HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$694+ Cheap flights from Northern Ireland to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Northern Ireland to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 20, 2026.

This British Airways deal was found by Cheapflights users on 1/19. 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
1 stop27h 00m
British Airways
Mon 2/98:45 pm
ORD
-
BHD
1 stop13h 20m
British Airways
Deal found 1/19$694
This British Airways deal was found by Cheapflights users on 1/18. 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 pm
BHD
-
ORD
2 stops25h 20m
British Airways
Mon 2/98:45 pm
ORD
-
BHD
1 stop11h 30m
British Airways
Deal found 1/18$707
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1910:35 am
BHD
-
ORD
2 stops14h 40m
British Airways
Thu 2/265:10 pm
ORD
-
BHD
1 stop11h 10m
British Airways
Deal found 1/20$766
This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/69:05 pm
BFS
-
ORD
3 stops47h 40m
Multiple Airlines
Fri 3/137:15 am
ORD
-
BFS
3 stops34h 30m
Multiple Airlines
Deal found 1/20$804

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 20, 2026.

Round-trip from

$694
(British Airways)
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 20, 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 2/5

8:00 pm-3:25 pm

1 stop25h 25m

Chicago O'Hare Intl

Mon 2/9

11:44 am-9:05 am

2 stops15h 21m

$694

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 2/6

7:35 pm-2:55 pm

2 stops25h 20m

Chicago O'Hare Intl

Mon 2/9

11:44 am-9:05 am

2 stops15h 21m

$707

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 2/19

10:40 am-5:00 pm

1 stop12h 20m

Chicago O'Hare Intl

Thu 2/26

5:10 pm-10:20 am

1 stop11h 10m

$746

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 3/6

9:05 pm-2:45 pm

3 stops47h 40m

Chicago O'Hare Intl

Fri 3/13

7:15 am-10:45 pm

3 stops34h 30m

$804

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 2/19

10:35 am-7:15 pm

2 stops14h 40m

Chicago O'Hare Intl

Thu 2/26

9:00 pm-4:40 pm

2 stops13h 40m

$825

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

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 $694, British Airways can have you in Illinois from Northern Ireland in 25h 25m. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Northern Ireland to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Heathrow to LaGuardia flights
Gatwick to Newark flights
London City to John F Kennedy Intl flights
Gatwick to LaGuardia flights
Gatwick to John F Kennedy Intl flights
Stansted to John F Kennedy Intl flights
Heathrow to Miami flights
Heathrow to Los Angeles flights
London City to Newark flights
Heathrow to Orlando flights
Manchester to John F Kennedy Intl flights
Luton to John F Kennedy Intl flights
Heathrow to Dallas/Fort Worth flights
Heathrow to Boston flights
Stansted to Newark flights
Heathrow to Las Vegas flights
Manchester to Orlando flights
Heathrow to San Francisco flights
Heathrow to O'Hare Intl flights
Heathrow to Seattle flights
Gatwick to Orlando flights
Heathrow to Dulles Intl flights
Gatwick to Miami flights
Luton to Newark flights
London City to Miami flights
Gatwick to Los Angeles flights
Stansted to Miami flights
Manchester to Newark flights
Heathrow to Baltimore flights
Heathrow to Atlanta flights
London City to Los Angeles flights
Heathrow to Tampa flights
Manchester to LaGuardia flights
Heathrow to Hobby flights
Heathrow to Denver flights
Gatwick to Boston flights
Stansted to Los Angeles flights
Luton to Miami flights
Edinburgh to John F Kennedy Intl flights
Heathrow to George Bush Intcntl flights
Edinburgh to Newark flights
Gatwick to Dallas/Fort Worth flights
Stansted to Orlando flights
Heathrow to Ontario flights
Heathrow to Fort Lauderdale flights
Gatwick to San Francisco flights
Heathrow to Charlotte flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.