$410+ 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 4/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BHD
Dec 3 — Dec 101
1 adult, Economy
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Cheapest flights from Illinois to BelfastExplore 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 November 3, 2025.
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 November 3, 2025.
This American Airlines deal was found by Cheapflights users on 11/1. 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.
Mon 12/13:43 pmSTL - BHD
2 stops16h 32mAmerican Airlines
Sun 12/79:10 amBHD - STL
2 stops15h 55mAmerican Airlines
Deal found 11/1![American Airlines logo]()
$625
This Mytrip deal was found by Cheapflights users on 11/1. 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.
Sat 11/156:30 pmORD - BFS
2 stops22h 10mMultiple Airlines
Tue 11/186:30 amBFS - ORD
3 stops38h 30mMultiple Airlines
Deal found 11/1![Multiple Airlines logo]()
$708
This KLM deal was found by Cheapflights users on 11/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/34:25 pmORD - BHD
1 stop22h 35mKLM
Sun 12/76:30 amBHD - ORD
1 stop13h 50mKLM
Deal found 11/1![KLM logo]()
$764
This Virgin Atlantic deal was found by Cheapflights users on 10/30. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/34:25 pmORD - BHD
1 stop18h 25mVirgin Atlantic
Sun 12/76:30 amBHD - ORD
1 stop13h 50mVirgin Atlantic
Deal found 10/30![Virgin Atlantic logo]()
$770
This Mytrip deal was found by Cheapflights users on 10/31. 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.
Tue 12/167:05 amORD - BFS
2 stops25h 20mMultiple Airlines
Tue 12/235:30 pmBFS - ORD
2 stops32h 35mMultiple Airlines
Deal found 10/31![Multiple Airlines logo]()
$772
This American Airlines deal was found by Cheapflights users on 10/30. 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 12/311:47 amORD - BHD
2 stops15h 23mAmerican Airlines
Sun 12/79:10 amBHD - ORD
1 stop13h 50mAmerican Airlines
Deal found 10/30![American Airlines logo]()
$929
This American Airlines deal was found by Cheapflights users on 11/1. 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.
Tue 12/308:40 pmORD - BHD
1 stop14h 05mAmerican Airlines
Mon 1/56:35 amBHD - ORD
2 stops17h 21mAmerican Airlines
Deal found 11/1![American Airlines logo]()
$1,055
This Ovago deal was found by Cheapflights users on 11/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:10 pmORD - BHD
1 stop11h 20mBritish Airways
Mon 1/57:25 pmBHD - ORD
1 stop27h 35mBritish Airways
Deal found 11/2![British Airways logo]()
$1,064
This Mytrip deal was found by Cheapflights users on 10/31. 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.
Tue 11/49:50 pmORD - BFS
2 stops18h 45mMultiple Airlines
Thu 11/66:30 amBFS - ORD
2 stops22h 36mMultiple Airlines
Deal found 10/31![Multiple Airlines logo]()
$1,064
This Mytrip deal was found by Cheapflights users on 11/1. 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.
Wed 12/176:30 pmORD - BFS
2 stops15h 40mMultiple Airlines
Wed 12/244:25 pmBFS - ORD
3 stops33h 35mMultiple Airlines
Deal found 11/1![Multiple Airlines logo]()
$1,097
This KLM deal was found by Cheapflights users on 10/31. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/45:09 pmMDW - BHD
2 stops17h 41mKLM
Thu 11/66:30 amBHD - MDW
2 stops15h 44mKLM
Deal found 10/31![KLM logo]()
$2,092
This Cathay Pacific deal was found by Cheapflights users on 11/1. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/13:59 pmSTL - BHD
3 stops44h 41mMultiple Airlines
Sun 12/75:35 pmBHD - STL
3 stops36h 22mMultiple Airlines
Deal found 11/1![Multiple Airlines logo]()
$13,131
Cheap flight deals from Illinois to Belfast
Keep the following information in mind while searching for Illinois to Belfast flight deals. Data was last updated November 3, 2025.
Round-trip from | $625 (American Airlines) |
|---|---|
One-way from | $410 (Kiwi.com) |
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 November 3, 2025.
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
St. LouisBelfast
STL - BHD
STLBHD
Lambert-St Louis
Mon 12/1
3:43 pm-2:15 pm
2 stops16h 32m
Belfast City
Sun 12/7
9:10 am-7:05 pm
2 stops15h 55m
$625
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Sat 11/15
6:30 pm-10:40 pm
2 stops22h 10m
Belfast Intl
Tue 11/18
6:30 am-3:00 pm
3 stops38h 30m
$708
ChicagoBelfast
ORD - BHD
ORDBHD
Chicago O'Hare Intl
Wed 12/3
4:25 pm-9:00 pm
1 stop22h 35m
Belfast City
Sun 12/7
6:30 am-2:20 pm
1 stop13h 50m
$764
ChicagoBelfast
ORD - BHD
ORDBHD
Chicago O'Hare Intl
Wed 12/3
4:25 pm-4:50 pm
1 stop18h 25m
Belfast City
Sun 12/7
6:30 am-2:20 pm
1 stop13h 50m
$770
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Tue 12/16
7:05 am-2:25 pm
2 stops25h 20m
Belfast Intl
Tue 12/23
5:30 pm-8:05 pm
2 stops32h 35m
$772
ChicagoBelfast
MDW - BHD
MDWBHD
Chicago Midway
Fri 4/3
9:30 am-9:20 pm
2 stops29h 50m
Belfast City
Tue 4/7
5:25 pm-6:08 pm
2 stops30h 43m
$847
ChicagoBelfast
MDW - BHD
MDWBHD
Chicago Midway
Wed 4/1
9:20 am-4:55 pm
2 stops25h 35m
Belfast City
Sun 4/5
5:25 pm-12:35 pm
2 stops49h 10m
$881
ChicagoBelfast
ORD - BHD
ORDBHD
Chicago O'Hare Intl
Wed 12/3
11:47 am-9:10 am
2 stops15h 23m
Belfast City
Sun 12/7
9:10 am-5:00 pm
1 stop13h 50m
$929
ChicagoBelfast
ORD - BHD
ORDBHD
Chicago O'Hare Intl
Tue 12/30
8:40 pm-4:45 pm
1 stop14h 05m
Belfast City
Mon 1/5
6:35 am-5:56 pm
2 stops17h 21m
$1,055
ChicagoBelfast
MDW - BHD
MDWBHD
Chicago Midway
Wed 4/1
1:00 pm-4:55 pm
2 stops21h 55m
Belfast City
Sun 4/5
5:25 pm-6:34 pm
2 stops31h 09m
$1,058
Showing 1-10 of 18 results
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
What is the cheapest time of day to fly from IL to BFS?
Find hourly flight availability from Illinois to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.
Unlike in the evening, when flights are generally more expensive, you can save up to 36% on flights from Illinois to Belfast by exploring options for tickets in the morning.
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.
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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.
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 November 3, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$577 | Average$706 | FlexibilityNo cancel fee | On-time70% |