How long is the flight from Illinois to Northern Ireland?

Airlines like British Airways, Delta, and KLM fly from Illinois to Northern Ireland in about 12h 15m. The time it takes to get you to your destination can typically vary by up to 6h 10m. Airlines will cover a distance of 3644 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Northern Ireland, 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 16.0 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 IL to NIR?

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

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

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

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

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

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

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

£339+ Cheap Flights from Illinois to Northern Ireland

Cheap flight deals from Illinois to Northern Ireland

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Illinois to Northern Ireland
Explore the most affordable flight options available from Illinois to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Mon 5/1016:50 -

1 stop10h 30m

Mon 12/1008:45 -

2 stops16h 30m

Deal found 21/8£548

Mon 5/1019:25 -

3 stops42h 25m

Mon 12/1012:45 -

3 stops36h 30m

Deal found 21/8£590

Sun 13/919:25 -

2 stops20h 25m

Tue 29/907:35 -

3 stops38h 25m

Deal found 17/8£598

Sun 15/1117:10 -

1 stop11h 35m

Thu 19/1107:40 -

1 stop12h 05m

Deal found 17/8£657

Sun 4/1019:25 -

2 stops20h 25m

Sun 11/1007:10 -

2 stops20h 15m

Deal found 20/8£658

Mon 23/1116:25 -

1 stop10h 45m

Wed 2/1217:20 -

1 stop27h 05m

Deal found 17/8£663

Mon 23/1116:25 -

1 stop10h 45m

Thu 3/1209:40 -

2 stops16h 45m

Deal found 17/8£670

Mon 23/1110:30 -

2 stops16h 40m

Fri 27/1109:40 -

2 stops16h 45m

Deal found 17/8£673

Mon 14/919:25 -

2 stops14h 50m

Tue 29/906:40 -

3 stops39h 20m

Deal found 18/8£684

Mon 5/1016:50 -

1 stop10h 30m

Mon 12/1017:30 -

1 stop26h 45m

Deal found 21/8£689

Fri 9/1022:25 -

2 stops16h 05m

Tue 20/1007:50 -

3 stops41h 25m

Deal found 18/8£692

Thu 26/1117:10 -

1 stop13h 35m

Thu 3/1207:40 -

1 stop12h 05m

Deal found 17/8£693

Best flights from Illinois to Northern Ireland
Discover carefully curated flight deals from Illinois to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Mon 5/1019:25 -

3 stops42h 25m

Mon 12/1012:45 -

3 stops36h 30m

Deal found 21/8£590

Mon 23/1121:50 -

1 stop12h 15m

Fri 27/1106:45 -

1 stop13h 00m

Deal found 17/8£657

Wed 25/1111:29 -

2 stops15h 41m

Wed 2/1217:20 -

1 stop27h 05m

Deal found 17/8£667

Mon 5/1019:01 -

2 stops15h 54m

Mon 12/1009:50 -

2 stops18h 43m

Deal found 21/8£788

Sun 13/919:25 -

2 stops20h 25m

Tue 29/907:35 -

3 stops38h 25m

Deal found 17/8£598

Sun 15/1117:10 -

1 stop11h 35m

Thu 19/1107:40 -

1 stop12h 05m

Deal found 17/8£657

Mon 23/1116:25 -

1 stop18h 25m

Fri 27/1109:40 -

2 stops16h 45m

Deal found 17/8£670

Sun 4/1019:25 -

2 stops20h 25m

Sun 11/1007:10 -

2 stops20h 15m

Deal found 20/8£658

Fri 27/1117:10 -

1 stop11h 45m

Thu 3/1220:00 -

1 stop23h 45m

Deal found 17/8£693

Sat 28/1117:13 -

2 stops17h 37m

Wed 2/1217:20 -

1 stop27h 05m

Deal found 17/8£703

Mon 14/919:25 -

2 stops14h 50m

Tue 29/906:40 -

3 stops39h 20m

Deal found 18/8£684

Wed 25/1116:25 -

1 stop10h 45m

Mon 30/1117:20 -

2 stops29h 04m

Deal found 17/8£709

Fri 9/1019:05 -

1 stop17h 05m

Tue 20/1006:30 -

1 stop17h 45m

Deal found 18/8£723

Fri 2/1021:15 -

1 stop14h 55m

Fri 9/1006:30 -

1 stop17h 45m

Deal found 18/8£753

Sun 3/117:10 -

1 stop11h 35m

Sat 3/707:05 -

1 stop12h 45m

Deal found 18/8£811

Mon 18/107:29 -

2 stops21h 21m

Fri 22/106:45 -

2 stops15h 58m

Deal found 16/8£844

Sat 3/1015:54 -

2 stops15h 41m

Sat 10/1008:30 -

2 stops21h 24m

Deal found 19/8£1,025

Sun 4/1015:30 -

2 stops24h 20m

Sun 11/1022:05 -

2 stops21h 55m

Deal found 20/8£1,072

Fri 11/921:35 -

1 stop17h 00m

Fri 25/911:00 -

2 stops19h 27m

Deal found 19/8£1,032

Fri 11/908:55 -

3 stops30h 20m

Fri 25/906:05 -

3 stops37h 55m

Deal found 19/8£1,158

Fri 2/1012:35 -

2 stops22h 20m

Fri 9/1009:50 -

2 stops18h 43m

Deal found 18/8£1,559

Fri 11/921:35 -

2 stops17h 25m

Fri 25/907:00 -

3 stops37h 00m

Deal found 19/8£1,315

Thu 1/1019:01 -

2 stops15h 54m

Thu 8/1009:50 -

2 stops18h 43m

Deal found 17/8£1,880

Sun 3/109:30 -

2 stops17h 40m

Sat 3/709:55 -

2 stops18h 15m

Deal found 18/8£2,725

Find flight deals from Illinois to Northern Ireland

Round-trip from	£590
One-way from	£339

5/10-12/10
6 total stops
78h 55m total
Illinois to Northern Ireland

Search Deals

Aer Lingus
8/9
2 total stops
17h 55m total
Illinois to Northern Ireland

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Mon 5/10

19:25-19:50

3 stops42h 25m

Belfast Intl

Mon 12/10

12:45-19:15

3 stops36h 30m

£590

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sun 13/9

19:25-21:50

2 stops20h 25m

Belfast Intl

Tue 29/9

07:35-16:00

3 stops38h 25m

£598

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Mon 23/11

21:50-16:05

1 stop12h 15m

Belfast City

Fri 27/11

06:45-13:45

1 stop13h 00m

£657

Fastest return journey

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Sun 15/11

17:10-10:45

1 stop11h 35m

Belfast City

Thu 19/11

07:40-13:45

1 stop12h 05m

£657

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sun 4/10

19:25-21:50

2 stops20h 25m

Belfast Intl

Sun 11/10

07:10-21:25

2 stops20h 15m

£658

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Wed 25/11

11:29-09:10

2 stops15h 41m

Belfast City

Wed 2/12

17:20-14:25

1 stop27h 05m

£667

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Mon 23/11

16:25-16:50

1 stop18h 25m

Belfast City

Fri 27/11

09:40-20:25

2 stops16h 45m

£670

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Mon 14/9

19:25-16:15

2 stops14h 50m

Belfast Intl

Tue 29/9

06:40-16:00

3 stops39h 20m

£684

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Fri 27/11

17:10-10:55

1 stop11h 45m

Belfast City

Thu 3/12

20:00-13:45

1 stop23h 45m

£693

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Sat 28/11

17:13-16:50

2 stops17h 37m

Belfast City

Wed 2/12

17:20-14:25

1 stop27h 05m

£703

Flights are sorted by cheapest return flights first.

Deals found on 18/8

Showing 1-10 of 30 resultsSorted by cheapest first

Best time to book a flight from Illinois to Northern Ireland

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

ORD-BHD

MDW-BHD

ORD-BFS

STL-BHD

STL-BFS

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.

Cheapflights Insights

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

USIL-GBNIR

ORD-BHD

MDW-BHD

ORD-BFS

STL-BHD

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

Related info for your journey

How long is the flight from Illinois to Northern Ireland?
Airlines like British Airways, Delta, and KLM fly from Illinois to Northern Ireland in about 12h 15m. The time it takes to get you to your destination can typically vary by up to 6h 10m. Airlines will cover a distance of 3644 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
Can I find deals for flights from Illinois to Northern Ireland that include hotel bookings?
Yes. In addition to deals on Illinois to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Illinois to Northern Ireland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Northern Ireland.
Can I find deals for business class flights from Illinois to Northern Ireland?
Yes. Cheapflights offers flight deals from Illinois to Northern Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Direct flights to United Kingdom

Flights by cabin class

Other flight options

Popular flights

Return Flight Options

Top destinations

Alternative routes for Illinois to Northern Ireland

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O'Hare Intl to Gatwick flights

Newark to Edinburgh flights

Los Angeles to London City flights

George Bush Intcntl to Heathrow flights

San Francisco to Gatwick flights

Sky Harbor Intl to Heathrow flights

O'Hare Intl to Stansted flights

John F Kennedy Intl to Edinburgh flights

O'Hare Intl to London City flights

San Francisco to London City flights

Boston to Luton flights

Raleigh to Heathrow flights

San Francisco to Stansted flights

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

Cheapflights helps you search for flights from Illinois to Northern Ireland via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Northern Ireland from Illinois.

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

Yes, we can. To see specific flights from Illinois to Northern Ireland with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Of course! You can now track prices for flights from Illinois to Northern Ireland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Illinois to Northern Ireland from £339

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Illinois to Northern Ireland

Cheapest flights from Illinois to Northern IrelandExplore the most affordable flight options available from Illinois to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Explore the most affordable flight options available from Illinois to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Best flights from Illinois to Northern IrelandDiscover carefully curated flight deals from Illinois to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Discover carefully curated flight deals from Illinois to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from Illinois to Northern IrelandDiscover last-minute flight deals from Illinois to Northern Ireland. Data last updated 21 August 2026 and is based on user searches.

Discover last-minute flight deals from Illinois to Northern Ireland. Data last updated 21 August 2026 and is based on user searches.

One-way flights from Illinois to Northern IrelandSearch for one-way flight options from Illinois to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

Search for one-way flight options from Illinois to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

Find flight deals from Illinois to Northern Ireland

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

Best time to book a flight from Illinois to Northern Ireland

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

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Related info for your journey

How long is the flight from Illinois to Northern Ireland?

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

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

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

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 Illinois to Northern Ireland

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

Complete your trip

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

Direct flights to United Kingdom

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

Search flights from Illinois to Northern Ireland by cabin class

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

Illinois and Northern Ireland flights

Browse other Illinois and Northern Ireland flight options. Last updated on 21 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Find a return flight route from Northern Ireland

Find the right flight back to Illinois after your stay in Northern Ireland

Illinois to Northern Ireland flights

Consider these flights travelling from Illinois to Northern Ireland.

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

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

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

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Cheapest flights from Illinois to Northern Ireland
Explore the most affordable flight options available from Illinois to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Best flights from Illinois to Northern Ireland
Discover carefully curated flight deals from Illinois to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from Illinois to Northern Ireland
Discover last-minute flight deals from Illinois to Northern Ireland. Data last updated 21 August 2026 and is based on user searches.

One-way flights from Illinois to Northern Ireland
Search for one-way flight options from Illinois to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.