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Cheap flights from Illinois to Northern Ireland from £198

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 26/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BFS
13 Aug — 20 Aug1
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 14 July 2026.

Tue 1/1218:30
ORD
-
BFS
2 stops20h 25m
Multiple Airlines
Wed 9/1210:40
BFS
-
ORD
3 stops36h 40m
Multiple Airlines
Deal found 9/7£561
Mon 24/822:25
ORD
-
BFS
2 stops17h 50m
Multiple Airlines
Mon 31/806:40
BFS
-
ORD
3 stops33h 36m
Multiple Airlines
Deal found 10/7£570
Thu 5/1118:30
ORD
-
BFS
2 stops18h 40m
Multiple Airlines
Thu 12/1109:25
BFS
-
ORD
3 stops36h 05m
Multiple Airlines
Deal found 13/7£579
Wed 4/1118:30
ORD
-
BFS
2 stops21h 50m
Multiple Airlines
Tue 10/1108:25
BFS
-
ORD
3 stops37h 05m
Multiple Airlines
Deal found 13/7£581
Fri 9/1019:25
ORD
-
BFS
2 stops19h 50m
Multiple Airlines
Fri 23/1017:30
BFS
-
ORD
3 stops30h 45m
Multiple Airlines
Deal found 9/7£594
Thu 12/1118:30
ORD
-
BFS
2 stops18h 40m
Multiple Airlines
Sun 15/1113:35
BFS
-
ORD
3 stops33h 10m
Multiple Airlines
Deal found 10/7£601
Tue 1/922:25
ORD
-
BHD
2 stops13h 25m
Multiple Airlines
Sun 6/907:00
BHD
-
ORD
2 stops20h 25m
Multiple Airlines
Deal found 13/7£611
Wed 4/1121:50
ORD
-
BHD
1 stop10h 25m
Multiple Airlines
Tue 10/1112:05
BHD
-
ORD
3 stops33h 25m
Multiple Airlines
Deal found 13/7£621
Wed 26/809:50
ORD
-
BHD
2 stops20h 00m
Multiple Airlines
Wed 2/914:45
BHD
-
ORD
3 stops36h 35m
Multiple Airlines
Deal found 12/7£644
Thu 27/819:25
ORD
-
BHD
3 stops19h 25m
Multiple Airlines
Thu 3/911:50
BHD
-
ORD
3 stops39h 30m
Multiple Airlines
Deal found 13/7£646
Wed 4/1117:10
ORD
-
BHD
1 stop15h 05m
British Airways
Tue 10/1108:45
BHD
-
ORD
1 stop16h 00m
British Airways
Deal found 13/7£648
Sun 15/1117:10
ORD
-
BHD
1 stop11h 10m
British Airways
Thu 19/1107:40
BHD
-
ORD
1 stop12h 10m
British Airways
Deal found 9/7£662

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 14 July 2026.

Round-trip from

£561

One-way from

£198
1/12-9/12
  • 1/12-9/12
  • 5 total stops
  • 57h 05m total
  • Illinois to Northern Ireland
Search Deals
26/7
  • 26/7
  • 3 total stops
  • 30h 00m 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 14 July 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 4/11

18:30-22:20

2 stops21h 50m

Belfast Intl

Tue 10/11

08:25-15:30

3 stops37h 05m

£581

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 24/8

22:25-22:15

2 stops17h 50m

Belfast Intl

Mon 31/8

06:40-10:16

3 stops33h 36m

£583

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 9/10

19:25-21:15

2 stops19h 50m

Belfast Intl

Fri 23/10

17:30-18:15

3 stops30h 45m

£594

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Thu 12/11

18:30-19:10

2 stops18h 40m

Belfast Intl

Sun 15/11

13:35-16:45

3 stops33h 10m

£601

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Thu 27/8

19:25-15:50

2 stops14h 25m

Belfast Intl

Thu 3/9

20:55-14:00

3 stops47h 05m

£606

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 26/8

15:45-21:45

2 stops24h 00m

Belfast Intl

Wed 2/9

08:20-21:20

3 stops43h 00m

£614

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 4/10

19:25-21:00

2 stops19h 35m

Belfast Intl

Fri 9/10

06:15-16:10

3 stops39h 55m

£617

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 26/8

09:50-11:50

2 stops20h 00m

Belfast City

Wed 2/9

14:45-21:20

3 stops36h 35m

£644

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 9/8

22:25-21:20

2 stops16h 55m

Belfast Intl

Tue 25/8

21:20-12:40

3 stops45h 20m

£653
Fastest return journey

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 15/11

17:10-10:20

1 stop11h 10m

Belfast City

Thu 19/11

07:40-13:50

1 stop12h 10m

£662

Flights are sorted by cheapest return flights first.

Deals found on 13/7

Showing 1-10 of 39 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, Virgin Atlantic, and KLM fly from Illinois to Northern Ireland in about 13h 55m. The time it takes to get you to your destination can typically vary by up to 8h 40m. Airlines will cover a distance of 3647 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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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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