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Cheap flights from Illinois to Northern Ireland from £201

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BFS
3 Feb — 10 Feb1
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 4 January 2026.

Tue 17/217:10ORD - BHD
1 stop12h 20mBritish Airways
Tue 24/206:35BHD - ORD
1 stop13h 15mBritish Airways
Deal found 4/1£463
Tue 17/218:30ORD - BFS
2 stops12h 15mMultiple Airlines
Tue 24/208:35BFS - ORD
2 stops14h 45mMultiple Airlines
Deal found 3/1£479
Sun 4/1013:59ORD - BHD
2 stops14h 31mBritish Airways
Wed 14/1006:50BHD - ORD
1 stop15h 05mBritish Airways
Deal found 4/1£489
Sun 2/821:15ORD - BHD
1 stop11h 25mBritish Airways
Fri 21/809:30BHD - ORD
1 stop12h 25mBritish Airways
Deal found 3/1£490
Wed 4/317:10ORD - BHD
1 stop11h 05mBritish Airways
Sun 8/306:30BHD - ORD
1 stop13h 20mBritish Airways
Deal found 3/1£524
Sun 11/113:35ORD - BHD
2 stops14h 45mAmerican Airlines
Sun 18/110:40BHD - ORD
1 stop12h 20mAmerican Airlines
Deal found 4/1£527
Thu 2/422:25ORD - BHD
1 stop14h 55mAmerican Airlines
Thu 9/409:35BHD - ORD
1 stop14h 00mAmerican Airlines
Deal found 2/1£528
Thu 2/419:05ORD - BHD
1 stop14h 25mBritish Airways
Thu 9/412:40BHD - ORD
2 stops29h 48mBritish Airways
Deal found 2/1£533
Sun 4/1017:00ORD - BFS
1 stop24h 10mMultiple Airlines
Wed 14/1007:00BFS - ORD
1 stop17h 15mMultiple Airlines
Deal found 4/1£561
Sun 11/115:45ORD - BFS
1 stop22h 45mMultiple Airlines
Sun 18/108:55BFS - ORD
2 stops37h 25mMultiple Airlines
Deal found 4/1£582
Sun 11/118:30MDW - BHD
2 stops40h 20mAir Europa
Sun 18/117:20BHD - MDW
2 stops54h 09mAir Europa
Deal found 4/1£599
Mon 12/118:44STL - BHD
2 stops13h 31mBritish Airways
Tue 20/110:00BHD - STL
2 stops18h 44mBritish Airways
Deal found 4/1£602

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 4 January 2026.

Round-trip from

£463

One-way from

£206
British Airways
  • British Airways
  • 17/2-24/2
  • 2 total stops
  • 25h 35m total
  • Illinois to Northern Ireland
Search Deals
3/2
  • 3/2
  • 2 total stops
  • 13h 20m 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 4 January 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 17/2

16:10-11:30

2 stops13h 20m

Belfast City

Tue 24/2

08:45-19:17

2 stops16h 32m

£478

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 17/2

18:30-12:45

2 stops12h 15m

Belfast Intl

Tue 24/2

08:35-17:20

2 stops14h 45m

£479

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 4/3

17:10-10:15

1 stop11h 05m

Belfast City

Sun 8/3

20:25-14:50

1 stop23h 25m

£524

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 2/4

22:25-19:20

1 stop14h 55m

Belfast City

Thu 9/4

09:35-17:35

1 stop14h 00m

£528

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 18/3

22:45-14:15

1 stop10h 30m

Belfast City

Sun 22/3

12:10-07:21

2 stops24h 11m

£541

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 22/1

13:58-16:50

2 stops20h 52m

Belfast City

Mon 26/1

17:20-16:55

2 stops29h 35m

£551

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sat 24/1

18:25-14:15

1 stop13h 50m

Belfast City

Sat 31/1

06:35-15:25

1 stop14h 50m

£560

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 22/1

20:45-16:40

1 stop13h 55m

Belfast City

Mon 26/1

09:15-15:25

1 stop12h 10m

£560

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 22/1

11:44-10:20

2 stops16h 36m

Belfast City

Mon 26/1

14:40-13:50

1 stop29h 10m

£560

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Wed 25/2

09:37-10:15

2 stops18h 38m

Belfast City

Sun 1/3

06:30-18:08

2 stops17h 38m

£625

Flights are sorted by cheapest return flights first.

Deals found on 4/1

Showing 1-10 of 35 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, American Airlines, and Delta fly from Illinois to Northern Ireland in about 13h 20m. The time it takes to get you to your destination can typically vary by up to 4h 25m. 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 Stansted flights
San Francisco to Gatwick flights
Raleigh to Heathrow flights
O'Hare Intl to London City flights
Charlotte to Heathrow flights
John F Kennedy Intl to Edinburgh flights
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Reagan-National to Gatwick flights
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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.

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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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