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Cheap flights from Toronto to Washington, D.C. Dulles Intl Airport from C$ 170

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 13/4. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — IAD
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from Toronto to Washington, D.C. Dulles Intl are usually found in January or April, booked 47 days in advance, depart on a Friday or Thursday and return on a Monday

Cheap 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 25 March 2025.

Round-trip from

C$ 259

One-way from

C$ 170

Popular in

October

Cheapest in

January

Average price

C$ 400

Good round-trip deal

C$ 270 or less

Good one-way deal

C$ 188 or less
Porter Airlines
  • Porter Airlines
  • 22/5-25/5
  • Nonstop
  • 3h 04m total
  • Toronto to Washington, D.C.
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Air Canada
  • Air Canada
  • 13/4
  • 1 total stop
  • 4h 48m total
  • Toronto to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 52 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 14 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Toronto (YTO) to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Toronto (YTO) to Washington, D.C. Dulles Intl.
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Find flight deals from Toronto to Dulles Intl

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 25 March 2025.

Thu 22/58:45 a.m.YTZ - IAD
Nonstop1h 31mPorter Airlines
Sun 25/54:20 p.m.IAD - YTZ
Nonstop1h 33mPorter Airlines
Deal found 24/3C$ 259
Thu 24/45:05 p.m.YYZ - IAD
1 stop4h 10mAir Canada
Sun 27/44:07 p.m.IAD - YYZ
1 stop4h 36mAir Canada
Deal found 24/3C$ 262
Thu 24/48:25 a.m.YTZ - IAD
1 stop6h 48mMultiple Airlines
Sun 27/42:00 p.m.IAD - YTZ
Nonstop1h 30mMultiple Airlines
Deal found 24/3C$ 269
Tue 22/410:25 a.m.YTZ - IAD
1 stop4h 48mAir Canada
Tue 29/43:55 p.m.IAD - YTZ
1 stop5h 40mAir Canada
Deal found 24/3C$ 272
Wed 7/512:10 p.m.YYZ - IAD
Nonstop1h 31mMultiple Airlines
Fri 9/59:45 a.m.IAD - YYZ
1 stop5h 49mMultiple Airlines
Deal found 24/3C$ 275
Sun 11/58:45 a.m.YTZ - IAD
Nonstop1h 31mAir Transat
Wed 14/54:20 p.m.IAD - YTZ
Nonstop1h 33mAir Transat
Deal found 24/3C$ 287
Mon 14/43:59 p.m.YYZ - IAD
1 stop7h 08mDelta
Sat 19/46:00 a.m.IAD - YYZ
1 stop5h 25mDelta
Deal found 23/3C$ 298
Mon 14/412:45 p.m.YYZ - IAD
Nonstop1h 34mUnited Airlines
Sun 20/410:19 p.m.IAD - YYZ
Nonstop1h 35mUnited Airlines
Deal found 24/3C$ 301
Wed 23/43:59 p.m.YYZ - IAD
1 stop7h 08mWestJet
Tue 29/46:00 a.m.IAD - YYZ
1 stop9h 09mWestJet
Deal found 24/3C$ 357

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 25 March 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

Thu 22/5

8:45 a.m.-10:16 a.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 25/5

4:20 p.m.-5:53 p.m.

Nonstop1h 33m

C$ 259

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 24/4

5:05 p.m.-9:15 p.m.

1 stop4h 10m

Washington, D.C. Dulles Intl

Sun 27/4

4:07 p.m.-8:43 p.m.

1 stop4h 36m

C$ 262

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 24/4

8:25 a.m.-3:13 p.m.

1 stop6h 48m

Washington, D.C. Dulles Intl

Sun 27/4

2:00 p.m.-3:30 p.m.

Nonstop1h 30m

C$ 269

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 22/4

10:25 a.m.-3:13 p.m.

1 stop4h 48m

Washington, D.C. Dulles Intl

Tue 29/4

3:55 p.m.-9:35 p.m.

1 stop5h 40m

C$ 272

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 7/5

12:10 p.m.-1:41 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Fri 9/5

9:45 a.m.-3:34 p.m.

1 stop5h 49m

C$ 275

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 11/5

8:45 a.m.-10:16 a.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Wed 14/5

4:20 p.m.-5:53 p.m.

Nonstop1h 33m

C$ 287

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Mon 14/4

3:59 p.m.-11:07 p.m.

1 stop7h 08m

Washington, D.C. Dulles Intl

Sat 19/4

6:00 a.m.-11:25 a.m.

1 stop5h 25m

C$ 298

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Mon 14/4

12:45 p.m.-2:19 p.m.

Nonstop1h 34m

Washington, D.C. Dulles Intl

Sun 20/4

10:19 p.m.-11:54 p.m.

Nonstop1h 35m

C$ 301

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 23/4

3:59 p.m.-11:07 p.m.

1 stop7h 08m

Washington, D.C. Dulles Intl

Tue 29/4

6:00 a.m.-3:09 p.m.

1 stop9h 09m

C$ 357

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 13/4

10:25 a.m.-3:13 p.m.

1 stop4h 48m

C$ 170

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/3

Showing 1-10 of 20 results
1
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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 21 March 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 47 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$ 256). Flying from Toronto to Washington, D.C. Dulles Intl Airport in October is currently the most expensive (average of C$ 352). 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 25 March 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 afternoon. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight in the evening.

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 Saturday 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

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 25 March 2025.

The most flights from YTO to IAD are scheduled on a Monday (23 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (20 on average).

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 mm per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 25 March 2025.
To help decide which airline to fly from Toronto to Washington, D.C., see what other customers have to say about Delta, Porter Airlines and Air Transat. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,890 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,890 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Porter Airlines
7.9
Good
276 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Transat
7.8
Good
381 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    Porter Airlines, at C$ 259, was found to be the cheapest airline from Toronto to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include Air Canada and Air Transat. Porter Airlines is 34% 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 Air Canada (C$ 170), Air Transat (C$ 172), and Porter Airlines (C$ 185).

  • 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: Avianca (81%), Copa Airlines (81%), ANA( 81%).

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

    On average you can expect to pay C$ 1,357 for a flight from Toronto to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is C$ 189 while the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl) is currently priced at C$ 294.

  • 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$ 256). Flying from Toronto to Washington, D.C. Dulles Intl Airport in October is currently the most expensive (average of C$ 352). 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

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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 25 March 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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 235AverageC$ 340FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 297AverageC$ 574FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air TransatCheapestC$ 310AverageC$ 408FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
United AirlinesCheapestC$ 342AverageC$ 468FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 495AverageC$ 592FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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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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