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 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.

£334 Cheap Flights from Northern Ireland to Illinois in 2026/27

Find the cheapest flights from Northern Ireland to Illinois

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

15:35 - 17:20BHD Belfast City-ORD Chicago O'Hare Intl

31h 45m3 stops Aberdeen Dyce Bergen Flesland Reykjavik Keflavik Intl

19:00 - 20:30ORD Chicago O'Hare Intl-BHD Belfast City

19h 30m2 stops Lisbon Humberto Delgado London Gatwick

£749Multiple Airlines

Wed, 18 Nov - Wed, 2 Dec

14:00 - 17:20BHD Belfast City-ORD Chicago O'Hare Intl

33h 20m3 stops Birmingham Dublin Reykjavik Keflavik Intl

18:30 - 09:20ORD Chicago O'Hare Intl-BHD Belfast City

32h 50m3 stops Reykjavik Keflavik Intl Dublin Edinburgh Turnhouse

£758Multiple Airlines

Tue, 24 Nov - Sat, 28 Nov

06:35 - 18:45BHD Belfast City-ORD Chicago O'Hare Intl

18h 10m1 stop London Heathrow

20:00 - 14:15ORD Chicago O'Hare Intl-BHD Belfast City

12h 15m1 stop London Heathrow

£785Iberia

Sat, 21 Nov - Sat, 28 Nov

12:20 - 19:30BHD Belfast City-ORD Chicago O'Hare Intl

13h 10m1 stop London Heathrow

18:35 - 13:15ORD Chicago O'Hare Intl-BHD Belfast City

12h 40m1 stop London Heathrow

£792British Airways

Wed, 18 Nov - Wed, 2 Dec

09:40 - 20:49BHD Belfast City-ORD Chicago O'Hare Intl

17h 09m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

16:25 - 16:45ORD Chicago O'Hare Intl-BHD Belfast City

18h 20m1 stop Amsterdam Schiphol

£805KLM

Wed, 18 Nov - Wed, 2 Dec

09:40 - 20:49BHD Belfast City-ORD Chicago O'Hare Intl

17h 09m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

11:39 - 09:10ORD Chicago O'Hare Intl-BHD Belfast City

15h 31m2 stops Detroit Metropolitan Wayne County Amsterdam Schiphol

£809KLM

Wed, 18 Nov - Wed, 2 Dec

15:00 - 18:20BHD Belfast City-ORD Chicago O'Hare Intl

33h 20m2 stops Birmingham Dublin

15:55 - 13:10ORD Chicago O'Hare Intl-BHD Belfast City

15h 15m2 stops Dublin Birmingham

£817Aer Lingus

Tue, 24 Nov - Sat, 28 Nov

09:40 - 22:54BHD Belfast City-MDW Chicago Midway

19h 14m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

13:02 - 09:10MDW Chicago Midway-BHD Belfast City

14h 08m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

£820KLM

Wed, 18 Nov - Wed, 2 Dec

09:40 - 23:54BHD Belfast City-ORD Chicago O'Hare Intl

20h 14m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

16:25 - 09:10ORD Chicago O'Hare Intl-BHD Belfast City

10h 45m1 stop Amsterdam Schiphol

£823Delta

Sat, 21 Nov - Sat, 28 Nov

17:15 - 19:55BHD Belfast City-ORD Chicago O'Hare Intl

32h 40m2 stops Amsterdam Schiphol Warsaw Frederic Chopin

21:50 - 09:10ORD Chicago O'Hare Intl-BHD Belfast City

29h 20m2 stops Warsaw Frederic Chopin Amsterdam Schiphol

£845Multiple Airlines

Sat, 21 Nov - Sat, 28 Nov

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British Airways flights from Northern Ireland to Illinois

Our best British Airways deals on Northern Ireland to Illinois flight tickets

British Airways

18 Nov

BHD12:20Belfast City

13h 10m

1 stop

ORD19:30Chicago O'Hare Intl

2 Dec

ORD18:35Chicago O'Hare Intl

12h 40m

1 stop

BHD13:15Belfast City

£792

British Airways

4 Nov

BHD06:35Belfast City

18h 55m

1 stop

ORD19:30Chicago O'Hare Intl

8 Nov

ORD21:50Chicago O'Hare Intl

15h 00m

1 stop

BHD18:50Belfast City

£850

British Airways

5 Nov

BHD06:30Belfast City

19h 00m

1 stop

ORD19:30Chicago O'Hare Intl

9 Nov

ORD14:31Chicago O'Hare Intl

14h 19m

2 stops

BHD10:50Belfast City

£852

KLM flights from Northern Ireland to Illinois

Our best KLM deals on Northern Ireland to Illinois flight tickets

KLM

18 Nov

BHD09:40Belfast City

17h 09m

2 stops

ORD20:49Chicago O'Hare Intl

2 Dec

ORD16:25Chicago O'Hare Intl

18h 20m

1 stop

BHD16:45Belfast City

£805

KLM

18 Nov

BHD09:40Belfast City

17h 09m

2 stops

ORD20:49Chicago O'Hare Intl

2 Dec

ORD11:39Chicago O'Hare Intl

15h 31m

2 stops

BHD09:10Belfast City

£809

KLM

18 Nov

BHD09:40Belfast City

19h 14m

2 stops

MDW22:54Chicago Midway

2 Dec

MDW13:02Chicago Midway

14h 08m

2 stops

BHD09:10Belfast City

£820

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 18/11

15:35-17:20

3 stops31h 45m

Chicago O'Hare Intl

Wed 2/12

19:00-20:30

2 stops19h 30m

£749

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Tue 24/11

14:00-17:20

3 stops33h 20m

Chicago O'Hare Intl

Sat 28/11

18:30-09:20

3 stops32h 50m

£758

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Sat 21/11

06:35-18:45

1 stop18h 10m

Chicago O'Hare Intl

Sat 28/11

20:00-14:15

1 stop12h 15m

£785

Fastest return journey

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 18/11

12:20-19:30

1 stop13h 10m

Chicago O'Hare Intl

Wed 2/12

18:35-13:15

1 stop12h 40m

£792

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 18/11

09:40-20:49

2 stops17h 09m

Chicago O'Hare Intl

Wed 2/12

16:25-16:45

1 stop18h 20m

£805

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 18/11

09:40-20:49

2 stops17h 09m

Chicago O'Hare Intl

Wed 2/12

11:39-09:10

2 stops15h 31m

£809

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Tue 24/11

15:00-18:20

2 stops33h 20m

Chicago O'Hare Intl

Sat 28/11

15:55-13:10

2 stops15h 15m

£817

BelfastChicago

BHD Belfast City - MDW Chicago Midway

BHDMDW

Belfast City

Wed 18/11

09:40-22:54

2 stops19h 14m

Chicago Midway

Wed 2/12

13:02-09:10

2 stops14h 08m

£820

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Sat 21/11

09:40-23:54

2 stops20h 14m

Chicago O'Hare Intl

Sat 28/11

16:25-09:10

1 stop10h 45m

£823

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Sat 21/11

17:15-19:55

2 stops32h 40m

Chicago O'Hare Intl

Sat 28/11

21:50-09:10

2 stops29h 20m

£845

Flights are sorted by cheapest return flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

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

What is the cheapest airline that flies from Northern Ireland to Illinois?

KLM is the most popular carrier operating from Northern Ireland to Illinois

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

Best price found	£334
Fastest flight time	13h 40m
Direct flights	None

The best one-way flight to Illinois from Northern Ireland in the past 72 hours is £334. The best return flight deal from Northern Ireland to Illinois found on momondo in the last 72 hours is £749.

The fastest flight from Northern Ireland to Illinois takes 13h 40m

There are no direct flights from Northern Ireland to Illinois. There are no popular flight routes from Northern Ireland to Illinois.

Search flight deals

Frequently asked questions about flying 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 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.

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.