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

Currently priced at $172, Porter Airlines will fly you from Toronto to Washington, D.C. Dulles Intl Airport and back. In addition to Porter Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Air Canada - these airlines can fly you to your destination from $178 and $183, respectively. Porter Airlines 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?

For one-way options, check prices for Porter Airlines. According to our data, you can fly for as low as $108. Users have also found prices from $109 and $131 on Air Canada and Air Transat, respectively.

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 $312, our data shows the cheapest flight currently is $135. When looking at the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), you can expect to pay $178 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 ANA (93%), Avianca (89%) or Republic Airways (84%) 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.

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 $255. 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 August.

Most accurate provider : When it comes to deals on Toronto-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Toronto-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Toronto-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Toronto-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Toronto-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$108+ Flights from Toronto to Washington, D.C. Dulles Intl Airport

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Find cheap flights from Toronto to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Toronto to Washington, D.C. Dulles Intl are usually found in January or April, booked 73 days in advance, depart on a Saturday or Thursday and return on a Friday

Cheap flight deals from Toronto to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$172 (SmartFares)
One-way from	$108 (Kiwi.com)
Popular in	October
Cheapest in	January
Average price	$273
Good round-trip deal	$176 or less
Good one-way deal	$123 or less

Provider with most accurate pricing for Toronto (YTO)-Washington, D.C. Dulles Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Toronto (YTO)-Washington, D.C. Dulles Intl flights.

Search Deals

From Toronto (YTO) to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Toronto (YTO) to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($28 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 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.

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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 mayo 28, 2025.

vie. 7/118:45 amYTZ - IAD

Nonstop1h 31mPorter Airlines

mar. 7/154:10 pmIAD - YTZ

Nonstop1h 33mPorter Airlines

Deal found 5/28

$172

mar. 10/76:35 pmYYZ - IAD

1 stop5h 46mUnited Airlines

mié. 10/88:16 amIAD - YYZ

1 stop4h 47mUnited Airlines

Deal found 5/27

$178

lun. 6/238:45 amYTZ - IAD

Nonstop1h 31mAir Transat

mié. 6/254:20 pmIAD - YTZ

Nonstop1h 33mAir Transat

Deal found 5/27

$183

mar. 6/1712:45 pmYYZ - IAD

Nonstop1h 34mAir Canada

mar. 6/248:18 amIAD - YYZ

1 stop4h 46mAir Canada

Deal found 5/27

$183

jue. 6/191:35 pmYTZ - IAD

Nonstop1h 31mMultiple Airlines

dom. 6/2211:35 amIAD - YTZ

Nonstop1h 33mMultiple Airlines

Deal found 5/26

$193

mié. 9/103:59 pmYYZ - IAD

1 stop7h 01mDelta

mié. 9/249:30 amIAD - YYZ

1 stop7h 53mDelta

Deal found 5/28

$212

jue. 7/310:20 amYTZ - IAD

1 stop6h 00mAir Canada

mar. 7/89:45 amIAD - YTZ

1 stop7h 01mAir Canada

Deal found 5/27

$220

mar. 7/14:00 pmYYZ - IAD

1 stop5h 04mMultiple Airlines

lun. 7/2810:25 amIAD - YYZ

Nonstop1h 36mMultiple Airlines

Deal found 5/27

$233

jue. 6/1912:45 pmYYZ - IAD

Nonstop1h 34mLufthansa

dom. 6/225:12 pmIAD - YYZ

Nonstop1h 53mLufthansa

Deal found 5/27

$297

jue. 6/126:04 amYYZ - IAD

1 stop5h 55mWestJet

vie. 6/136:00 amIAD - YYZ

1 stop11h 06mWestJet

Deal found 5/27

$314

Best flights from Toronto to Dulles Intl
Discover carefully curated flight deals from Toronto to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated mayo 28, 2025.

mié. 6/251:35 pmYTZ - IAD

Nonstop1h 31mPorter Airlines

sáb. 6/284:20 pmIAD - YTZ

Nonstop1h 33mPorter Airlines

Deal found 5/28

$172

mar. 10/76:35 pmYYZ - IAD

1 stop5h 46mUnited Airlines

mié. 10/88:16 amIAD - YYZ

1 stop4h 47mUnited Airlines

Deal found 5/27

$178

mar. 6/1712:45 pmYYZ - IAD

Nonstop1h 34mAir Canada

mar. 6/248:18 amIAD - YYZ

1 stop4h 46mAir Canada

Deal found 5/27

$183

jue. 6/198:45 amYTZ - IAD

Nonstop1h 31mAir Transat

dom. 6/224:20 pmIAD - YTZ

Nonstop1h 33mAir Transat

Deal found 5/27

$190

jue. 6/191:35 pmYTZ - IAD

Nonstop1h 31mMultiple Airlines

dom. 6/2211:35 amIAD - YTZ

Nonstop1h 33mMultiple Airlines

Deal found 5/26

$193

mié. 9/103:59 pmYYZ - IAD

1 stop7h 01mDelta

mié. 9/249:30 amIAD - YYZ

1 stop7h 53mDelta

Deal found 5/28

$212

jue. 6/1912:45 pmYYZ - IAD

Nonstop1h 34mLufthansa

dom. 6/225:12 pmIAD - YYZ

Nonstop1h 53mLufthansa

Deal found 5/27

$297

jue. 6/126:04 amYYZ - IAD

1 stop5h 55mWestJet

vie. 6/136:00 amIAD - YYZ

1 stop11h 06mWestJet

Deal found 5/27

$314

jue. 7/310:20 amYTZ - IAD

1 stop6h 00mAir Canada

mar. 7/89:45 amIAD - YTZ

1 stop7h 01mAir Canada

Deal found 5/27

$220

mar. 7/14:00 pmYYZ - IAD

1 stop5h 04mMultiple Airlines

lun. 7/2810:25 amIAD - YYZ

Nonstop1h 36mMultiple Airlines

Deal found 5/27

$233

Last-minute flights from Toronto to Dulles Intl
Discover last-minute flight deals from Toronto to Dulles Intl. Data last updated mayo 28, 2025 and is based on user searches.

mar. 6/36:15 amYYZ - IAD

1 stop14h 52mUnited Airlines

mié. 6/48:18 amIAD - YYZ

1 stop4h 42mUnited Airlines

Deal found 5/27

$293

mar. 6/34:20 pmYTZ - IAD

1 stop4h 44mAir Canada

dom. 6/81:00 pmIAD - YTZ

1 stop5h 37mAir Canada

Deal found 5/27

$350

mar. 6/36:30 amYYZ - IAD

1 stop5h 36mWestJet

mié. 6/116:00 amIAD - YYZ

1 stop3h 21mWestJet

Deal found 5/27

$515

jue. 6/512:00 pmYTZ - IAD

3 stops26h 23mMultiple Airlines

dom. 6/811:35 amIAD - YTZ

Nonstop1h 33mMultiple Airlines

Deal found 5/28

$423

jue. 6/57:55 amYYZ - IAD

3 stops17h 20mAvianca

lun. 6/92:35 amIAD - YYZ

3 stops21h 54mAvianca

Deal found 5/28

$761

vie. 6/61:35 pmYTZ - IAD

Nonstop1h 31mPorter Airlines

dom. 6/811:35 amIAD - YTZ

Nonstop1h 33mPorter Airlines

Deal found 5/27

$257

vie. 6/612:45 pmYYZ - IAD

2 stops11h 14mAmerican Airlines

lun. 6/91:08 pmIAD - YYZ

2 stops9h 56mAmerican Airlines

Deal found 5/28

$763

sáb. 6/71:35 pmYTZ - IAD

Nonstop1h 31mAir Transat

lun. 6/911:35 amIAD - YTZ

Nonstop1h 33mAir Transat

Deal found 5/27

$278

sáb. 6/78:10 amYYZ - IAD

Nonstop1h 31mAir Canada

mar. 6/1010:20 amIAD - YYZ

Nonstop1h 34mAir Canada

Deal found 5/28

$294

sáb. 6/76:05 pmYYZ - IAD

1 stop4h 49mDelta

mar. 6/106:00 amIAD - YYZ

1 stop3h 21mDelta

Deal found 5/28

$299

sáb. 6/78:10 amYYZ - IAD

Nonstop1h 31mMultiple Airlines

lun. 6/910:20 amIAD - YYZ

Nonstop1h 34mMultiple Airlines

Deal found 5/27

$386

mar. 6/106:30 amYYZ - IAD

1 stop5h 03mDelta

mar. 6/176:00 amIAD - YYZ

1 stop3h 21mDelta

Deal found 5/27

$222

One-way flights from Toronto to Dulles Intl
Search for one-way flight options from Toronto to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated mayo 28, 2025.

mar. 6/241:35 pmYTZ - IAD

Nonstop1h 31mPorter Airlines

Deal found 5/26

$108

mar. 6/2412:15 pmYYZ - IAD

Nonstop1h 27mAir Canada

Deal found 5/27

$109

sáb. 6/214:20 pmYTZ - IAD

1 stop4h 44mAir Canada

Deal found 5/27

$113

mié. 7/21:25 pmYTZ - IAD

Nonstop1h 31mAir Transat

Deal found 5/27

$131

mié. 6/116:05 pmYYZ - IAD

1 stop4h 50mDelta

Deal found 5/28

$144

mar. 6/104:00 pmYYZ - IAD

1 stop5h 04mUnited Airlines

Deal found 5/27

$146

dom. 6/156:15 amYYZ - IAD

1 stop5h 39mWestJet

Deal found 5/27

$171

jue. 6/126:55 amYYZ - IAD

2 stops9h 30mPorter Airlines

Deal found 5/27

$202

vie. 7/1111:00 amYYZ - IAD

2 stops13h 12mMultiple Airlines

Deal found 5/27

$217

jue. 6/1212:00 pmYTZ - IAD

3 stops26h 23mMultiple Airlines

Deal found 5/27

$219

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.

Fly from

Fly to

Route

Depart

Return

Price

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

vie. 7/11

8:45 am-10:16 am

Nonstop1h 31m

Washington, D.C. Dulles Intl

mar. 7/15

4:10 pm-5:43 pm

Nonstop1h 33m

$172

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

mar. 10/7

6:35 pm-12:21 am

1 stop5h 46m

Washington, D.C. Dulles Intl

mié. 10/8

8:16 am-1:03 pm

1 stop4h 47m

$178

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

mar. 6/17

12:45 pm-2:19 pm

Nonstop1h 34m

Washington, D.C. Dulles Intl

mar. 6/24

8:18 am-1:04 pm

1 stop4h 46m

$183

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

jue. 6/19

8:45 am-10:16 am

Nonstop1h 31m

Washington, D.C. Dulles Intl

dom. 6/22

4:20 pm-5:53 pm

Nonstop1h 33m

$190

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

jue. 6/19

1:35 pm-3:06 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

dom. 6/22

11:35 am-1:08 pm

Nonstop1h 33m

$193

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

vie. 7/4

4:10 pm-9:04 pm

1 stop4h 54m

Washington, D.C. Dulles Intl

mar. 7/8

9:45 am-2:46 pm

1 stop5h 01m

$213

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

mar. 6/10

6:30 am-11:33 am

1 stop5h 03m

Washington, D.C. Dulles Intl

mar. 6/17

6:00 am-9:21 am

1 stop3h 21m

$222

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

mar. 9/16

4:00 pm-9:12 pm

1 stop5h 12m

Washington, D.C. Dulles Intl

sáb. 9/20

9:45 am-3:34 pm

1 stop5h 49m

$226

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

jue. 6/19

12:45 pm-2:19 pm

Nonstop1h 34m

Washington, D.C. Dulles Intl

dom. 6/22

5:12 pm-7:05 pm

Nonstop1h 53m

$297

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

jue. 6/12

6:04 am-11:59 am

1 stop5h 55m

Washington, D.C. Dulles Intl

vie. 6/13

6:00 am-5:06 pm

1 stop11h 06m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/26

Showing 1-10 of 21 results

Compare providers for flights from Toronto to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Toronto to Dulles Intl in May.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Toronto-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Toronto-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Toronto-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Toronto-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Toronto-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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.

Read more about United Airlinesby Harriet Baskas

Air Canada

Economy Latitude offers priority check-in and two checked bags, ideal for efficient travel.

Preferred Seats offer up to four inches extra space, perfect for added comfort on short flights.

Read more about Air Canadaby Jessica Macdonald

Airports

YYZ

Security lines at YYZ are efficient, moving quickly even during peak times. Arrive early to clear US customs before boarding.

YTZ

YTZ offers fast security with rarely long lines. Arrive with time to spare but expect a quick process.

IAD

From IAD, the Silver Line Metro reaches downtown in under 40 minutes, offering a cheap and convenient travel option.

Our travel experts

Harriet Baskas

Expert on United Airlines

Jessica Macdonald

Expert on Air Canada

Kaitlyn McInnis

Expert on YYZ and YTZ

Ramsey Qubein

Expert on IAD

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?

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 73 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 $309). Flying from Toronto to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $358). 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?

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 45% 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?

Travelers seeking maximum savings on their Toronto to Washington, D.C. Dulles Intl Airport flight should consider departing on Thursday 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 (25 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (20 on average).

Rainfall in Dulles Intl by month

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.

Temperature in Dulles Intl 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 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).

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Porter Airlines, Delta and Air Transat from Toronto to Washington, D.C.. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

286 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Porter Airlines

8.0

Very good

286 reviews

Porter Airlines

8.0

Very good

286 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Delta

8.0

Very good

7,957 reviews

Porter Airlines

8.0

Very good

286 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Air Transat

7.8

Good

388 reviews

Porter Airlines

8.0

Very good

286 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

United Airlines

7.4

Good

8,756 reviews

Porter Airlines

8.0

Very good

286 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

WestJet

7.2

Good

2,860 reviews

Porter Airlines

8.0

Very good

286 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Related info for your journey

What are the cheapest airlines flying from Toronto to Washington, D.C. Dulles Intl Airport round-trip?
Currently priced at $172, Porter Airlines will fly you from Toronto to Washington, D.C. Dulles Intl Airport and back. In addition to Porter Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Air Canada - these airlines can fly you to your destination from $178 and $183, respectively. Porter Airlines 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?
For one-way options, check prices for Porter Airlines. According to our data, you can fly for as low as $108. Users have also found prices from $109 and $131 on Air Canada and Air Transat, respectively.
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 ANA (93%), Avianca (89%) or Republic Airways (84%) as they are the most reliable in getting you off to your destination on time.
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 $312, our data shows the cheapest flight currently is $135. When looking at the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), you can expect to pay $178 for that flight.
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, August is the cheapest month in which you can book a flight from Toronto to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Toronto to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $358). 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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Tysons

Silver Spring

Fairfax

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Gaithersburg

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Laurel

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National Harbor

Reston

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Toronto to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Porter Airlines	Cheapest$174	Average$269	FlexibilityNo cancel fee	On-time52%
Air Canada	Cheapest$182	Average$284	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$214	Average$285	FlexibilityNo cancel fee	On-time69%

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$108+ 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 6/24. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Toronto to Washington, D.C. Dulles Intl are usually found in January or April, booked 73 days in advance, depart on a Saturday or Thursday and return on a Friday

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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 mayo 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 mayo 28, 2025.

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

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Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Toronto to Dulles Intl in May.

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

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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.

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 May 23, 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 mayo 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 mayo 28, 2025.

Rainfall in Dulles Intl by month

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

Temperature in Dulles Intl by month

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

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Porter Airlines, Delta and Air Transat from Toronto to Washington, D.C.. In addition to providing an overall rating, 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.

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

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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?

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Alternative routes for Toronto to Dulles Intl

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Top 3 airlines flying from Toronto to Dulles Intl

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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 mayo 28, 2025.