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Cheap flights from Northern Ireland to Illinois from £253

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 29/1. 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.
Multiple Airlines Logo
08:10 - 17:20
BFS
-
ORD
15h 10m2 stops
Multiple Airlines Logo
18:30 - 17:40
ORD
-
BFS
17h 10m2 stops
£488Multiple Airlines
Sat, 31 Jan - Sat, 7 Feb
Multiple Airlines Logo
21:05 - 14:45
BFS
-
ORD
47h 40m3 stops
Multiple Airlines Logo
07:15 - 15:10
ORD
-
BFS
25h 55m3 stops
£526Multiple Airlines
Fri, 30 Jan - Fri, 6 Feb
Multiple Airlines Logo
21:05 - 14:45
BFS
-
ORD
47h 40m3 stops
Multiple Airlines Logo
21:50 - 22:00
ORD
-
BFS
18h 10m2 stops
£529Multiple Airlines
Fri, 30 Jan - Fri, 6 Feb
British Airways Logo
09:05 - 17:00
BHD
-
ORD
13h 55m1 stop
British Airways Logo
18:25 - 14:15
ORD
-
BHD
13h 50m1 stop
£529British Airways
Thu, 29 Jan - Mon, 2 Feb
British Airways Logo
09:05 - 15:25
BHD
-
ORD
12h 20m1 stop
British Airways Logo
15:21 - 14:15
ORD
-
BHD
16h 54m2 stops
£531British Airways
Thu, 29 Jan - Mon, 2 Feb
British Airways Logo
09:05 - 20:20
BHD
-
ORD
17h 15m2 stops
British Airways Logo
15:21 - 14:15
ORD
-
BHD
16h 54m2 stops
£534British Airways
Thu, 29 Jan - Mon, 2 Feb
British Airways Logo
09:05 - 20:10
BHD
-
ORD
17h 05m2 stops
British Airways Logo
11:44 - 10:40
ORD
-
BHD
16h 56m2 stops
£535British Airways
Thu, 29 Jan - Mon, 2 Feb
Multiple Airlines Logo
10:10 - 14:45
BFS
-
ORD
34h 35m3 stops
Multiple Airlines Logo
18:50 - 22:40
ORD
-
BFS
21h 50m2 stops
£603Multiple Airlines
Sat, 31 Jan - Sat, 7 Feb
Multiple Airlines Logo
10:10 - 14:45
BFS
-
ORD
34h 35m3 stops
Multiple Airlines Logo
18:30 - 22:30
ORD
-
BFS
22h 00m3 stops
£603Multiple Airlines
Sat, 31 Jan - Sat, 7 Feb
British Airways Logo
06:35 - 13:50
BHD
-
ORD
13h 15m1 stop
British Airways Logo
16:14 - 14:15
ORD
-
BHD
16h 01m2 stops
£625British 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
29 Jan
BHD09:05Belfast City
12h 20m
1 stop
ORD15:25Chicago O'Hare Intl
2 Feb
ORD10:10Chicago O'Hare Intl
18h 30m
2 stops
BHD10:40Belfast City
£529
Find similar
British Airways
29 Jan
BHD09:05Belfast City
12h 20m
1 stop
ORD15:25Chicago O'Hare Intl
2 Feb
ORD15:21Chicago O'Hare Intl
16h 54m
2 stops
BHD14:15Belfast City
£531
Find similar
British Airways
29 Jan
BHD09:05Belfast City
17h 15m
2 stops
ORD20:20Chicago O'Hare Intl
2 Feb
ORD15:21Chicago O'Hare Intl
16h 54m
2 stops
BHD14:15Belfast City
£534
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 18 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

Sat 31/1

08:10-17:20

2 stops15h 10m

Chicago O'Hare Intl

Sat 7/2

18:30-17:40

2 stops17h 10m

£488

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 30/1

21:05-14:45

3 stops47h 40m

Chicago O'Hare Intl

Fri 6/2

07:15-15:10

3 stops25h 55m

£526

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 30/1

21:05-14:45

3 stops47h 40m

Chicago O'Hare Intl

Fri 6/2

21:50-22:00

2 stops18h 10m

£529

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 29/1

09:05-17:00

1 stop13h 55m

Chicago O'Hare Intl

Mon 2/2

18:25-14:15

1 stop13h 50m

£529

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 29/1

09:05-15:25

1 stop12h 20m

Chicago O'Hare Intl

Mon 2/2

15:21-14:15

2 stops16h 54m

£531

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 29/1

09:05-20:20

2 stops17h 15m

Chicago O'Hare Intl

Mon 2/2

15:21-14:15

2 stops16h 54m

£534

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 29/1

09:05-20:10

2 stops17h 05m

Chicago O'Hare Intl

Mon 2/2

11:44-10:40

2 stops16h 56m

£535

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 31/1

10:10-14:45

3 stops34h 35m

Chicago O'Hare Intl

Sat 7/2

18:50-22:40

2 stops21h 50m

£603

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 31/1

10:10-14:45

3 stops34h 35m

Chicago O'Hare Intl

Sat 7/2

18:30-22:30

3 stops22h 00m

£603

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 29/1

06:35-13:50

1 stop13h 15m

Chicago O'Hare Intl

Mon 2/2

16:14-14:15

2 stops16h 01m

£625

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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 £592. 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 £826. 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

12h 20m

Direct flights

None
The fastest flight from Northern Ireland to Illinois takes 12h 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 £486Free CancellationRating
6.7
7,585 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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