How do I get Price Alerts for flights from Waterloo, Iowa to St. Louis?

Search flight deals from Waterloo, Iowa to St. Louis . While viewing offers you’ll have the option to create a Price Alert.

How can I save money on flights from Waterloo, Iowa to St. Louis with momondo?

By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

How does momondo find its flight prices?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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

Prices for flights from Waterloo Airport to Lambert-St Louis Airport were last updated today.

How old do you have to be to fly from Waterloo 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 Waterloo 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.

$339 Cheap Flights from Waterloo to St. Louis in 2025/26

1 adult

0 bags

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Find the cheapest flights from Waterloo, Iowa to St. Louis

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:51 pm - 5:57 pmALO-STL

3h 06m1 stop

7:50 am - 2:27 pmSTL-ALO

6h 37m1 stop

$339American Airlines

Find Deal

Sat, Apr 4 - Wed, Apr 8

2:51 pm - 10:24 pmALO-STL

7h 33m2 stops

7:50 am - 2:27 pmSTL-ALO

6h 37m1 stop

$344American Airlines

Find Deal

Sat, Apr 4 - Wed, Apr 8

6:00 am - 4:09 pmALO-STL

10h 09m2 stops

5:29 am - 2:27 pmSTL-ALO

8h 58m2 stops

$439American Airlines

Find Deal

Sat, Apr 4 - Wed, Apr 8

3:28 pm - 7:27 pmALO-STL

3h 59m1 stop

7:20 pm - 11:48 pmSTL-ALO

4h 28m1 stop

$782American Airlines

Find Deal

Mon, Nov 17 - Fri, Nov 21

American Airlines flights from Waterloo, Iowa to St. Louis

Our best American Airlines deals on Waterloo, Iowa to St. Louis flight tickets

American Airlines

Apr 4

ALO2:51 pmWaterloo

3h 06m

1 stop

STL5:57 pmLambert-St Louis

Apr 8

STL7:50 amLambert-St Louis

6h 37m

1 stop

ALO2:27 pmWaterloo

$339

Find similar

American Airlines

Apr 4

ALO2:51 pmWaterloo

7h 33m

2 stops

STL10:24 pmLambert-St Louis

Apr 8

STL7:50 amLambert-St Louis

6h 37m

1 stop

ALO2:27 pmWaterloo

$344

Find similar

American Airlines

Apr 4

ALO6:00 amWaterloo

10h 09m

2 stops

STL4:09 pmLambert-St Louis

Apr 8

STL5:29 amLambert-St Louis

8h 58m

2 stops

ALO2:27 pmWaterloo

$439

Find similar

Fly from

Fly to

Route

Depart

Return

Price

WaterlooSt. Louis

ALO - STL

ALOSTL

Waterloo

Sat 4/4

2:51 pm-5:57 pm

1 stop3h 06m

Lambert-St Louis

Wed 4/8

7:50 am-2:27 pm

1 stop6h 37m

$339

WaterlooSt. Louis

ALO - STL

ALOSTL

Waterloo

Sat 4/4

2:51 pm-10:24 pm

2 stops7h 33m

Lambert-St Louis

Wed 4/8

7:50 am-2:27 pm

1 stop6h 37m

$344

WaterlooSt. Louis

ALO - STL

ALOSTL

Waterloo

Sat 4/4

6:00 am-4:09 pm

2 stops10h 09m

Lambert-St Louis

Wed 4/8

5:29 am-2:27 pm

2 stops8h 58m

$439

WaterlooSt. Louis

ALO - STL

ALOSTL

Waterloo

Mon 11/17

3:28 pm-7:27 pm

1 stop3h 59m

Lambert-St Louis

Fri 11/21

7:20 pm-11:48 pm

1 stop4h 28m

$782

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Waterloo, Iowa to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Waterloo, Iowa to St. Louis according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Waterloo, Iowa to St. Louis (ALO to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Waterloo, Iowa to St. Louis

Direct flights	None

There are no direct flights from Waterloo, Iowa to St. Louis. There are no popular flight routes from Waterloo, Iowa to St. Louis.

Search flight deals

How far is Waterloo to Lambert-St Louis by plane?
The distance between Waterloo and Lambert-St Louis is about 289.6 mi. By plane, this route typically takes 3h 06m.
When did momondo last update prices for flights from Waterloo Airport to Lambert-St Louis Airport?
Prices for flights from Waterloo Airport to Lambert-St Louis Airport were last updated today.
How old do you have to be to fly from Waterloo 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 Waterloo 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.

How do I get Price Alerts for flights from Waterloo, Iowa to St. Louis?
Search flight deals from Waterloo, Iowa to St. Louis. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from Waterloo, Iowa to St. Louis with momondo?
By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.
How does momondo find its flight prices?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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Why use momondo?

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

Finding the right flight to St. Louis from Waterloo is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to St. Louis from Waterloo which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Waterloo to St. Louis.

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

Price alerts on flights to St. Louis from Waterloo 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.