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Cheap flights from Illinois to Belfast City Airport from £241

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 — BHD
28 Jun — 5 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Belfast City

Enter your travel dates to find the best prices.

Cheapest flights from Illinois to Belfast City
Explore the most affordable flight options available from Illinois to Belfast City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 May 2026.

Tue 1/912:40
ORD
-
BHD
2 stops16h 05m
British Airways
Wed 9/911:35
BHD
-
ORD
1 stop12h 40m
British Airways
Deal found 26/5£660
Sun 13/917:00
ORD
-
BHD
1 stop11h 30m
British Airways
Wed 16/920:35
BHD
-
ORD
1 stop23h 15m
British Airways
Deal found 28/5£660
Sun 6/921:15
ORD
-
BHD
1 stop11h 20m
British Airways
Mon 14/918:30
BHD
-
ORD
1 stop27h 25m
British Airways
Deal found 27/5£661
Tue 1/916:20
ORD
-
BHD
1 stop11h 00m
Delta
Wed 9/917:30
BHD
-
ORD
1 stop26h 45m
Delta
Deal found 27/5£675
Tue 1/917:20
ORD
-
BHD
2 stops17h 35m
Delta
Mon 14/917:30
BHD
-
ORD
1 stop26h 45m
Delta
Deal found 27/5£678
Wed 2/919:05
ORD
-
BHD
1 stop12h 30m
British Airways
Thu 10/909:35
BHD
-
ORD
1 stop12h 20m
British Airways
Deal found 27/5£681
Tue 1/916:20
ORD
-
BHD
1 stop11h 00m
Delta
Fri 11/909:50
BHD
-
ORD
2 stops16h 34m
Delta
Deal found 27/5£682
Tue 1/910:28
ORD
-
BHD
2 stops16h 52m
Delta
Tue 8/909:50
BHD
-
ORD
2 stops16h 34m
Delta
Deal found 27/5£686
Fri 4/918:15
ORD
-
BHD
1 stop15h 15m
American Airlines
Fri 11/909:35
BHD
-
ORD
1 stop14h 00m
American Airlines
Deal found 27/5£697
Sat 5/919:05
ORD
-
BHD
1 stop11h 20m
British Airways
Mon 14/919:35
BHD
-
ORD
1 stop26h 20m
British Airways
Deal found 27/5£698
Thu 1/1016:19
STL
-
BHD
2 stops17h 11m
British Airways
Fri 9/1012:00
BHD
-
STL
2 stops17h 31m
British Airways
Deal found 26/5£1,400
Sun 7/609:10
STL
-
BHD
3 stops23h 45m
Aer Lingus
Mon 8/619:35
BHD
-
STL
2 stops34h 24m
Aer Lingus
Deal found 26/5£1,451

Find flight deals from Illinois to Belfast City

Keep the following information in mind while searching for Illinois to Belfast City flight deals. Data was last updated 29 May 2026.

Round-trip from

£647

One-way from

£241
British Airways
  • British Airways
  • 11/11-18/11
  • 2 total stops
  • 29h 15m total
  • Illinois to Belfast
Search Deals
British Airways
  • British Airways
  • 8/9
  • 1 total stop
  • 14h 15m total
  • Illinois to Belfast
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Illinois to Belfast City 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 29 May 2026.
Use the filters below to find and compare flights from Illinois to Belfast City Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 13/9

17:00-10:30

1 stop11h 30m

Belfast City

Wed 16/9

20:35-13:50

1 stop23h 15m

£660

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 6/9

12:29-09:20

2 stops14h 51m

Belfast City

Thu 10/9

17:30-14:15

1 stop26h 45m

£678
Fastest return journey

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 2/9

19:05-13:35

1 stop12h 30m

Belfast City

Thu 10/9

09:35-15:55

1 stop12h 20m

£681

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 7/9

08:48-09:20

2 stops18h 32m

Belfast City

Thu 10/9

09:50-21:36

2 stops17h 46m

£686

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 7/9

12:29-09:20

2 stops14h 51m

Belfast City

Wed 9/9

09:50-22:06

2 stops18h 16m

£686

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 3/9

16:20-09:20

1 stop11h 00m

Belfast City

Fri 11/9

09:50-23:57

2 stops20h 07m

£719

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sat 5/9

16:20-09:15

1 stop10h 55m

Belfast City

Sat 12/9

17:30-16:36

2 stops29h 06m

£756

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 19/7

18:10-13:40

1 stop13h 30m

Belfast City

Mon 3/8

19:35-12:30

1 stop22h 55m

£794

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 19/7

21:15-14:35

1 stop11h 20m

Belfast City

Sat 25/7

19:05-12:30

1 stop23h 25m

£817

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 4/9

18:42-16:55

2 stops16h 13m

Belfast City

Sat 12/9

17:30-16:27

2 stops28h 57m

£1,700

Flights are sorted by cheapest return flights first.

Deals found on 25/5

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Illinois to Belfast City

Have a flexible travel schedule? Discover the best time to fly to Belfast City 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 Belfast City Airport
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 Belfast City. 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 Belfast City Airport?

    A quick flight from Illinois to Belfast City Airport can take about 11h 30m. British Airways provides one of the quickest options available for as low as £660. The distance from Illinois to Belfast City Airport is about 3644 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Illinois to Belfast City Airport?

    The most popular route from Illinois to Belfast City Airport is Chicago O'Hare Intl - Belfast City. You may also consider Lambert-St Louis - Belfast City or Chicago Midway - Belfast City.

  • Can I find deals for flights from Illinois to Belfast City that include hotel bookings?

    Yes. In addition to deals on Illinois to Belfast City flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Belfast City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Belfast City.

  • Can I find deals for business class flights from Illinois to Belfast City?

    Yes. Cheapflights offers flight deals from Illinois to Belfast City 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

Travelling to a place near Belfast City Airport?

Book flights to Belfast City Airport if you plan to visit one of these locations
Carrickfergus
Bangor
Newcastle

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Why should you use Cheapflights to find cheap flight tickets from Illinois to Belfast City?

Cheapflights simply makes it quick and affordable to book flights from Illinois to Belfast City by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Illinois to Belfast City with no change fees?

Need flexible booking options for your flight to Belfast City from Illinois? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Illinois to Belfast City become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Belfast City from Illinois today and book when prices fit your budget.

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