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Cheap flights from Illinois to Belfast City Airport from £240

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
14 May — 21 May1
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 14 April 2026.

Sun 8/1121:45
ORD
-
BHD
1 stop13h 05m
British Airways
Fri 13/1106:45
BHD
-
ORD
1 stop13h 05m
British Airways
Deal found 12/4£645
Wed 12/818:10
ORD
-
BHD
1 stop13h 25m
American Airlines
Wed 26/806:30
BHD
-
ORD
1 stop12h 00m
American Airlines
Deal found 9/4£655
Wed 19/822:35
ORD
-
BHD
1 stop11h 05m
American Airlines
Wed 26/810:05
BHD
-
ORD
1 stop13h 30m
American Airlines
Deal found 13/4£657
Sun 8/1115:08
ORD
-
BHD
2 stops13h 12m
American Airlines
Fri 13/1106:45
BHD
-
ORD
1 stop14h 35m
American Airlines
Deal found 12/4£660
Wed 12/816:54
ORD
-
BHD
2 stops14h 41m
British Airways
Wed 26/810:05
BHD
-
ORD
2 stops19h 07m
British Airways
Deal found 9/4£668
Wed 19/817:30
ORD
-
BHD
2 stops16h 10m
British Airways
Wed 26/810:05
BHD
-
ORD
2 stops19h 05m
British Airways
Deal found 13/4£671
Sun 16/820:45
ORD
-
BHD
1 stop14h 55m
American Airlines
Sun 23/806:30
BHD
-
ORD
1 stop17h 05m
American Airlines
Deal found 10/4£694
Sun 16/821:15
ORD
-
BHD
1 stop14h 25m
British Airways
Sun 23/806:30
BHD
-
ORD
2 stops21h 40m
British Airways
Deal found 10/4£709
Mon 18/518:54
STL
-
BHD
2 stops14h 36m
American Airlines
Sun 24/506:30
BHD
-
STL
2 stops20h 00m
American Airlines
Deal found 12/4£799
Mon 7/1211:50
STL
-
BHD
2 stops16h 50m
British Airways
Thu 10/1211:05
BHD
-
STL
2 stops18h 53m
British Airways
Deal found 9/4£832
Mon 1/609:23
MDW
-
BHD
2 stops17h 57m
KLM
Wed 10/617:30
BHD
-
MDW
2 stops31h 01m
KLM
Deal found 10/4£900
Thu 23/418:38
MDW
-
BHD
2 stops16h 17m
Delta
Sun 26/409:50
BHD
-
MDW
2 stops18h 38m
Delta
Deal found 9/4£949

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 14 April 2026.

Round-trip from

£655

One-way from

£240
American Airlines
  • American Airlines
  • 12/8-26/8
  • 2 total stops
  • 25h 25m 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 14 April 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

Wed 12/8

16:54-13:35

2 stops14h 41m

Belfast City

Wed 26/8

10:05-23:12

2 stops19h 07m

£668

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 19/8

17:30-15:40

2 stops16h 10m

Belfast City

Wed 26/8

10:05-23:10

2 stops19h 05m

£671

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 16/8

21:15-17:40

1 stop14h 25m

Belfast City

Sun 23/8

06:30-22:10

2 stops21h 40m

£709
Fastest return journey

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 14/5

22:30-18:45

1 stop14h 15m

Belfast City

Tue 19/5

06:30-12:25

1 stop11h 55m

£781

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 18/5

18:54-15:30

2 stops14h 36m

Belfast City

Sun 24/5

06:30-20:30

2 stops20h 00m

£799

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 19/7

20:45-17:40

1 stop14h 55m

Belfast City

Sat 25/7

16:15-12:30

1 stop26h 15m

£841

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 15/7

16:50-09:20

1 stop10h 30m

Belfast City

Mon 20/7

17:30-14:15

1 stop26h 45m

£880

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 1/6

16:50-09:20

1 stop10h 30m

Belfast City

Wed 10/6

17:30-14:15

1 stop26h 45m

£889

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 19/8

08:45-20:55

3 stops30h 10m

Belfast City

Wed 26/8

12:15-18:15

2 stops12h 00m

£898

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Mon 1/6

09:23-09:20

2 stops17h 57m

Belfast City

Wed 10/6

17:30-18:31

2 stops31h 01m

£900

Flights are sorted by cheapest return flights first.

Deals found on 11/4

Showing 1-10 of 22 resultsSorted by cheapest first
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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 14h 36m. British Airways provides one of the quickest options available for as low as £799. The distance from Illinois to Belfast City Airport is about 3893 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 Midway - Belfast City. You may also consider Chicago O'Hare Intl - Belfast City or Lambert-St Louis - 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
Bangor
Carrickfergus
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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