$341 Find Cheap Flights from Illinois to Northern Ireland

1 adult
1 adult, Economy

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Cheapest flight$341
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 60% of all flights arriving there.

  • What is the cheapest day to fly to Northern Ireland?

    Based on KAYAK data, the cheapest day to fly to Northern Ireland is Sunday where round-trip tickets can be as cheap as $718. On the other hand, the most expensive day to fly is Thursday, where round-trip prices are $853 on average.

  • What is the cheapest time of day to fly to Northern Ireland?

    The cheapest time of day to fly to Northern Ireland is generally at night, when round-trip flights cost $751 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Northern Ireland is generally in the evening, which is peak travel time and where the average cost of a ticket is $782.

  • How long is the flight to Northern Ireland?

    An average nonstop flight from Illinois to Northern Ireland takes 18h 04m, 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 10h 55m.

  • 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.
6.6
British AirwaysOverall score based on 7222 reviews
6.4Entertainment
7.6Crew
6.9Boarding
6.7Comfort
6.3Food
Airline reviews

Flight was delayed. Though I checked in with BA live chat three times, our special meals were not provided.

4.0 OkayAnonymous, Jul 2025DEN - LHR
Read more British Airways reviews

Flight was delayed. Though I checked in with BA live chat three times, our special meals were not provided.

My experience with British Airways is excellent, thanks for all 🫶🏻✈️

Old tired plane, Uncomfortable business class seat. Breakfast dreadful and meagre. At least flight was on time!

The crew is very friendly and helpful. The food is good for airplane food. The flight is long and hard to sleep. The leg space is great. The plane arrived in plenty of time.

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

Captain sick. Unable to get replacement so delayed me 30 hours, many others delayed 54 hours. TOTALLY DESTROYED ALL MY PLANS, including lost my rental car which would now cost over 5 times what I paid so stuck with buses n trains... lost hotel reservations.... HORRIBLE!!!

They’ve lost my bag and I have no way of really getting in touch with anyone and have received no updates.

Very crowded, no real explanation of food "chicken or pasta?" After dinner no drinks service. Plane was clean, but little help with finding soaces fir luggage to get into overhead bins. Many passengers putting 2 bags, hats, duty free in overhead bins so no space for roll ons

Flight was good but seat in 12D was not comfortable, better on the Airbus 321 from Tampa to Charlotte. No breakfast was served before landing in zLonfon only a coffee and orange juice.

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

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
Prem Econ Class flights to Northern Ireland
Economy Class flights to Northern Ireland

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