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Cheap flights from Illinois to Belfast City Airport from £329

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
26 Aug — 2 Sep1
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 27 July 2026.

Tue 8/922:25
ORD
-
BHD
2 stops13h 25m
Multiple Airlines
Tue 15/912:50
BHD
-
ORD
3 stops38h 35m
Multiple Airlines
Deal found 24/7£598
Wed 9/919:25
ORD
-
BHD
3 stops19h 05m
Multiple Airlines
Wed 16/912:45
BHD
-
ORD
3 stops29h 55m
Multiple Airlines
Deal found 26/7£626
Tue 1/1218:30
ORD
-
BHD
2 stops16h 25m
Multiple Airlines
Tue 8/1212:05
BHD
-
ORD
3 stops34h 50m
Multiple Airlines
Deal found 26/7£635
Tue 1/1217:10
ORD
-
BHD
1 stop12h 20m
British Airways
Tue 8/1206:35
BHD
-
ORD
1 stop13h 10m
British Airways
Deal found 26/7£650
Sun 29/1117:10
ORD
-
BHD
1 stop11h 10m
British Airways
Thu 3/1209:05
BHD
-
ORD
1 stop15h 40m
British Airways
Deal found 26/7£663
Wed 9/917:37
MDW
-
BHD
2 stops17h 18m
Delta
Wed 16/909:50
BHD
-
MDW
2 stops18h 54m
Delta
Deal found 26/7£728
Tue 8/909:29
MDW
-
BHD
2 stops17h 51m
Delta
Tue 15/909:50
BHD
-
MDW
2 stops18h 54m
Delta
Deal found 24/7£728
Wed 9/911:35
MDW
-
BHD
2 stops15h 45m
KLM
Wed 16/909:50
BHD
-
MDW
2 stops18h 54m
KLM
Deal found 26/7£771
Tue 1/1217:31
STL
-
BHD
2 stops19h 09m
British Airways
Fri 4/1206:45
BHD
-
STL
2 stops23h 13m
British Airways
Deal found 26/7£856
Sun 29/1112:43
STL
-
BHD
2 stops36h 57m
British Airways
Wed 2/1215:40
BHD
-
STL
2 stops34h 41m
British Airways
Deal found 22/7£865
Sat 8/813:25
STL
-
BHD
2 stops17h 00m
American Airlines
Sat 15/807:05
BHD
-
STL
2 stops18h 02m
American Airlines
Deal found 24/7£899
Fri 7/819:25
MDW
-
BHD
2 stops15h 30m
KLM
Mon 10/809:50
BHD
-
MDW
2 stops18h 46m
KLM
Deal found 23/7£1,067

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 27 July 2026.

Round-trip from

£598

One-way from

£329
8/9-15/9
  • 8/9-15/9
  • 5 total stops
  • 52h 00m total
  • Illinois to Belfast
Search Deals
British Airways
  • British Airways
  • 8/9
  • 2 total stops
  • 33h 27m 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 27 July 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
Fastest return journey

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 29/11

17:10-10:20

1 stop11h 10m

Belfast City

Thu 3/12

09:05-18:45

1 stop15h 40m

£663

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 25/10

18:10-10:20

1 stop11h 10m

Belfast City

Mon 2/11

19:25-16:57

2 stops27h 32m

£678

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 9/9

19:25-19:40

2 stops18h 15m

Belfast City

Wed 16/9

12:45-12:40

3 stops29h 55m

£688

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 9/9

16:01-12:00

2 stops13h 59m

Belfast City

Wed 16/9

10:05-18:15

1 stop14h 10m

£707

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 8/9

10:09-09:00

2 stops16h 51m

Belfast City

Tue 15/9

06:30-13:50

1 stop13h 20m

£708

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 24/8

16:50-09:20

1 stop10h 30m

Belfast City

Mon 31/8

17:30-14:15

1 stop26h 45m

£716

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Wed 9/9

17:37-16:55

2 stops17h 18m

Belfast City

Wed 16/9

09:50-22:44

2 stops18h 54m

£728

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Tue 8/9

09:29-09:20

2 stops17h 51m

Belfast City

Tue 15/9

09:50-22:44

2 stops18h 54m

£728

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Sun 23/8

09:24-09:20

2 stops17h 56m

Belfast City

Tue 8/9

09:50-22:44

2 stops18h 54m

£728

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 12/8

19:05-13:35

1 stop12h 30m

Belfast City

Tue 18/8

19:30-18:15

1 stop28h 45m

£821

Flights are sorted by cheapest return flights first.

Deals found on 26/7

Showing 1-10 of 23 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 11h 10m. British Airways provides one of the quickest options available for as low as £663. 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
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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