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Watertown

$224+ Cheap flights from Illinois to Watertown, NY (ART)

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ART
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Cheap flight deals from Illinois to Watertown

Keep the following information in mind while searching for Illinois to Watertown flight deals. Data was last updated October 22, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$328
(American Airlines)
Provider with most accurate pricing for Chicago (CHI)-Watertown flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Watertown flights.
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From Illinois to Watertown
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Find flight deals from Illinois to Watertown

Cheapest flights from Illinois to Watertown
Explore the most affordable flight options available from Illinois to Watertown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

This American Airlines deal was found by Cheapflights users on 10/22. 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.
Fri 12/511:31 amORD - ART
2 stops10h 32mAmerican Airlines
Sun 12/76:00 amART - ORD
1 stop7h 27mAmerican Airlines
Deal found 10/22$224
This American Airlines deal was found by Cheapflights users on 10/21. 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 11/110:00 amORD - ART
1 stop4h 43mAmerican Airlines
Wed 11/56:00 amART - ORD
1 stop7h 28mAmerican Airlines
Deal found 10/21$340
This American Airlines deal was found by Cheapflights users on 10/21. 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 11/156:05 amMLI - ART
2 stops7h 03mAmerican Airlines
Tue 11/186:00 amART - MLI
2 stops10h 02mAmerican Airlines
Deal found 10/21$399
This American Airlines deal was found by Cheapflights users on 10/21. 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 11/86:00 amPIA - ART
2 stops7h 08mAmerican Airlines
Tue 11/116:00 amART - PIA
2 stops11h 40mAmerican Airlines
Deal found 10/21$409
This American Airlines deal was found by Cheapflights users on 10/21. 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 12/277:05 amSTL - ART
2 stops10h 25mAmerican Airlines
Wed 12/317:30 amART - STL
2 stops9h 53mAmerican Airlines
Deal found 10/21$714
This American Airlines deal was found by Cheapflights users on 10/21. 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 11/44:50 pmORD - ART
1 stop5h 06mAmerican Airlines
Wed 11/56:00 amART - ORD
1 stop7h 28mAmerican Airlines
Deal found 10/21$836

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Watertown 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 October 22, 2025.
Use the filters below to find and compare flights from Illinois to Watertown that are best for you.

Fly from

Illinois

Fly to

Watertown

Route

Depart

Return

Price

ChicagoWatertown

ORD - ART

ORDART

Chicago O'Hare Intl

Fri 12/5

11:31 am-11:03 pm

2 stops10h 32m

Watertown

Sun 12/7

6:00 am-12:27 pm

1 stop7h 27m

$224

ChicagoWatertown

ORD - ART

ORDART

Chicago O'Hare Intl

Sat 3/7

9:45 am-2:55 pm

1 stop4h 10m

Watertown

Tue 3/10

4:37 pm-8:07 pm

1 stop4h 30m

$328

ChicagoWatertown

ORD - ART

ORDART

Chicago O'Hare Intl

Sat 11/1

10:00 am-3:43 pm

1 stop4h 43m

Watertown

Wed 11/5

6:00 am-12:28 pm

1 stop7h 28m

$340

MolineWatertown

MLI - ART

MLIART

Moline Quad-City

Sat 11/15

6:05 am-2:08 pm

2 stops7h 03m

Watertown

Tue 11/18

2:33 pm-11:03 pm

2 stops9h 30m

$399

PeoriaWatertown

PIA - ART

PIAART

Greater Peoria

Sat 11/8

6:00 am-2:08 pm

2 stops7h 08m

Watertown

Tue 11/11

6:00 am-4:40 pm

2 stops11h 40m

$409

St. LouisWatertown

STL - ART

STLART

Lambert-St Louis

Sat 3/28

6:39 am-2:55 pm

1 stop7h 16m

Watertown

Wed 4/1

6:22 am-2:32 pm

2 stops9h 10m

$538

St. LouisWatertown

STL - ART

STLART

Lambert-St Louis

Sat 12/27

5:00 am-6:30 pm

2 stops12h 30m

Watertown

Wed 12/31

7:30 am-4:00 pm

2 stops9h 30m

$714

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Best time to book a flight from Illinois to Watertown

Have a flexible travel schedule? Discover the best time to fly to Watertown from Illinois 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 Illinois to Watertown

What is the cheapest month to book a flight from Illinois to Watertown, New York?

Currently, August is the cheapest month in which you can book a flight from Illinois to Watertown, New York (average of $200). Flying from Illinois to Watertown, New York in March is currently the most expensive (average of $255). 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.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Watertown. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Watertown from Illinois?

    For a flight from Illinois to Watertown, you will be flying into Watertown. Watertown (ART) is just 5.6 mi from the center of the city.

  • How long is the flight from Illinois to Watertown, New York?

    For as low as $224, American Airlines can have you in Watertown, New York from Illinois in 10h 32m. There are 615 mi between Illinois and Watertown, New York.

  • What are the most popular routes from Illinois to Watertown, New York?

    While some choose either Lambert-St Louis - Watertown or Moline Quad-City - Watertown, Chicago O'Hare Intl - Watertown is the most popular route from Illinois to Watertown, New York.

  • Can I find deals for flights from Illinois to Watertown that include hotel bookings?

    Yes. In addition to deals on Illinois to Watertown flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Watertown?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Watertown.

  • Can I find deals for business class flights from Illinois to Watertown?

    Yes. Cheapflights offers flight deals from Illinois to Watertown by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Watertown, New York?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Watertown, New York (average of $200). Flying from Illinois to Watertown, New York in March is currently the most expensive (average of $255). 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.

See more FAQs

Traveling to a place near Watertown?

Book flights to Watertown if you plan to visit one of these locations
Alexandria Bay

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