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).

What cabin classes can I book on flights from St. Louis to Watertown?

Only Economy Class is available on flights from St. Louis to Watertown.

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

Most connecting flights from St. Louis to Watertown pass through Philadelphia (PHL), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

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.

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 $570 to $945. That means the highest observed fare was about 65% higher than the lowest one.

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.

What is the cheapest airline to fly from St. Louis to Watertown?

American Airlines ($570) offered the cheapest round-trip ticket from St. Louis to Watertown in the last 5 days.

What is the cheapest layover airport when flying from St. Louis to Watertown?

Flights via Philadelphia (PHL) offer the most affordable fares, with an average round-trip price of $434. Based on KAYAK data over the past 3 months.

When flying from St. Louis to Watertown which airport offers the shortest layover?

Philadelphia (PHL) had the shortest average connection time for St. Louis to Watertown layovers at 265 minutes over the past 3 months.

$570 CHEAP FLIGHTS from St. Louis to Watertown (STL - ART)

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Cheapest round-trip

$570

Typical prices: $328-$503

American Airlines

Wed 10/17Thu 11/1

STL - ART • 1 stop

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Flight Deals

Cheap Flights from St. Louis to Watertown (STL-ART)

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

Round-trip

One-way

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

Sat, Oct 17 - Sun, Nov 1

11:21 am - 5:51 pmSTL Lambert-St Louis-ART Watertown

5h 30m1 stop Philadelphia

5:46 pm - 6:17 pmART Watertown-STL Lambert-St Louis

25h 31m2 stops Philadelphia Chicago O'Hare Intl

$570American Airlines

Fri, Oct 16 - Sun, Nov 1

11:21 am - 5:00 pmSTL Lambert-St Louis-ART Watertown

4h 39m1 stop Philadelphia

5:46 pm - 6:17 pmART Watertown-STL Lambert-St Louis

25h 31m2 stops Philadelphia Chicago O'Hare Intl

$704American Airlines

Sat, Oct 17 - Sun, Nov 1

5:00 am - 5:51 pmSTL Lambert-St Louis-ART Watertown

11h 51m2 stops Chicago O'Hare Intl Philadelphia

5:46 pm - 10:53 amART Watertown-STL Lambert-St Louis

18h 07m2 stops Philadelphia Chicago O'Hare Intl

$716American Airlines

Fri, Oct 16 - Sun, Nov 1

5:00 am - 5:00 pmSTL Lambert-St Louis-ART Watertown

11h 00m2 stops Charlotte Douglas Philadelphia

5:46 pm - 6:17 pmART Watertown-STL Lambert-St Louis

25h 31m2 stops Philadelphia Chicago O'Hare Intl

$813American Airlines

Sat, Oct 17 - Sun, Nov 1

6:00 am - 5:51 pmSTL Lambert-St Louis-ART Watertown

10h 51m1 stop Philadelphia

5:46 pm - 12:43 pmART Watertown-STL Lambert-St Louis

19h 57m1 stop Philadelphia

$831American Airlines

Fri, Oct 16 - Sun, Nov 1

6:00 am - 10:27 pmSTL Lambert-St Louis-ART Watertown

15h 27m1 stop Philadelphia

5:46 pm - 8:26 pmART Watertown-STL Lambert-St Louis

27h 40m1 stop Philadelphia

$915American Airlines

Sun, Oct 18 - Sun, Nov 1

6:00 am - 5:00 pmSTL Lambert-St Louis-ART Watertown

10h 00m1 stop Philadelphia

5:46 pm - 8:26 pmART Watertown-STL Lambert-St Louis

27h 40m1 stop Philadelphia

$945American 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.

Prices

Airlines

Layovers

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

Round-trip flights from St. Louis to Watertown start at $570. 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 $570 on American Airlines.

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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

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

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).
What cabin classes can I book on flights from St. Louis to Watertown?
Only Economy Class is available on flights from St. Louis to Watertown.
Which airports do connecting flights from St. Louis to Watertown pass through?
Most connecting flights from St. Louis to Watertown pass through Philadelphia (PHL), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.
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.
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 $570 to $945. That means the highest observed fare was about 65% higher than the lowest one.
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.

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.

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STL - ART

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Everything you should know

Cheap Flights from St. Louis to Watertown (STL-ART)

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

Recent one-way flight deals from St. Louis to Watertown

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

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

What is the cheapest airline to fly from St. Louis to Watertown?

What is the cheapest layover airport when flying from St. Louis to Watertown?

When flying from St. Louis to Watertown which airport offers the shortest layover?

When to book flights from St. Louis to Watertown

Your St. Louis to Watertown flight questions, answered

Your guide to booking St. Louis to Watertown flights

More options for your flight from St. Louis to Watertown

Complete your trip to Watertown with a hotel stay or car rental

Information on your arrival and departure airports

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Flights from domestic origins to Watertown

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