$258+ Cheap flights from Watertown, NY (ART) 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
ART — ORD
Dec 26 — Jan 21
1 adult, Economy
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Find cheap flights from Watertown to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 Watertown to Illinois
Keep the following information in mind while searching for Watertown to Illinois flight deals. Data was last updated November 26, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $258 (American Airlines) |
Find flight deals from Watertown to Illinois
Cheapest flights from Watertown to IllinoisExplore the most affordable flight options available from Watertown to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.
Explore the most affordable flight options available from Watertown to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.
This American Airlines deal was found by Cheapflights users on 11/25. 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 12/106:00 amART - ORD
1 stop7h 28mAmerican Airlines
Sun 12/148:29 amORD - ART
1 stop4h 36mAmerican Airlines
Deal found 11/25![American Airlines logo]()
$258
This American Airlines deal was found by Cheapflights users on 11/24. 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.
Tue 12/96:00 amART - STL
1 stop5h 26mAmerican Airlines
Sat 12/136:00 amSTL - ART
1 stop7h 05mAmerican Airlines
Deal found 11/24![American Airlines logo]()
$268
This American Airlines deal was found by Cheapflights users on 11/26. 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 12/116:00 amART - ORD
1 stop7h 27mAmerican Airlines
Mon 12/1511:31 amORD - ART
2 stops10h 32mAmerican Airlines
Deal found 11/26![American Airlines logo]()
$383
This American Airlines deal was found by Cheapflights users on 11/24. 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.
Sat 12/276:00 amART - STL
2 stops11h 23mAmerican Airlines
Wed 1/79:33 amSTL - ART
1 stop7h 41mAmerican Airlines
Deal found 11/24![American Airlines logo]()
$535
Cheapflights Fare Finder
Customize your flight search to find flights from Watertown 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 November 26, 2025.
Use the filters below to find and compare flights from Watertown to Illinois that are best for you.
Fly from
Watertown
Fly to
Illinois
Route
Depart
Return
Price
WatertownChicago
ART - ORD
ARTORD
Watertown
Wed 12/10
6:00 am-12:28 pm
1 stop7h 28m
Chicago O'Hare Intl
Sun 12/14
8:29 am-2:05 pm
1 stop4h 36m
$258
WatertownSt. Louis
ART - STL
ARTSTL
Watertown
Tue 12/9
6:00 am-10:26 am
1 stop5h 26m
Lambert-St Louis
Sat 12/13
6:00 am-2:05 pm
1 stop7h 05m
$268
WatertownChicago
ART - ORD
ARTORD
Watertown
Tue 1/27
7:00 am-1:59 pm
1 stop7h 59m
Chicago O'Hare Intl
Sat 1/31
2:50 pm-9:23 pm
1 stop5h 33m
$288
WatertownSt. Louis
ART - STL
ARTSTL
Watertown
Tue 1/20
7:00 am-11:41 am
1 stop5h 41m
Lambert-St Louis
Sat 1/24
9:33 am-6:14 pm
1 stop7h 41m
$308
WatertownSt. Louis
ART - STL
ARTSTL
Watertown
Sat 12/27
6:00 am-4:23 pm
2 stops11h 23m
Lambert-St Louis
Wed 1/7
8:13 am-6:14 pm
2 stops9h 01m
$540
Best time to book a flight from Watertown to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Watertown 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 Watertown to Illinois
What is the cheapest month to book a flight from Watertown, New York to Illinois?
Currently, February is the cheapest month in which you can book a flight from Watertown, New York to Illinois (average of $144). Flying from Watertown, New York to Illinois in July is currently the most expensive (average of $271). 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.