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Cheap flights from Illinois to Northern Ireland from £177

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BFS
25 Mar — 1 Apr1
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 23 February 2026.

Tue 1/1217:10
ORD
-
BHD
1 stop11h 20m
British Airways
Tue 8/1211:25
BHD
-
ORD
1 stop13h 20m
British Airways
Deal found 19/2£489
Mon 7/916:50
ORD
-
BHD
1 stop10h 30m
KLM
Mon 21/917:30
BHD
-
ORD
1 stop26h 45m
KLM
Deal found 22/2£507
Mon 7/919:05
ORD
-
BHD
1 stop14h 25m
British Airways
Mon 21/919:35
BHD
-
ORD
2 stops27h 45m
British Airways
Deal found 22/2£510
Fri 23/1019:05
ORD
-
BHD
1 stop14h 25m
British Airways
Fri 30/1006:45
BHD
-
ORD
1 stop13h 05m
British Airways
Deal found 20/2£523
Sun 26/417:55
ORD
-
BHD
1 stop13h 30m
American Airlines
Sun 3/511:00
BHD
-
ORD
1 stop12h 35m
American Airlines
Deal found 19/2£529
Wed 8/419:25
ORD
-
BFS
2 stops15h 40m
Multiple Airlines
Wed 15/407:20
BFS
-
ORD
2 stops16h 55m
Multiple Airlines
Deal found 22/2£529
Wed 29/419:25
ORD
-
BHD
2 stops18h 05m
Multiple Airlines
Sun 3/507:00
BHD
-
ORD
2 stops20h 25m
Multiple Airlines
Deal found 19/2£535
Wed 29/417:55
ORD
-
BHD
1 stop13h 40m
American Airlines
Sun 3/511:00
BHD
-
ORD
1 stop12h 35m
American Airlines
Deal found 19/2£535
Wed 29/419:25
ORD
-
BFS
2 stops18h 15m
Multiple Airlines
Sun 3/509:55
BFS
-
ORD
2 stops17h 30m
Multiple Airlines
Deal found 19/2£548
Sun 26/419:25
ORD
-
BFS
2 stops20h 25m
Multiple Airlines
Sun 3/506:00
BFS
-
ORD
3 stops43h 25m
Multiple Airlines
Deal found 19/2£553
Fri 23/1018:45
MDW
-
BHD
2 stops16h 10m
KLM
Fri 30/1006:30
BHD
-
MDW
2 stops17h 07m
KLM
Deal found 20/2£555
Tue 1/1218:30
ORD
-
BFS
2 stops19h 45m
Multiple Airlines
Tue 8/1205:45
BFS
-
ORD
3 stops17h 35m
Multiple Airlines
Deal found 19/2£573

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 23 February 2026.

Round-trip from

£529

One-way from

£177
American Airlines
  • American Airlines
  • 26/4-3/5
  • 2 total stops
  • 26h 05m total
  • Illinois to Northern Ireland
Search Deals
12/5
  • 12/5
  • 2 total stops
  • 13h 50m 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 23 February 2026.
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 - BHD

ORDBHD

Chicago O'Hare Intl

Tue 21/4

21:15-17:35

1 stop14h 20m

Belfast City

Sun 26/4

11:00-18:15

1 stop13h 15m

£537

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 29/4

15:16-13:35

2 stops16h 19m

Belfast City

Sun 3/5

06:30-15:55

1 stop15h 25m

£541

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 26/4

14:53-13:25

2 stops16h 32m

Belfast City

Sun 3/5

13:10-07:59

2 stops24h 49m

£544

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 23/4

21:15-19:25

1 stop16h 10m

Belfast City

Tue 28/4

09:40-15:55

1 stop12h 15m

£545

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 28/4

16:20-09:20

1 stop11h 00m

Belfast City

Sun 3/5

17:30-14:30

1 stop27h 00m

£552

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 5/5

16:20-09:20

1 stop11h 00m

Belfast City

Sun 10/5

17:30-14:30

1 stop27h 00m

£552

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 29/4

16:50-09:20

1 stop10h 30m

Belfast City

Mon 4/5

09:50-20:40

2 stops16h 50m

£558

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 26/4

19:25-21:30

2 stops20h 05m

Belfast Intl

Sun 3/5

09:55-18:15

2 stops14h 20m

£561

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 1/5

21:15-15:30

1 stop12h 15m

Belfast City

Wed 6/5

11:35-18:15

1 stop12h 40m

£576

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 7/5

17:00-10:10

1 stop11h 10m

Belfast City

Tue 12/5

09:40-15:55

1 stop12h 15m

£576

Flights are sorted by cheapest return flights first.

Deals found on 19/2

Showing 1-10 of 60 results
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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, Delta, and American Airlines fly from Illinois to Northern Ireland in about 11h. The time it takes to get you to your destination can typically vary by up to 6h 42m. 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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Boston to London City flights
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Boston to Stansted flights
O'Hare Intl to Gatwick flights
Baltimore to Gatwick flights
Los Angeles to Stansted flights
George Bush Intcntl to Heathrow flights
San Francisco to Gatwick flights
Reagan-National to Gatwick flights
Austin to Heathrow flights
Minneapolis to Heathrow flights
Los Angeles to London City flights
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Newark to Edinburgh flights
O'Hare Intl to London City flights
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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 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.

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

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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