How long is the flight from Northern Ireland to Illinois?

Departing from Northern Ireland to Illinois will take you 18h 30m. There are 3647 mi between Northern Ireland and Illinois.

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What is the cheapest time of day to fly from NIR to IL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to Illinois as you normally would.

Can I find deals for flights from Northern Ireland to Illinois that include hotel bookings?

Yes. In addition to deals on Northern Ireland to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Northern Ireland to Illinois?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Illinois.

Can I find deals for business class flights from Northern Ireland to Illinois?

Yes. Cheapflights offers flight deals from Northern Ireland to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£781+ Cheap Flights from Northern Ireland to Illinois

Cheap flight deals from Northern Ireland to Illinois

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Cheapest flights from Northern Ireland to Illinois
Explore the most affordable flight options available from Northern Ireland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 October 2026.

Thu 29/1009:40 -

2 stops17h 53m

Tue 3/1109:29 -

2 stops17h 41m

Deal found 29/9£868

Mon 2/1109:40 -

2 stops18h 53m

Fri 6/1111:39 -

2 stops15h 31m

Deal found 29/9£7,778

Find flight deals from Northern Ireland to Illinois

Round-trip from	£722

Delta
1/2-5/2
4 total stops
40h 20m total
Northern Ireland to Illinois

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Use the filters below to find and compare flights from Northern Ireland to Illinois that are best for you.

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Route

Depart

Return

Price

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BelfastChicago

BHD Belfast City - MDW Chicago Midway

BHDMDW

Belfast City

Wed 20/1

09:40-22:10

2 stops18h 30m

Chicago Midway

Sun 24/1

12:30-09:10

2 stops14h 40m

£781

BelfastChicago

BHD Belfast City - MDW Chicago Midway

BHDMDW

Belfast City

Thu 29/10

09:40-22:33

2 stops17h 53m

Chicago Midway

Tue 3/11

09:29-09:10

2 stops17h 41m

£868

BelfastChicago

BHD Belfast City - MDW Chicago Midway

BHDMDW

Belfast City

Mon 2/11

09:40-22:33

2 stops18h 53m

Chicago Midway

Fri 6/11

11:39-09:10

2 stops15h 31m

£7,778

Flights are sorted by cheapest return flights first.

Deals found on 1/10

Sorted by cheapest first

Best time to book a flight from Northern Ireland to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Northern Ireland with our price prediction graph.

BHD-MDW

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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Everything you need to know about your flight from Northern Ireland to Illinois

GBNIR-USIL

BHD-MDW

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from Northern Ireland to Illinois?
Departing from Northern Ireland to Illinois will take you 18h 30m. There are 3647 mi between Northern Ireland and Illinois.
Can I find deals for flights from Northern Ireland to Illinois that include hotel bookings?
Yes. In addition to deals on Northern Ireland to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Northern Ireland to Illinois?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Illinois.
Can I find deals for business class flights from Northern Ireland to Illinois?
Yes. Cheapflights offers flight deals from Northern Ireland to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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How does Cheapflights help users find flights from Northern Ireland to Illinois?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Illinois from Northern Ireland today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Illinois?

Millions of users choose and trust Cheapflights to book the best flight deals from Northern Ireland to Illinois for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Northern Ireland to Illinois with no change fees?

Certainly. Search results for flights to Illinois from Northern Ireland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Northern Ireland to Illinois become cheaper?

Not ready to book yet? You can track prices for flights from Northern Ireland to Illinois on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Northern Ireland to Illinois from £781

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Northern Ireland to Illinois

Cheapest flights from Northern Ireland to IllinoisExplore the most affordable flight options available from Northern Ireland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 October 2026.

Explore the most affordable flight options available from Northern Ireland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 October 2026.

Best flights from Northern Ireland to IllinoisDiscover carefully curated flight deals from Northern Ireland to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 3 October 2026.

Discover carefully curated flight deals from Northern Ireland to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 3 October 2026.

Last-minute flights from Northern Ireland to IllinoisDiscover last-minute flight deals from Northern Ireland to Illinois. Data last updated 3 October 2026 and is based on user searches.

Discover last-minute flight deals from Northern Ireland to Illinois. Data last updated 3 October 2026 and is based on user searches.

Find flight deals from Northern Ireland to Illinois

Round-trip from

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Use the filters below to find and compare flights from Northern Ireland to Illinois that are best for you.

Best time to book a flight from Northern Ireland to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Northern Ireland with our price prediction graph.

Cheapflights Insights

Related info for your journey

How long is the flight from Northern Ireland to Illinois?

Can I find deals for flights from Northern Ireland to Illinois that include hotel bookings?

How can I find direct flights from Northern Ireland to Illinois?

Can I find deals for business class flights from Northern Ireland to Illinois?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Northern Ireland to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Illinois by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from Northern Ireland to Illinois by cabin class

Find flights from Northern Ireland to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Northern Ireland and Illinois flights

Browse other Northern Ireland and Illinois flight options. Last updated on 3 October 2026.

Popular flight searches

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Northern Ireland to Illinois flights

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Fly with Cheapflights

How does Cheapflights help users find flights from Northern Ireland to Illinois?

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Illinois?

Can Cheapflights find flights from Northern Ireland to Illinois with no change fees?

Can Cheapflights notify me if prices for flights from Northern Ireland to Illinois become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Northern Ireland to Illinois
Explore the most affordable flight options available from Northern Ireland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 October 2026.

Best flights from Northern Ireland to Illinois
Discover carefully curated flight deals from Northern Ireland to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 3 October 2026.

Last-minute flights from Northern Ireland to Illinois
Discover last-minute flight deals from Northern Ireland to Illinois. Data last updated 3 October 2026 and is based on user searches.