How does KAYAK find such low prices on flights from Ontario to Washington Dulles Airport?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Washington Dulles Airport.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Washington Dulles Airport?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Ontario to Washington Dulles Airport?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to Ontario with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Washington Dulles Airport?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$119 CHEAP FLIGHTS from Ontario to Washington Dulles (IAD)

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Flight Deals

Cheap Flights from Ontario to Dulles Intl

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Ontario to Dulles Intl

Tue, Dec 8 - Wed, Dec 9

3:20 pm - 4:47 pmYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 27mnonstop

5:20 pm - 6:57 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 37mnonstop

$179Air Canada

Mon, Dec 7 - Tue, Dec 8

3:20 pm - 4:47 pmYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 27mnonstop

5:20 pm - 6:57 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 37mnonstop

$179Air Canada

Sat, Dec 5 - Sun, Dec 6

3:20 pm - 4:47 pmYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 27mnonstop

5:20 pm - 6:57 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 37mnonstop

$179Air Canada

Thu, Oct 29 - Sun, Nov 1

9:10 am - 10:38 amYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 28mnonstop

6:25 pm - 7:59 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 34mnonstop

$180Porter Airlines

Tue, Sep 29 - Fri, Oct 2

9:15 am - 10:45 amYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 30mnonstop

11:25 am - 12:55 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 30mnonstop

$180Porter Airlines

Thu, Oct 15 - Tue, Oct 20

1:40 pm - 3:10 pmYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 30mnonstop

11:25 am - 12:55 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 30mnonstop

$180Porter Airlines

Tue, Oct 6 - Wed, Oct 7

5:15 pm - 10:52 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

5h 37m1 stop Chicago O'Hare Intl

8:28 am - 10:04 amIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

1h 36mnonstop

$214United Airlines

Tue, Oct 6 - Wed, Oct 7

5:15 pm - 10:52 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

5h 37m1 stop Chicago O'Hare Intl

8:28 am - 10:04 amIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

1h 36mnonstop

$215United Airlines

Mon, Dec 7 - Tue, Dec 8

12:17 pm - 4:18 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

4h 01m1 stop Detroit Metropolitan Wayne County

6:20 pm - 10:54 pmIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

4h 34m1 stop New York John F Kennedy Intl

$215Delta

Tue, Oct 13 - Thu, Nov 12

9:40 am - 4:28 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

6h 48m1 stop Detroit Metropolitan Wayne County

6:00 am - 1:30 pmIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

7h 30m1 stop Detroit Metropolitan Wayne County

$220Delta

Recent last minute flight deals from Ontario to Dulles Intl

Wed, Sep 16 - Wed, Sep 23

1:55 pm - 3:25 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

1h 30mnonstop

9:55 am - 11:20 amIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

1h 25mnonstop

$228Air Canada

Wed, Sep 16 - Wed, Sep 23

6:55 pm - 8:25 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

1h 30mnonstop

9:45 am - 2:33 pmIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

4h 48m1 stop Montreal Pierre Elliott Trudeau Intl

$237Air Canada

Wed, Sep 16 - Wed, Sep 23

10:30 am - 3:00 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

4h 30m1 stop Montreal Pierre Elliott Trudeau Intl

9:45 am - 2:33 pmIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

4h 48m1 stop Montreal Pierre Elliott Trudeau Intl

$246Air Canada

Sun, Sep 20 - Sun, Sep 27

9:15 am - 10:45 amYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 30mnonstop

11:25 am - 12:55 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 30mnonstop

$250Porter Airlines

Sun, Sep 20 - Sun, Sep 27

9:15 am - 10:45 amYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 30mnonstop

11:25 am - 12:55 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 30mnonstop

$251Porter Airlines

Sat, Sep 19 - Sat, Sep 26

9:15 am - 10:45 amYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 30mnonstop

11:25 am - 12:55 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 30mnonstop

$251Porter Airlines

Sun, Sep 20 - Sun, Sep 27

4:05 pm - 11:14 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

7h 09m1 stop Detroit Metropolitan Wayne County

6:10 am - 1:34 pmIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

7h 24m1 stop Detroit Metropolitan Wayne County

$292Delta

Sat, Sep 19 - Thu, Oct 1

12:08 pm - 4:30 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

4h 22m1 stop Detroit Metropolitan Wayne County

6:10 am - 1:34 pmIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

7h 24m1 stop Detroit Metropolitan Wayne County

$308Delta

Tue, Sep 15 - Wed, Sep 30

9:44 am - 11:21 amYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

1h 37mnonstop

8:28 am - 10:04 amIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

1h 36mnonstop

$351United Airlines

Wed, Sep 16 - Sat, Sep 26

2:30 pm - 4:07 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

1h 37mnonstop

10:19 pm - 11:54 pmIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

1h 35mnonstop

$351United Airlines

Recent direct flight deals from Ontario to Dulles Intl

Mon, Dec 7 - Tue, Dec 8

3:20 pm - 4:47 pmYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 27mnonstop

5:20 pm - 6:57 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 37mnonstop

$179Air Canada

Sat, Dec 5 - Sun, Dec 6

3:20 pm - 4:47 pmYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 27mnonstop

5:20 pm - 6:57 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 37mnonstop

$179Air Canada

Tue, Dec 8 - Wed, Dec 9

3:20 pm - 4:47 pmYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 27mnonstop

5:20 pm - 6:57 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 37mnonstop

$179Air Canada

Tue, Sep 29 - Fri, Oct 2

9:15 am - 10:45 amYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 30mnonstop

11:25 am - 12:55 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 30mnonstop

$180Porter Airlines

Thu, Oct 15 - Tue, Oct 20

1:40 pm - 3:10 pmYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 30mnonstop

11:25 am - 12:55 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 30mnonstop

$180Porter Airlines

Thu, Oct 29 - Sun, Nov 1

9:10 am - 10:38 amYTZ Toronto Island-IAD Washington, D.C. Dulles Intl

1h 28mnonstop

6:25 pm - 7:59 pmIAD Washington, D.C. Dulles Intl-YTZ Toronto Island

1h 34mnonstop

$180Porter Airlines

Wed, Oct 14 - Sat, Nov 14

2:30 pm - 4:07 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

1h 37mnonstop

9:55 am - 11:22 amIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

1h 27mnonstop

$235Multiple Airlines

Sat, Oct 3 - Sun, Oct 11

9:44 am - 11:21 amYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

1h 37mnonstop

9:55 am - 11:20 amIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

1h 25mnonstop

$240Multiple Airlines

Tue, Sep 29 - Tue, Sep 29

12:45 pm - 2:22 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

1h 37mnonstop

5:17 pm - 7:02 pmIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

1h 45mnonstop

$280United Airlines

Wed, Oct 7 - Wed, Oct 7

12:45 pm - 2:22 pmYYZ Toronto Pearson Intl-IAD Washington, D.C. Dulles Intl

1h 37mnonstop

10:19 pm - 11:54 pmIAD Washington, D.C. Dulles Intl-YYZ Toronto Pearson Intl

1h 35mnonstop

$280United Airlines

Useful Info

Low season	January
High season	December
Cheapest flight	$119

Best time to beat the crowds with an average 17% drop in price.

Most popular time to fly and prices are also 11% lower on average.

Flight from Toronto Island to Washington Dulles Airport

KaseyFlew with Air Canada-Jun 2025

Come way early as US customs line up eats up your time

Verified travelerFlew with Air Canada-Dec 2024

Get on a regional sized (smaller than Boeing 737 or Airbus A320) jet if you can, they are older and have more legroom than newer aircraft.

Verified travelerFlew with United Airlines-Nov 2024

Do not carry bigger the specified sized bags for cabin baggage. Only one carry on ba

Verified travelerFlew with Air Canada-Aug 2024

Check the departure board carefully when you get to the airport.

How does KAYAK find such low prices on flights from Ontario to Washington Dulles Airport?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Washington Dulles Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Washington Dulles Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Ontario to Washington Dulles Airport?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to Ontario with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Washington Dulles Airport?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Winchester

Linthicum Heights

Hanover

Springfield

Gaithersburg

Towson

Martinsburg

Oxon Hill

Owings Mills

Charles Town

Greenbelt

Glen Burnie

Edgewood

Chesapeake Beach

Camp Springs

Ellicott City

Pikesville

Hunt Valley

Colonial Beach

Capitol Heights

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$119 Find Cheap Flights from Ontario to Washington Dulles Airport - Compare and Save

Cheap Flights from Ontario to Dulles Intl

Recent round-trip flight deals from Ontario to Dulles Intl

Recent one-way flight deals from Ontario to Dulles Intl

Recent last minute flight deals from Ontario to Dulles Intl

Recent direct flight deals from Ontario to Dulles Intl

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Flights from Ontario to Dulles Intl: the best tips from KAYAK users

FAQs for booking Ontario to Washington Dulles Airport flights

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More options for your flight to Dulles Intl

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