Cheap flights from Northern Ireland to Chicago O'Hare Intl Airport from £309
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 31/10. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Northern Ireland to O'Hare Intl
Keep the following information in mind while searching for Northern Ireland to O'Hare Intl flight deals. Data was last updated 10 October 2025.
Find flight deals from Northern Ireland to O'Hare Intl
Cheapest flights from Northern Ireland to O'Hare IntlExplore the most affordable flight options available from Northern Ireland to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2025.
Explore the most affordable flight options available from Northern Ireland to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2025.
Cheapflights Fare Finder
Use the filters below to find and compare flights from Northern Ireland to Chicago O'Hare Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BelfastChicago
BFS - ORD
BFSORD
Belfast Intl
Mon 24/11
22:20-15:00
3 stops46h 40m
Chicago O'Hare Intl
Mon 1/12
14:01-20:10
3 stops24h 09m
BelfastChicago
BFS - ORD
BFSORD
Belfast Intl
Sun 23/11
06:00-10:35
3 stops34h 35m
Chicago O'Hare Intl
Sun 30/11
20:25-18:55
2 stops16h 30m
BelfastChicago
BHD - ORD
BHDORD
Belfast City
Thu 20/11
10:40-17:00
1 stop12h 20m
Chicago O'Hare Intl
Mon 24/11
17:40-16:05
2 stops16h 25m
BelfastChicago
BHD - ORD
BHDORD
Belfast City
Thu 5/3
10:40-17:00
1 stop12h 20m
Chicago O'Hare Intl
Mon 9/3
19:45-14:15
1 stop13h 30m
Best time to book a flight from Northern Ireland to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Northern Ireland with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Northern Ireland to Chicago O'Hare Intl Airport
Related info for your journey
Find useful and relevant information for your journey from Northern Ireland 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 Northern Ireland to O'Hare Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Northern Ireland to O'Hare Intl
Discover the top airline that operate flights from Northern Ireland to O'Hare Intl. 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 858,174 searches. Data last updated 10 October 2025.
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How does Cheapflights help users find flights from Northern Ireland to O'Hare Intl?
When you search for this flight from Northern Ireland 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 Northern Ireland to O'Hare Intl?
Millions of users choose and trust Cheapflights to book the best flight deals from Northern Ireland to O'Hare Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Northern Ireland to O'Hare Intl with no change fees?
Need flexible booking options for your flight to O'Hare Intl from Northern Ireland? 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 Northern Ireland to O'Hare Intl become cheaper?
Yes, Cheapflights offers price alerts on Northern Ireland to O'Hare Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.