Cheap flights from Belfast Intl Airport to Illinois from £289
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 25/4. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Belfast Intl to Illinois
Keep the following information in mind while searching for Belfast Intl to Illinois flight deals. Data was last updated 22 February 2025.
Find flight deals from Belfast Intl to Illinois
Cheapest flights from Belfast Intl to IllinoisExplore the most affordable flight options available from Belfast Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 February 2025.
Explore the most affordable flight options available from Belfast Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 February 2025.
Find flights from Belfast Intl to Illinois within your budget
Customise your flight search to find flights from Belfast Intl to Illinois 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 858,174 searches. Data last updated 22 February 2025.
Fly from
Fly to
Route
Depart
Return
Price
BelfastChicago
BFS - ORD
BFSORD
Belfast Intl
Mon 7/4
17:30-19:00
2 stops31h 30m
Chicago O'Hare Intl
Mon 14/4
20:50-23:50
2 stops21h 00m
BelfastChicago
BFS - ORD
BFSORD
Belfast Intl
Fri 25/4
22:00-21:46
2 stops29h 46m
Best time to book a flight from Belfast Intl to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Belfast Intl with our price prediction graph.
Travel insights for flights from Belfast Intl to Illinois
Get recent, data-driven insights about flights from Belfast Intl to Illinois including ideal travel times, pricing trends, and more.
Rainfall in Illinois by month
Plan your trip to Illinois by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.
Temperature in Illinois by month
Plan your trip to Illinois by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).
Related info for your journey
Find useful and relevant information for your journey from Belfast Intl to Illinois. 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 Illinois
See prices for flight routes from nearby airports that may be better suited for you.
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