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C$ 177+ Cheap flights to Dulles Intl

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
3 Jan — 10 Jan1
1 adult
1 adult, Economy, 0 bags

Flights to Dulles Intl in 2025

Enter your travel dates to find the best prices.

Cheapest flights to Dulles Intl Airport
Explore the most affordable flight options available to Dulles Intl Airport. Find the lowest fares based on data from user searches, with prices last updated on 4 December 2025.

Tue 30/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Mon 5/16:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 2/12C$ 274
Thu 18/123:45 p.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Mon 29/126:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 2/12C$ 289
Fri 19/123:45 p.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Fri 2/16:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 3/12C$ 290
Fri 19/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Wed 31/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 1/12C$ 292
Thu 18/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 21/126:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 4/12C$ 294
Tue 23/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Tue 30/126:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 2/12C$ 297
Fri 26/123:45 p.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Thu 8/111:35 a.m.IAD - YTZ
Nonstop1h 34mPorter Airlines
Deal found 4/12C$ 299
Wed 24/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Wed 31/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 2/12C$ 300
Mon 22/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Wed 31/1211:40 a.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 2/12C$ 301
Sat 20/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Thu 25/122:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 4/12C$ 303
Wed 17/128:55 a.m.YTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 21/126:30 p.m.IAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 3/12C$ 304
Thu 25/124:10 p.m.YYZ - IAD
1 stop5h 15mAir Canada
Wed 31/125:10 p.m.IAD - YYZ
1 stop4h 35mAir Canada
Deal found 4/12C$ 308

Find flight deals to Dulles Intl Airport

Find the latest flights to Dulles Intl in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 629,999 searches and data was last updated on 4 December 2025.

Round-trip from

C$ 275

One-way from

C$ 177

Popular in

June

Cheapest in

October

Average price

C$ 366

Good round-trip deal

C$ 275 or less

Good one-way deal

C$ 175 or less
Air Canada
  • Air Canada
  • 18/3-22/3
  • 1 total stop
  • 5h 40m total
  • Toronto to Washington, D.C.
Search Deals
Porter Airlines
  • Porter Airlines
  • 9/1
  • Nonstop
  • 1h 29m total
  • Toronto to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 9 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 to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Toronto to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
Locate flights to Dulles Intl that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 629,999 searches and data was last updated on 4 December 2025.
Use the filters below to find and compare flights to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Toronto

Route

Depart

Return

Price

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Mon 19/1

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

Nonstop1h 29m

Washington, D.C. Dulles Intl

Mon 26/1

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

Nonstop1h 34m

C$ 280

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 18/2

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

Nonstop1h 32m

Washington, D.C. Dulles Intl

Thu 19/2

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

Nonstop1h 30m

C$ 283

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 20/2

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

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 22/2

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

Nonstop1h 30m

C$ 283

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 19/2

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

Nonstop1h 32m

Washington, D.C. Dulles Intl

Fri 20/2

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

Nonstop1h 30m

C$ 283

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 20/3

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

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sun 22/3

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

Nonstop1h 30m

C$ 294

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 20/12

8:55 a.m.-10:24 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Thu 25/12

2:30 p.m.-4:00 p.m.

Nonstop1h 30m

C$ 303

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sun 18/1

10:00 a.m.-11:48 a.m.

Nonstop1h 48m

Washington, D.C. Dulles Intl

Mon 19/1

12:35 p.m.-2:14 p.m.

Nonstop1h 39m

C$ 304

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 31/12

8:55 a.m.-10:24 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Mon 5/1

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

Nonstop1h 34m

C$ 306

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 23/12

8:55 a.m.-10:24 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Mon 29/12

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

Nonstop1h 30m

C$ 313

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sun 18/1

6:00 a.m.-11:49 a.m.

1 stop5h 49m

Washington, D.C. Dulles Intl

Sun 25/1

6:00 a.m.-11:20 a.m.

1 stop5h 20m

C$ 314

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 42 results
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Best time to book a flight to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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 to Washington, D.C. Dulles Intl Airport

When is the best time to book a flight to Dulles Intl?

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 28 November 2025.

To ensure you get the cheapest price possible for a flight to Dulles Intl, 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.

How long is the flight to Dulles Intl?

On average, a flight from Toronto to Dulles Intl takes 1 hour 21 minutes. Flights to Dulles Intl from other popular cities in Canada will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to Dulles Intl?

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.

Users looking for the lowest fares to Dulles Intl should consider flying on Tuesday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday afternoons, when prices are usually at their highest.

Weekly flight availability to Dulles Intl

The most flights from Toronto to Dulles Intl are scheduled on a Monday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

What are the most popular airlines that fly to Dulles Intl?

The most popular airlines flying from Toronto to Dulles Intl are Air Canada, Porter Airlines and United Airlines.

Air Canada
Air Canada
From C$ 272
Porter Airlines
Porter Airlines
From C$ 214
United Airlines
United Airlines
From C$ 264
WestJet
WestJet
From C$ 234

What are the cheapest airlines that fly to Dulles Intl?

The cheapest airlines flying from Toronto to Dulles Intl are Air Transat, Porter Airlines and United Airlines.

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 Dulles Intl 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 Dulles Intl 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 Dulles Intl, 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 4 December 2025.
Check out reviews from past customers who have flown Porter Airlines,Air Transat, andUnited Airlines to the United States to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
395 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Food

7.6

Comfort

8.0

Crew

8.6

Overall

8.0

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
395 reviews
Porter Airlines
8.0
Very good
395 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Food

7.6

Comfort

8.0

Crew

8.6

Overall

8.0

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
480 reviews
Porter Airlines
8.0
Very good
395 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Food

7.6

Comfort

8.0

Crew

8.6

Overall

8.0

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
9,066 reviews
Porter Airlines
8.0
Very good
395 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Food

7.6

Comfort

8.0

Crew

8.6

Overall

8.0

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
10,500 reviews
Porter Airlines
8.0
Very good
395 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Food

7.6

Comfort

8.0

Crew

8.6

Overall

8.0

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

FAQs about flying to Dulles Intl

Washington Dulles International Airport (IAD) handles close to 24 million passengers each year. This architecturally beautiful airport is situated 26 miles (42km) from downtown Washington DC and serves a metropolitan area that includes Washington, Baltimore and Northern Virginia.

Washington Dulles International Airport was named after John Foster Dulles who was a former US Secretary of State. The airport is well-connected to Washington and Virginia, and is also connected to more than 125 destinations around the world, making it a popular gateway to the eastern United States.

The airport has a range of shopping options including book shops, fashion, jewellery, gifts, gadgets and music. The duty-free shops at the Washington Dulles International Airport are well-stocked and the amenities are top-class.

The airport serves as a hub for United Airlines, however passengers can book flights to Washington Dulles International Airport on most major international and domestic airlines.

  • Can I find cheaper flights to Dulles Intl if I am willing to have layovers?

    Yes, flights with layovers are often cheaper than direct flights. Keep an eye out for flight deals to Dulles Intl on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Dulles Intl?

    Based on reviews from Cheapflights users, American Airlines is rated the highest out of the airlines that fly to Dulles Intl.

  • What is the cheapest airport to fly to in Dulles Intl?

    Washington, D.C. Dulles Intl is currently the cheapest airport to fly to in Dulles Intl. One-way flights to Washington, D.C. Dulles Intl typically cost C$ 41, while round-trip flights cost around C$ 239.

  • How much is a round-trip flight to Dulles Intl?

    A round-trip flight to Dulles Intl will typically cost around C$ 1,510, however they can be found for as little as C$ 239.

  • Where does the fastest flight to Dulles Intl depart from?

    For those looking to save time traveling to Dulles Intl, Toronto offers the quickest one-way flight (1 hour 17 minutes).

  • Does Washington, D.C. Dulles Intl have rental cars?

    Yes. Those touching down at Washington, D.C. Dulles Intl can take advantage of the rental car services offered upon their arrival.

  • Are there hotels close to Washington, D.C. Dulles Intl?

    Yes. Washington, D.C. Dulles Intl has hotels nearby for those requiring accommodations. Sleepbox Lounge Iad, Dulles International Airport is the closest property to Washington, D.C. Dulles Intl (0.0 km away from Washington, D.C. Dulles Intl).

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
Herndon
Arlington
Manassas
Fredericksburg
Alexandria
Rockville

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Certainly. Search results for flights to Dulles Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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