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Cheap flights from Watertown, New York to St. Louis from $886

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Watertown, New York to St. Louis departing on 4/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Watertown, New York to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:00 am - 12:48 pm
ART
-
STL
7h 48m
1 stop
American Airlines Logo
12:55 pm - 11:23 pm
STL
-
ART
9h 28m
2 stops
$886American Airlines
Mon, Apr 13 - Wed, Apr 15
American Airlines Logo
6:00 am - 4:41 pm
ART
-
STL
11h 41m
2 stops
American Airlines Logo
12:55 pm - 11:23 pm
STL
-
ART
9h 28m
2 stops
$891American Airlines
Mon, Apr 13 - Wed, Apr 15
American Airlines Logo
6:00 am - 12:48 pm
ART
-
STL
7h 48m
1 stop
American Airlines Logo
6:29 am - 11:23 pm
STL
-
ART
15h 54m
1 stop
$993American Airlines
Mon, Apr 13 - Wed, Apr 15
American Airlines Logo
6:00 am - 12:48 pm
ART
-
STL
7h 48m
1 stop
American Airlines Logo
1:29 pm - 11:23 pm
STL
-
ART
8h 54m
1 stop
$1,006American Airlines
Mon, Apr 13 - Wed, Apr 15
American Airlines Logo
6:00 am - 12:48 pm
ART
-
STL
7h 48m
1 stop
American Airlines Logo
12:27 pm - 11:23 pm
STL
-
ART
9h 56m
2 stops
$1,030American Airlines
Mon, Apr 13 - Thu, Apr 16
American Airlines Logo
6:00 am - 4:41 pm
ART
-
STL
11h 41m
2 stops
American Airlines Logo
12:27 pm - 11:23 pm
STL
-
ART
9h 56m
2 stops
$1,035American Airlines
Mon, Apr 13 - Thu, Apr 16
American Airlines Logo
6:00 am - 12:48 pm
ART
-
STL
7h 48m
1 stop
American Airlines Logo
6:29 am - 11:23 pm
STL
-
ART
15h 54m
1 stop
$1,042American Airlines
Mon, Apr 13 - Thu, Apr 16
American Airlines Logo
6:00 am - 12:48 pm
ART
-
STL
7h 48m
1 stop
American Airlines Logo
1:29 pm - 11:23 pm
STL
-
ART
8h 54m
1 stop
$1,049American Airlines
Mon, Apr 13 - Thu, Apr 16

American Airlines flights from Watertown, New York to St. Louis

Our best American Airlines deals on Watertown, New York to St. Louis flight tickets
American Airlines
Apr 13
ART6:00 amWatertown
7h 48m
1 stop
STL12:48 pmLambert-St Louis
Apr 15
STL12:55 pmLambert-St Louis
9h 28m
2 stops
ART11:23 pmWatertown
$886
American Airlines
Apr 13
ART6:00 amWatertown
11h 41m
2 stops
STL4:41 pmLambert-St Louis
Apr 15
STL12:55 pmLambert-St Louis
9h 28m
2 stops
ART11:23 pmWatertown
$891
American Airlines
Apr 13
ART6:00 amWatertown
7h 48m
1 stop
STL12:48 pmLambert-St Louis
Apr 15
STL6:29 amLambert-St Louis
15h 54m
1 stop
ART11:23 pmWatertown
$993

momondo Fare Finder

 
Customize your flight search to find flights from Watertown, New York 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, momondo users made 832,500 searches. Data last updated March 3, 2026.
Use the filters below to find and compare flights from Watertown, New York to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

WatertownSt. Louis

ART - STL

ARTSTL

Watertown

Mon 4/13

6:00 am-12:48 pm

1 stop7h 48m

Lambert-St Louis

Wed 4/15

12:55 pm-11:23 pm

2 stops9h 28m

$886

WatertownSt. Louis

ART - STL

ARTSTL

Watertown

Mon 4/13

6:00 am-4:41 pm

2 stops11h 41m

Lambert-St Louis

Wed 4/15

12:55 pm-11:23 pm

2 stops9h 28m

$891

WatertownSt. Louis

ART - STL

ARTSTL

Watertown

Mon 4/13

6:00 am-12:48 pm

1 stop7h 48m

Lambert-St Louis

Wed 4/15

6:29 am-11:23 pm

1 stop15h 54m

$993

WatertownSt. Louis

ART - STL

ARTSTL

Watertown

Mon 4/13

6:00 am-12:48 pm

1 stop7h 48m

Lambert-St Louis

Wed 4/15

1:29 pm-11:23 pm

1 stop8h 54m

$1,006

WatertownSt. Louis

ART - STL

ARTSTL

Watertown

Mon 4/13

6:00 am-12:48 pm

1 stop7h 48m

Lambert-St Louis

Thu 4/16

12:27 pm-11:23 pm

2 stops9h 56m

$1,030

WatertownSt. Louis

ART - STL

ARTSTL

Watertown

Mon 4/13

6:00 am-4:41 pm

2 stops11h 41m

Lambert-St Louis

Thu 4/16

12:27 pm-11:23 pm

2 stops9h 56m

$1,035

WatertownSt. Louis

ART - STL

ARTSTL

Watertown

Mon 4/13

6:00 am-12:48 pm

1 stop7h 48m

Lambert-St Louis

Thu 4/16

6:29 am-11:23 pm

1 stop15h 54m

$1,042

WatertownSt. Louis

ART - STL

ARTSTL

Watertown

Mon 4/13

6:00 am-12:48 pm

1 stop7h 48m

Lambert-St Louis

Thu 4/16

1:29 pm-11:23 pm

1 stop8h 54m

$1,049

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

How to get the cheapest flight ticket from Watertown, New York to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What airlines fly to St. Louis?

Delta, American Airlines and United Airlines are the top three most popular airlines that fly to St. Louis from Watertown, New York according to our data. Delta is the first choice among our users, with 57% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 3 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

When to book flights from Watertown, New York to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Watertown, New York to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Watertown, New York to St. Louis (ART to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Watertown, New York to St. Louis

Fastest flight time

7h 48m

Direct flights

None
The fastest flight from Watertown, New York to St. Louis takes 7h 48m
There are no direct flights from Watertown, New York to St. Louis. There are no popular flight routes from Watertown, New York to St. Louis.
Search flight deals

  • How far is Watertown to Lambert-St Louis by plane?

    Lambert-St Louis is 826.4 mi away from Watertown. 7h 48m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Watertown Airport to Lambert-St Louis Airport?

    Prices for flights from Watertown Airport to Lambert-St Louis Airport are updated daily.

  • How old do you have to be to fly from Watertown Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Watertown Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
St. Peters
Wentzville
Collinsville
Alton
Fenton
Farmington
Edwardsville
Festus
Clayton
Eureka
Litchfield
Glencoe
Grafton

Why use momondo?

Why should I use momondo to find a flight deal from Watertown to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Watertown to St. Louis for you.

Can I find flights from Watertown to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from Watertown with this policy.

How can momondo help me find flights from Watertown to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Watertown. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Watertown to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Watertown are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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