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Cheap flights from Illinois to Belfast City Airport from £267

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BHD
12 Oct — 19 Oct1
1 adult
1 adult, Economy

Cheap 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 12 September 2025.

Round-trip from

£467

One-way from

£267
British Airways
  • British Airways
  • 3/12-7/12
  • 2 total stops
  • 42h 45m total
  • Illinois to Belfast
Search Deals
15/12
  • 15/12
  • 2 total stops
  • 21h 17m total
  • Illinois to Belfast
Search Deals

Find flight deals from Illinois to Belfast City

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 12 September 2025.

Wed 3/1217:10ORD - BHD
1 stop11h 05mBritish Airways
Sun 7/1212:10BHD - ORD
1 stop31h 40mBritish Airways
Deal found 9/9£467
Fri 3/1014:05ORD - BHD
2 stops20h 50mDelta
Tue 7/1006:30BHD - ORD
1 stop13h 40mDelta
Deal found 9/9£506
Fri 3/1013:08MDW - BHD
2 stops21h 47mDelta
Tue 7/1017:25BHD - MDW
2 stops31h 00mDelta
Deal found 9/9£514
Mon 29/919:59STL - BHD
2 stops17h 36mMultiple Airlines
Thu 2/1006:35BHD - STL
2 stops18h 35mMultiple Airlines
Deal found 10/9£539
Fri 3/1016:15ORD - BHD
1 stop18h 40mVirgin Atlantic
Tue 7/1006:30BHD - ORD
1 stop13h 40mVirgin Atlantic
Deal found 9/9£574
Fri 17/1013:08MDW - BHD
2 stops26h 07mVirgin Atlantic
Tue 21/1017:25BHD - MDW
2 stops31h 00mVirgin Atlantic
Deal found 10/9£585
Wed 17/917:40ORD - BHD
1 stop15h 55mAmerican Airlines
Wed 24/906:50BHD - ORD
1 stop16h 10mAmerican Airlines
Deal found 11/9£587
Fri 26/914:11STL - BHD
2 stops19h 19mAmerican Airlines
Sat 4/1007:05BHD - STL
2 stops17h 15mAmerican Airlines
Deal found 10/9£597
Wed 3/1219:10ORD - BHD
2 stops39h 40mVirgin Atlantic
Sun 7/1206:30BHD - ORD
1 stop13h 50mVirgin Atlantic
Deal found 9/9£614
Wed 3/1217:10ORD - BHD
1 stop11h 05mAmerican Airlines
Sun 7/1209:10BHD - ORD
2 stops14h 45mAmerican Airlines
Deal found 11/9£615
Mon 29/919:59STL - BHD
2 stops13h 41mBritish Airways
Thu 2/1016:20BHD - STL
3 stops23h 06mBritish Airways
Deal found 10/9£678
Fri 26/906:00STL - BHD
2 stops20h 50mBritish Airways
Sat 4/1016:15BHD - STL
3 stops23h 11mBritish Airways
Deal found 10/9£752

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 12 September 2025.
Use the filters below to find and compare flights from Illinois to Belfast City Airport that are best for you.

Fly from

Illinois

Fly to

Belfast City

Route

Depart

Return

Price

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/12

17:10-10:15

1 stop11h 05m

Belfast City

Sun 7/12

12:10-13:50

1 stop31h 40m

£467

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 3/10

14:05-16:55

2 stops20h 50m

Belfast City

Tue 7/10

06:30-14:10

1 stop13h 40m

£506

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 3/10

13:08-16:55

2 stops21h 47m

Belfast City

Tue 7/10

17:25-18:25

2 stops31h 00m

£514

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 29/9

19:59-19:35

2 stops17h 36m

Belfast City

Thu 2/10

06:35-19:10

2 stops18h 35m

£539

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 3/10

16:15-16:55

1 stop18h 40m

Belfast City

Tue 7/10

06:30-14:10

1 stop13h 40m

£574

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 17/10

13:48-21:15

2 stops25h 27m

Belfast City

Tue 21/10

17:25-18:25

2 stops31h 00m

£585

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sun 1/3

19:05-21:00

2 stops19h 55m

Belfast City

Thu 5/3

06:30-23:40

2 stops23h 10m

£591

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 26/9

14:11-15:30

2 stops19h 19m

Belfast City

Sat 4/10

07:05-18:20

2 stops17h 15m

£597

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/12

19:10-16:50

2 stops39h 40m

Belfast City

Sun 7/12

06:30-14:20

1 stop13h 50m

£614

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/12

17:10-10:15

1 stop11h 05m

Belfast City

Sun 7/12

09:10-17:55

2 stops14h 45m

£615

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Showing 1-10 of 21 results
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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 05m. British Airways provides one of the quickest options available for as low as £467. 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 cheapest airlines to fly from Illinois to Belfast City Airport one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at £309. British Airways flights start at £331 while deals on Delta start at £380 one-way.

  • 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.

  • What is the cheapest month to book a flight from Illinois to Belfast City Airport?

    Currently, April is the cheapest month in which you can book a flight from Illinois to Belfast City Airport (average of £98). Flying from Illinois to Belfast City Airport in December is currently the most expensive (average of £116). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Newcastle
Bangor
Carrickfergus

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Alternative routes for Illinois to Belfast City

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Why should you use Cheapflights to find cheap flight tickets from Illinois to Belfast City?

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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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