accepted Answer

Currently, February is the cheapest month in which you can book a flight from Belfast to San Francisco (average of £538). Flying from Belfast 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 to San Francisco?

Accepted Answer

Travellers seeking maximum savings on their Belfast 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 to San Francisco?

Accepted Answer

Users have found that flying from Belfast 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 to San Francisco?

Accepted Answer

Flights from Belfast to San Francisco lean towards being more expensive in December. Prices are generally better when you fly from Belfast to San Francisco in April, with the cheapest ticket starting at £384.

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 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?

Accepted Answer

Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from Belfast. Booking flights from Belfast to San Francisco (SFO) should be relatively easy as there are 0 daily inbound flights from Belfast from 2 different airlines.

Question 10

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

Accepted Answer

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

Question 11

How can I find direct flights from Belfast 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 to San Francisco.

Question 12

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

Accepted Answer

Yes. Cheapflights offers flight deals from Belfast 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 to San Francisco?

Accepted Answer

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Francisco from Belfast today with Cheapflights!

Question 14

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

Accepted Answer

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Belfast to San Francisco.

Question 15

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

Accepted Answer

Certainly. Search results for flights to San Francisco from Belfast shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Question 16

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

Accepted Answer

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from Belfast today and book when prices fit your budget.

Round-trip from	£391
Popular in	December
Cheapest in	April
Average price	£707

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£397	Average£566	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£461	Average£511	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Cheap flights from Belfast to San Francisco from £391

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/11. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapest flights from Belfast to San FranciscoExplore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 July 2025.

Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 July 2025.

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Best time to book a flight from Belfast to San Francisco

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

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

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

Find hourly flight availability from Belfast to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 July 2025.

Reviews of airlines servicing San Francisco

Read through reviews of airlines operating flights from Belfast to San Francisco, such as Delta, KLM, andFinnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Belfast 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?

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

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

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

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

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

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Alternative routes for Belfast to San Francisco

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Top 2 airlines flying from Belfast to San Francisco

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

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

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

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

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Cheapest flights from Belfast to San Francisco
Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 July 2025.