HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Chicago

$578+ Cheap flights from Northern Ireland to Chicago (CHI)

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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — CHI
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Northern Ireland to Chicago 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 Chicago

Cheapest flights from Northern Ireland to Chicago
Explore the most affordable flight options available from Northern Ireland to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This Trip.com deal was found by Cheapflights users on 2/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:30 am
BFS
-
ORD
2 stops16h 50m
Multiple Airlines
Wed 3/257:30 pm
ORD
-
BFS
2 stops21h 50m
Multiple Airlines
Deal found 2/1$578
This ChecknFly deal was found by Cheapflights users on 2/1. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/13:10 pm
BHD
-
ORD
1 stop30h 15m
Finnair
Sun 3/89:35 pm
ORD
-
BHD
1 stop11h 20m
Finnair
Deal found 2/1$800
This Trip.com deal was found by Cheapflights users on 2/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/307:35 pm
BHD
-
ORD
1 stop22h 50m
Multiple Airlines
Sat 4/47:25 pm
ORD
-
BHD
2 stops18h 15m
Multiple Airlines
Deal found 2/2$908
This British Airways deal was found by Cheapflights users on 2/2. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:05 am
BHD
-
ORD
1 stop13h 55m
British Airways
Mon 2/239:45 pm
ORD
-
BHD
1 stop10h 30m
British Airways
Deal found 2/2$909
This Booking.com deal was found by Cheapflights users on 2/1. 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.
Sun 3/17:25 am
BHD
-
ORD
3 stops47h 15m
Multiple Airlines
Sun 3/85:25 pm
ORD
-
BHD
2 stops18h 55m
Multiple Airlines
Deal found 2/1$981
This Booking.com deal was found by Cheapflights users on 2/1. 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.
Sun 3/19:25 am
BFS
-
ORD
3 stops45h 15m
Multiple Airlines
Sun 3/85:25 pm
ORD
-
BFS
2 stops20h 30m
Multiple Airlines
Deal found 2/1$996
This lastminute.com deal was found by Cheapflights users on 2/2. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/305:30 pm
BHD
-
ORD
2 stops34h 46m
Virgin Atlantic
Sat 4/42:10 pm
ORD
-
BHD
2 stops37h 10m
Virgin Atlantic
Deal found 2/2$1,018
This British Airways deal was found by Cheapflights users on 1/31. 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 2/55:45 pm
BHD
-
ORD
1 stop26h 05m
British Airways
Mon 2/99:45 pm
ORD
-
BHD
1 stop10h 30m
British Airways
Deal found 1/31$1,328

Find flight deals from Northern Ireland to Chicago

Keep the following information in mind while searching for Northern Ireland to Chicago flight deals. Data was last updated February 3, 2026.

Round-trip from

$578
(Trip.com)
From Northern Ireland to Chicago (CHI)
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Northern Ireland to Chicago 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 February 3, 2026.
Use the filters below to find and compare flights from Northern Ireland to Chicago that are best for you.

Fly from

Northern Ireland

Fly to

Chicago

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 3/18

6:30 am-6:20 pm

2 stops16h 50m

Chicago O'Hare Intl

Wed 3/25

7:30 pm-10:20 pm

2 stops21h 50m

$578

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 3/1

3:10 pm-3:25 pm

1 stop30h 15m

Chicago O'Hare Intl

Sun 3/8

9:35 pm-1:55 pm

1 stop11h 20m

$800

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 3/30

7:35 pm-12:25 pm

1 stop22h 50m

Chicago O'Hare Intl

Sat 4/4

7:25 pm-7:40 pm

2 stops18h 15m

$908

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 2/19

10:40 am-5:00 pm

1 stop12h 20m

Chicago O'Hare Intl

Mon 2/23

4:10 pm-2:15 pm

2 stops16h 05m

$909

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 3/1

7:25 am-12:40 am

3 stops47h 15m

Chicago O'Hare Intl

Sun 3/8

5:25 pm-5:20 pm

2 stops18h 55m

$981

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 3/30

5:30 pm-10:16 pm

2 stops34h 46m

Chicago O'Hare Intl

Sat 4/4

2:10 pm-9:20 am

2 stops37h 10m

$1,018

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sun 3/1

2:10 pm-5:20 pm

2 stops33h 10m

Chicago O'Hare Intl

Sun 3/8

5:25 pm-6:55 pm

2 stops20h 30m

$1,049

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 7/15

6:00 am-11:50 am

3 stops35h 50m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Best time to book a flight from Northern Ireland to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago 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 Chicago
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 Chicago. 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 Chicago?

    Airlines like Finnair and British Airways fly from Northern Ireland to Chicago in about 12h 20m. The time it takes to get you to your destination can typically vary by up to 17h 55m. The distance between Northern Ireland and Chicago 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 Chicago that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Northern Ireland to Chicago 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

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lansing
Merrillville
Hammond
Porter
Benton Harbor

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.

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.