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$95+ 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YYZ
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$211
(Trip.com)

One-way from

$95
(Gotogate)

Popular in

August

Cheapest in

June

Average price

$278

Good round-trip deal

$230 or less

Good one-way deal

$112 or less
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 ($13 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/211:35 amIAD - YTZ
Nonstop1h 33mPorter Airlines
Sun 10/58:45 amYTZ - IAD
Nonstop1h 31mPorter Airlines
Deal found 9/10$211
This Mytrip deal was found by Cheapflights users on 9/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:00 amDCA - YYZ
1 stop5h 40mAir Canada
Sun 11/28:15 amYYZ - DCA
1 stop4h 04mAir Canada
Deal found 9/11$211
This Flightnetwork deal was found by Cheapflights users on 9/9. 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 9/242:25 pmIAD - YYZ
Nonstop1h 32mAir Canada
Thu 9/258:10 amYYZ - IAD
Nonstop1h 28mAir Canada
Deal found 9/9$211
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Sat 10/184:20 pmIAD - YTZ
Nonstop1h 33mPorter Airlines
Fri 10/318:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 9/10$212
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/3011:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Thu 11/68:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 9/11$213
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/28:59 pmIAD - YYZ
1 stop24h 22mMultiple Airlines
Mon 10/67:45 amYYZ - IAD
1 stop7h 54mMultiple Airlines
Deal found 9/9$213
This Mytrip deal was found by Cheapflights users on 9/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:00 amDCA - YTZ
1 stop5h 45mAir Canada
Wed 10/1510:25 amYTZ - DCA
1 stop5h 26mAir Canada
Deal found 9/11$213
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/1911:35 amIAD - YTZ
Nonstop1h 33mPorter Airlines
Fri 10/313:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Deal found 9/10$214
This Flightnetwork deal was found by Cheapflights users on 9/9. 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.
Mon 10/610:20 amIAD - YYZ
Nonstop1h 32mAir Canada
Tue 10/74:30 pmYYZ - IAD
1 stop4h 35mAir Canada
Deal found 9/9$214
This FlightHub deal was found by Cheapflights users on 9/10. 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 10/124:20 pmIAD - YTZ
Nonstop1h 33mPorter Airlines
Thu 10/168:45 amYTZ - IAD
Nonstop1h 31mPorter Airlines
Deal found 9/10$215
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/309:52 pmIAD - YYZ
1 stop19h 20mMultiple Airlines
Sun 11/22:20 pmYYZ - IAD
1 stop7h 49mMultiple Airlines
Deal found 9/9$215
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Tue 9/234:20 pmIAD - YTZ
Nonstop1h 33mPorter Airlines
Fri 9/261:35 pmYTZ - IAD
Nonstop1h 31mPorter Airlines
Deal found 9/9$216

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 September 11, 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

Fri 10/24

4:20 pm-5:53 pm

Nonstop1h 33m

Toronto Island

Tue 10/28

3:45 pm-5:14 pm

Nonstop1h 29m

$212

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 12/4

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Sun 12/7

3:45 pm-5:14 pm

Nonstop1h 29m

$212

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Wed 10/22

4:20 pm-5:53 pm

Nonstop1h 33m

Toronto Island

Tue 10/28

8:55 am-10:24 am

Nonstop1h 29m

$212

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 10/31

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Thu 11/6

8:55 am-10:24 am

Nonstop1h 29m

$213

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Mon 11/3

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Wed 11/5

3:45 pm-5:14 pm

Nonstop1h 29m

$213

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 10/30

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Wed 11/5

3:45 pm-5:14 pm

Nonstop1h 29m

$213

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Mon 11/3

11:40 am-1:10 pm

Nonstop1h 30m

Toronto Island

Tue 11/4

3:45 pm-5:14 pm

Nonstop1h 29m

$213

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sun 10/19

11:35 am-1:08 pm

Nonstop1h 33m

Toronto Island

Wed 10/29

3:45 pm-5:14 pm

Nonstop1h 29m

$214

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sat 10/25

4:20 pm-5:53 pm

Nonstop1h 33m

Toronto Island

Sat 11/1

3:30 pm-8:54 pm

1 stop5h 24m

$222

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Sat 10/25

4:35 pm-9:34 pm

1 stop4h 59m

Toronto Island

Sat 11/1

10:30 am-3:55 pm

1 stop5h 25m

$222

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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, January is the cheapest month in which you can book a flight from District of Columbia to Region of Ontario (average of $243). Flying from District of Columbia to Region of Ontario in August is currently the most expensive (average of $348). 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 September 11, 2025.

When flying from District of Columbia to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from District of Columbia to Region of Ontario

Explore weekly flight availability from District of Columbia to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2025.

The most flights from USDC to CAON are scheduled on a Wednesday (19 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).

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 September 11, 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
7.9
Good
363 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.9

Food

7.6

Crew

8.6

Overall

7.9

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
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.9

Food

7.6

Crew

8.6

Overall

7.9

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
7.7
Good
438 reviews
Porter Airlines
7.9
Good
363 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.9

Food

7.6

Crew

8.6

Overall

7.9

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
8,937 reviews
Porter Airlines
7.9
Good
363 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.9

Food

7.6

Crew

8.6

Overall

7.9

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
10,000 reviews
Porter Airlines
7.9
Good
363 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.9

Food

7.6

Crew

8.6

Overall

7.9

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
10,000 reviews
Porter Airlines
7.9
Good
363 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.9

Food

7.6

Crew

8.6

Overall

7.9

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 Delta can get you from District of Columbia to Region of Ontario in just under 1h 33m. Your travel time can differ by up to 3h 26m. 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 $97. However, be on the lookout for offers from Porter Airlines and Delta, 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, January is the cheapest month in which you can book a flight from District of Columbia to Region of Ontario (average of $243). Flying from District of Columbia to Region of Ontario in August is currently the most expensive (average of $348). 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$54Average$315FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$127Average$402FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$137Average$367FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$176Average$246FlexibilityNo cancel feeOn-time50%
American AirlinesCheapest$233Average$380FlexibilityNo cancel feeOn-time71%
DeltaCheapest$242Average$316FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$278Average$550FlexibilityNo cancel feeOn-time60%

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