$651+ Cheap flights from Watertown, NY to St. Louis (ART - STL)
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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
ART — STL
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Watertown to St. Louis 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 Watertown to St. Louis
Cheapest
Best
Last-minute
Cheapest flights from Watertown to St. LouisExplore the most affordable flight options available from Watertown to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Watertown to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/176:00 am -
1 stop5h 41m
Sun 10/1811:21 am -
1 stop4h 39m
Deal found 9/9![American Airlines logo]()
$651
This American Airlines deal was found by Cheapflights users on 9/8. 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 9/234:24 pm -
1 stop6h 20m
Sun 9/275:15 am -
2 stops9h 38m
Deal found 9/8![American Airlines logo]()
$657
Best flights from Watertown to St. LouisDiscover carefully curated flight deals from Watertown to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Watertown to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/176:00 am -
1 stop5h 41m
Sun 10/1811:21 am -
1 stop4h 39m
Deal found 9/9![American Airlines logo]()
$651
This American Airlines deal was found by Cheapflights users on 9/8. 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 9/234:24 pm -
1 stop6h 20m
Sun 9/275:15 am -
2 stops9h 38m
Deal found 9/8![American Airlines logo]()
$657
Last-minute flights from Watertown to St. LouisDiscover last-minute flight deals from Watertown to St. Louis. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Watertown to St. Louis. Data last updated September 10, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/8. 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 9/234:24 pm -
1 stop6h 20m
Sun 9/275:15 am -
2 stops9h 38m
Deal found 9/8![American Airlines logo]()
$657
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/176:00 am -
1 stop5h 41m
Sun 10/1811:21 am -
1 stop4h 39m
Deal found 9/9![American Airlines logo]()
$651
Find flight deals from Watertown to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Watertown (ART) to St. Louis (STL). 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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $651 (American Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Watertown to St. Louis 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 10, 2026.
Use the filters below to find and compare flights from Watertown to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
WatertownSt. Louis
ART Watertown - STL Lambert-St Louis
ARTSTL
Watertown
Sat 10/17
6:00 am-10:41 am
1 stop5h 41m
Lambert-St Louis
Sun 10/18
11:21 am-5:00 pm
1 stop4h 39m
$651
WatertownSt. Louis
ART Watertown - STL Lambert-St Louis
ARTSTL
Watertown
Wed 9/23
4:24 pm-9:44 pm
1 stop6h 20m
Lambert-St Louis
Sun 9/27
5:15 am-3:53 pm
2 stops9h 38m
$657
Sorted by cheapest first
Compare providers for flights from Watertown to St. Louis
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Watertown to St. Louis in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Watertown, New York-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Watertown, New York-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Watertown, New York-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Watertown, New York-St. Louis 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 Watertown, New York-St. Louis 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 Watertown to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Watertown with our price prediction graph.
ART-STL
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 Watertown to St. Louis. 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 St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
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Chesterfield
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