$576+ Cheap flights from St. Louis to Watertown, NY (STL - 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ART
Oct 22 — Oct 291
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Watertown 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 St. Louis to Watertown
Cheapest
Best
Last-minute
Cheapest flights from St. Louis to WatertownExplore the most affordable flight options available from St. Louis to Watertown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
Explore the most affordable flight options available from St. Louis to Watertown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/610:59 am -
1 stop5h 01m
Wed 11/45:46 pm -
2 stops16h 44m
Deal found 9/17![American Airlines logo]()
$576
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/35:00 am -
2 stops9h 53m
Sat 11/76:00 am -
1 stop7h 43m
Deal found 9/17![American Airlines logo]()
$616
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/610:59 am -
1 stop5h 01m
Sun 11/85:46 pm -
2 stops18h 07m
Deal found 9/17![American Airlines logo]()
$732
This American Airlines deal was found by Cheapflights users on 9/18. 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 10/1711:21 am -
1 stop5h 30m
Sun 11/15:46 pm -
2 stops23h 57m
Deal found 9/18![American Airlines logo]()
$745
Best flights from St. Louis to WatertownDiscover carefully curated flight deals from St. Louis to Watertown that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
Discover carefully curated flight deals from St. Louis to Watertown that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
This American Airlines deal was found by Cheapflights users on 9/18. 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 10/1711:21 am -
1 stop5h 30m
Sun 11/15:46 pm -
2 stops23h 57m
Deal found 9/18![American Airlines logo]()
$745
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/311:01 am -
2 stops10h 49m
Sat 11/76:00 am -
2 stops8h 18m
Deal found 9/17![American Airlines logo]()
$793
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/610:00 am -
2 stops11h 27m
Wed 11/45:46 pm -
2 stops18h 07m
Deal found 9/17![American Airlines logo]()
$842
Last-minute flights from St. Louis to WatertownDiscover last-minute flight deals from St. Louis to Watertown. Data last updated September 22, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Watertown. Data last updated September 22, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/35:00 am -
2 stops9h 53m
Sat 11/76:00 am -
1 stop7h 43m
Deal found 9/17![American Airlines logo]()
$616
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/610:59 am -
1 stop5h 01m
Wed 11/45:46 pm -
2 stops16h 44m
Deal found 9/17![American Airlines logo]()
$576
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/610:59 am -
1 stop5h 01m
Sun 11/85:46 pm -
2 stops18h 07m
Deal found 9/17![American Airlines logo]()
$732
This American Airlines deal was found by Cheapflights users on 9/18. 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 10/1711:21 am -
1 stop5h 30m
Sun 11/15:46 pm -
2 stops23h 57m
Deal found 9/18![American Airlines logo]()
$745
Find flight deals from St. Louis to Watertown
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Watertown (ART). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $576 (American Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis 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 7,457,451 searches. Data last updated September 22, 2026.
Use the filters below to find and compare flights from St. Louis to Watertown that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisWatertown
STL Lambert-St Louis - ART Watertown
STLART
Lambert-St Louis
Sat 10/17
11:21 am-5:51 pm
1 stop5h 30m
Watertown
Sun 11/1
5:46 pm-4:43 pm
2 stops23h 57m
$745
Quickest round-trip
St. LouisWatertown
STL Lambert-St Louis - ART Watertown
STLART
Lambert-St Louis
Sat 10/3
11:01 am-10:50 pm
2 stops10h 49m
Watertown
Sat 11/7
6:00 am-1:18 pm
2 stops8h 18m
$793
St. LouisWatertown
STL Lambert-St Louis - ART Watertown
STLART
Lambert-St Louis
Tue 10/6
10:00 am-10:27 pm
2 stops11h 27m
Watertown
Wed 11/4
5:46 pm-10:53 am
2 stops18h 07m
$842
Sorted by cheapest first
- Most accurate provider: When it comes to deals on St. Louis-Watertown, New York flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Watertown, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Watertown, New York flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Watertown, New York flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Watertown, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Watertown
Have a flexible travel schedule? Discover the best time to fly to Watertown from St. Louis with our price prediction graph.
STL-ART
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.
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Watertown. 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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