HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Northern Ireland

$621+ Cheap flights from Illinois to Northern Ireland

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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BFS
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Northern Ireland 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 Illinois to Northern Ireland

Cheapest flights from Illinois to Northern Ireland
Explore the most affordable flight options available from Illinois to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This American Airlines deal was found by Cheapflights users on 12/15. 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 12/312:04 pmSTL - BHD
2 stops18h 11mAmerican Airlines
Wed 1/76:35 amBHD - STL
2 stops17h 59mAmerican Airlines
Deal found 12/15$1,094
This FlightHub deal was found by Cheapflights users on 12/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:20 pmORD - BHD
2 stops31h 55mBritish Airways
Mon 1/57:25 pmBHD - ORD
2 stops28h 22mBritish Airways
Deal found 12/14$1,288
This Ovago deal was found by Cheapflights users on 12/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:40 pmORD - BHD
1 stop11h 20mBritish Airways
Sun 12/2112:10 pmBHD - ORD
2 stops25h 09mBritish Airways
Deal found 12/15$1,326
This Ovago deal was found by Cheapflights users on 12/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:30 pmORD - BHD
1 stop11h 00mMultiple Airlines
Mon 1/57:25 pmBHD - ORD
1 stop27h 35mMultiple Airlines
Deal found 12/13$1,649
This American Airlines deal was found by Cheapflights users on 12/15. 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 12/186:30 pmORD - BHD
1 stop13h 30mAmerican Airlines
Sun 12/216:30 amBHD - ORD
1 stop18h 15mAmerican Airlines
Deal found 12/15$1,750
This oojo deal was found by Cheapflights users on 12/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:40 pmORD - BHD
2 stops12h 25mMultiple Airlines
Fri 12/196:45 amBHD - ORD
1 stop14h 40mMultiple Airlines
Deal found 12/13$1,835
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:40 pmORD - BFS
2 stops13h 50mMultiple Airlines
Fri 12/192:40 pmBFS - ORD
1 stop29h 20mMultiple Airlines
Deal found 12/13$2,647
This KLM deal was found by Cheapflights users on 12/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:26 pmMDW - BHD
2 stops21h 34mKLM
Sun 12/216:30 amBHD - MDW
2 stops16h 49mKLM
Deal found 12/15$3,480
This KLM deal was found by Cheapflights users on 12/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:26 pmMDW - BHD
2 stops17h 24mKLM
Sat 12/206:30 amBHD - MDW
2 stops16h 49mKLM
Deal found 12/14$3,701
This KLM deal was found by Cheapflights users on 12/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/175:29 pmMDW - BHD
2 stops17h 21mKLM
Fri 12/196:30 amBHD - MDW
2 stops17h 30mKLM
Deal found 12/13$12,182

Find flight deals from Illinois to Northern Ireland

Keep the following information in mind while searching for Illinois to Northern Ireland flight deals. Data was last updated December 15, 2025.

Round-trip from

$621
(Mytrip)
From Illinois to Northern Ireland
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Northern Ireland 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 December 15, 2025.
Use the filters below to find and compare flights from Illinois to Northern Ireland that are best for you.

Fly from

Illinois

Fly to

Northern Ireland

Route

Depart

Return

Price

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 1/27

6:30 pm-4:00 pm

2 stops15h 30m

Belfast Intl

Tue 2/3

8:25 pm-5:20 pm

3 stops26h 55m

$621

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 1/12

6:44 pm-4:05 pm

2 stops15h 21m

Belfast City

Tue 1/20

6:35 am-6:16 pm

2 stops17h 41m

$625

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 1/28

6:30 pm-8:50 pm

2 stops20h 20m

Belfast Intl

Wed 2/4

7:20 am-5:20 pm

2 stops16h 00m

$630

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 1/12

4:33 pm-2:15 pm

2 stops15h 42m

Belfast City

Mon 1/19

2:40 pm-8:04 pm

2 stops35h 24m

$640

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 1/12

6:30 pm-8:15 pm

2 stops19h 45m

Belfast Intl

Mon 1/19

10:20 pm-3:00 pm

3 stops46h 40m

$656

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 1/18

8:45 pm-1:55 pm

1 stop11h 10m

Belfast City

Sun 1/25

6:30 am-3:25 pm

1 stop14h 55m

$693

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 1/18

5:10 pm-10:20 am

1 stop11h 10m

Belfast City

Sun 1/25

5:35 pm-1:50 pm

1 stop26h 15m

$693

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 2/11

9:45 pm-4:35 pm

1 stop12h 50m

Belfast City

Sun 2/15

3:10 pm-1:50 pm

1 stop28h 40m

$703

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 2/25

9:45 pm-2:15 pm

1 stop10h 30m

Belfast City

Sun 3/1

10:40 am-6:45 pm

1 stop14h 05m

$703

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/18

10:45 pm-2:15 pm

1 stop10h 30m

Belfast City

Sun 3/22

12:10 pm-7:15 am

2 stops24h 05m

$726

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 13 results
1
2

Best time to book a flight from Illinois to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Illinois 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 Illinois to Northern Ireland

What is the cheapest time of day to fly from IL to NIR?

Find hourly flight availability from Illinois to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

A simple way to save on the total cost of your ticket is to fly from Illinois to Northern Ireland in the morning. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight in the afternoon.

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Northern Ireland. Reviews last updated December 15, 2025.
Get a feel of what it's like to fly with British Airways from Illinois to Northern Ireland by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,575 reviews

Overall

6.7

Boarding

6.9

Food

6.4

Entertainment

6.4

Crew

7.6

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,575 reviews
British Airways
6.7
Okay
7,575 reviews

Overall

6.7

Boarding

6.9

Food

6.4

Entertainment

6.4

Crew

7.6

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Northern Ireland. 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 Illinois to Northern Ireland?

    A quick flight from Illinois to Northern Ireland can take about 11h 10m. British Airways provides one of the quickest options available for as low as $693. Illinois and Northern Ireland are separated by a distance of 3644 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Northern Ireland 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 Illinois to Northern Ireland

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

Top airline flying from Illinois to Northern Ireland

Discover the top airline that operate flights from Illinois to Northern Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$577Average$705FlexibilityNo cancel feeOn-time70%

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.