$321 Find Cheap Flights from Illinois to Northern Ireland - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Illinois to Northern Ireland departing on 9/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheapest flight

$321
Flight from Chicago to Belfast Intl Airport

FAQs for booking flights from Illinois to Northern Ireland

  • How does KAYAK find such low prices on flights from Illinois to Northern Ireland?

    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 Illinois to Northern Ireland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Northern Ireland?

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

  • What is the Hacker Fare option on flights from Illinois to Northern Ireland?

    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 from Illinois to Northern Ireland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Northern Ireland?

    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 from Illinois to Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many airports are there in Northern Ireland?

    There are 3 airports in Northern Ireland. The busiest airport is Belfast City Airport (BHD), with 57% of all flights arriving there.

  • How long is the flight to Northern Ireland?

    An average nonstop flight from Illinois to Northern Ireland takes 15h 34m, covering a distance of 3739 miles. The shortest route is Chicago O'Hare Intl Airport (ORD) to Belfast Intl Airport (BFS) with an average flight time of 11h 10m.

  • What is the most popular destination in Northern Ireland?

    Based on KAYAK flight searches, the most popular destination is Belfast (100% of total searches to Northern Ireland).

Reviews of the top airline flying from Illinois to Northern Ireland

 
Need help choosing which airline to fly with from Illinois to Northern Ireland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.7
British AirwaysOverall score based on 8136 reviews
7.7Crew
6.5Entertainment
6.4Food
7.0Boarding
6.8Comfort
Airline reviews

Comfortable seats, good service overall. The food could’ve been a little bit better. The boarding process was slightly chaotic and in fairness, not all of that is related to the performance of British Airways.

8.0 ExcellentAnonymous, Jul 2026
ORD - LHR
Read more British Airways reviews

Comfortable seats, good service overall. The food could’ve been a little bit better. The boarding process was slightly chaotic and in fairness, not all of that is related to the performance of British Airways.

They gave away my business class seat. No explanation and no apology. Told me I had to take the downgrade if I wanted to get to India. Then no WiFi for 10 hours. Just ridiculous. We should not work with this company at Deloitte. They don’t know how to run a business.

Lady next to me was coughing profusely the entire flight, other lady moved seats because of it, 8 hours of that during an overnight flight is a bit much.

The seats are extra cramped if you are taller than 5’8! Spring for the extra legroom seats for sure if you have a long flight!

Very disappointed with British Airways. It has been over 24 hours and I still have not received my checked baggage or any proper update. Customer support has been unresponsive, making the situation even more frustrating. Poor baggage handling and lack of communication seriously impacted my travel experience.

Cancelled flight and re booked seats were a downgrade. British Airways said the upgrade was t available but when I checked it was but then they wouldn’t make it right

Overall ok. Best part has always been the sundae dessert.

Very good staff members with sincere passion and responsibility in their job.

Boarding was efficient and quick, crew was very attentive, seats were comfortable.

Had a nice little suite although I couldn’t close the door (but I didn’t ask anyone to help). 5K is a nice seat and very private (you look in on first class). Enjoyable flight and nice crew.

Everything you need to know for your flight to Northern Ireland

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to Northern Ireland
Business Class flights to Northern Ireland
Premium Economy Class flights to Northern Ireland
Economy Class flights to Northern Ireland