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Cheap flights from Illinois to Belfast City Airport from £236

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BHD
21 Jul — 28 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 21 June 2026.

Wed 7/1017:00
ORD
-
BHD
1 stop14h 35m
British Airways
Wed 21/1006:30
BHD
-
ORD
1 stop15h 25m
British Airways
Deal found 19/6£655
Sun 1/1121:50
ORD
-
BHD
1 stop13h 00m
British Airways
Thu 19/1120:00
BHD
-
ORD
1 stop23h 50m
British Airways
Deal found 19/6£668
Wed 4/1115:08
ORD
-
BHD
2 stops13h 07m
American Airlines
Wed 18/1106:35
BHD
-
ORD
1 stop18h 40m
American Airlines
Deal found 19/6£670
Wed 4/1111:48
ORD
-
BHD
2 stops16h 27m
British Airways
Wed 18/1109:15
BHD
-
ORD
2 stops16h 05m
British Airways
Deal found 19/6£677
Tue 3/1116:06
ORD
-
BHD
2 stops13h 24m
British Airways
Wed 18/1111:25
BHD
-
ORD
1 stop13h 50m
British Airways
Deal found 19/6£680
Sun 4/1016:20
ORD
-
BHD
1 stop11h 00m
Delta
Mon 19/1017:30
BHD
-
ORD
1 stop26h 45m
Delta
Deal found 19/6£683
Sun 1/1115:50
ORD
-
BHD
2 stops19h 00m
Delta
Wed 18/1117:20
BHD
-
ORD
1 stop27h 05m
Delta
Deal found 19/6£686
Sun 13/909:50
ORD
-
BHD
2 stops23h 05m
Multiple Airlines
Mon 21/907:00
BHD
-
ORD
2 stops18h 15m
Multiple Airlines
Deal found 19/6£689
Sat 24/1019:05
ORD
-
BHD
1 stop14h 10m
British Airways
Wed 4/1111:25
BHD
-
ORD
1 stop13h 20m
British Airways
Deal found 19/6£691
Wed 19/821:35
STL
-
BHD
1 stop12h 05m
British Airways
Wed 2/911:35
BHD
-
STL
1 stop13h 55m
British Airways
Deal found 21/6£728
Sat 24/1013:05
MDW
-
BHD
2 stops22h 45m
KLM
Wed 4/1117:20
BHD
-
MDW
2 stops29h 30m
KLM
Deal found 19/6£731
Sun 23/821:40
STL
-
BHD
1 stop10h 55m
British Airways
Fri 4/906:30
BHD
-
STL
2 stops18h 57m
British Airways
Deal found 21/6£747

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 21 June 2026.

Round-trip from

£655

One-way from

£236
British Airways
  • British Airways
  • 7/10-21/10
  • 2 total stops
  • 30h 00m total
  • Illinois to Belfast
Search Deals
12/9
  • 12/9
  • 2 total stops
  • 18h 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 21 June 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 5/10

19:05-12:55

1 stop11h 50m

Belfast City

Sun 18/10

20:10-13:50

1 stop23h 40m

£706

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 2/11

21:50-18:35

1 stop14h 45m

Belfast City

Sun 8/11

06:30-18:45

1 stop18h 15m

£714

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sat 10/10

16:20-09:15

1 stop10h 55m

Belfast City

Mon 19/10

17:30-14:15

1 stop26h 45m

£720

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 6/10

16:20-09:20

1 stop11h 00m

Belfast City

Sat 24/10

17:30-15:25

1 stop27h 55m

£720

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 8/10

16:20-09:20

1 stop11h 00m

Belfast City

Mon 19/10

17:30-14:15

1 stop26h 45m

£720

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 24/8

12:29-09:20

2 stops14h 51m

Belfast City

Mon 31/8

17:30-14:15

1 stop26h 45m

£726

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 14/8

21:15-15:30

1 stop12h 15m

Belfast City

Thu 20/8

06:30-15:55

1 stop15h 25m

£728

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Sat 24/10

13:05-17:50

2 stops22h 45m

Belfast City

Wed 4/11

17:20-16:50

2 stops29h 30m

£731

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 8/10

16:20-09:20

1 stop11h 00m

Belfast City

Sat 24/10

17:30-15:25

1 stop27h 55m

£758

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 19/7

20:40-17:40

1 stop15h 00m

Belfast City

Sat 25/7

16:15-12:30

1 stop26h 15m

£831

Flights are sorted by cheapest return flights first.

Deals found on 19/6

Showing 1-10 of 35 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 10h 55m. British Airways provides one of the quickest options available for as low as £720. 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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