$255+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BHD
Jan 17 — Jan 241
1 adult, Economy
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Belfast
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 December 18, 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 December 18, 2025.
This American Airlines deal was found by Cheapflights users on 12/16. 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 12/312:06 pmSTL - BHD
2 stops18h 09mAmerican Airlines
Wed 1/76:35 amBHD - STL
2 stops17h 59mAmerican Airlines
Deal found 12/16![American Airlines logo]()
$1,094
This FlightHub deal was found by Cheapflights users on 12/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:40 pmORD - BHD
2 stops15h 10mBritish Airways
Mon 1/57:25 pmBHD - ORD
2 stops28h 22mBritish Airways
Deal found 12/16![British Airways logo]()
$1,303
This Ovago deal was found by Cheapflights users on 12/15. 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.
Thu 12/188:40 pmORD - BHD
1 stop11h 20mBritish Airways
Sun 12/2112:10 pmBHD - ORD
2 stops25h 09mBritish Airways
Deal found 12/15![British Airways logo]()
$1,326
This Ovago deal was found by Cheapflights users on 12/15. 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 12/306:30 pmORD - BHD
1 stop11h 00mMultiple Airlines
Mon 1/57:25 pmBHD - ORD
1 stop26h 00mMultiple Airlines
Deal found 12/15![Multiple Airlines logo]()
$1,655
This Mytrip deal was found by Cheapflights users on 12/15. 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.
Thu 12/187:40 pmORD - BFS
2 stops20h 20mMultiple Airlines
Sun 12/217:25 amBFS - ORD
2 stops18h 35mMultiple Airlines
Deal found 12/15![Multiple Airlines logo]()
$1,739
This American Airlines deal was found by Cheapflights users on 12/15. 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.
Thu 12/186:30 pmORD - BHD
1 stop13h 30mAmerican Airlines
Sun 12/216:30 amBHD - ORD
1 stop18h 15mAmerican Airlines
Deal found 12/15![American Airlines logo]()
$1,750
This Trip.com deal was found by Cheapflights users on 12/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/181:05 pmSTL - BHD
2 stops25h 25mMultiple Airlines
Thu 1/87:25 amBHD - STL
2 stops22h 34mMultiple Airlines
Deal found 12/15![Multiple Airlines logo]()
$1,866
This American Airlines deal was found by Cheapflights users on 12/15. 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.
Thu 12/181:54 pmSTL - BHD
2 stops18h 06mAmerican Airlines
Thu 1/86:35 amBHD - STL
2 stops20h 40mAmerican Airlines
Deal found 12/15![American Airlines logo]()
$1,959
This KLM deal was found by Cheapflights users on 12/15. 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.
Thu 12/185:26 pmMDW - BHD
2 stops21h 34mKLM
Sun 12/216:30 amBHD - MDW
2 stops16h 49mKLM
Deal found 12/15![KLM logo]()
$3,480
This KLM deal was found by Cheapflights users on 12/14. 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.
Thu 12/185:26 pmMDW - BHD
2 stops17h 24mKLM
Sat 12/206:30 amBHD - MDW
2 stops16h 49mKLM
Deal found 12/14![KLM logo]()
$3,701
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 December 18, 2025.
Round-trip from | $605 (Mytrip) |
|---|---|
One-way from | $255 (Mytrip) |
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 December 18, 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
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Fri 1/30
6:30 pm-10:00 pm
2 stops21h 30m
Belfast Intl
Fri 2/6
8:05 am-5:20 pm
2 stops15h 15m
$605
St. LouisBelfast
STL - BHD
STLBHD
Lambert-St Louis
Mon 1/12
6:44 pm-6:35 pm
2 stops17h 51m
Belfast City
Tue 1/20
6:35 am-6:16 pm
2 stops17h 41m
$625
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Sun 1/18
6:30 pm-6:55 pm
2 stops18h 25m
Belfast Intl
Mon 2/2
10:20 pm-3:00 pm
3 stops46h 40m
$628
ChicagoBelfast
ORD - BHD
ORDBHD
Chicago O'Hare Intl
Mon 1/12
4:33 pm-2:15 pm
2 stops15h 42m
Belfast City
Mon 1/19
2:40 pm-8:04 pm
2 stops35h 24m
$640
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Mon 1/12
6:30 pm-8:15 pm
2 stops19h 45m
Belfast Intl
Mon 1/19
10:20 pm-3:00 pm
3 stops46h 40m
$656
ChicagoBelfast
ORD - BHD
ORDBHD
Chicago O'Hare Intl
Sun 1/18
4:14 pm-1:55 pm
2 stops15h 41m
Belfast City
Mon 2/2
5:45 pm-1:50 pm
1 stop26h 05m
$664
ChicagoBelfast
ORD - BHD
ORDBHD
Chicago O'Hare Intl
Sun 1/18
11:05 am-4:50 pm
2 stops23h 45m
Belfast City
Mon 2/2
5:20 pm-5:45 pm
2 stops30h 25m
$671
ChicagoBelfast
MDW - BHD
MDWBHD
Chicago Midway
Sun 1/18
5:59 pm-4:50 pm
2 stops16h 51m
Belfast City
Mon 2/2
5:20 pm-5:29 pm
2 stops30h 09m
$672
ChicagoBelfast
ORD - BHD
ORDBHD
Chicago O'Hare Intl
Sun 1/18
11:40 am-10:20 am
2 stops16h 40m
Belfast City
Sun 1/25
8:25 pm-1:50 pm
1 stop23h 25m
$690
ChicagoBelfast
ORD - BHD
ORDBHD
Chicago O'Hare Intl
Wed 2/11
9:45 pm-4:35 pm
1 stop12h 50m
Belfast City
Sun 2/15
5:35 pm-1:50 pm
1 stop26h 15m
$703
Showing 1-10 of 19 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 December 18, 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 December 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$577 | Average$705 | FlexibilityNo cancel fee | On-time70% |