Find flights
When to book
Airlines
FAQs

Cheap flights from Northern Ireland to Illinois from £368

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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
8 May — 15 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to Illinois

Enter your travel dates to find the best prices.

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 8 April 2026.

Fri 13/1106:45
BHD
-
ORD
1 stop16h 20m
British Airways
Tue 17/1118:50
ORD
-
BHD
1 stop14h 00m
British Airways
Deal found 5/4£713
Thu 21/509:50
BHD
-
ORD
2 stops17h 46m
Delta
Thu 28/510:25
ORD
-
BHD
2 stops16h 55m
Delta
Deal found 6/4£786
Fri 22/518:35
BFS
-
ORD
2 stops29h 40m
Multiple Airlines
Fri 29/514:15
ORD
-
BFS
2 stops25h 35m
Multiple Airlines
Deal found 7/4£787
Thu 21/517:30
BHD
-
ORD
1 stop26h 45m
Virgin Atlantic
Thu 28/510:25
ORD
-
BHD
2 stops16h 55m
Virgin Atlantic
Deal found 6/4£820
Thu 21/509:35
BHD
-
ORD
1 stop14h 00m
British Airways
Thu 28/519:05
ORD
-
BHD
1 stop18h 20m
British Airways
Deal found 6/4£864
Fri 1/506:30
BHD
-
ORD
1 stop11h 50m
Finnair
Fri 8/520:35
ORD
-
BHD
1 stop12h 55m
Finnair
Deal found 4/4£4,397
Fri 1/506:30
BHD
-
ORD
1 stop13h 20m
British Airways
Fri 8/516:19
ORD
-
BHD
2 stops17h 11m
British Airways
Deal found 4/4£4,932

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 8 April 2026.

Round-trip from

£786

One-way from

£368
Delta
  • Delta
  • 21/5-28/5
  • 4 total stops
  • 34h 41m total
  • Northern Ireland to Illinois
Search Deals
24/8
  • 24/8
  • 3 total stops
  • 29h 40m total
  • Northern Ireland to Illinois
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 8 April 2026.
Use the filters below to find and compare flights from Northern Ireland to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 21/5

09:50-21:36

2 stops17h 46m

Chicago O'Hare Intl

Thu 28/5

10:25-09:20

2 stops16h 55m

£786

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 21/5

17:30-14:15

1 stop26h 45m

Chicago O'Hare Intl

Thu 28/5

10:25-09:20

2 stops16h 55m

£820

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 21/5

09:35-17:35

1 stop14h 00m

Chicago O'Hare Intl

Thu 28/5

19:05-19:25

1 stop18h 20m

£864

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 22/5

17:30-15:05

1 stop27h 35m

Chicago O'Hare Intl

Fri 29/5

15:45-14:15

2 stops16h 30m

£1,348
Fastest return journey

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 1/5

06:30-12:20

1 stop11h 50m

Chicago O'Hare Intl

Fri 8/5

20:35-15:30

1 stop12h 55m

£4,397

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 1/5

06:30-13:50

1 stop13h 20m

Chicago O'Hare Intl

Fri 8/5

16:19-15:30

2 stops17h 11m

£4,932
Cheapest one-way

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 24/8

17:05-17:50

3 stops30h 45m

£389

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 21/8

07:35-19:15

3 stops41h 40m

£403

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 24/8

21:55-14:25

2 stops46h 30m

£404

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 28/7

17:10-18:15

3 stops31h 05m

£425

Flights are sorted by cheapest return flights first.

Deals found on 7/4

Showing 1-10 of 12 resultsSorted by cheapest first
1
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 return 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.

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 8 April 2026.
See what other customers who have flown with British Airways from Northern Ireland to Illinois have to say. 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
7,859 reviews
Check prices

Comfort

6.8

Overall

6.7

Entertainment

6.4

Crew

7.7

Boarding

6.9

Food

6.4

Reviews

1 / 20
6.0
Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.
British Airways
6.7
Okay
7,859 reviews
British Airways
6.7
Okay
7,859 reviews
Check prices

Comfort

6.8

Overall

6.7

Entertainment

6.4

Crew

7.7

Boarding

6.9

Food

6.4

Reviews

1 / 20
6.0
Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

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?

    Departing from Northern Ireland to Illinois will take you 14h. There are 3644 mi between Northern Ireland and Illinois. Both multi-stop and direct flights can be found to your destination and back.

  • 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 holiday 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
Gatwick to John F Kennedy Intl flights
Heathrow to LaGuardia flights
Heathrow to Orlando flights
Heathrow to Los Angeles flights
Stansted to John F Kennedy Intl flights
Gatwick to Newark flights
London City to John F Kennedy Intl flights
Gatwick to LaGuardia flights
Heathrow to Miami flights
Gatwick to Orlando flights
Heathrow to Boston flights
Luton to John F Kennedy Intl flights
Heathrow to San Francisco flights
Stansted to Newark flights
Gatwick to Los Angeles flights
Manchester to John F Kennedy Intl flights
Heathrow to O'Hare Intl flights
Heathrow to Dallas/Fort Worth flights
Manchester to Orlando flights
Luton to Newark flights
Heathrow to Las Vegas flights
London City to Newark flights
Heathrow to Seattle flights
Heathrow to Dulles Intl flights
Heathrow to Hobby flights
Heathrow to Atlanta flights
Stansted to Los Angeles flights
Stansted to Orlando flights
Gatwick to Miami flights
Gatwick to Boston flights
Stansted to Miami flights
London City to Los Angeles flights
London City to Orlando flights
Heathrow to George Bush Intcntl flights
Manchester to Newark flights
London City to Miami flights
Heathrow to Baltimore flights
Heathrow to Ontario flights
London City to Boston flights
Stansted to Boston flights
Gatwick to San Francisco flights
Heathrow to Nashville flights
Luton to Los Angeles flights
Luton to Miami flights
Manchester to LaGuardia flights
Heathrow to Denver flights
Heathrow to Tampa flights
Stansted to San Francisco flights

Top airline flying from Northern Ireland to Illinois

Discover the top airline that operate flights from Northern Ireland to Illinois. 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 858,174 searches. Data last updated 8 April 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£506Average£661FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Northern Ireland to Illinois?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Illinois from Northern Ireland today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Illinois?

Millions of users choose and trust Cheapflights to book the best flight deals from Northern Ireland to Illinois for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Northern Ireland to Illinois with no change fees?

Certainly. Search results for flights to Illinois from Northern Ireland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Northern Ireland to Illinois become cheaper?

Not ready to book yet? You can track prices for flights from Northern Ireland to Illinois on Cheapflights with our Price Alert feature and get notified when better prices are available.

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.