How much does it cost to fly round-trip from Toronto to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment. Toronto to Washington, D.C. Dulles Intl Airport flights typically cost between $196 and $371 in September. The cheapest round-trip price found within the last 3 days was $185 on Porter Airlines (Sep 18-Sep 21).

How long is the flight from Toronto to Washington, D.C. Dulles Intl Airport?

Departing from Toronto to Washington, D.C. Dulles Intl Airport will take you 1h 28m. The distance between Toronto and Washington, D.C. Dulles Intl Airport is about 346 mi. All flights are typically nonstop.

What are the cheapest airlines flying from Toronto to Washington, D.C. Dulles Intl Airport round-trip?

Currently priced at $171, Air Canada will fly you from Toronto to Washington, D.C. Dulles Intl Airport and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Porter Airlines and United Airlines - these airlines can fly you to your destination from $174 and $184, respectively. Air Canada is 33% cheaper than the average price of flights available within the next 90 days to this destination.

How far ahead should I book a flight from Toronto to Washington, D.C. Dulles Intl Airport?

To ensure you get the cheapest price possible for a flight from Toronto to Washington, D.C. Dulles Intl Airport, you should look to book at least 41 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Toronto to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Toronto to Washington, D.C. Dulles Intl Airport (average of $300). Flying from Toronto to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

What is the cheapest day to fly from Toronto to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Toronto to Washington, D.C. Dulles Intl Airport flight should consider departing on Sunday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Toronto to Washington, D.C. Dulles Intl Airport

The most flights from YTO to IAD are scheduled on a Thursday (22 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 on average).

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the cheapest flights from Toronto to Washington, D.C. Dulles Intl Airport?

While on average a flight from Toronto to Washington, D.C. Dulles Intl Airport is generally $488, our data shows the cheapest flight currently is $136. When looking at the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), you can expect to pay $212 for that flight.

What are the most reliable airlines from Toronto to Washington, D.C. Dulles Intl Airport?

No one likes to see their flight delayed. When booking a flight from Toronto to Washington, D.C. Dulles Intl Airport consider choosing Republic Airways (79%), Air Canada (75%) or Copa Airlines (74%) as they are the most reliable in getting you off to your destination on time.

What is the cheapest day to fly round-trip from Toronto to Washington, D.C. Dulles Intl Airport?

Flights from Toronto to Washington, D.C. Dulles Intl Airport are found to be more expensive on Sunday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C. Dulles Intl Airport.

How far in advance should I book a flight from Toronto to Washington, D.C. Dulles Intl Airport?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 39 days in advance, which can save you up to 119% on flights from Toronto to Washington, D.C. Dulles Intl Airport compared to booking the week you need them. Waiting 39 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $291. For sooner than that we have options available in the next 3 days from $478.

What is the cheapest month to fly from Toronto to Washington, D.C. Dulles Intl Airport?

April can be a great time to fly to Washington, D.C. Dulles Intl Airport from Toronto with a flight ticket averaging about $253. Cheapflights users have found deals in the month of April for as cheap as $149. The most expensive prices can be found in the month of June.

What is the cheapest time of day to fly from YTO to IAD?

A simple way to save on the total cost of your ticket is to fly from Toronto to Washington, D.C. Dulles Intl Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 40% on your trip compared to booking a flight in the evening.

Can I find deals for flights from Toronto to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Toronto to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Toronto to Dulles Intl?

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

Can I find deals for business class flights from Toronto to Dulles Intl?

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

$118+ Flights from Toronto to Washington, D.C. Dulles Intl Airport

Round-trip from	$185 (SmartFares)
One-way from	$118 (SmartFares)
Popular in	October
Cheapest in	July
Average price	$234
Good round-trip deal	$199 or less
Good one-way deal	$137 or less

Economy Plus provides extra legroom and priority boarding, enhancing comfort and convenience.

United Club access includes healthy snacks and comfortable seating, ideal for business travelers.

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$171	Average$282	FlexibilityNo cancel fee	On-time67%
Porter Airlines	Cheapest$174	Average$282	FlexibilityNo cancel fee	On-time52%
United Airlines	Cheapest$184	Average$300	FlexibilityNo cancel fee	On-time69%

$118+ Cheap flights from Toronto (YTO) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Toronto to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Toronto to Washington, D.C. Dulles Intl are usually found in July or June, booked 41 days in advance, depart on a Wednesday or Thursday and return on a Friday

Cheap flight deals from Toronto to Dulles Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Toronto to Dulles Intl

Cheapest flights from Toronto to Dulles IntlExplore the most affordable flight options available from Toronto to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 28, 2025.

Explore the most affordable flight options available from Toronto to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 28, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Toronto to Washington, D.C. Dulles Intl Airport that are best for you.

The best insider tips for Toronto to Washington, D.C. Dulles Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Toronto to Washington, D.C. Dulles Intl Airport trip

Airlines

United Airlines

Air Canada

Airports

YYZ

YTZ

IAD

Our travel experts

Best time to book a flight from Toronto to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Toronto with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Toronto to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Toronto to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Toronto to Dulles Intl. Price data was last updated on August 22, 2025.

What is the cheapest month to book a flight from Toronto to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to fly from YTO to IAD?

Find hourly flight availability from Toronto to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 28, 2025.

What is the cheapest day to fly from Toronto to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Toronto to Dulles Intl. Price data was last updated on December 16, 2024.

Weekly flight availability from Toronto to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Toronto to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 28, 2025.

How much does it cost to fly round-trip from Toronto to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Get a feel of what it's like to fly with Porter Airlines and Air Canada from Toronto to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How long is the flight from Toronto to Washington, D.C. Dulles Intl Airport?

What are the cheapest airlines flying from Toronto to Washington, D.C. Dulles Intl Airport round-trip?

What are the most reliable airlines from Toronto to Washington, D.C. Dulles Intl Airport?

What are the cheapest flights from Toronto to Washington, D.C. Dulles Intl Airport?

Can I find deals for flights from Toronto to Dulles Intl that include hotel bookings?

How can I find direct flights from Toronto to Dulles Intl?

Can I find deals for business class flights from Toronto to Dulles Intl?

What is the cheapest month to book a flight from Toronto to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Toronto to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Toronto to Dulles Intl

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Toronto to Dulles Intl
Explore the most affordable flight options available from Toronto to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 28, 2025.