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Cheap flights from Northern Ireland to Illinois from £366

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to Illinois departing on 19/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Northern Ireland to Illinois

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
19:35 - 14:55
BHD
-
ORD
25h 20m
2 stops
British Airways Logo
17:10 - 14:15
ORD
-
BHD
15h 05m
1 stop
£509British Airways
Fri, 6 Feb - Mon, 9 Feb
British Airways Logo
06:45 - 13:50
BHD
-
ORD
13h 05m
1 stop
British Airways Logo
17:10 - 10:40
ORD
-
BHD
11h 30m
1 stop
£515British Airways
Fri, 6 Feb - Mon, 9 Feb
British Airways Logo
11:05 - 18:45
BHD
-
ORD
13h 40m
1 stop
British Airways Logo
11:44 - 10:40
ORD
-
BHD
16h 56m
2 stops
£532British Airways
Thu, 29 Jan - Mon, 2 Feb
British Airways Logo
06:35 - 17:42
BHD
-
ORD
17h 07m
2 stops
British Airways Logo
16:14 - 14:15
ORD
-
BHD
16h 01m
2 stops
£536British Airways
Thu, 29 Jan - Mon, 2 Feb

British Airways flights from Northern Ireland to Illinois

Our best British Airways deals on Northern Ireland to Illinois flight tickets
British Airways
6 Feb
BHD19:35Belfast City
25h 20m
2 stops
ORD14:55Chicago O'Hare Intl
9 Feb
ORD17:10Chicago O'Hare Intl
15h 05m
1 stop
BHD14:15Belfast City
£509
British Airways
6 Feb
BHD06:45Belfast City
13h 05m
1 stop
ORD13:50Chicago O'Hare Intl
9 Feb
ORD17:10Chicago O'Hare Intl
11h 30m
1 stop
BHD10:40Belfast City
£515
British Airways
29 Jan
BHD11:05Belfast City
13h 40m
1 stop
ORD18:45Chicago O'Hare Intl
2 Feb
ORD11:44Chicago O'Hare Intl
16h 56m
2 stops
BHD10:40Belfast City
£532

momondo Fare Finder

 
Customise your flight search to find flights from Northern Ireland to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 13 January 2026.
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

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 6/2

19:35-14:55

2 stops25h 20m

Chicago O'Hare Intl

Mon 9/2

17:10-14:15

1 stop15h 05m

£509

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 6/2

06:45-13:50

1 stop13h 05m

Chicago O'Hare Intl

Mon 9/2

17:10-10:40

1 stop11h 30m

£515

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 29/1

11:05-18:45

1 stop13h 40m

Chicago O'Hare Intl

Mon 2/2

11:44-10:40

2 stops16h 56m

£532

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 29/1

06:35-17:42

2 stops17h 07m

Chicago O'Hare Intl

Mon 2/2

16:14-14:15

2 stops16h 01m

£536

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 19/1

22:20-20:00

3 stops51h 40m

£366

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 19/1

07:20-08:18

3 stops54h 58m

£424

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 19/1

19:20-17:20

2 stops52h 00m

£441

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 19/1

18:50-19:15

2 stops30h 25m

£455

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 19/1

09:15-15:25

1 stop12h 10m

£841

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Illinois from

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?

Aer Lingus 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

Fastest flight time

25h 20m

Direct flights

None
The fastest flight from Northern Ireland to Illinois takes 25h 20m
There are no direct flights from Northern Ireland to Illinois. There are no popular flight routes from Northern Ireland to Illinois.
Search flight deals

  • 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?

  • 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
British AirwaysPriceFrom £483Free CancellationRating
6.7
7,665 reviews
Search British Airways flights

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.

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