$648+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
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
Discover tips and strategies to find the most affordable flight options for your journey from Northern Ireland (GBNIR) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 16, 2025.
Round-trip from | $650 (TravelUp) |
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Find flight deals from Northern Ireland to Illinois
Cheapest flights from Northern Ireland to IllinoisExplore 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 enero 16, 2025.
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 enero 16, 2025.
This American Airlines deal was found by Cheapflights users on 1/16. 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.
This TravelUp deal was found by Cheapflights users on 1/16. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This TravelUp deal was found by Cheapflights users on 1/16. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This EaseMyTrip deal was found by Cheapflights users on 1/15. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Finnair deal was found by Cheapflights users on 1/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 1/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This British Airways deal was found by Cheapflights users on 1/16. 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.
This Mytrip deal was found by Cheapflights users on 1/16. 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.
This Cheapflightsfares deal was found by Cheapflights users on 1/16. 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.
This FlightHub deal was found by Cheapflights users on 1/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flights from Northern Ireland to Illinois within your budget
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 enero 16, 2025.
Fly from
Fly to
Route
Depart
Return
Price
BelfastChicago
BHD - ORD
BHDORD
Belfast City
dom. 2/9
5:20 pm-2:30 pm
1 stop27h 10m
Chicago O'Hare Intl
dom. 2/16
4:25 pm-4:50 pm
1 stop18h 25m
BelfastChicago
BHD - ORD
BHDORD
Belfast City
dom. 2/9
5:20 pm-12:01 pm
2 stops48h 41m
Chicago O'Hare Intl
dom. 2/16
6:30 pm-4:50 pm
2 stops40h 20m
BelfastChicago
BHD - ORD
BHDORD
Belfast City
jue. 2/27
6:35 am-5:00 pm
1 stop16h 25m
Chicago O'Hare Intl
dom. 3/9
6:36 pm-9:05 am
2 stops33h 29m
BelfastChicago
BHD - ORD
BHDORD
Belfast City
jue. 2/27
6:35 am-5:00 pm
1 stop16h 25m
Chicago O'Hare Intl
dom. 3/9
4:27 pm-6:40 pm
2 stops21h 13m
BelfastChicago
BHD - ORD
BHDORD
Belfast City
dom. 2/9
6:30 am-7:48 pm
2 stops19h 18m
Chicago O'Hare Intl
dom. 2/16
10:30 am-4:50 pm
2 stops24h 20m
BelfastChicago
BHD - ORD
BHDORD
Belfast City
jue. 2/27
6:35 am-5:42 pm
2 stops17h 07m
Chicago O'Hare Intl
dom. 3/9
4:27 pm-1:55 pm
2 stops16h 28m
BelfastChicago
BHD - ORD
BHDORD
Belfast City
jue. 2/27
9:00 am-8:08 pm
2 stops17h 08m
Chicago O'Hare Intl
dom. 3/9
6:30 pm-1:55 pm
2 stops14h 25m
BelfastChicago
BFS - ORD
BFSORD
Belfast Intl
dom. 3/2
6:35 am-5:20 pm
2 stops16h 45m
Chicago O'Hare Intl
dom. 3/9
7:30 pm-9:40 pm
2 stops21h 10m
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.
Travel insights for flights from Northern Ireland to Illinois
Get recent, data-driven insights about flights from Northern Ireland to Illinois including ideal travel times, pricing trends, and more.
Rainfall in Illinois by month
Plan your trip to Illinois by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.
Temperature in Illinois by month
Plan your trip to Illinois by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated enero 16, 2025.
Entertainment
Food
Overall
Comfort
Crew
Boarding
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Entertainment
Food
Overall
Comfort
Crew
Boarding
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Entertainment
Food
Overall
Comfort
Crew
Boarding
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Entertainment
Food
Overall
Comfort
Crew
Boarding
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Entertainment
Food
Overall
Comfort
Crew
Boarding
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Entertainment
Food
Overall
Comfort
Crew
Boarding
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception