Title: Cheap Flights from Washington (IAD) to Waterloo (ALO) - Expedia.ca ![One of the many lakes within George Wyth State Park, popular for boating and fishing.](https://images.trvl-media.com/place/364/8258d304-b1bb-4d11-b5a8-393ce803cda8.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Erik Rowley ![](https://images.trvl-media.com/place/364/8258d304-b1bb-4d11-b5a8-393ce803cda8.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Washington (IAD) to Waterloo (ALO) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Washington Dulles International Airport (IAD) to Waterloo, IA (ALO-Waterloo Regional) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:iad,to:alo,departure:25/10/2025TANYT&leg2=from:alo,to:iad,departure:01/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) Flight from Washington to Waterloo (IAD - ALO) route information | Origin airport | Washington Dulles Intl. | | --- | --- | | Destination airport | Waterloo Regional | | Distance | 1311 km | ## Chantilly to Waterloo Flights **The easy way to book your flights from Washington to Waterloo**  With Expedia, it’s simple to find and book flights to Waterloo from Washington whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Waterloo Regional, too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Washington to Waterloo today, tomorrow, or this week.   **Save dollars with cheap flights from Washington Dulles Intl., IAD to Waterloo Regional, ALO**  Sort your search results by price to find great deals on your flight from Washington to Waterloo—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Waterloo from Washington currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Waterloo   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Waterloo from Washington**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Waterloo with Expedia today. ## Frequently asked questions ### How much is a flight from Washington Dulles Intl. Airport (IAD) to Waterloo Regional Airport (ALO)? > If you're planning on travelling between Washington Dulles Intl. Airport (IAD) and Waterloo Regional Airport, round-trip journeys start from . This figure is based on airfares available within the last 7 days on Expedia for flights departing within the next year, so don't let a good deal slip through your fingers. Book now and save yourself both money and time. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from IAD to Waterloo Regional Airport (ALO)? > This can differ from airline to airline, as each has its own terms and conditions. Visit the [Customer Service Portal](https://www.expedia.ca/helpcenter), where you'll find easy instructions on how to cancel online. ### How do I find cheap flights from IAD to ALO that have flexible change policies? > Use our "No change fees" filter to find flexible travel options for your flight from Dulles Intl. Airport to Waterloo Regional Airport. This allows you to secure a good price in advance and still have the freedom to make changes without any additional fees. If the new flight costs more, you'll just cover the difference. ### How far is the flight from Washington Dulles Intl. Airport (IAD) to ALO? > The flight distance from IAD (IAD) to Waterloo Regional Airport (ALO) (ALO) is just 1,300 kilometres. You'll be disembarking the plane and collecting your bags from the carousel in next to no time. ### Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to ALO? > If you want to travel straight from IAD to Waterloo Regional Airport (ALO), you'll need to book a flight with at least one stop. Unfortunately, there are no airlines that fly directly between these airports. ### Are IAD to ALO flight tickets cheaper when they're purchased at the last minute? > Booking your trip from Washington Dulles Intl. Airport (IAD) to Waterloo Regional Airport (ALO) at the last minute could be your ticket to a fantastic deal. However, it could end up costing a good deal more! If you'd rather play it safe, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to 12 months in advance. 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