Cheap flights from San Francisco to Belfast from $377
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Belfast departing on 8/15. 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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American Airlines flights from San Francisco to Belfast
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Virgin Atlantic flights from San Francisco to Belfast
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How to get the cheapest flight ticket from San Francisco to Belfast
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 Belfast?
In general, October is the cheapest month to fly from San Francisco to Belfast. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $588. If you don’t want to visit Belfast in October, then you should wait until April to fly from San Francisco, when ticket prices are also cheap, with an average price of $622.
What is the cheapest day to depart on your flight to Belfast?
The cheapest day to depart from San Francisco to Belfast is on a Tuesday when prices can be found for as low as $690. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to Belfast for around $1,423.
Cheap San Francisco to Belfast flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Francisco to Belfast
How far is San Francisco to Belfast by plane?
The straight-line distance from San Francisco to Belfast is 5028.1 mi. By plane, this route typically takes 14h 10m.
When did momondo last update prices for flights from San Francisco Airport to Belfast?
Prices for flights from San Francisco Airport to Belfast refresh daily.
How many operators does momondo search for flights from San Francisco Airport to Belfast?
As of July 2025, there are 2 operators available to choose from for flights from San Francisco Airport to Belfast.
How old do you have to be to fly from San Francisco Airport to Belfast?
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 San Francisco Airport to Belfast.
What documentation or ID do you need to fly to Belfast?
The required travel and health documents for your Belfast trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Belfast. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Best airlines flying from San Francisco to Belfast
Compare and see reviews for airlines that fly from San Francisco to Belfast with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $493 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $588 | Free Cancellation | Rating 6.6 7,089 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from San Francisco to Belfast?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Francisco to Belfast. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from San Francisco to Belfast with flexible booking policies on momondo?
momondo does allow users to show only those flights to Belfast from San Francisco which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from San Francisco to Belfast?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Belfast from San Francisco.
I’m not ready to book a flight from San Francisco to Belfast right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of San Francisco to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.