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Cheap flights from Illinois to Belfast City Airport 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 26/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BHD
28 May — 4 Jun1
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 28 April 2026.

Mon 14/921:00
ORD
-
BHD
1 stop12h 30m
American Airlines
Tue 15/1208:45
BHD
-
ORD
1 stop16h 00m
American Airlines
Deal found 27/4£653
Sun 29/1117:10
ORD
-
BHD
1 stop11h 10m
British Airways
Thu 3/1206:35
BHD
-
ORD
1 stop18h 10m
British Airways
Deal found 26/4£655
Mon 14/916:51
ORD
-
BHD
2 stops16h 39m
British Airways
Tue 15/1210:00
BHD
-
ORD
1 stop14h 45m
British Airways
Deal found 27/4£658
Tue 4/821:15
ORD
-
BHD
1 stop14h 20m
British Airways
Thu 20/806:30
BHD
-
ORD
1 stop13h 20m
British Airways
Deal found 27/4£660
Tue 4/821:15
ORD
-
BHD
1 stop14h 20m
Multiple Airlines
Thu 20/806:30
BHD
-
ORD
2 stops16h 25m
Multiple Airlines
Deal found 27/4£662
Sun 23/821:40
STL
-
BHD
1 stop14h 00m
American Airlines
Wed 26/806:30
BHD
-
STL
1 stop19h 00m
American Airlines
Deal found 24/4£670
Mon 14/910:40
ORD
-
BHD
2 stops16h 40m
KLM
Thu 17/909:50
BHD
-
ORD
2 stops20h 07m
KLM
Deal found 24/4£679
Fri 16/1021:35
STL
-
BHD
1 stop14h 35m
British Airways
Tue 20/1009:40
BHD
-
STL
1 stop15h 50m
British Airways
Deal found 23/4£693
Fri 16/1018:51
STL
-
BHD
2 stops17h 19m
Multiple Airlines
Tue 20/1013:45
BHD
-
STL
1 stop11h 45m
Multiple Airlines
Deal found 23/4£714
Fri 16/1016:32
STL
-
BHD
2 stops19h 38m
American Airlines
Tue 20/1009:40
BHD
-
STL
2 stops19h 45m
American Airlines
Deal found 23/4£717
Tue 4/818:58
MDW
-
BHD
2 stops15h 57m
KLM
Thu 20/809:50
BHD
-
MDW
2 stops17h 56m
KLM
Deal found 27/4£719
Thu 1/1022:35
ORD
-
BHD
1 stop10h 55m
American Airlines
Sun 4/1006:30
BHD
-
ORD
1 stop12h 00m
American Airlines
Deal found 23/4£727

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 28 April 2026.

Round-trip from

£653

One-way from

£238
American Airlines
  • American Airlines
  • 14/9-15/12
  • 2 total stops
  • 28h 30m total
  • Illinois to Belfast
Search Deals
British Airways
  • British Airways
  • 26/7
  • 2 total stops
  • 15h 06m 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 28 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

Mon 14/9

21:00-15:30

1 stop12h 30m

Belfast City

Tue 15/12

08:45-18:45

1 stop16h 00m

£653

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 14/9

13:59-12:55

2 stops16h 56m

Belfast City

Tue 15/12

08:45-20:34

2 stops17h 49m

£665

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sun 23/8

20:00-17:40

2 stops15h 40m

Belfast City

Wed 26/8

06:30-19:30

1 stop19h 00m

£673

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 14/9

10:40-09:20

2 stops16h 40m

Belfast City

Thu 17/9

09:50-23:57

2 stops20h 07m

£679

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 4/8

16:30-15:20

2 stops16h 50m

Belfast City

Thu 20/8

09:35-22:07

2 stops18h 32m

£690

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 16/10

21:35-18:10

1 stop14h 35m

Belfast City

Tue 20/10

09:40-19:30

1 stop15h 50m

£693

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 16/10

18:51-18:10

2 stops17h 19m

Belfast City

Tue 20/10

13:45-19:30

1 stop11h 45m

£714

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Tue 4/8

18:58-16:55

2 stops15h 57m

Belfast City

Thu 20/8

09:50-21:46

2 stops17h 56m

£719
Fastest return journey

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 1/10

22:35-19:25

1 stop14h 50m

Belfast City

Sun 4/10

06:30-12:30

1 stop12h 00m

£727

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Mon 14/9

17:59-16:55

2 stops16h 56m

Belfast City

Thu 17/9

09:50-21:46

2 stops17h 56m

£741

Flights are sorted by cheapest return flights first.

Deals found on 26/4

Showing 1-10 of 41 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 12h 30m. American Airlines provides one of the quickest options available for as low as £653. 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 Chicago Midway - 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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