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Cheap flights from Northern Ireland to Illinois from £333

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 30/4. 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.
Multiple Airlines Logo
22:20 - 15:00
BFS
-
ORD
46h 40m3 stops
Multiple Airlines Logo
18:30 - 19:05
ORD
-
BFS
18h 35m2 stops
£507Multiple Airlines
Mon, 19 Jan - Mon, 26 Jan
Multiple Airlines Logo
22:20 - 15:00
BFS
-
ORD
46h 40m3 stops
Multiple Airlines Logo
16:38 - 20:10
ORD
-
BFS
21h 32m3 stops
£548Multiple Airlines
Mon, 19 Jan - Mon, 26 Jan
American Airlines Logo
06:35 - 17:00
BHD
-
ORD
16h 25m1 stop
American Airlines Logo
21:45 - 18:35
ORD
-
BHD
14h 50m1 stop
£594American Airlines
Mon, 19 Jan - Mon, 26 Jan
Delta Logo
17:20 - 17:45
BHD
-
ORD
30h 25m2 stops
Delta Logo
13:58 - 16:50
ORD
-
BHD
20h 52m2 stops
£603Delta
Mon, 19 Jan - Mon, 26 Jan
British Airways Logo
11:05 - 17:00
BHD
-
ORD
11h 55m1 stop
British Airways Logo
11:44 - 10:40
ORD
-
BHD
16h 56m2 stops
£625British Airways
Thu, 29 Jan - Mon, 2 Feb
British Airways Logo
06:35 - 15:25
BHD
-
ORD
14h 50m1 stop
British Airways Logo
18:25 - 14:15
ORD
-
BHD
13h 50m1 stop
£626British Airways
Thu, 29 Jan - Mon, 2 Feb
Multiple Airlines Logo
06:30 - 17:20
BFS
-
ORD
16h 50m2 stops
Multiple Airlines Logo
18:30 - 20:10
ORD
-
BFS
19h 40m2 stops
£628Multiple Airlines
Mon, 19 Jan - Mon, 26 Jan
British Airways Logo
06:35 - 17:42
BHD
-
ORD
17h 07m2 stops
British Airways Logo
15:21 - 14:15
ORD
-
BHD
16h 54m2 stops
£630British Airways
Thu, 29 Jan - Mon, 2 Feb
British Airways Logo
06:35 - 17:42
BHD
-
ORD
17h 07m2 stops
British Airways Logo
16:14 - 14:15
ORD
-
BHD
16h 01m2 stops
£631British Airways
Thu, 29 Jan - Mon, 2 Feb
Multiple Airlines Logo
13:15 - 17:20
BHD
-
ORD
34h 05m3 stops
Multiple Airlines Logo
18:30 - 20:50
ORD
-
BHD
20h 20m2 stops
£634Multiple Airlines
Mon, 19 Jan - Mon, 26 Jan

American Airlines flights from Northern Ireland to Illinois

Our best American Airlines deals on Northern Ireland to Illinois flight tickets
American Airlines
19 Jan
BHD06:35Belfast City
16h 25m
1 stop
ORD17:00Chicago O'Hare Intl
26 Jan
ORD21:45Chicago O'Hare Intl
14h 50m
1 stop
BHD18:35Belfast City
£594
Find similar
American Airlines
7 Jan
BHD06:35Belfast City
17h 59m
2 stops
ORD18:34Chicago O'Hare Intl
14 Jan
ORD13:34Chicago O'Hare Intl
13h 36m
2 stops
BHD09:10Belfast City
£875
Find similar

British Airways flights from Northern Ireland to Illinois

Our best British Airways deals on Northern Ireland to Illinois flight tickets
British Airways
29 Jan
BHD11:05Belfast City
11h 55m
1 stop
ORD17:00Chicago O'Hare Intl
2 Feb
ORD17:10Chicago O'Hare Intl
15h 05m
1 stop
BHD14:15Belfast City
£625
Find similar
British Airways
29 Jan
BHD06:35Belfast City
14h 50m
1 stop
ORD15:25Chicago O'Hare Intl
2 Feb
ORD18:25Chicago O'Hare Intl
13h 50m
1 stop
BHD14:15Belfast City
£626
Find similar
British Airways
29 Jan
BHD06:35Belfast City
17h 07m
2 stops
ORD17:42Chicago O'Hare Intl
2 Feb
ORD15:21Chicago O'Hare Intl
16h 54m
2 stops
BHD14:15Belfast City
£630
Find similar

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 10 December 2025.
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

BFS - ORD

BFSORD

Belfast Intl

Mon 19/1

22:20-15:00

3 stops46h 40m

Chicago O'Hare Intl

Mon 26/1

18:30-19:05

2 stops18h 35m

£507

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 19/1

22:20-15:00

3 stops46h 40m

Chicago O'Hare Intl

Mon 26/1

16:38-20:10

3 stops21h 32m

£548

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 19/1

06:35-17:00

1 stop16h 25m

Chicago O'Hare Intl

Mon 26/1

21:45-18:35

1 stop14h 50m

£594

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 19/1

17:20-17:45

2 stops30h 25m

Chicago O'Hare Intl

Mon 26/1

13:58-16:50

2 stops20h 52m

£603

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 29/1

11:05-17:00

1 stop11h 55m

Chicago O'Hare Intl

Mon 2/2

11:44-10:40

2 stops16h 56m

£625

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 29/1

06:35-15:25

1 stop14h 50m

Chicago O'Hare Intl

Mon 2/2

18:25-14:15

1 stop13h 50m

£626

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 19/1

06:30-17:20

2 stops16h 50m

Chicago O'Hare Intl

Mon 26/1

18:30-20:10

2 stops19h 40m

£628

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 29/1

06:35-17:42

2 stops17h 07m

Chicago O'Hare Intl

Mon 2/2

15:21-14:15

2 stops16h 54m

£630

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

£631

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 19/1

13:15-17:20

3 stops34h 05m

Chicago O'Hare Intl

Mon 26/1

18:30-20:50

2 stops20h 20m

£634

Flights are sorted by cheapest return flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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 day to depart on your flight to Illinois?

The cheapest day to depart on your flight to Illinois is on a Friday when prices can be found for as low as £595. This is often the case because there is less demand to fly during this day of the week. Flights from Northern Ireland to Illinois on a Saturday will generally be more expensive and average around £829. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

11h 55m

Direct flights

None
The fastest flight from Northern Ireland to Illinois takes 11h 55m
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 £488Free CancellationRating
6.7
7,573 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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