$280 Cheap Flights from Denver (DEN) to Waterloo (ALO)

View $280 flight on Wed, Jun 17, 2026Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Waterloo, IA (ALO-Waterloo Regional)

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Cheap Flights from Denver to Waterloo (DEN-ALO)

Prices were available within the past 7 days and start at $280 for one-way flights and $415 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Jun 9 - Tue, Jul 7
DEN
Denver
ALO
Waterloo
$415 Roundtrip, found 3 days ago
$415
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Jun 9 from Denver to Waterloo, returning Tue, Jul 7, priced at $415 found 3 days ago
American Airlines
Tue, Jun 9 - Tue, Jul 7
DEN
Denver
ALO
Waterloo
$425 Roundtrip, found 3 days ago
$425
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Jun 9 from Denver to Waterloo, returning Tue, Jul 7, priced at $425 found 3 days ago
American Airlines
Tue, Jun 9 - Tue, Jul 7
DEN
Denver
ALO
Waterloo
$435 Roundtrip, found 3 days ago
$435
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Jun 9 from Denver to Waterloo, returning Tue, Jul 7, priced at $435 found 3 days ago
American Airlines
Thu, Jul 23 - Mon, Jul 27
DEN
Denver
ALO
Waterloo
$437 Roundtrip, found 3 hours ago
$437
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Thu, Jul 23 from Denver to Waterloo, returning Mon, Jul 27, priced at $437 found 3 hours ago
American Airlines
Tue, Jun 9 - Tue, Jul 7
DEN
Denver
ALO
Waterloo
$444 Roundtrip, found 3 days ago
$444
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Jun 9 from Denver to Waterloo, returning Tue, Jul 7, priced at $444 found 3 days ago
American Airlines
Tue, Jun 9 - Tue, Jul 7
DEN
Denver
ALO
Waterloo
$454 Roundtrip, found 3 days ago
$454
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Jun 9 from Denver to Waterloo, returning Tue, Jul 7, priced at $454 found 3 days ago
American Airlines
Thu, Jul 23 - Mon, Jul 27
DEN
Denver
ALO
Waterloo
$457 Roundtrip, found 17 hours ago
$457
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Thu, Jul 23 from Denver to Waterloo, returning Mon, Jul 27, priced at $457 found 17 hours ago
American Airlines
Wed, Apr 15 - Wed, Apr 22
DEN
Denver
ALO
Waterloo
$461 Roundtrip, found 6 days ago
$461
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Apr 15 from Denver to Waterloo, returning Wed, Apr 22, priced at $461 found 6 days ago
American Airlines
Thu, Jul 23 - Mon, Jul 27
DEN
Denver
ALO
Waterloo
$467 Roundtrip, found 4 days ago
$467
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Jul 23 from Denver to Waterloo, returning Mon, Jul 27, priced at $467 found 4 days ago
American Airlines
Wed, Apr 15 - Wed, Apr 22
DEN
Denver
ALO
Waterloo
$497 Roundtrip, found 6 days ago
$497
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Apr 15 from Denver to Waterloo, returning Wed, Apr 22, priced at $497 found 6 days ago

Frequently asked questions

How much does a flight from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional) cost?
You can find cheap one-way flights from $280 and cheap return flights from $415 Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional) with Expedia. One-way flights usually range from $468 to $992, and return flights typically cost between $298 and $1677. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional)?
The cheapest month to fly from DEN to ALO is June when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional)?
Enter DEN to ALO and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional)?
The earliest flight from Denver International Airport (DEN) to Waterloo Regional Airport (ALO) usually leaves at around 12:30 AM, operated by American Airlines. This early departure allows you to maximize your time in Waterloo. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional)?
The most popular departure times for flights from Denver (DEN) to Waterloo, IA (ALO) are in the early morning, from 6am to 9am. About 47% of passengers choose this time window. American Airlines is a key carrier offering flights during this period. This timing is favored because it helps you make the most of your day in Waterloo.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional)?
A flight from DEN to ALO with a layover takes around 6 hours 30 minutes, with the route covering approximately 664 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional)?
First class seats are offered on the DEN to ALO route with American Airlines.
How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Waterloo from Denver Intl. (DEN)?
From Denver Intl. (DEN), you can fly into Waterloo Regional (ALO) to reach Waterloo. Some flights may connect through major hubs like Charlotte-Douglas Intl. (CLT), Philadelphia Intl. (PHL), Dallas-Fort Worth Intl. (DFW) before reaching Waterloo. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional)?
If you booked your Denver, CO (DEN-Denver Intl.) to Waterloo, IA (ALO-Waterloo Regional) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Denver Intl.
Destination airport
Waterloo Regional
Airlines serving
American Airlines
Roundtrip price
$415
Distance
664 mi

*Flight schedules are subject to change.

*Available to One Key members.

 

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