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Cheap flights from Northern Ireland to Illinois from £307

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 12/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
07:55 - 16:45BFS-ORD
14h 50m2 stops
Multiple Airlines Logo
19:20 - 22:25ORD-BFS
21h 05m2 stops
£557Multiple Airlines
Find Deal
Wed, 24 Dec - Wed, 31 Dec
Multiple Airlines Logo
07:55 - 20:00BFS-ORD
42h 05m3 stops
Multiple Airlines Logo
18:30 - 22:25ORD-BFS
21h 55m2 stops
£597Multiple Airlines
Find Deal
Wed, 24 Dec - Wed, 31 Dec
American Airlines Logo
09:05 - 15:25BHD-ORD
12h 20m1 stop
American Airlines Logo
19:45 - 14:15ORD-BHD
13h 30m1 stop
£623American Airlines
Find Deal
Thu, 5 Mar - Mon, 9 Mar
American Airlines Logo
06:35 - 17:00BHD-ORD
16h 25m1 stop
American Airlines Logo
19:45 - 14:15ORD-BHD
13h 30m1 stop
£625American Airlines
Find Deal
Thu, 5 Mar - Mon, 9 Mar
American Airlines Logo
06:35 - 17:58BHD-ORD
17h 23m2 stops
American Airlines Logo
17:31 - 14:15ORD-BHD
15h 44m2 stops
£630American Airlines
Find Deal
Thu, 5 Mar - Mon, 9 Mar
Multiple Airlines Logo
07:55 - 20:00BFS-ORD
42h 05m3 stops
Multiple Airlines Logo
18:30 - 22:20ORD-BFS
21h 50m3 stops
£666Multiple Airlines
Find Deal
Wed, 24 Dec - Wed, 31 Dec
Multiple Airlines Logo
06:30 - 17:05BFS-ORD
40h 35m3 stops
Multiple Airlines Logo
16:20 - 22:00ORD-BFS
23h 40m3 stops
£879Multiple Airlines
Find Deal
Fri, 26 Dec - Fri, 2 Jan
Multiple Airlines Logo
07:00 - 20:05BFS-ORD
19h 05m2 stops
Multiple Airlines Logo
16:20 - 22:00ORD-BFS
23h 40m3 stops
£949Multiple Airlines
Find Deal
Fri, 26 Dec - Fri, 2 Jan
Multiple Airlines Logo
22:25 - 14:00BFS-ORD
21h 35m2 stops
Multiple Airlines Logo
11:50 - 21:40ORD-BFS
27h 50m2 stops
£1,020Multiple Airlines
Find Deal
Sat, 27 Dec - Sat, 3 Jan
Multiple Airlines Logo
08:30 - 13:10BFS-ORD
34h 40m3 stops
Multiple Airlines Logo
16:20 - 22:30ORD-BFS
24h 10m2 stops
£1,055Multiple Airlines
Find Deal
Sat, 27 Dec - Sat, 3 Jan

American Airlines flights from Northern Ireland to Illinois

Our best American Airlines deals on Northern Ireland to Illinois flight tickets
American Airlines
5 Mar
BHD09:05Belfast City
12h 20m
1 stop
ORD15:25Chicago O'Hare Intl
9 Mar
ORD19:45Chicago O'Hare Intl
13h 30m
1 stop
BHD14:15Belfast City
£623
Find similar
American Airlines
5 Mar
BHD09:05Belfast City
13h 55m
1 stop
ORD17:00Chicago O'Hare Intl
9 Mar
ORD13:10Chicago O'Hare Intl
16h 30m
2 stops
BHD10:40Belfast City
£625
Find similar
American Airlines
5 Mar
BHD06:35Belfast City
17h 23m
2 stops
ORD17:58Chicago O'Hare Intl
9 Mar
ORD17:31Chicago O'Hare Intl
15h 44m
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 13 November 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

Wed 24/12

07:55-16:45

2 stops14h 50m

Chicago O'Hare Intl

Wed 31/12

19:20-22:25

2 stops21h 05m

£557

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 24/12

07:55-20:00

3 stops42h 05m

Chicago O'Hare Intl

Wed 31/12

18:30-22:25

2 stops21h 55m

£597

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 5/3

09:05-15:25

1 stop12h 20m

Chicago O'Hare Intl

Mon 9/3

19:45-14:15

1 stop13h 30m

£623

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 5/3

06:35-17:00

1 stop16h 25m

Chicago O'Hare Intl

Mon 9/3

19:45-14:15

1 stop13h 30m

£625

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 5/3

06:35-17:58

2 stops17h 23m

Chicago O'Hare Intl

Mon 9/3

17:31-14:15

2 stops15h 44m

£630

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 24/12

07:55-20:00

3 stops42h 05m

Chicago O'Hare Intl

Wed 31/12

18:30-22:20

3 stops21h 50m

£666

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 26/12

06:30-17:05

3 stops40h 35m

Chicago O'Hare Intl

Fri 2/1

16:20-22:00

3 stops23h 40m

£879

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 26/12

07:00-20:05

2 stops19h 05m

Chicago O'Hare Intl

Fri 2/1

16:20-22:00

3 stops23h 40m

£949

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 27/12

22:25-14:00

2 stops21h 35m

Chicago O'Hare Intl

Sat 3/1

11:50-21:40

2 stops27h 50m

£1,020

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 27/12

08:30-13:10

3 stops34h 40m

Chicago O'Hare Intl

Sat 3/1

16:20-22:30

2 stops24h 10m

£1,055

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 £603. 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 £841. 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

Direct flights

None
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 £495Free CancellationRating
6.7
7,515 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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