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Cheap flights from Toronto to Washington, D.C. Dulles Intl Airport from C$ 175

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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — IAD
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Toronto to Washington, D.C. Dulles Intl are usually found in July or June, booked 35 days in advance, depart on a Friday or Thursday and return on a Monday

Cheap flight deals from Toronto to Dulles Intl

Enter your travel dates to find the best prices.

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 18 December 2025.

Thu 25/126:55 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Tue 20/14:30 p.m.IAD - YYZ
Nonstop1h 33mAir Canada
Deal found 16/12C$ 398
Wed 31/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 4/16:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 16/12C$ 402
Thu 25/126:55 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Thu 29/14:30 p.m.IAD - YYZ
Nonstop1h 33mAir Canada
Deal found 16/12C$ 427
Thu 25/126:55 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Mon 29/125:10 p.m.IAD - YYZ
1 stop4h 35mAir Canada
Deal found 15/12C$ 431
Sat 27/126:55 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Wed 31/125:10 p.m.IAD - YYZ
1 stop4h 35mAir Canada
Deal found 17/12C$ 456
Tue 30/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Wed 31/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 15/12C$ 457
Mon 29/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Wed 31/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 16/12C$ 464
Wed 31/126:40 p.m.YYZ - IAD
1 stop4h 26mUnited Airlines
Fri 2/15:16 p.m.IAD - YYZ
Nonstop1h 41mUnited Airlines
Deal found 17/12C$ 485
Tue 30/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 4/16:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 16/12C$ 488
Sun 28/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Wed 31/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 16/12C$ 489
Wed 31/126:40 p.m.YYZ - IAD
1 stop4h 26mUnited Airlines
Sat 3/110:06 p.m.IAD - YYZ
Nonstop1h 40mUnited Airlines
Deal found 17/12C$ 495
Wed 24/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Wed 14/111:35 a.m.IAD - YTZ
Nonstop1h 34mPorter Airlines
Deal found 17/12C$ 497

Find flight deals from Toronto to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Toronto (YTO) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 December 2025.

Round-trip from

C$ 274

One-way from

C$ 175

Popular in

November

Cheapest in

July

Average price

C$ 382

Good round-trip deal

C$ 267 or less

Good one-way deal

C$ 163 or less
Porter Airlines
  • Porter Airlines
  • 1/2-28/2
  • Nonstop
  • 3h 02m total
  • Toronto to Washington, D.C.
Search Deals
Air Transat
  • Air Transat
  • 14/1
  • Nonstop
  • 1h 29m total
  • Toronto to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 81 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Toronto (YTO) to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Toronto (YTO) to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Toronto to Dulles Intl 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 629,999 searches. Data last updated 18 December 2025.
Use the filters below to find and compare flights from Toronto to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Toronto

Fly to

Dulles Intl

Route

Depart

Return

Price

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 16/1

8:50 a.m.-10:19 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Fri 23/1

11:35 a.m.-1:09 p.m.

Nonstop1h 34m

C$ 278

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 1/2

8:50 a.m.-10:22 a.m.

Nonstop1h 32m

Washington, D.C. Dulles Intl

Sat 28/2

1:50 p.m.-3:20 p.m.

Nonstop1h 30m

C$ 278

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 10/4

3:45 p.m.-5:14 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 12/4

6:30 p.m.-8:00 p.m.

Nonstop1h 30m

C$ 282

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 6/2

2:45 p.m.-4:30 p.m.

Nonstop1h 45m

Washington, D.C. Dulles Intl

Mon 9/2

5:16 p.m.-6:57 p.m.

Nonstop1h 41m

C$ 288

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 15/1

2:15 p.m.-3:46 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 18/1

9:00 a.m.-10:29 a.m.

Nonstop1h 29m

C$ 289

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 13/2

8:50 a.m.-10:22 a.m.

Nonstop1h 32m

Washington, D.C. Dulles Intl

Sun 22/2

6:30 p.m.-8:00 p.m.

Nonstop1h 30m

C$ 289

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 23/4

3:45 p.m.-5:14 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Tue 28/4

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

C$ 291

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 8/1

8:50 a.m.-10:19 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Mon 9/3

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

C$ 293

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 14/3

11:00 a.m.-12:29 p.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Wed 18/3

6:30 p.m.-8:00 p.m.

Nonstop1h 30m

C$ 295

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 15/1

8:50 a.m.-10:19 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Thu 22/1

11:35 a.m.-1:09 p.m.

Nonstop1h 34m

C$ 300

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/12

Showing 1-10 of 44 results
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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.
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 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 12 December 2025.

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 35 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, February is the cheapest month in which you can book a flight from Toronto to Washington, D.C. Dulles Intl Airport (average of C$ 180). Flying from Toronto to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of C$ 277). 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 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 18 December 2025.

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 morning. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight in the afternoon.

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 16 December 2024.

Travelers seeking maximum savings on their Toronto to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Saturday 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

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 18 December 2025.

The most flights from YTO to IAD are scheduled on a Monday (19 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (8 on average).

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

What’s the top layover airport for flights from Toronto to Washington, D.C. Dulles Intl Airport?

Share of one-stop round-trip flights from Toronto to Washington, D.C. Dulles Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

Detroit (DTW) – chosen by Cheapflights users on 56% of one-stop itineraries from Toronto to Washington, D.C. Dulles Intl Airport on Cheapflights.

What’s the cheapest layover airport for flights from Toronto to Washington, D.C. Dulles Intl Airport?

Average round-trip fare for 1-stop flights from Toronto to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Montreal (YUL) is the most affordable 1-stop option, with an average round-trip price of C$ 358.

What’s the fastest layover option from Toronto to Washington, D.C. Dulles Intl Airport?

Shortest average travel time for 1-stop one-way flights from Toronto to Washington, D.C. Dulles Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Ottawa (YOW) have the shortest average one-way travel time for 1-stop routes: 3h 52m.

Which airport typically offers the quickest layover for flights from Toronto to Washington, D.C. Dulles Intl Airport?

Average layover duration for 1-stop one-way flights from Toronto to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Ottawa (YOW) offer the fastest connection on this route, with an average layover time of 1h 11m.

How often are flights from Toronto to Washington, D.C. delayed?

About 13% of weekly flights between Toronto and Washington, D.C. have experienced delays in the past year, with the average delay time being 117 minutes.

What is the most punctual flight time for Toronto to Washington, D.C. flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Toronto to Washington, D.C. flights?

Over the past year, United Airlines has had the lowest number of delays on this route, with just 10% of flights being delayed.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated 18 December 2025.
See what other customers who have flown with Porter Airlines,Air Transat, andUnited Airlines from Toronto to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
399 reviews
Check prices

Food

7.6

Entertainment

7.0

Comfort

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
8.0
Very good
399 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Food

7.6

Entertainment

7.0

Comfort

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Transat
7.8
Good
483 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Food

7.6

Entertainment

7.0

Comfort

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
United Airlines
7.4
Good
9,093 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Food

7.6

Entertainment

7.0

Comfort

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,534 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Food

7.6

Entertainment

7.0

Comfort

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

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?

    Airlines like Porter Airlines, United Airlines, and Air Canada fly from Toronto to Washington, D.C. Dulles Intl Airport in about 1h 29m. The time it takes to get you to your destination is usually consistent. The distance from Toronto to Washington, D.C. Dulles Intl Airport is about 546 km. All flights are typically direct.

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

    Air Transat, at C$ 209, was found to be the cheapest airline from Toronto to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include Porter Airlines and Air Canada. Air Transat is 36% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Toronto to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airlines for a one-way flight from Toronto to Washington, D.C. Dulles Intl Airport are Porter Airlines (C$ 134), Air Transat (C$ 145), and Air Canada (C$ 179).

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

    Before booking your flight to Washington, D.C. Dulles Intl Airport from Toronto, check out the most reliable airlines to get you to your destination on time: United Airlines (80%), Jazz (75%), Air Canada( 75%).

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

    On average you can expect to pay C$ 857 for a flight from Toronto to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is C$ 200 while the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl) is currently priced at C$ 288.

  • 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.

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

    Currently, February is the cheapest month in which you can book a flight from Toronto to Washington, D.C. Dulles Intl Airport (average of C$ 180). Flying from Toronto to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of C$ 277). 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.

See more FAQs

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

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Silver Spring
Warrenton
Winchester
Hanover
Fairfax
Reston
Ellicott City
Oxon Hill
Gaithersburg
Arlington
Herndon
Manassas
Fredericksburg
Alexandria
Rockville

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Fly from Toronto to Dulles Intl on these airlines

Choose from the following airlines for your flight from Toronto to Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on 18 December 2025.
Porter Airlines flights from Toronto to Washington, D.C. Dulles Intl
Air Canada flights from Toronto to Washington, D.C. Dulles Intl
United Airlines flights from Toronto to Washington, D.C. Dulles Intl

Top 5 airlines flying from Toronto to Dulles Intl

Discover the top 5 airlines that operate flights from Toronto to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 18 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapestC$ 209AverageC$ 410FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Porter AirlinesCheapestC$ 211AverageC$ 287FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 260AverageC$ 404FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 270AverageC$ 405FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 411AverageC$ 606FlexibilityNo cancel feeOn-time60%
Search WestJet flights

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How does Cheapflights help users find flights from Toronto to Dulles Intl?

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Why should you use Cheapflights to find cheap flight tickets from Toronto to Dulles Intl?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dulles Intl from Toronto.

Can Cheapflights find flights from Toronto to Dulles Intl with no change fees?

Yes, we can. To see specific flights from Toronto to Dulles Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Toronto to Dulles Intl become cheaper?

Of course! You can now track prices for flights from Toronto to Dulles Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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