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.

£316 Cheap Flights from Northern Ireland to Illinois in 2026

Find the cheapest flights from Northern Ireland to Illinois

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

09:10 - 14:00

BFS

ORD

34h 50m

2 stops

19:25 - 22:20

ORD

BFS

20h 55m

2 stops

£596Multiple Airlines

Mon, 21 Sep - Wed, 30 Sep

21:35 - 20:12

BFS

ORD

28h 37m

3 stops

19:25 - 16:15

ORD

BFS

14h 50m

2 stops

£632Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

21:25 - 19:48

BFS

ORD

28h 23m

3 stops

19:25 - 20:40

ORD

BFS

19h 15m

2 stops

£635Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

21:35 - 20:12

BFS

ORD

28h 37m

3 stops

19:25 - 22:00

ORD

BFS

20h 35m

3 stops

£639Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

21:35 - 19:48

BFS

ORD

28h 13m

2 stops

19:25 - 20:40

ORD

BFS

19h 15m

2 stops

£642Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

21:35 - 19:48

BFS

ORD

28h 13m

2 stops

19:25 - 20:40

ORD

BFS

19h 15m

2 stops

£645Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

11:35 - 18:15

BHD

ORD

12h 40m

1 stop

17:00 - 13:35

ORD

BHD

14h 35m

1 stop

£689British Airways

Mon, 21 Sep - Wed, 30 Sep

09:40 - 21:12

BHD

ORD

17h 32m

2 stops

19:05 - 12:00

ORD

BHD

10h 55m

1 stop

£694British Airways

Mon, 21 Sep - Wed, 30 Sep

09:50 - 22:32

BHD

ORD

18h 42m

2 stops

12:29 - 09:20

ORD

BHD

14h 51m

2 stops

£739KLM

Fri, 25 Sep - Tue, 29 Sep

06:50 - 19:15

BHD

ORD

18h 25m

2 stops

15:45 - 13:10

ORD

BHD

15h 25m

2 stops

£782Aer Lingus

Sun, 23 Aug - Sun, 30 Aug

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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

21 Sept

BHD11:35Belfast City

12h 40m

1 stop

ORD18:15Chicago O'Hare Intl

30 Sept

ORD17:00Chicago O'Hare Intl

14h 35m

1 stop

BHD13:35Belfast City

£689

British Airways

21 Sept

BHD09:40Belfast City

17h 32m

2 stops

ORD21:12Chicago O'Hare Intl

30 Sept

ORD19:05Chicago O'Hare Intl

10h 55m

1 stop

BHD12:00Belfast City

£694

British Airways

25 Sept

BHD06:30Belfast City

15h 25m

1 stop

ORD15:55Chicago O'Hare Intl

29 Sept

ORD19:05Chicago O'Hare Intl

14h 15m

1 stop

BHD15:20Belfast City

£711

KLM flights from Northern Ireland to Illinois

Our best KLM deals on Northern Ireland to Illinois flight tickets

KLM

25 Sept

BHD09:50Belfast City

18h 42m

2 stops

ORD22:32Chicago O'Hare Intl

29 Sept

ORD12:29Chicago O'Hare Intl

14h 51m

2 stops

BHD09:20Belfast City

£739

KLM

23 Aug

BHD17:30Belfast City

27h 00m

1 stop

ORD14:30Chicago O'Hare Intl

30 Aug

ORD16:20Chicago O'Hare Intl

11h 00m

1 stop

BHD09:20Belfast City

£992

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 21/9

09:10-14:00

2 stops34h 50m

Chicago O'Hare Intl

Wed 30/9

19:25-22:20

2 stops20h 55m

£596

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 7/9

21:35-20:12

3 stops28h 37m

Chicago O'Hare Intl

Mon 14/9

19:25-16:15

2 stops14h 50m

£632

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 7/9

21:25-19:48

3 stops28h 23m

Chicago O'Hare Intl

Mon 14/9

19:25-20:40

2 stops19h 15m

£635

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 7/9

21:35-20:12

3 stops28h 37m

Chicago O'Hare Intl

Mon 14/9

19:25-22:00

3 stops20h 35m

£639

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 7/9

21:35-19:48

2 stops28h 13m

Chicago O'Hare Intl

Mon 14/9

19:25-20:40

2 stops19h 15m

£642

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 7/9

21:35-19:48

2 stops28h 13m

Chicago O'Hare Intl

Mon 14/9

19:25-20:40

2 stops19h 15m

£645

Fastest return journey

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 21/9

11:35-18:15

1 stop12h 40m

Chicago O'Hare Intl

Wed 30/9

17:00-13:35

1 stop14h 35m

£689

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 21/9

09:40-21:12

2 stops17h 32m

Chicago O'Hare Intl

Wed 30/9

19:05-12:00

1 stop10h 55m

£694

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 25/9

09:50-22:32

2 stops18h 42m

Chicago O'Hare Intl

Tue 29/9

12:29-09:20

2 stops14h 51m

£739

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 23/8

06:50-19:15

2 stops18h 25m

Chicago O'Hare Intl

Sun 30/8

15:45-13:10

2 stops15h 25m

£782

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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?

British Airways and Aer Lingus are the most popular carriers 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

Fastest flight time	12h 40m
Direct flights	None

The fastest flight from Northern Ireland to Illinois takes 12h 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.