$443+ 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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ART
Nov 29 — Dec 61
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
One-way
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 October 30, 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 October 30, 2026.
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/1211:35 am -
2 stops10h 20m
Mon 11/166:00 am -
2 stops8h 18m
Deal found 10/28![American Airlines logo]()
$719
This American Airlines deal was found by Cheapflights users on 10/27. 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 11/1110:37 am -
2 stops11h 18m
Sun 11/155:46 pm -
2 stops20h 04m
Deal found 10/27![American Airlines logo]()
$956
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 October 30, 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 October 30, 2026.
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/1211:35 am -
2 stops10h 20m
Mon 11/166:00 am -
2 stops8h 18m
Deal found 10/28![American Airlines logo]()
$719
This American Airlines deal was found by Cheapflights users on 10/27. 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 11/1110:37 am -
2 stops11h 18m
Sun 11/155:46 pm -
2 stops20h 04m
Deal found 10/27![American Airlines logo]()
$956
Last-minute flights from St. Louis to WatertownDiscover last-minute flight deals from St. Louis to Watertown. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Watertown. Data last updated October 30, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/27. 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 11/1110:37 am -
2 stops11h 18m
Sun 11/155:46 pm -
2 stops20h 04m
Deal found 10/27![American Airlines logo]()
$956
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/1211:35 am -
2 stops10h 20m
Mon 11/166:00 am -
2 stops8h 18m
Deal found 10/28![American Airlines logo]()
$719
One-way flights from St. Louis to WatertownSearch for one-way flight options from St. Louis to Watertown. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
Search for one-way flight options from St. Louis to Watertown. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This American Airlines deal was found by Cheapflights users on 10/27. 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 12/246:12 am -
1 stop10h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![American Airlines logo]()
$443
This American Airlines deal was found by Cheapflights users on 10/27. 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 11/116:30 am -
2 stops9h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![American Airlines logo]()
$487
This American Airlines deal was found by Cheapflights users on 10/27. 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 12/258:00 am -
2 stops8h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![American Airlines logo]()
$556
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 October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $719 (American Airlines) |
One-way from | $443 (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 October 30, 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
Thu 12/24
6:12 am-5:14 pm
1 stop10h 02m
Watertown
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$443
Quickest round-trip
St. LouisWatertown
STL Lambert-St Louis - ART Watertown
STLART
Lambert-St Louis
Wed 11/11
6:30 am-5:21 pm
2 stops9h 51m
Watertown
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$487
St. LouisWatertown
STL Lambert-St Louis - ART Watertown
STLART
Lambert-St Louis
Thu 11/12
11:35 am-10:55 pm
2 stops10h 20m
Watertown
Mon 11/16
6:00 am-1:18 pm
2 stops8h 18m
$719
St. LouisWatertown
STL Lambert-St Louis - ART Watertown
STLART
Lambert-St Louis
Wed 11/11
10:37 am-10:55 pm
2 stops11h 18m
Watertown
Sun 11/15
5:46 pm-12:50 pm
2 stops20h 04m
$956
Sorted by cheapest first
Compare providers for flights from St. Louis to Watertown
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 St. Louis to Watertown in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- 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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