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Cheap flights from Illinois to Northern Ireland from £186

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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BFS
20 Jan — 27 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Northern Ireland

Enter your travel dates to find the best prices.

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 21 December 2025.

Mon 22/1220:40ORD - BHD
1 stop31h 50mMultiple Airlines
Sun 28/1206:55BHD - ORD
2 stops17h 00mMultiple Airlines
Deal found 20/12£1,126
Mon 22/1219:40ORD - BHD
2 stops14h 40mAer Lingus
Sun 28/1206:55BHD - ORD
2 stops17h 00mAer Lingus
Deal found 20/12£1,152
Tue 30/1215:50ORD - BHD
2 stops15h 00mBritish Airways
Mon 5/118:50BHD - ORD
2 stops26h 35mBritish Airways
Deal found 19/12£1,282
Tue 30/1215:50ORD - BHD
2 stops15h 00mMultiple Airlines
Mon 5/111:50BHD - ORD
2 stops33h 35mMultiple Airlines
Deal found 20/12£1,357
Sat 27/1219:40ORD - BHD
2 stops15h 05mMultiple Airlines
Sat 3/106:35BHD - ORD
2 stops17h 16mMultiple Airlines
Deal found 20/12£1,583
Sat 27/1218:30ORD - BHD
1 stop16h 15mBritish Airways
Sat 3/106:35BHD - ORD
2 stops17h 16mBritish Airways
Deal found 20/12£1,664
Sat 27/1216:25MDW - BHD
2 stops18h 25mKLM
Sat 3/106:30BHD - MDW
2 stops16h 56mKLM
Deal found 20/12£7,590

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 21 December 2025.

Round-trip from

£460

One-way from

£186
2/2-9/2
  • 2/2-9/2
  • 5 total stops
  • 47h 05m total
  • Illinois to Northern Ireland
Search Deals
6/1
  • 6/1
  • 2 total stops
  • 19h 45m total
  • Illinois to Northern Ireland
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 21 December 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

Mon 2/2

18:30-19:05

2 stops18h 35m

Belfast Intl

Mon 9/2

18:50-17:20

3 stops28h 30m

£460

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 22/4

19:05-11:55

1 stop10h 50m

Belfast City

Wed 29/4

10:00-15:55

1 stop11h 55m

£475

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 28/4

19:05-15:20

1 stop14h 15m

Belfast City

Mon 4/5

18:30-13:50

1 stop25h 20m

£493

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Tue 20/1

15:31-16:50

2 stops19h 19m

Belfast City

Tue 27/1

17:20-16:45

2 stops29h 25m

£494

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 18/1

21:45-16:50

1 stop13h 05m

Belfast City

Sun 25/1

20:25-13:50

1 stop23h 25m

£500

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 4/3

17:10-14:15

1 stop15h 05m

Belfast City

Sun 8/3

09:10-19:45

1 stop15h 35m

£525

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 18/3

22:45-14:15

1 stop10h 30m

Belfast City

Sun 22/3

12:10-07:15

2 stops24h 05m

£543

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 12/1

18:55-16:50

2 stops15h 55m

Belfast City

Tue 20/1

17:20-20:37

2 stops33h 17m

£576

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 24/4

11:14-15:30

2 stops22h 16m

Belfast City

Sat 2/5

19:00-19:30

1 stop30h 30m

£584

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Thu 29/1

13:49-16:50

2 stops21h 01m

Belfast City

Sun 1/2

17:20-17:29

2 stops30h 09m

£590

Flights are sorted by cheapest return flights first.

Deals found on 18/12

Showing 1-10 of 18 results
1
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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 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 Illinois to Northern Ireland
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 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?

    Airlines like British Airways, KLM, and Delta fly from Illinois to Northern Ireland in about 10h 50m. The time it takes to get you to your destination can typically vary by up to 10h 11m. Airlines will cover a distance of 3644 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 holiday 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

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Alternative routes for Illinois to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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How does Cheapflights help users find flights from Illinois to Northern Ireland?

Cheapflights helps you search for flights from Illinois to Northern Ireland via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Northern Ireland from Illinois.

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

Yes, we can. To see specific flights from Illinois to Northern Ireland with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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Of course! You can now track prices for flights from Illinois to Northern Ireland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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