Find cheap flights from Chicago to Belfast from $420

In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Belfast was $420 for a one-way ticket and $661 for a round-trip.

Yes

On your way to Belfast, you’ll fly out from Chicago O'Hare Intl. You’ll be landing in one of Belfast’s 2 airports: Belfast Intl or Belfast City.

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

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

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