STL - ART

$880 Find Cheap Flights from St. Louis to Watertown - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$880
Typical prices: $328-$503
American Airlines
Mon 9/3Fri 9/7
STL - ART • 2 stops
Top layover airports
Charlotte Douglas (CLT)
Cheapest • Avg $389 (round-trip)
Philadelphia (PHL)
Shortest trip • 6h 18m (one-way)
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Cheap Flights from St. Louis to Watertown (STL-ART)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Watertown

Thu, Sep 3 - Mon, Sep 7
American Airlines Logo
1:25 pm - 10:55 pmSTL  Lambert-St Louis-ART Watertown
8h 30m2 stops Chicago O'Hare Intl Philadelphia
American Airlines Logo
6:00 am - 10:52 amART  Watertown-STL Lambert-St Louis
5h 52m1 stop Philadelphia
$880American Airlines
Thu, Sep 3 - Mon, Sep 7
American Airlines Logo
10:22 am - 10:55 pmSTL  Lambert-St Louis-ART Watertown
11h 33m2 stops Charlotte Douglas Philadelphia
American Airlines Logo
6:00 am - 1:02 pmART  Watertown-STL Lambert-St Louis
8h 02m2 stops Philadelphia Charlotte Douglas
$885American Airlines
Thu, Sep 3 - Mon, Sep 7
American Airlines Logo
11:22 am - 10:55 pmSTL  Lambert-St Louis-ART Watertown
10h 33m1 stop Philadelphia
American Airlines Logo
6:00 am - 10:52 amART  Watertown-STL Lambert-St Louis
5h 52m1 stop Philadelphia
$1,055American Airlines
Booking Insights

Price, demand and travel trends for St. Louis to Watertown flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from St. Louis to Watertown with more confidence.

How much is a round-trip flight from St. Louis to Watertown?

Round-trip flights from St. Louis to Watertown start at $880. Prices are above average for this route right now, with typical round-trip fares ranging from $328 to $503. The lowest price found in the past 5 days was $880 on American Airlines.

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Key details for St. Louis to Watertown flights

Cheapest flight

$880
Flight from St. Louis to Watertown

When to book flights from St. Louis to Watertown

Are your dates flexible? Find out the best times to travel from St. Louis to Watertown based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your St. Louis to Watertown flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from St. Louis to Watertown?

    Flights from St. Louis to Watertown usually depart from Lambert-St Louis (STL) and arrive at Watertown (ART).

  • Which airports do connecting flights from St. Louis to Watertown pass through?

    Connecting flights from St. Louis to Watertown most commonly pass through:

    • Philadelphia (PHL) - 83% of one-stop connections
    • Charlotte Douglas (CLT) - 17% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

  • Can I save money by using flexible dates for flights from St. Louis to Watertown?

    Yes. Being flexible with your travel dates can save you up to 70% on the St. Louis to Watertown route. Tuesday is the cheapest departure day at $238 round-trip on average, while Thursday is the most expensive at $774, a difference of $536. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How long is a flight from St. Louis to Watertown?

    There are currently no nonstop flights available from St. Louis to Watertown. Flights with 1 layover take between 6h 15m and 6h 18m in total, depending on the connection.

  • Do I need a passport to fly from St. Louis to Watertown?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from St. Louis to Watertown changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $880 to $1,055. That means the highest observed fare was about 19% higher than the lowest one.

  • How much time can I save by choosing a different layover airport from St. Louis to Watertown?

    Flying via Charlotte Douglas (CLT) gives the shortest average 1-stop total travel time at 6h 15m, compared with 6h 18m via Philadelphia (PHL).

  • What is the time difference between St. Louis and Watertown?

    Watertown is 1 hour ahead of St. Louis (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • How much should I expect to pay for a St. Louis to Watertown flight?

    Round-trip flights from St. Louis to Watertown range from $328 to $503, with an average of $328 over the past 12 months. Anything below $328 counts as a good deal.

Your guide to booking St. Louis to Watertown flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Thursday. On this route, Tuesday flights average $238 - about $536 less than Thursday (69% savings) based on the last 12 months.

Everything you need to know for your flight from St. Louis to Watertown

Information on your arrival and departure airports

St. Louis (STL)
Watertown (ART)