Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from District of Columbia to Ontario from C$ 137

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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YYZ
11 Apr — 18 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from District of Columbia to Ontario

Enter your travel dates to find the best prices.

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 12 March 2026.

Fri 3/411:40 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Mon 6/43:45 p.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 7/3C$ 316
Thu 2/46:00 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Mon 6/43:45 p.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 9/3C$ 323
Fri 3/411:40 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Sat 11/411:30 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 8/3C$ 325
Thu 23/411:40 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Thu 30/49:25 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 9/3C$ 326
Fri 17/46:00 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Sun 26/43:45 p.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 8/3C$ 329
Fri 8/54:05 p.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Sun 10/51:50 p.m.
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Deal found 7/3C$ 330
Fri 3/411:40 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Wed 8/49:25 a.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 8/3C$ 331
Thu 16/411:40 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Sun 19/43:45 p.m.
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Deal found 8/3C$ 333
Fri 8/511:30 a.m.
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Tue 12/59:15 a.m.
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Deal found 9/3C$ 334
Thu 23/412:55 p.m.
DCA
-
YTZ
1 stop5h 27m
Air Canada
Thu 30/47:55 a.m.
YTZ
-
DCA
1 stop4h 06m
Air Canada
Deal found 9/3C$ 357
Fri 24/412:55 p.m.
DCA
-
YTZ
1 stop5h 27m
Air Canada
Fri 1/57:50 a.m.
YTZ
-
DCA
1 stop4h 11m
Air Canada
Deal found 10/3C$ 360
Thu 9/412:55 p.m.
DCA
-
YTZ
1 stop5h 27m
Air Canada
Mon 13/47:55 a.m.
YTZ
-
DCA
1 stop4h 06m
Air Canada
Deal found 11/3C$ 361

Find 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 12 March 2026.

Round-trip from

C$ 316

One-way from

C$ 137

Popular in

November

Cheapest in

June

Average price

C$ 424

Good round-trip deal

C$ 279 or less

Good one-way deal

C$ 208 or less
Porter Airlines
  • Porter Airlines
  • 3/4-6/4
  • Nonstop
  • 2h 59m total
  • District of Columbia to Ontario
Search Deals
Air Canada
  • Air Canada
  • 3/4
  • 1 total stop
  • 4h 30m total
  • District of Columbia to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from District of Columbia to Ontario.
Search Deals
Price to beat on a one-way flight from District of Columbia to Ontario.
Search Deals

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 629,999 searches. Data last updated 12 March 2026.
Use the filters below to find and compare flights from District of Columbia to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Mon 25/5

4:05 p.m.-5:35 p.m.

Nonstop1h 30m

Toronto Island

Fri 29/5

1:50 p.m.-3:21 p.m.

Nonstop1h 31m

C$ 334

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Sun 3/5

4:05 p.m.-5:35 p.m.

Nonstop1h 30m

Toronto Island

Fri 8/5

9:15 a.m.-10:46 a.m.

Nonstop1h 31m

C$ 334
Quickest round-trip

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Mon 20/4

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

Toronto Island

Thu 23/4

9:25 a.m.-10:54 a.m.

Nonstop1h 29m

C$ 364

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 10/4

6:00 p.m.-7:30 p.m.

Nonstop1h 30m

Toronto Island

Fri 17/4

3:45 p.m.-5:14 p.m.

Nonstop1h 29m

C$ 367

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 2/4

6:00 p.m.-7:30 p.m.

Nonstop1h 30m

Toronto Island

Mon 6/4

3:45 p.m.-5:14 p.m.

Nonstop1h 29m

C$ 373

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Fri 17/4

6:00 p.m.-7:30 p.m.

Nonstop1h 30m

Toronto Island

Sun 26/4

3:45 p.m.-5:14 p.m.

Nonstop1h 29m

C$ 379

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Mon 4/5

11:30 a.m.-1:00 p.m.

Nonstop1h 30m

Toronto Island

Thu 7/5

1:50 p.m.-3:21 p.m.

Nonstop1h 31m

C$ 395

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

Thu 23/4

11:40 a.m.-1:10 p.m.

Nonstop1h 30m

Toronto Island

Thu 30/4

9:25 a.m.-10:54 a.m.

Nonstop1h 29m

C$ 395

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Fri 17/4

6:00 a.m.-3:02 p.m.

2 stops9h 02m

Toronto Island

Mon 20/4

7:55 a.m.-12:01 p.m.

1 stop4h 06m

C$ 422

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

Mon 4/5

12:45 p.m.-6:22 p.m.

1 stop5h 37m

Toronto Island

Wed 6/5

7:50 a.m.-12:01 p.m.

1 stop4h 11m

C$ 424

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/3

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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, June is the cheapest month in which you can book a flight from District of Columbia to Region of Ontario (average of C$ 143). Flying from District of Columbia to Region of Ontario in February is currently the most expensive (average of C$ 243). 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 12 March 2026.

It’s optimal to fly from District of Columbia to Region of Ontario at noon. By choosing this option you can save up to 41% on the cost of your flight, compared to a flight in the afternoon.

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 23 February 2025.

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

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 12 March 2026.

The most flights from USDC to CAON are scheduled on a Monday (16 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (16 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 12 March 2026.
See what other customers who have flown with Porter Airlines,United Airlines, andAir Canada from District of Columbia to Ontario have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
423 reviews
Check prices

Comfort

8.0

Food

7.6

Boarding

8.2

Entertainment

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
423 reviews
Porter Airlines
8.0
Very good
423 reviews
Check prices

Comfort

8.0

Food

7.6

Boarding

8.2

Entertainment

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
United Airlines
7.4
Good
9,418 reviews
Porter Airlines
8.0
Very good
423 reviews
Check prices

Comfort

8.0

Food

7.6

Boarding

8.2

Entertainment

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Canada
7.1
Good
10,800 reviews
Porter Airlines
8.0
Very good
423 reviews
Check prices

Comfort

8.0

Food

7.6

Boarding

8.2

Entertainment

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

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?

    Departing from District of Columbia to Region of Ontario will take you 1h 30m. The distance from District of Columbia to Region of Ontario is about 546 km. Both multi-stop and direct flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as C$ 94 on Porter Airlines. Other airlines that offer cheap prices include Air Transat from C$ 95 and United Airlines from C$ 109 one-way.

  • 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, June is the cheapest month in which you can book a flight from District of Columbia to Region of Ontario (average of C$ 143). Flying from District of Columbia to Region of Ontario in February is currently the most expensive (average of C$ 243). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for District of Columbia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Vancouver Intl flights
Newark to Toronto Island flights
Newark to Pearson Intl flights
Newark to Pierre Elliott Trudeau Intl flights
John F Kennedy Intl to Vancouver Intl flights
LaGuardia to Pearson Intl flights
San Francisco to Vancouver Intl flights
Newark to Vancouver Intl flights
LaGuardia to Pierre Elliott Trudeau Intl flights
John F Kennedy Intl to Pierre Elliott Trudeau Intl flights
John F Kennedy Intl to Pearson Intl flights
Los Angeles to Pearson Intl flights
Newark to Calgary flights
John F Kennedy Intl to Calgary flights
Dulles Intl to Vancouver Intl flights
San Francisco to Pearson Intl flights
O'Hare Intl to Vancouver Intl flights
O'Hare Intl to Pearson Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Dallas/Fort Worth to Pearson Intl flights
Hobby to Vancouver Intl flights
O'Hare Intl to Calgary flights
Reagan-National to Pearson Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Dulles Intl to Pearson Intl flights
LaGuardia to Vancouver Intl flights
George Bush Intcntl to Vancouver Intl flights
Los Angeles to Calgary flights
San Francisco to Calgary flights
San Francisco to Pierre Elliott Trudeau Intl flights
Boston to Pearson Intl flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
Atlanta to Vancouver Intl flights
Los Angeles to Pierre Elliott Trudeau Intl flights
Ontario to Vancouver Intl flights
Denver to Vancouver Intl flights
Boston to Vancouver Intl flights
Minneapolis to Vancouver Intl flights
Boston to Toronto Island flights
Boston to Pierre Elliott Trudeau Intl flights
San Diego to Vancouver Intl flights
Seattle to Pearson Intl flights
Boston to Calgary flights
Reagan-National to Vancouver Intl flights
LaGuardia to Calgary flights
Baltimore to Vancouver Intl flights
Dulles Intl to Calgary flights
Dallas/Fort Worth to Pierre Elliott Trudeau Intl flights
Santa Ana to Vancouver Intl flights
Dallas/Fort Worth to Vancouver Intl flights

Top 4 airlines flying from District of Columbia to Ontario

Discover the top 4 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 629,999 searches. Data last updated 12 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 154AverageC$ 500FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Porter AirlinesCheapestC$ 162AverageC$ 412FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 247AverageC$ 463FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 449AverageC$ 798FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from District of Columbia to Ontario?

Deals for District of Columbia to Ontario flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from District of Columbia to Ontario?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from District of Columbia to Ontario for you. Better yet — we are completely free to use.

Can Cheapflights find flights from District of Columbia to Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from District of Columbia to Ontario with no change fees.

Can Cheapflights notify me if prices for flights from District of Columbia to Ontario become cheaper?

Yes, Cheapflights offers price alerts on District of Columbia to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.