$749+ 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 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ART
Jul 17 — Jul 241
Round-trip
1 adult, Economy
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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 June 17, 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 June 17, 2026.
This American Airlines deal was found by Cheapflights users on 6/15. 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.
Sun 7/125:10 am
STL
- ART
2 stops9h 47m
American Airlines
Sat 7/186:00 am
ART
- STL
1 stop5h 48m
American Airlines
Deal found 6/15![American Airlines logo]()
$749
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 June 17, 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 June 17, 2026.
This American Airlines deal was found by Cheapflights users on 6/15. 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.
Sun 7/125:10 am
STL
- ART
2 stops9h 47m
American Airlines
Sat 7/186:00 am
ART
- STL
1 stop5h 48m
American Airlines
Deal found 6/15![American Airlines logo]()
$749
Last-minute flights from St. Louis to WatertownDiscover last-minute flight deals from St. Louis to Watertown. Data last updated June 17, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Watertown. Data last updated June 17, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/15. 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.
Sun 7/125:10 am
STL
- ART
2 stops9h 47m
American Airlines
Sat 7/186:00 am
ART
- STL
1 stop5h 48m
American Airlines
Deal found 6/15![American Airlines logo]()
$749
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 June 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $749 (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 2,558,603 searches. Data last updated June 17, 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
Quickest round-trip
St. LouisWatertown
STL - ART
STLART
Lambert-St Louis
Sun 7/12
5:10 am-3:57 pm
2 stops9h 47m
Watertown
Sat 7/18
6:00 am-10:48 am
1 stop5h 48m
$749
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.
Traveling to a place near Watertown?
Book flights to Watertown if you plan to visit one of these locationsAlexandria Bay
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