ALO

$299 Find Cheap Flights to Waterloo - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$421
Typical prices: $398-$587
American Airlines
Sun 1/21Wed 1/24
DEN - ALO • 1 stop
Cheapest one-way
$299
Typical prices: $316-$471
American Airlines
Mon 10/15
DEN - ALO • 1 stop
Nonstop flights
Every day
You can fly direct with American Airlines. Average duration is 1h 26m
FAQs
FAQs
Top airlines
American Airlines
Most flights • 12 per week
American Airlines
Best reviews • 7.1 score
Airline reviews
+1
Airline reviews
+1
Top routes
SEA - ALO
Cheapest • 40% average savings
BOS - ALO
Most popular
Insights
Insights
When to travel
September
Cheapest • 22% price drop
November
Most popular
Good to know
+1
Good to know
+1
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We hope you love your trip to Waterloo!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Waterloo

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

Recent round-trip flight deals to Waterloo

Thu, Jan 21 - Sun, Jan 24
American Airlines Logo
6:15 pm - 3:18 pmDEN  Denver Intl-ALO Waterloo
20h 03m1 stop Chicago O'Hare Intl
American Airlines Logo
3:41 pm - 8:28 amALO  Waterloo-DEN Denver Intl
17h 47m1 stop Chicago O'Hare Intl
$421American Airlines
Fri, Oct 16 - Mon, Oct 19
American Airlines Logo
5:43 am - 3:09 pmPHL  Philadelphia-ALO Waterloo
10h 26m1 stop Chicago O'Hare Intl
American Airlines Logo
6:07 am - 9:07 pmALO  Waterloo-PHL Philadelphia
14h 00m1 stop Chicago O'Hare Intl
$438American Airlines
Thu, Jan 21 - Sun, Jan 24
American Airlines Logo
2:33 pm - 3:18 pmDEN  Denver Intl-ALO Waterloo
23h 45m1 stop Chicago O'Hare Intl
American Airlines Logo
5:00 am - 6:09 pmALO  Waterloo-DEN Denver Intl
14h 09m2 stops Chicago O'Hare Intl Dallas/Fort Worth
$464American Airlines
Tue, Sep 22 - Sat, Sep 26
American Airlines Logo
4:29 pm - 2:55 pmBOS  Boston Logan Intl-ALO Waterloo
23h 26m1 stop Chicago O'Hare Intl
American Airlines Logo
5:00 am - 10:27 pmALO  Waterloo-BOS Boston Logan Intl
16h 27m1 stop Chicago O'Hare Intl
$467American Airlines
Tue, Sep 22 - Sat, Sep 26
American Airlines Logo
7:44 pm - 2:55 pmBOS  Boston Logan Intl-ALO Waterloo
20h 11m2 stops Washington, D.C. Reagan-National Chicago O'Hare Intl
American Airlines Logo
5:00 am - 11:54 pmALO  Waterloo-BOS Boston Logan Intl
17h 54m1 stop Chicago O'Hare Intl
$477American Airlines
Tue, Sep 22 - Sat, Sep 26
American Airlines Logo
7:33 pm - 2:55 pmBOS  Boston Logan Intl-ALO Waterloo
20h 22m2 stops New York LaGuardia Chicago O'Hare Intl
American Airlines Logo
5:00 am - 5:07 pmALO  Waterloo-BOS Boston Logan Intl
11h 07m2 stops Chicago O'Hare Intl Philadelphia
$482American Airlines
Fri, Oct 9 - Tue, Oct 13
American Airlines Logo
5:43 am - 3:09 pmPHL  Philadelphia-ALO Waterloo
10h 26m1 stop Chicago O'Hare Intl
American Airlines Logo
6:07 am - 6:47 pmALO  Waterloo-PHL Philadelphia
11h 40m1 stop Chicago O'Hare Intl
$486American Airlines
Sat, Feb 13 - Wed, Feb 17
American Airlines Logo
10:29 am - 3:18 pmBOS  Boston Logan Intl-ALO Waterloo
5h 49m1 stop Chicago O'Hare Intl
American Airlines Logo
5:00 am - 12:06 pmALO  Waterloo-BOS Boston Logan Intl
6h 06m1 stop Chicago O'Hare Intl
$488American Airlines
Sat, Dec 19 - Wed, Dec 30
American Airlines Logo
6:31 pm - 12:29 amPHL  Philadelphia-ALO Waterloo
6h 58m1 stop Chicago O'Hare Intl
American Airlines Logo
7:04 am - 12:54 pmALO  Waterloo-PHL Philadelphia
4h 50m1 stop Chicago O'Hare Intl
$494American Airlines
Thu, Sep 24 - Mon, Sep 28
American Airlines Logo
6:55 am - 2:55 pmJFK  New York John F Kennedy Intl-ALO Waterloo
9h 00m1 stop Chicago O'Hare Intl
American Airlines Logo
5:00 am - 5:00 pmALO  Waterloo-JFK New York John F Kennedy Intl
11h 00m1 stop Chicago O'Hare Intl
$497American Airlines
Booking Insights

Price, demand and travel trends for United States to Waterloo flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from the United States to Waterloo with more confidence.

What is the cheapest flight to Waterloo?

Denver to Waterloo is the cheapest route at $421 round-trip, found in the past 5 days on KAYAK. Boston to Waterloo is the most popular connection with round-trip deals from $467.

How much is a flight to Waterloo?

A round-trip flight to Waterloo costs $507 on average, based on data over the past 12 months on KAYAK. Round-trip fares from Seattle average $350, while New York runs a bit higher at $359.

What is the cheapest day to fly to Waterloo?

Saturday is the cheapest day to fly to Waterloo at $461 round-trip on average over the past 12 months on KAYAK. Thursday is the most expensive at $563.

What is the cheapest month to fly to Waterloo?

  • September is the cheapest month to fly to Waterloo with an average price of $393 round-trip.
  • June ($634) and July ($614) are the most expensive.
  • Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Waterloo?

Afternoon flights to Waterloo are the cheapest at $465 round-trip on average. Night flights are the most expensive at $558.

What is a good deal for flights to Waterloo?

Flights under $398 are considered a good deal. 25% of KAYAK users found round-trip flights to Waterloo at or below these prices, with the lowest fares from:

  • Orlando $299
  • Tampa $319
  • New York $338
.

Find deals

Key details for flights to Waterloo

Low season

March

Cheapest flight

$299
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Denver to Waterloo

When to book flights to Waterloo

Are your dates flexible? Find out the best times to travel to Waterloo based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your questions about flights to Waterloo, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • What is the difference between the most popular and the most frequent airline at Waterloo?

    American Airlines operates the most flights from the United States to Waterloo at 12 per week, and for this route American Airlines is also the airline most often selected by KAYAK users searching for flights from the United States to Waterloo. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveler choice.

  • How long is a nonstop flight to Waterloo?

    Nonstop flights to Waterloo are available from Chicago, with a flight time of about 1h 21m.

  • Where can I fly from to get the cheapest fares to Waterloo?

    Based on fares booked in the past 5 days, the cheapest flights to Waterloo are from:
    • New York, from $497 round-trip

  • How many flights serve Waterloo?

    Waterloo receives 2 flights per day and 12 per week from across the world. Chicago has the most flights to Waterloo, with 12 weekly flights.

  • How do I know if a flight to Waterloo is a good deal?

    A good deal on a flight to Waterloo is around $398 round-trip. This fare is in the lowest 25% of round-trip prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • Which airlines should I consider for flights to Waterloo?

    American Airlines is the most popular airline with KAYAK users flying to Waterloo, and has the best on-time record at the destination's main airport.

Your guide to booking Waterloo flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For flights to Waterloo, recent KAYAK data shows that stronger deals tend to land around $398 round-trip. If you see a fare below that threshold, it's a strong deal – book before the price climbs back up.
  • If you can choose when to go, time your trip to Waterloo around September. Round-trip fares historically average $393 that month – typically the cheapest month to travel based on the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat-selection costs on budget carriers.
    • Verify whether you need any travel documents beyond ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to noon to save up to $93 per round-trip. Noon flights to Waterloo average $465 compared to $558 for evening flights. See the time-of-day chart above for the full breakdown.
  • Bag allowances vary by airline, fare type, cabin class and route. On flights to Waterloo, some airlines may include bags at no extra cost. For example, American Airlines includes a cabin bag in Economy Class. Always check the fare details before booking, since bag policies can change by ticket type.

Reviews of the top airline flying to Waterloo

 
Need help choosing which airline to fly with to Waterloo? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
American AirlinesOverall score based on 12046 reviews
7.9Crew
7.2Comfort
6.4Food
6.8Entertainment
7.5Boarding
Airline reviews

Sat on tarmac at arrival at DFw for more than 30 min waiting for a gate.

2.0 MediocreAaron, Sep 2026
Read more American Airlines reviews

Sat on tarmac at arrival at DFw for more than 30 min waiting for a gate.

Old dirty plane but great lie flat seats in business class

Business Class layout was excellent. The seats were not nearly as comfortable as UA, Delta or Air New Zealand (the best). Nor were the controls as flexible. Food was okay but not great. Breakfast pancakes were like cardboard.

Communication not good, too many changes. Three flights were cancelled due to weather and the options were not acceptable. I had to cancel my Canada portion of the trip.

On time and stellar premium class service. Not liking non LCD display in seat backs - miss the convenience of not using your own device.

The boarding by groups is pointless. The first two groups worked fine, but almost Noone boarded in goups three thru five leaving the vast majority boarding when group six was called. It defeated the purpose of spreading out the crowd.

I blame kayak for my last trip to dca. Kayak cancelled my direct flight and put on a one stop flight and made lost whole day from my vacation and had not even refunded my ticket.

delayed multiple times. no resolution on anything from AA customer service. was put on hold in chat to talk to manager. was 6th in line to talk to manager for more than TWELVE HOURS - from sometime around 9AM until well after I had gone to bed that evening. no explanation, no attempt to make it right. just a five hour delay because of repeated maintenance claims

Was the most uncomfortable I ever had in the air. Felt like I was trapped in the seat legs cramped and was just horrible. The flight to DSM was a lot better. Even being on a smaller plane was better. Staff are outstanding. No complaints about the people.

It was exactly as I expected, on time, smooth flight, courteous staff.

More options for your flight to Waterloo