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$436+ Cheap flights from Northern Ireland to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap flight deals from Northern Ireland to Illinois

Cheapest flights from Northern Ireland to Illinois
Explore the most affordable flight options available from Northern Ireland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.

This British Airways deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/58:00 pm
BHD
-
ORD
2 stops24h 55m
British Airways
Mon 2/96:25 pm
ORD
-
BHD
1 stop13h 50m
British Airways
Deal found 1/26$721
This American Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/269:05 am
BHD
-
ORD
1 stop13h 55m
American Airlines
Mon 3/29:45 pm
ORD
-
BHD
1 stop12h 20m
American Airlines
Deal found 1/28$856
This American Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/274:15 pm
BHD
-
ORD
1 stop27h 35m
American Airlines
Mon 7/205:34 pm
ORD
-
BHD
2 stops13h 21m
American Airlines
Deal found 1/27$857
This Virgin Atlantic deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/265:20 pm
BHD
-
ORD
1 stop27h 00m
Virgin Atlantic
Mon 3/210:36 am
ORD
-
BHD
2 stops24h 09m
Virgin Atlantic
Deal found 1/28$862
This American Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/111:35 am
BHD
-
ORD
2 stops15h 47m
American Airlines
Tue 7/2110:35 pm
ORD
-
BHD
1 stop13h 00m
American Airlines
Deal found 1/27$863
This Delta deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:30 am
BHD
-
ORD
2 stops17h 13m
Delta
Mon 3/22:12 pm
ORD
-
BHD
2 stops20h 33m
Delta
Deal found 1/28$867
This American Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/299:40 am
BHD
-
ORD
2 stops17h 42m
American Airlines
Wed 7/227:05 pm
ORD
-
BHD
1 stop18h 45m
American Airlines
Deal found 1/27$874
This British Airways deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/286:30 am
BHD
-
ORD
2 stops22h 51m
British Airways
Mon 7/2010:35 pm
ORD
-
BHD
1 stop14h 50m
British Airways
Deal found 1/27$882
This British Airways deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/286:30 am
BHD
-
ORD
2 stops23h 56m
British Airways
Sat 7/2510:35 pm
ORD
-
BHD
1 stop28h 05m
British Airways
Deal found 1/27$893
This American Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/24:35 pm
BHD
-
ORD
1 stop27h 15m
American Airlines
Sat 7/256:20 pm
ORD
-
BHD
1 stop12h 05m
American Airlines
Deal found 1/27$894
This British Airways deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/37:00 am
BHD
-
ORD
2 stops14h 55m
British Airways
Tue 7/2110:35 pm
ORD
-
BHD
1 stop14h 20m
British Airways
Deal found 1/27$909
This Booking.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/139:30 pm
BFS
-
ORD
3 stops47h 15m
Multiple Airlines
Fri 3/207:15 am
ORD
-
BFS
3 stops26h 55m
Multiple Airlines
Deal found 1/27$979

Find flight deals from Northern Ireland to Illinois

Keep the following information in mind while searching for Northern Ireland to Illinois flight deals. Data was last updated January 28, 2026.

Round-trip from

$856
(American Airlines)

One-way from

$436
(Kiwi.com)
From Northern Ireland to Illinois
Search Deals
One-way flight from Northern Ireland to Illinois
Search Deals

Cheapflights Fare Finder

 
Customize 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, Cheapflights users made 2,558,603 searches. Data last updated January 28, 2026.
Use the filters below to find and compare flights from Northern Ireland to Illinois that are best for you.

Fly from

Northern Ireland

Fly to

Illinois

Route

Depart

Return

Price

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 2/26

9:05 am-5:00 pm

1 stop13h 55m

Chicago O'Hare Intl

Mon 3/2

9:45 pm-4:05 pm

1 stop12h 20m

$856

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 7/3

6:30 am-6:15 pm

1 stop17h 45m

Chicago O'Hare Intl

Fri 7/24

10:35 pm-6:10 pm

1 stop13h 35m

$857

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 6/27

4:15 pm-1:50 pm

1 stop27h 35m

Chicago O'Hare Intl

Tue 7/21

7:04 pm-3:20 pm

2 stops14h 16m

$857

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 6/27

4:15 pm-1:50 pm

1 stop27h 35m

Chicago O'Hare Intl

Mon 7/20

5:34 pm-12:55 pm

2 stops13h 21m

$857

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 6/27

4:15 pm-1:50 pm

1 stop27h 35m

Chicago O'Hare Intl

Sun 7/26

9:15 pm-2:35 pm

1 stop11h 20m

$857

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 2/26

5:20 pm-2:20 pm

1 stop27h 00m

Chicago O'Hare Intl

Mon 3/2

10:36 am-4:45 pm

2 stops24h 09m

$862

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 6/29

11:35 am-9:22 pm

2 stops15h 47m

Chicago O'Hare Intl

Sat 7/25

5:00 pm-10:05 am

1 stop11h 05m

$863

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 7/1

11:35 am-9:22 pm

2 stops15h 47m

Chicago O'Hare Intl

Thu 7/23

10:35 pm-3:30 pm

1 stop10h 55m

$863

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 6/29

9:40 am-9:22 pm

2 stops17h 42m

Chicago O'Hare Intl

Mon 7/20

9:15 pm-3:30 pm

1 stop12h 15m

$863

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 6/29

9:40 am-9:22 pm

2 stops17h 42m

Chicago O'Hare Intl

Thu 7/23

9:15 pm-3:30 pm

1 stop12h 15m

$863

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 13 results
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Best time to book a flight from Northern Ireland to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Northern Ireland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Northern Ireland to Illinois
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Northern Ireland to Illinois?

    For as low as $856, American Airlines can have you in Illinois from Northern Ireland in 13h 55m. The distance from Northern Ireland to Illinois is about 3644 mi.

  • Can I find deals for flights from Northern Ireland to Illinois that include hotel bookings?

    Yes. In addition to deals on Northern Ireland to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Northern Ireland to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Illinois.

  • Can I find deals for business class flights from Northern Ireland to Illinois?

    Yes. Cheapflights offers flight deals from Northern Ireland to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Northern Ireland to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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