Flights from San Francisco to Northern Ireland

Flight deals from San Francisco to Northern Ireland

Looking for cheap tickets from San Francisco to Northern Ireland, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.

Belfast.R 5,679 per passenger.Departing Mon, 20 Apr.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Francisco International on Mon, 20 Apr, arriving in Belfast International.Price includes taxes and charges.From R 5,679, select.

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Flying from San Francisco to Northern Ireland

Arm yourself with these facts on the fly.

Cheapest flight found	R 5,679
Cheapest month to fly	April
Cheapest airport to fly from	San Francisco International

How to find cheap flights from San Francisco to Northern Ireland

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from San Francisco to Northern Ireland. Other savvy travellers recently found return flights from R 10,685 and one-way tickets from R 5,679 one-way. Ready to join them? Here are a few tips to help you do it the smart way.

Fly from San Francisco International into Belfast City

At the moment, the lowest priced flight tickets to Northern Ireland are from San Francisco International Airport to Belfast City Airport.

Fly in February

We crunched the flight calendar and found the cheapest time to fly from San Francisco to Northern Ireland is currently February.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from San Francisco to anywhere you choose in Northern Ireland.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from San Francisco to Northern Ireland go up or down so you can book when the time is just right.

Relax – these are fee-free flight tickets

With us, there are no added fees – the Northern Ireland to Northern Ireland flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What is the cheapest month to fly from San Francisco to Northern Ireland?

The cheapest month to fly from San Francisco to Derry Airport is currently August. The cheapest month to fly from San Francisco to Belfast City Airport is usually February

Which upcoming date is cheapest to fly from San Francisco to Northern Ireland on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Francisco to Northern Ireland on Wednesday, 18 February 2026.

Are there any direct flights from San Francisco to Northern Ireland?

Currently, there aren't any direct flights from San Francisco to Northern Ireland, but you can still fly with a stopover.

If I'm flying from San Francisco, where in Northern Ireland is cheapest to fly into?

If you're flying from San Francisco, the cheapest city in Northern Ireland to fly into is Belfast. The cheapest airport serving Belfast at the moment is Belfast City.