Find flights
When to book
FAQs

Cheap flights from Illinois to Belfast City Airport from £237

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 Jul — 21 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 14 June 2026.

Sun 18/1021:15
ORD
-
BHD
1 stop11h 20m
British Airways
Tue 20/1019:30
BHD
-
ORD
1 stop28h 45m
British Airways
Deal found 10/6£659
Mon 24/817:35
ORD
-
BHD
2 stops18h 25m
Multiple Airlines
Mon 31/807:00
BHD
-
ORD
3 stops41h 15m
Multiple Airlines
Deal found 10/6£661
Mon 16/1121:45
ORD
-
BHD
1 stop12h 20m
British Airways
Mon 30/1106:35
BHD
-
ORD
1 stop13h 15m
British Airways
Deal found 9/6£673
Sat 8/819:25
ORD
-
BHD
2 stops19h 40m
Multiple Airlines
Wed 12/807:00
BHD
-
ORD
3 stops33h 16m
Multiple Airlines
Deal found 13/6£676
Wed 5/808:45
ORD
-
BHD
3 stops22h 35m
Multiple Airlines
Wed 12/807:00
BHD
-
ORD
3 stops33h 16m
Multiple Airlines
Deal found 13/6£693
Mon 24/819:05
ORD
-
BHD
1 stop11h 50m
British Airways
Mon 31/815:20
BHD
-
ORD
1 stop28h 30m
British Airways
Deal found 13/6£694
Mon 24/812:29
ORD
-
BHD
2 stops14h 51m
KLM
Mon 31/817:30
BHD
-
ORD
1 stop26h 45m
KLM
Deal found 10/6£717
Fri 16/1018:45
MDW
-
BHD
2 stops16h 10m
KLM
Sun 25/1017:20
BHD
-
MDW
2 stops28h 30m
KLM
Deal found 13/6£825
Mon 16/1114:50
STL
-
BHD
2 stops17h 25m
British Airways
Thu 19/1106:35
BHD
-
STL
2 stops23h 30m
British Airways
Deal found 9/6£851
Tue 4/810:54
MDW
-
BHD
2 stops16h 26m
KLM
Wed 12/809:50
BHD
-
MDW
2 stops18h 46m
KLM
Deal found 13/6£1,498
Thu 6/812:46
MDW
-
BHD
2 stops14h 34m
KLM
Wed 12/809:50
BHD
-
MDW
2 stops18h 46m
KLM
Deal found 13/6£1,535
Tue 4/812:46
MDW
-
BHD
2 stops14h 34m
KLM
Tue 11/809:50
BHD
-
MDW
2 stops18h 46m
KLM
Deal found 13/6£2,101

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 June 2026.

Round-trip from

£637

One-way from

£237
2/8-18/8
  • 2/8-18/8
  • 5 total stops
  • 48h 05m total
  • Illinois to Belfast
Search Deals
British Airways
  • British Airways
  • 8/9
  • 2 total stops
  • 15h 51m 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 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 24/8

19:05-12:55

1 stop11h 50m

Belfast City

Mon 31/8

15:20-13:50

1 stop28h 30m

£693

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 24/8

22:30-19:25

1 stop14h 55m

Belfast City

Mon 31/8

19:35-19:46

2 stops30h 11m

£708

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

£717
Fastest return journey

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 5/8

22:30-15:40

1 stop11h 10m

Belfast City

Wed 12/8

06:30-17:35

1 stop17h 05m

£740

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 3/8

19:30-16:55

2 stops15h 25m

Belfast City

Wed 12/8

17:30-14:15

1 stop26h 45m

£759

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 4/8

10:30-09:20

2 stops16h 50m

Belfast City

Tue 11/8

17:30-15:01

2 stops27h 31m

£766

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 5/8

10:09-08:50

2 stops16h 41m

Belfast City

Wed 12/8

10:05-23:30

2 stops19h 25m

£777

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 16/10

18:45-16:55

2 stops16h 10m

Belfast City

Sun 25/10

17:20-16:50

2 stops28h 30m

£825

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 16/11

14:50-14:15

2 stops17h 25m

Belfast City

Thu 19/11

06:35-00:05

2 stops23h 30m

£851

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Wed 5/8

18:42-16:55

2 stops16h 13m

Belfast City

Wed 12/8

09:50-22:36

2 stops18h 46m

£1,498

Flights are sorted by cheapest return flights first.

Deals found on 9/6

Showing 1-10 of 40 resultsSorted by cheapest first
1
2
3
4

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 50m. British Airways provides one of the quickest options available for as low as £693. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Illinois to Belfast City?

Cheapflights helps you search for flights from Illinois to Belfast City via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.