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C$ 153+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
16 Apr — 23 Apr1
1 adult

Flights to Dulles Intl in 2025

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 11 April 2025.

Round-trip from

C$ 247

One-way from

C$ 153

Popular in

August

Cheapest in

March

Average price

C$ 326

Good round-trip deal

C$ 255 or less

Good one-way deal

C$ 148 or less
Porter Airlines
  • Porter Airlines
  • 4/6-9/6
  • Nonstop
  • 3h 04m total
  • Toronto to Washington, D.C.
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Porter Airlines
  • Porter Airlines
  • 9/5
  • Nonstop
  • 1h 31m total
  • Toronto to Washington, D.C.
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Highest demand for flights based on searches. 2% potential increase in price (C$ 10 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease (C$ 5 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Toronto to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Toronto to Washington, D.C. Dulles Intl.
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Find flight deals to Dulles Intl Airport

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 11 April 2025.

Wed 4/61:35 p.m.YTZ - IAD
Nonstop1h 31mPorter Airlines
Mon 9/611:35 a.m.IAD - YTZ
Nonstop1h 33mPorter Airlines
Deal found 10/4C$ 247
Wed 7/512:45 p.m.YYZ - IAD
Nonstop1h 34mAir Canada
Tue 13/53:27 p.m.IAD - YYZ
Nonstop1h 42mAir Canada
Deal found 10/4C$ 249
Wed 7/58:25 a.m.YTZ - IAD
1 stop4h 49mAir Canada
Tue 13/53:18 p.m.IAD - YTZ
1 stop6h 17mAir Canada
Deal found 10/4C$ 254
Sat 3/54:45 p.m.YYZ - IAD
1 stop4h 27mUnited Airlines
Sun 4/58:25 a.m.IAD - YYZ
Nonstop1h 39mUnited Airlines
Deal found 10/4C$ 256
Wed 7/51:35 p.m.YTZ - IAD
Nonstop1h 31mMultiple Airlines
Tue 13/54:20 p.m.IAD - YTZ
Nonstop1h 33mMultiple Airlines
Deal found 9/4C$ 268
Thu 29/53:50 p.m.YYZ - IAD
1 stop7h 04mDelta
Tue 3/69:40 a.m.IAD - YYZ
1 stop7h 35mDelta
Deal found 9/4C$ 298
Sun 25/52:30 p.m.YYZ - IAD
Nonstop1h 40mLufthansa
Sun 1/65:31 p.m.IAD - YYZ
1 stop5h 43mLufthansa
Deal found 10/4C$ 299
Sat 21/61:35 p.m.YTZ - IAD
Nonstop1h 31mAPG Airlines
Wed 25/64:20 p.m.IAD - YTZ
Nonstop1h 33mAPG Airlines
Deal found 10/4C$ 322
Thu 1/51:35 p.m.YTZ - IAD
Nonstop1h 31mAir Transat
Sun 4/511:35 a.m.IAD - YTZ
Nonstop1h 33mAir Transat
Deal found 10/4C$ 329
Sat 17/56:30 a.m.YYZ - IAD
1 stop5h 36mWestJet
Wed 21/59:40 a.m.IAD - YYZ
1 stop5h 20mWestJet
Deal found 10/4C$ 359
Fri 20/68:10 a.m.YYZ - IAD
Nonstop1h 27mMultiple Airlines
Mon 23/610:15 a.m.IAD - YYZ
Nonstop1h 36mMultiple Airlines
Deal found 10/4C$ 382
Thu 1/56:00 a.m.YYZ - IAD
1 stop7h 02mFrontier
Sun 4/55:26 p.m.IAD - YYZ
2 stops22h 12mFrontier
Deal found 10/4C$ 494

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 11 April 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

Wed 4/6

1:35 p.m.-3:06 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Mon 9/6

11:35 a.m.-1:08 p.m.

Nonstop1h 33m

C$ 247

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 7/5

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

Nonstop1h 34m

Washington, D.C. Dulles Intl

Tue 13/5

12:40 p.m.-2:19 p.m.

Nonstop1h 39m

C$ 249

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 7/5

8:25 a.m.-1:14 p.m.

1 stop4h 49m

Washington, D.C. Dulles Intl

Tue 13/5

3:18 p.m.-9:35 p.m.

1 stop6h 17m

C$ 254

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 5/8

4:40 p.m.-11:15 a.m.

1 stop18h 35m

Washington, D.C. Dulles Intl

Wed 6/8

2:25 p.m.-4:01 p.m.

Nonstop1h 36m

C$ 258

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 7/5

1:35 p.m.-3:06 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Tue 13/5

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

Nonstop1h 33m

C$ 268

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 29/5

3:50 p.m.-10:54 p.m.

1 stop7h 04m

Washington, D.C. Dulles Intl

Tue 3/6

9:40 a.m.-5:15 p.m.

1 stop7h 35m

C$ 298

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sun 25/5

2:30 p.m.-4:10 p.m.

Nonstop1h 40m

Washington, D.C. Dulles Intl

Sun 1/6

5:31 p.m.-11:14 p.m.

1 stop5h 43m

C$ 299

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 21/6

1:35 p.m.-3:06 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Wed 25/6

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

Nonstop1h 33m

C$ 322

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 1/5

1:35 p.m.-3:06 p.m.

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 4/5

11:35 a.m.-1:08 p.m.

Nonstop1h 33m

C$ 329

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 16/5

6:05 p.m.-10:54 p.m.

1 stop4h 49m

Washington, D.C. Dulles Intl

Wed 28/5

9:40 a.m.-5:15 p.m.

1 stop7h 35m

C$ 355

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/4

Showing 1-10 of 25 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 4 April 2025.

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

How long is the flight to Dulles Intl?

On average, a flight from Toronto to Dulles Intl takes 1 hour 27 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 afternoons, 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 Wednesday (25 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (19 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$ 198

Porter Airlines

Porter Airlines

From C$ 164

United Airlines

United Airlines

From C$ 197

WestJet

WestJet

From C$ 337

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 11 April 2025.
See what other customers who have flown with Porter Airlines, Delta and Air Transat to Washington, D.C. have to say. 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
280 reviews
Check prices

Crew

8.7

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Food

7.6

Overall

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
Porter Airlines
8.0
Very good
280 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Crew

8.7

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Food

7.6

Overall

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
Delta
8.0
Very good
7,911 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Crew

8.7

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Food

7.6

Overall

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
Air Transat
7.8
Good
385 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Crew

8.7

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Food

7.6

Overall

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
SWISS
7.5
Good
1,575 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Crew

8.7

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Food

7.6

Overall

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
United Airlines
7.4
Good
8,636 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Crew

8.7

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Food

7.6

Overall

8.0

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

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 Transat 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$ 83, while round-trip flights cost around C$ 89.

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

    A round-trip flight to Dulles Intl will typically cost around C$ 67, however they can be found for as little as C$ 63.

  • 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
Herndon
Warrenton
Arlington
Hanover
Fairfax
Bel Air
Chantilly
Winchester
Falls Church
Alexandria
Manassas
Fredericksburg
Rockville

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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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