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$339+ Cheap flights from Waterloo, IA (ALO) to Missouri

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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
ALO — STL
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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Cheap flight deals from Waterloo to Missouri

Keep the following information in mind while searching for Waterloo to Missouri flight deals. Data was last updated November 2, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$339
(American Airlines)
Provider with most accurate pricing for Waterloo-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Waterloo-Lambert-St Louis flights.
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From Waterloo to Missouri
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Find flight deals from Waterloo to Missouri

Cheapest flights from Waterloo to Missouri
Explore the most affordable flight options available from Waterloo to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 2, 2025.

This American Airlines deal was found by Cheapflights users on 11/2. 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.
Mon 11/173:28 pmALO - STL
1 stop3h 59mAmerican Airlines
Fri 11/217:20 pmSTL - ALO
1 stop4h 28mAmerican Airlines
Deal found 11/2$782

Cheapflights Fare Finder

 
Customize your flight search to find flights from Waterloo to Missouri 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 2,558,603 searches. Data last updated November 2, 2025.
Use the filters below to find and compare flights from Waterloo to Missouri that are best for you.

Fly from

Waterloo

Fly to

Missouri

Route

Depart

Return

Price

WaterlooSt. Louis

ALO - STL

ALOSTL

Waterloo

Sat 4/4

6:00 am-9:22 am

1 stop3h 22m

Lambert-St Louis

Wed 4/8

11:14 am-2:27 pm

1 stop3h 13m

$339

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.

Deals found on 10/31

Best time to book a flight from Waterloo to Missouri

Have a flexible travel schedule? Discover the best time to fly to Missouri from Waterloo with our price prediction graph.
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.

Cheapflights Insights

Everything you need to know about your flight from Waterloo to Missouri

What is the cheapest month to book a flight from Waterloo, Iowa to Missouri?

Currently, October is the cheapest month in which you can book a flight from Waterloo, Iowa to Missouri (average of $93). Flying from Waterloo, Iowa to Missouri in December is currently the most expensive (average of $233). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Waterloo to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Waterloo to Missouri?

    Located just 5.3 mi from the city center, Waterloo (ALO) is the airport most travelers will use when flying to Missouri from Waterloo.

  • How long is the flight from Waterloo, Iowa to Missouri?

    Departing from Waterloo, Iowa to Missouri will take you 3h 22m. Airlines will cover a distance of 283 mi.

  • Can I find deals for flights from Waterloo to Missouri that include hotel bookings?

    Yes. In addition to deals on Waterloo to Missouri flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Waterloo to Missouri?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Waterloo to Missouri.

  • Can I find deals for business class flights from Waterloo to Missouri?

    Yes. Cheapflights offers flight deals from Waterloo to Missouri by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Waterloo, Iowa to Missouri?

    Currently, October is the cheapest month in which you can book a flight from Waterloo, Iowa to Missouri (average of $93). Flying from Waterloo, Iowa to Missouri in December is currently the most expensive (average of $233). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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