$696 Find cheap flights from Belfast to San Francisco

In the last 3 days, the lowest price for a flight from Belfast to San Francisco was $696 for a round-trip ticket.

Yes

Belfast has 2 major airports: Belfast Intl and Belfast City. San Francisco is the only airport in San Francisco. You’ll usually find the cheapest deals if you fly from Belfast City Airport.

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

oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Belfast and San Francisco, 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 Belfast to San Francisco.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Belfast 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 San Francisco with an airline and back to Belfast 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 San Francisco from Belfast up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.