Find cheap flights from San Francisco to Belfast Intl Airport from £308

In the last 3 days, the lowest price for a flight from San Francisco to Belfast Intl Airport was £387 for a one-way ticket and £916 for a return.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast Intl Airport from San Francisco is likely to change within 7 days, so travellers 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 return ticket. You could then fly to Belfast Intl Airport 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 Intl Airport from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.