Find flights
Deals
Airlines
Travel Guide

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 20/5. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
26 Apr — 3 May1
1 adult
1 adult, Economy, 0 bags

Flights to Dulles Intl in 2026

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 27 March 2026.

Mon 20/49:25 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Thu 30/411:40 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 22/3C$ 279
Sat 25/411:30 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Sun 3/54:05 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 27/3C$ 281
Sat 25/411:30 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Mon 27/411:40 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 26/3C$ 282
Mon 27/49:25 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Thu 28/54:05 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 23/3C$ 284
Fri 24/43:45 p.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Sun 26/46:00 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 25/3C$ 285
Thu 7/59:15 a.m.
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Mon 11/511:30 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 26/3C$ 286
Sat 25/411:30 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Sun 10/511:30 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 26/3C$ 288
Sat 9/59:15 a.m.
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Sat 16/511:30 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 25/3C$ 289
Sat 30/59:15 a.m.
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Sat 6/611:30 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 22/3C$ 291
Wed 29/49:25 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Fri 29/511:30 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 25/3C$ 293
Sat 25/411:30 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Sat 2/511:30 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 26/3C$ 295
Sat 9/56:55 p.m.
YYZ
-
IAD
Nonstop1h 34m
Air Canada
Sat 16/53:45 p.m.
IAD
-
YYZ
1 stop6h 13m
Air Canada
Deal found 25/3C$ 314

Find flight deals to Dulles Intl Airport

Find the latest flights to Dulles Intl in 2026, 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 27 March 2026.

Round-trip from

C$ 279

One-way from

C$ 177

Popular in

March

Cheapest in

October

Average price

C$ 443

Good round-trip deal

C$ 303 or less

Good one-way deal

C$ 203 or less
Porter Airlines
  • Porter Airlines
  • 20/4-30/4
  • Nonstop
  • 2h 59m total
  • Toronto to Washington, D.C.
Search Deals
Porter Airlines
  • Porter Airlines
  • 20/5
  • Nonstop
  • 1h 31m 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$ 10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 27 March 2026.
Use the filters below to find and compare flights to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 29/4

9:25 a.m.-10:54 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Thu 7/5

11:30 a.m.-1:00 p.m.

Nonstop1h 30m

C$ 281

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 14/4

9:25 a.m.-10:54 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Tue 21/4

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

Nonstop1h 30m

C$ 285

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 30/5

9:15 a.m.-10:46 a.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sat 6/6

11:30 a.m.-1:00 p.m.

Nonstop1h 30m

C$ 291

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 30/4

9:25 a.m.-10:54 a.m.

Nonstop1h 29m

Washington, D.C. Dulles Intl

Fri 1/5

11:30 a.m.-1:00 p.m.

Nonstop1h 30m

C$ 309

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 3/5

1:50 p.m.-3:21 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Tue 5/5

11:30 a.m.-1:00 p.m.

Nonstop1h 30m

C$ 309

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Mon 27/7

1:45 p.m.-3:16 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Wed 29/7

4:00 p.m.-5:30 p.m.

Nonstop1h 30m

C$ 328

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 22/5

9:15 a.m.-10:46 a.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Mon 25/5

4:05 p.m.-5:35 p.m.

Nonstop1h 30m

C$ 332

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 11/6

7:30 a.m.-11:28 a.m.

1 stop3h 58m

Washington, D.C. Dulles Intl

Tue 16/6

10:14 p.m.-11:54 p.m.

Nonstop1h 40m

C$ 342

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 6/5

1:50 p.m.-3:21 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Fri 8/5

11:30 a.m.-1:00 p.m.

Nonstop1h 30m

C$ 343

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 1/5

9:15 a.m.-10:46 a.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Mon 4/5

11:30 a.m.-1:00 p.m.

Nonstop1h 30m

C$ 343

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/3

Showing 1-10 of 41 resultsSorted by cheapest first
1
2
3
...
5

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 13 March 2026.

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 29 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 23 March 2026.

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

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$ 149
Porter Airlines
Porter Airlines
From C$ 212
United Airlines
United Airlines
From C$ 157
WestJet
WestJet
From C$ 137

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 27 March 2026.
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
428 reviews
Check prices

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
428 reviews
Porter Airlines
8.0
Very good
428 reviews
Check prices

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Transat
7.7
Good
527 reviews
Porter Airlines
8.0
Very good
428 reviews
Check prices

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
United Airlines
7.4
Good
9,500 reviews
Porter Airlines
8.0
Very good
428 reviews
Check prices

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Canada
7.1
Good
10,853 reviews
Porter Airlines
8.0
Very good
428 reviews
Check prices

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

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, WestJet 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$ 109, while round-trip flights cost around C$ 69.

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

    A round-trip flight to Dulles Intl will typically cost around C$ 75, however they can be found for as little as C$ 69.

  • 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 29 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
Arlington
Herndon
Manassas
Fredericksburg
Alexandria
Rockville

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.

Search flights to Dulles Intl by cabin class

Find flights to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Premium Economy Class
Economy Class

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights to Dulles Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Dulles Intl today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights to Dulles Intl by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

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.

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

Of course! You can track prices for flights 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 to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.