Cheap flights from Belfast to San Francisco from £326
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast to San Francisco departing on 15/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Belfast to San Francisco
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Francisco?
The month of April is, on average, the cheapest month to fly to San Francisco from Belfast, with most prices found around £448. If you are unable to visit San Francisco during the month of April, then departing from Belfast during the month November is also very affordable. Most momondo users find prices during this month for around £453.
What is the cheapest day to depart on your flight to San Francisco?
The cheapest day to depart on your flight to San Francisco is on a Thursday when prices can be found for as low as £485. This is often the case because there is less demand to fly during this day of the week. Flights from Belfast to San Francisco on a Tuesday will generally be more expensive and average around £714. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
Cheap Belfast to San Francisco flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Belfast to San Francisco
How far is Belfast to San Francisco by plane?
San Francisco is 5028.1 mi away from Belfast. A reasonable flight in good conditions will take 13h 15m.
When did momondo last update prices for flights from Belfast to San Francisco Airport?
Prices for flights from Belfast to San Francisco Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Belfast to San Francisco Airport?
As of June 2025, there are 2 operators available to choose from for flights from Belfast to San Francisco Airport.
How old do you have to be to fly from Belfast to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from Belfast to San Francisco
Compare and see reviews for airlines that fly from Belfast to San Francisco with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £406 | Free Cancellation | Rating 6.6 7,028 reviews | |||
| PriceFrom £467 | Free Cancellation | Rating 7.2 10,000 reviews |
Travelling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Belfast to San Francisco?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Belfast to San Francisco . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Belfast to San Francisco with flexible booking policies on momondo?
All flight searches from Belfast to San Francisco on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Belfast to San Francisco?
momondo provides multiple filters to help you find the best flight to San Francisco from Belfast. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Belfast to San Francisco right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Belfast to San Francisco flights. All you need is a valid email address and we will do the rest; it is that quick and easy.