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$421+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
Feb 6 — Feb 131
Fri 2/6
Fri 2/13
1 adult, Economy
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Cheap 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 7, 2026.

Round-trip from

$614
(Mytrip)

One-way from

$421
(Kiwi.com)
From Northern Ireland to Illinois
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One-way flight from Northern Ireland to Illinois
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Find 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 7, 2026.

This British Airways deal was found by Cheapflights users on 1/5. 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 1/298:00 pmBHD - ORD
1 stop27h 00mBritish Airways
Mon 2/24:30 pmORD - BHD
2 stops15h 45mBritish Airways
Deal found 1/5$674
This British Airways deal was found by Cheapflights users on 1/5. 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 2/67:35 pmBHD - ORD
2 stops30h 14mBritish Airways
Mon 2/99:45 pmORD - BHD
1 stop12h 20mBritish Airways
Deal found 1/5$679

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 7, 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 1/29

8:00 pm-5:00 pm

1 stop27h 00m

Chicago O'Hare Intl

Mon 2/2

5:10 pm-10:40 am

1 stop11h 30m

$674

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 2/6

7:35 pm-7:49 pm

2 stops30h 14m

Chicago O'Hare Intl

Mon 2/9

11:47 am-2:15 pm

2 stops20h 28m

$679

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 5/14

7:00 am-7:59 am

2 stops30h 59m

$421

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 5/14

2:00 pm-5:50 pm

3 stops33h 50m

$428

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 5/16

1:25 pm-5:50 pm

3 stops34h 25m

$437

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 5/13

6:20 pm-6:15 pm

3 stops29h 55m

$444

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sun 5/17

10:00 pm-6:15 pm

3 stops26h 15m

$450

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 5/15

5:05 pm-5:50 pm

3 stops30h 45m

$454

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 5/15

7:00 am-7:59 am

2 stops30h 59m

$466

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 5/16

7:15 am-6:15 pm

3 stops17h 00m

$482

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 17 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 $674, British Airways can have you in Illinois from Northern Ireland in 27h. 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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