Cheap flights from Belfast Intl Airport to Chicago O'Hare Intl Airport from £555
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/11. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Belfast Intl to O'Hare Intl
Cheapest flights from Belfast Intl to O'Hare IntlExplore the most affordable flight options available from Belfast Intl to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 October 2026.
Explore the most affordable flight options available from Belfast Intl to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 October 2026.
Best flights from Belfast Intl to O'Hare IntlDiscover carefully curated flight deals from Belfast Intl to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 October 2026.
Discover carefully curated flight deals from Belfast Intl to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 October 2026.
Last-minute flights from Belfast Intl to O'Hare IntlDiscover last-minute flight deals from Belfast Intl to O'Hare Intl. Data last updated 7 October 2026 and is based on user searches.
Discover last-minute flight deals from Belfast Intl to O'Hare Intl. Data last updated 7 October 2026 and is based on user searches.
Find flight deals from Belfast Intl to O'Hare Intl
Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 7 October 2026.
Cheapflights Fare Finder
Use the filters below to find and compare flights from Belfast Intl Airport to Chicago O'Hare Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
BelfastChicago
BFS Belfast Intl - ORD Chicago O'Hare Intl
BFSORD
Belfast Intl
Tue 17/11
08:25-17:20
2 stops14h 55m
Chicago O'Hare Intl
Tue 24/11
18:30-20:55
2 stops20h 25m
BelfastChicago
BFS Belfast Intl - ORD Chicago O'Hare Intl
BFSORD
Belfast Intl
Thu 19/11
14:45-16:45
2 stops32h 00m
Chicago O'Hare Intl
Thu 26/11
19:10-22:15
2 stops21h 05m
BelfastChicago
BFS Belfast Intl - ORD Chicago O'Hare Intl
BFSORD
Belfast Intl
Mon 16/11
10:45-16:45
2 stops36h 00m
Chicago O'Hare Intl
Mon 23/11
19:10-22:20
2 stops21h 10m
BelfastChicago
BFS Belfast Intl - ORD Chicago O'Hare Intl
BFSORD
Belfast Intl
Fri 20/11
14:50-16:45
2 stops31h 55m
Chicago O'Hare Intl
Fri 27/11
19:10-22:00
2 stops20h 50m
BelfastChicago
BFS Belfast Intl - ORD Chicago O'Hare Intl
BFSORD
Belfast Intl
Fri 11/12
08:20-17:20
2 stops15h 00m
Chicago O'Hare Intl
Sat 19/12
18:30-18:15
2 stops17h 45m
Best time to book a flight from Belfast Intl to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Belfast Intl with our price prediction graph.
Related info for your journey
Find useful and relevant information for your journey from Belfast Intl to O'Hare Intl. 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 Belfast Intl to O'Hare Intl
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Complete your trip
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Direct flights to Illinois
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Search flights from Belfast Intl to O'Hare Intl by cabin class
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Other flights to O'Hare Intl
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 7 October 2026.
Belfast Intl and O'Hare Intl flights
Browse other Belfast Intl and O'Hare Intl flight options. Last updated on 7 October 2026.
Other flights from Belfast Intl
Browse through other flights departing from Belfast Intl. Flights are based on user searches made on Cheapflights and were last updated on 7 October 2026.
Popular flight searches
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How does Cheapflights help users find flights from Belfast Intl to O'Hare Intl?
When you search for this flight from Belfast Intl to O'Hare Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to O'Hare Intl?
Cheapflights helps you find that perfect flight to O'Hare Intl from Belfast Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Belfast Intl to O'Hare Intl with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Belfast Intl to O'Hare Intl, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Belfast Intl to O'Hare Intl become cheaper?
Yes! Start tracking prices for Belfast Intl to O'Hare Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.