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$101+ Cheap flights from District of Columbia to Ontario

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 12/27. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YYZ
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from District of Columbia to Ontario

Keep the following information in mind while searching for District of Columbia to Ontario flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$209
(Kiwi.com)

One-way from

$101
(Mytrip)

Popular in

October

Cheapest in

June

Average price

$319

Good round-trip deal

$231 or less

Good one-way deal

$134 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Toronto (YTO) flights.
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From District of Columbia to Ontario
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One-way flight from District of Columbia to Ontario
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Highest demand for flights based on searches. 4% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from District of Columbia to Ontario.
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Price to beat on a one-way flight from District of Columbia to Ontario.
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Find flight deals from District of Columbia to Ontario

Cheapest flights from District of Columbia to Ontario
Explore the most affordable flight options available from District of Columbia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Sun 11/238:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 10/29$209
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Sun 11/238:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 10/29$210
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Sat 12/611:00 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 10/29$211
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/711:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Thu 12/118:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 10/29$214
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2411:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Wed 12/38:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 10/29$215
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2711:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Thu 11/273:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 10/29$218
This FlightHub deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Fri 11/283:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 10/29$219
This Flightnetwork deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:00 amDCA - YTZ
1 stop5h 55mAir Canada
Fri 11/288:30 amYTZ - DCA
1 stop7h 01mAir Canada
Deal found 10/28$219
This Flightnetwork deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/209:45 amIAD - YTZ
1 stop7h 10mAir Canada
Sun 11/233:30 pmYTZ - IAD
1 stop5h 24mAir Canada
Deal found 10/29$220
This Flightnetwork deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2012:55 pmDCA - YTZ
1 stop5h 18mAir Canada
Sun 11/238:30 amYTZ - DCA
1 stop7h 01mAir Canada
Deal found 10/29$220
This FlightHub deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/221:45 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Fri 11/283:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 10/28$223
This Flightnetwork deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:55 pmDCA - YYZ
1 stop6h 31mAir Canada
Sun 12/146:10 pmYYZ - DCA
Nonstop1h 35mAir Canada
Deal found 10/30$223

Cheapflights Fare Finder

 
Customize your flight search to find flights from District of Columbia to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from District of Columbia to Ontario that are best for you.

Fly from

District of Columbia

Fly to

Ontario

Route

Depart

Return

Price

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Tue 11/25

6:30 pm-8:00 pm

Nonstop1h 30m

Toronto Island

Fri 11/28

3:45 pm-5:14 pm

Nonstop1h 29m

$209

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 1/8

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Sun 1/11

8:55 am-10:24 am

Nonstop1h 29m

$209

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 11/20

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Sun 11/23

8:55 am-10:24 am

Nonstop1h 29m

$214

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 12/11

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Thu 12/11

3:45 pm-5:14 pm

Nonstop1h 29m

$214

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Wed 11/26

6:00 am-11:55 am

1 stop5h 55m

Toronto Island

Fri 11/28

8:30 am-3:31 pm

1 stop7h 01m

$219

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Thu 11/20

12:55 pm-6:13 pm

1 stop5h 18m

Toronto Island

Sun 11/23

8:30 am-3:31 pm

1 stop7h 01m

$220

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 12/11

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Sun 12/14

8:55 am-10:24 am

Nonstop1h 29m

$243

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 12/10

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Tue 12/16

3:45 pm-5:14 pm

Nonstop1h 29m

$248

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 12/12

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Wed 12/17

8:55 am-10:24 am

Nonstop1h 29m

$248

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 12/10

6:30 pm-8:00 pm

Nonstop1h 30m

Toronto Island

Mon 12/15

8:55 am-10:24 am

Nonstop1h 29m

$248

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 60 results
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Best time to book a flight from District of Columbia to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from District of Columbia 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 from District of Columbia to Ontario

What is the cheapest month to book a flight from District of Columbia to Region of Ontario?

Currently, March is the cheapest month in which you can book a flight from District of Columbia to Region of Ontario (average of $91). Flying from District of Columbia to Region of Ontario in August is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DC to ON?

Find hourly flight availability from District of Columbia to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 33% on flights from District of Columbia to Region of Ontario by exploring options for tickets at noon.

What is the cheapest day to fly from District of Columbia to Region of Ontario?

Use this chart to determine the cheapest time to fly round-trip from District of Columbia to Ontario. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their District of Columbia to Region of Ontario flight should consider departing on Friday at noon when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from District of Columbia to Region of Ontario?

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated October 30, 2025.
Get a feel of what it's like to fly with Porter Airlines, Air Transat, and United Airlines from District of Columbia to Ontario by reading reviews from past customers. 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
384 reviews

Comfort

8.0

Boarding

8.2

Food

7.6

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very good
384 reviews
Porter Airlines
8.0
Very good
384 reviews

Comfort

8.0

Boarding

8.2

Food

7.6

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Transat
7.8
Good
469 reviews
Porter Airlines
8.0
Very good
384 reviews

Comfort

8.0

Boarding

8.2

Food

7.6

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,998 reviews
Porter Airlines
8.0
Very good
384 reviews

Comfort

8.0

Boarding

8.2

Food

7.6

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
American Airlines
7.2
Good
11,030 reviews
Porter Airlines
8.0
Very good
384 reviews

Comfort

8.0

Boarding

8.2

Food

7.6

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,377 reviews
Porter Airlines
8.0
Very good
384 reviews

Comfort

8.0

Boarding

8.2

Food

7.6

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

Find useful and relevant information for your journey from District of Columbia to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from District of Columbia to Region of Ontario?

    Porter Airlines, Air Canada, and United Airlines can get you from District of Columbia to Region of Ontario in just under 1h 30m. Your travel time can differ by up to 4h 25m. District of Columbia and Region of Ontario are separated by a distance of 339 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from District of Columbia to Region of Ontario one-way?

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $101. However, be on the lookout for offers from Porter Airlines and American Airlines, as they are both options that can get you from District of Columbia to Region of Ontario for a low price.

  • Can I find deals for flights from District of Columbia to Ontario that include hotel bookings?

    Yes. In addition to deals on District of Columbia to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from District of Columbia to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from District of Columbia to Ontario.

  • Can I find deals for business class flights from District of Columbia to Ontario?

    Yes. Cheapflights offers flight deals from District of Columbia to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from District of Columbia to Region of Ontario?

    Currently, March is the cheapest month in which you can book a flight from District of Columbia to Region of Ontario (average of $91). Flying from District of Columbia to Region of Ontario in August is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for District of Columbia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from District of Columbia to Ontario

Discover the top 7 airlines that operate flights from District of Columbia to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$54Average$314FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$127Average$404FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$144Average$379FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$176Average$246FlexibilityNo cancel feeOn-time50%
American AirlinesCheapest$253Average$394FlexibilityNo cancel feeOn-time71%
DeltaCheapest$255Average$317FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$319Average$568FlexibilityNo cancel feeOn-time60%

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