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$442+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
Sep 8 — Sep 151
Mon 9/8
Mon 9/15
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 September 3, 2025.

Round-trip from

$650
(Netflights)

One-way from

$442
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$700
From Northern Ireland to Illinois
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One-way flight from Northern Ireland to Illinois
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 3, 2025.

This Netflights deal was found by Cheapflights users on 9/2. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/246:50 amBHD - ORD
1 stop14h 00mBritish Airways
Tue 10/215:40 pmORD - BHD
1 stop10h 55mBritish Airways
Deal found 9/2$650
This Delta deal was found by Cheapflights users on 9/2. 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.
Wed 9/246:30 amBHD - ORD
1 stop14h 10mDelta
Tue 10/211:25 pmORD - BHD
2 stops21h 30mDelta
Deal found 9/2$664

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 September 3, 2025.
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

Wed 9/24

6:50 am-2:50 pm

1 stop14h 00m

Chicago O'Hare Intl

Tue 10/21

5:40 pm-10:35 am

1 stop10h 55m

$650

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 9/24

6:30 am-2:40 pm

1 stop14h 10m

Chicago O'Hare Intl

Tue 10/21

1:25 pm-4:55 pm

2 stops21h 30m

$664

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 9/29

9:55 pm-4:10 pm

3 stops48h 15m

$442

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 9/12

4:40 pm-11:10 am

3 stops48h 30m

$457

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 9/13

4:50 pm-4:10 pm

2 stops29h 20m

$481

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 9/8

11:45 pm-4:12 pm

3 stops46h 27m

$499

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 9/8

8:50 am-9:28 pm

3 stops42h 38m

$504

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 9/13

7:00 am-11:58 am

3 stops34h 58m

$516

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 9/29

8:50 am-10:52 am

3 stops32h 02m

$539

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 9/12

7:00 am-10:43 pm

2 stops21h 43m

$628

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/2

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 $650, British Airways can have you in Illinois from Northern Ireland in 14h. The distance from Northern Ireland to Illinois is about 3644 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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.

  • What is the cheapest month to book a flight from Northern Ireland to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Northern Ireland to Illinois (average of $245). Flying from Northern Ireland to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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