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Cheap flights from Illinois to Northern Ireland from £238

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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BFS
21 Jun — 28 Jun1
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 22 May 2026.

Sun 29/1117:10
ORD
-
BHD
1 stop11h 10m
British Airways
Wed 2/1217:40
BHD
-
ORD
1 stop31h 05m
British Airways
Deal found 19/5£658
Wed 7/1019:25
ORD
-
BFS
2 stops14h 30m
Multiple Airlines
Wed 21/1009:35
BFS
-
ORD
2 stops34h 25m
Multiple Airlines
Deal found 22/5£663
Sun 5/710:43
ORD
-
BFS
2 stops30h 07m
Multiple Airlines
Tue 21/723:30
BFS
-
ORD
2 stops23h 27m
Multiple Airlines
Deal found 22/5£677
Wed 4/1118:45
STL
-
BHD
2 stops15h 50m
American Airlines
Wed 18/1106:35
BHD
-
STL
2 stops17h 02m
American Airlines
Deal found 18/5£678
Sun 9/819:25
ORD
-
BFS
2 stops19h 55m
Multiple Airlines
Sun 16/806:45
BFS
-
ORD
3 stops36h 37m
Multiple Airlines
Deal found 21/5£690
Fri 18/921:15
ORD
-
BHD
1 stop12h 15m
British Airways
Mon 28/919:35
BHD
-
ORD
1 stop22h 55m
British Airways
Deal found 19/5£690
Thu 8/1017:00
ORD
-
BHD
1 stop11h 10m
British Airways
Mon 12/1018:30
BHD
-
ORD
1 stop27h 25m
British Airways
Deal found 17/5£693
Mon 9/1118:59
STL
-
BHD
2 stops15h 51m
KLM
Mon 23/1117:20
BHD
-
STL
2 stops30h 41m
KLM
Deal found 18/5£694
Thu 11/608:52
ORD
-
BFS
3 stops28h 03m
Multiple Airlines
Tue 16/621:15
BFS
-
ORD
2 stops28h 10m
Multiple Airlines
Deal found 17/5£695
Fri 18/921:15
ORD
-
BHD
1 stop14h 55m
Multiple Airlines
Mon 28/919:35
BHD
-
ORD
2 stops26h 25m
Multiple Airlines
Deal found 19/5£698
Wed 17/614:15
ORD
-
BFS
2 stops23h 00m
Multiple Airlines
Wed 24/606:15
BFS
-
ORD
3 stops34h 01m
Multiple Airlines
Deal found 20/5£715
Wed 9/1218:10
ORD
-
BHD
2 stops16h 40m
Virgin Atlantic
Wed 6/117:20
BHD
-
ORD
1 stop27h 05m
Virgin Atlantic
Deal found 17/5£717

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 22 May 2026.

Round-trip from

£678

One-way from

£238
American Airlines
  • American Airlines
  • 4/11-18/11
  • 4 total stops
  • 32h 52m total
  • Illinois to Northern Ireland
Search Deals
British Airways
  • British Airways
  • 8/9
  • 1 total stop
  • 11h 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 22 May 2026.
Use the filters below to find and compare flights from Illinois to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 7/10

19:25-15:55

2 stops14h 30m

Belfast Intl

Wed 21/10

09:35-14:00

2 stops34h 25m

£663

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 9/8

19:25-21:20

2 stops19h 55m

Belfast Intl

Sun 16/8

06:45-13:22

3 stops36h 37m

£690

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 8/10

17:00-10:10

1 stop11h 10m

Belfast City

Mon 12/10

18:30-15:55

1 stop27h 25m

£693

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 9/11

18:59-16:50

2 stops15h 51m

Belfast City

Mon 23/11

17:20-18:01

2 stops30h 41m

£694

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Thu 11/6

09:55-18:55

2 stops27h 00m

Belfast Intl

Tue 16/6

21:15-19:25

2 stops28h 10m

£720

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 6/11

16:13-16:50

2 stops18h 37m

Belfast City

Mon 16/11

17:20-17:06

2 stops29h 46m

£731

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Thu 9/7

08:45-21:45

3 stops31h 00m

Belfast Intl

Mon 13/7

06:40-16:57

2 stops16h 17m

£739

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 17/6

14:15-19:15

2 stops23h 00m

Belfast Intl

Wed 24/6

05:55-22:05

2 stops22h 10m

£744

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 14/6

08:50-17:45

2 stops26h 55m

Belfast City

Sun 21/6

07:00-14:55

3 stops37h 55m

£760

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sat 11/7

08:45-18:55

3 stops28h 10m

Belfast Intl

Sun 26/7

06:45-13:22

3 stops36h 37m

£763

Flights are sorted by cheapest return flights first.

Deals found on 21/5

Showing 1-10 of 46 resultsSorted by cheapest first
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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 11h 10m. The time it takes to get you to your destination can typically vary by up to 6h 16m. 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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Los Angeles to Stansted flights
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Newark to Edinburgh flights
Philadelphia to Heathrow flights
Baltimore to Gatwick flights
Reagan-National to Gatwick flights
San Francisco to Gatwick flights
Los Angeles to London City flights
O'Hare Intl to Gatwick flights
Seattle to Gatwick flights
San Francisco to Stansted flights
O'Hare Intl to Stansted flights
O'Hare Intl to London City flights

Fly with Cheapflights

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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.

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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