Cheap flights from Northern Ireland to Illinois from £602
This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to Illinois departing on 21/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Northern Ireland to Illinois
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
Cheap Northern Ireland to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to Illinois
When did momondo last update prices for flights from Northern Ireland to Illinois?
Prices for flights from Northern Ireland to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Northern Ireland to Illinois?
As of July 2025, there is 1 operator available to choose from for flights from Northern Ireland to Illinois.
How old do you have to be to fly from Northern Ireland to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from Northern Ireland to Illinois
Compare and see reviews for airlines that fly from Northern Ireland to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £476 | Free Cancellation | Rating 6.6 7,093 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Northern Ireland to Illinois?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Illinois from Northern Ireland.
Can I find flights from Northern Ireland to Illinois with flexible booking policies on momondo?
All flight searches from Northern Ireland to Illinois on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Northern Ireland to Illinois?
Once you have performed a search for Northern Ireland to Illinois flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Northern Ireland to Illinois right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Illinois, momondo offers a useful price alert feature which will track prices for flights to Illinois from Northern Ireland and alert you when they change.