$353 Find cheap flights from San Francisco to Belfast

In the last 3 days, the lowest price for a flight from San Francisco to Belfast was $353 for a one-way ticket and $687 for a round-trip.

Yes, you’ll need a passport to travel to Belfast from San Francisco.

When flying out of San Francisco you will be using San Francisco. You will be landing at one of these airports: Belfast Intl or Belfast City.

We unfortunately don’t have that data for this specific route.

SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between San Francisco and Belfast, with SkyTeam being the most commonly used for this route.

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 San Francisco to Belfast.

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

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Belfast with an airline and back to San Francisco with another airline.

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