$511+ Cheap flights from Niagara Falls (IAG) to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
IAG — ORD
Feb 28 — Mar 71
1 adult, Economy
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Cheapest flights from Niagara Falls to IllinoisExplore the most affordable flight options available from Niagara Falls to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.
Explore the most affordable flight options available from Niagara Falls to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/166:14 pm
IAG
- ORD
2 stops42h 08m
Multiple Airlines
Mon 3/168:05 am
ORD
- IAG
1 stop11h 10m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$511
Find flight deals from Niagara Falls to Illinois
Keep the following information in mind while searching for Niagara Falls to Illinois flight deals. Data was last updated January 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $511 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Niagara Falls 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 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Niagara Falls to Illinois that are best for you.
Fly from
Niagara Falls
Fly to
Illinois
Route
Depart
Return
Price
Niagara FallsChicago
IAG - ORD
IAGORD
Niagara Falls
Mon 2/16
6:14 pm-11:22 am
2 stops42h 08m
Chicago O'Hare Intl
Mon 3/16
8:05 am-8:15 pm
1 stop11h 10m
$511
Best time to book a flight from Niagara Falls to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Niagara Falls 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 Niagara Falls to Illinois
What is the cheapest month to book a flight from Niagara Falls to Illinois?
Currently, July is the cheapest month in which you can book a flight from Niagara Falls to Illinois (average of $77). Flying from Niagara Falls to Illinois in December is currently the most expensive (average of $259). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.