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$343+ Cheap flights from Illinois to Belfast

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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BHD
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Illinois to Belfast

Cheapest flights from Illinois to Belfast
Explore the most affordable flight options available from Illinois to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This American Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/288:45 pm
ORD
-
BHD
1 stop13h 50m
American Airlines
Tue 2/310:00 am
BHD
-
ORD
1 stop13h 00m
American Airlines
Deal found 1/28$657
This British Airways deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:00 pm
ORD
-
BHD
1 stop11h 30m
British Airways
Mon 10/196:30 pm
BHD
-
ORD
1 stop27h 25m
British Airways
Deal found 1/27$666
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/114:20 pm
ORD
-
BHD
1 stop11h 00m
Delta
Wed 10/215:30 pm
BHD
-
ORD
2 stops29h 03m
Delta
Deal found 1/27$695
This Cheapflightsfares deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/205:10 pm
ORD
-
BHD
1 stop11h 20m
British Airways
Fri 2/276:45 am
BHD
-
ORD
1 stop18h 00m
British Airways
Deal found 1/27$700
This British Airways deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:10 pm
ORD
-
BHD
1 stop11h 05m
British Airways
Sun 3/89:10 am
BHD
-
ORD
1 stop15h 35m
British Airways
Deal found 1/26$706
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/111:43 pm
ORD
-
BHD
2 stops14h 47m
British Airways
Sun 10/188:05 pm
BHD
-
ORD
1 stop28h 10m
British Airways
Deal found 1/27$711
This British Airways deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:00 pm
ORD
-
BHD
1 stop11h 30m
British Airways
Sat 10/177:00 pm
BHD
-
ORD
1 stop29h 15m
British Airways
Deal found 1/27$716
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/201:26 pm
MDW
-
BHD
2 stops21h 24m
Delta
Fri 2/276:30 am
BHD
-
MDW
2 stops18h 10m
Delta
Deal found 1/27$745
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:30 pm
STL
-
BHD
2 stops21h 20m
Delta
Sat 11/286:30 am
BHD
-
STL
2 stops22h 33m
Delta
Deal found 1/26$822
This British Airways deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2510:37 am
STL
-
BHD
2 stops17h 38m
British Airways
Sun 3/18:25 pm
BHD
-
STL
2 stops33h 23m
British Airways
Deal found 1/26$841
This Mytrip deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/155:05 pm
ORD
-
BFS
2 stops20h 50m
Multiple Airlines
Sun 3/227:30 am
BFS
-
ORD
2 stops35h 55m
Multiple Airlines
Deal found 1/28$883
This Mytrip deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1312:50 pm
ORD
-
BFS
2 stops28h 10m
Multiple Airlines
Fri 3/206:00 pm
BFS
-
ORD
2 stops22h 05m
Multiple Airlines
Deal found 1/27$961

Find flight deals from Illinois to Belfast

Keep the following information in mind while searching for Illinois to Belfast flight deals. Data was last updated January 29, 2026.

Round-trip from

$700
(Cheapflightsfares)

One-way from

$343
(KAYAK)
From Illinois to Belfast
Search Deals
One-way flight from Illinois to Belfast
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Belfast 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 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Illinois to Belfast that are best for you.

Fly from

Illinois

Fly to

Belfast

Route

Depart

Return

Price

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/4

5:10 pm-10:15 am

1 stop11h 05m

Belfast City

Sun 3/8

9:10 am-7:45 pm

1 stop15h 35m

$706

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 2/20

1:39 pm-10:30 am

2 stops14h 51m

Belfast City

Fri 2/27

6:45 am-5:58 pm

2 stops17h 13m

$721

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 3/22

5:25 pm-4:50 pm

1 stop18h 25m

Belfast City

Mon 3/30

5:30 pm-2:15 pm

1 stop26h 45m

$739

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 2/20

1:26 pm-4:50 pm

2 stops21h 24m

Belfast City

Fri 2/27

6:30 am-6:40 pm

2 stops18h 10m

$745

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 3/22

5:25 pm-4:50 pm

1 stop18h 25m

Belfast City

Sun 3/29

5:30 pm-2:30 pm

1 stop27h 00m

$781

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sat 3/14

6:47 pm-10:20 am

2 stops34h 33m

Belfast City

Sun 3/29

8:10 pm-1:22 pm

2 stops47h 12m

$805

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/18

3:39 pm-2:15 pm

2 stops17h 36m

Belfast City

Sun 3/22

8:25 pm-7:56 pm

2 stops28h 31m

$827

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Wed 2/25

10:37 am-10:15 am

2 stops17h 38m

Belfast City

Sun 3/1

8:25 pm-11:48 pm

2 stops33h 23m

$841

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 3/15

5:05 pm-6:55 pm

2 stops20h 50m

Belfast Intl

Sun 3/22

7:30 am-2:25 pm

2 stops35h 55m

$883

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 3/20

12:51 pm-10:30 am

2 stops16h 39m

Belfast City

Thu 3/26

6:35 am-9:30 pm

2 stops19h 55m

$916

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 21 results
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Best time to book a flight from Illinois to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Illinois with our price prediction graph.
Estimated round-trip 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
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. 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?

    A quick flight from Illinois to Belfast can take about 11h 05m. British Airways provides one of the quickest options available for as low as $706. There are 3644 mi between Illinois and Belfast. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Illinois to Belfast?

    The most popular flight routes from Illinois to Belfast are Chicago O'Hare Intl - Belfast Intl, Chicago O'Hare Intl - Belfast City and Chicago Midway - Belfast City.

  • Can I find deals for flights from Illinois to Belfast that include hotel bookings?

    Yes. In addition to deals on Illinois to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Belfast.

  • Can I find deals for business class flights from Illinois to Belfast?

    Yes. Cheapflights offers flight deals from Illinois to Belfast 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Illinois to Belfast

Discover the top airline that operate flights from Illinois to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$577Average$708FlexibilityNo cancel feeOn-time70%

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