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C$ 188+ 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 28/7. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
17 Aug — 24 Aug1
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 18 July 2026.

Fri 7/81:40 p.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Mon 10/811:25 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 17/7C$ 292
Tue 18/81:40 p.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Tue 25/83:50 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 17/7C$ 293
Fri 7/89:15 a.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Fri 14/83:50 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 17/7C$ 295
Fri 28/89:15 a.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Mon 31/83:50 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 16/7C$ 296
Thu 13/810:30 a.m.
YYZ
-
IAD
1 stop4h 31m
Air Canada
Tue 18/84:20 p.m.
IAD
-
YYZ
Nonstop1h 30m
Air Canada
Deal found 13/7C$ 296
Tue 1/99:15 a.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Tue 8/93:50 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 17/7C$ 297
Wed 5/81:40 p.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Tue 11/811:25 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 17/7C$ 299
Thu 13/89:15 a.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Tue 18/83:50 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 14/7C$ 300
Thu 30/71:55 p.m.
YYZ
-
IAD
Nonstop1h 29m
Air Canada
Sun 2/84:20 p.m.
IAD
-
YYZ
Nonstop1h 30m
Air Canada
Deal found 13/7C$ 300
Fri 7/89:15 a.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Thu 13/83:50 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 16/7C$ 302
Wed 5/81:40 p.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Tue 18/811:25 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 17/7C$ 303
Tue 4/81:40 p.m.
YTZ
-
IAD
Nonstop1h 30m
Porter Airlines
Thu 6/83:50 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 13/7C$ 304

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 18 July 2026.

Round-trip from

C$ 292

One-way from

C$ 188

Popular in

March

Cheapest in

October

Average price

C$ 402

Good round-trip deal

C$ 311 or less

Good one-way deal

C$ 224 or less
Air Canada
  • Air Canada
  • 31/7-4/8
  • 1 total stop
  • 6h 26m total
  • Toronto to Washington, D.C.
Search Deals
Porter Airlines
  • Porter Airlines
  • 28/7
  • Nonstop
  • 1h 31m total
  • Toronto to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 49 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 July 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 18 July 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

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 20/8

1:40 p.m.-3:10 p.m.

Nonstop1h 30m

Washington, D.C. Dulles Intl

Mon 24/8

11:25 a.m.-12:55 p.m.

Nonstop1h 30m

C$ 318

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 29/7

8:55 a.m.-10:25 a.m.

Nonstop1h 30m

Washington, D.C. Dulles Intl

Wed 29/7

3:55 p.m.-5:25 p.m.

Nonstop1h 30m

C$ 353

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Mon 17/8

9:15 a.m.-10:45 a.m.

Nonstop1h 30m

Washington, D.C. Dulles Intl

Tue 25/8

3:50 p.m.-5:20 p.m.

Nonstop1h 30m

C$ 359

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 4/8

9:35 a.m.-11:11 a.m.

Nonstop1h 36m

Washington, D.C. Dulles Intl

Sat 24/10

4:02 p.m.-11:59 p.m.

1 stop7h 57m

C$ 360

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 10/11

6:00 a.m.-11:52 a.m.

1 stop5h 52m

Washington, D.C. Dulles Intl

Sat 14/11

6:10 a.m.-11:29 a.m.

1 stop5h 19m

C$ 363

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 28/8

8:50 a.m.-4:02 p.m.

1 stop7h 12m

Washington, D.C. Dulles Intl

Mon 31/8

4:20 p.m.-5:50 p.m.

Nonstop1h 30m

C$ 369

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 4/8

1:40 p.m.-3:10 p.m.

Nonstop1h 30m

Washington, D.C. Dulles Intl

Mon 26/10

11:20 a.m.-12:52 p.m.

Nonstop1h 32m

C$ 384

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 4/8

1:40 p.m.-3:10 p.m.

Nonstop1h 30m

Washington, D.C. Dulles Intl

Thu 22/10

3:50 p.m.-5:20 p.m.

Nonstop1h 30m

C$ 384

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 18/8

7:00 a.m.-1:55 p.m.

1 stop6h 55m

Washington, D.C. Dulles Intl

Sat 29/8

4:20 p.m.-5:50 p.m.

Nonstop1h 30m

C$ 386
Quickest round-trip

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 5/12

2:50 p.m.-4:22 p.m.

Nonstop1h 32m

Washington, D.C. Dulles Intl

Sun 6/12

4:30 p.m.-5:57 p.m.

Nonstop1h 27m

C$ 391

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 47 resultsSorted by cheapest first
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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

How long is the flight to Dulles Intl?

On average, a flight from Toronto to Dulles Intl takes 1 hour 26 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.

Weekly flight availability to Dulles Intl

The most flights from Toronto to Dulles Intl are scheduled on a Wednesday (25 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$ 127
Porter Airlines
Porter Airlines
From C$ 227
United Airlines
United Airlines
From C$ 159
WestJet
WestJet
From C$ 139

What are the cheapest airlines that fly to Dulles Intl?

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

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).

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

To ensure you get the cheapest price possible for a flight to Dulles Intl, you should look to book at least 34 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.

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 11 July 2026.

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 at noon, when prices are usually at their highest.

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 July 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
445 reviews
Check prices

Entertainment

6.9

Food

7.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Porter Airlines
8.0
Very good
445 reviews
Porter Airlines
8.0
Very good
445 reviews
Check prices

Entertainment

6.9

Food

7.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Air Transat
7.8
Good
565 reviews
Porter Airlines
8.0
Very good
445 reviews
Check prices

Entertainment

6.9

Food

7.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
United Airlines
7.4
Good
10,005 reviews
Porter Airlines
8.0
Very good
445 reviews
Check prices

Entertainment

6.9

Food

7.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Air Canada
7.1
Good
11,352 reviews
Porter Airlines
8.0
Very good
445 reviews
Check prices

Entertainment

6.9

Food

7.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

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, Air Canada 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$ 142, while round-trip flights cost around C$ 178.

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

    A round-trip flight to Dulles Intl will typically cost around C$ 860, however they can be found for as little as C$ 178.

  • 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 25 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
Oxon Hill
Gaithersburg
Reston
Chantilly
Herndon
Ellicott City
Arlington
Fredericksburg
Alexandria
Rockville

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How does Cheapflights help users find flights to Dulles Intl?

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

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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.

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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.

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