What are the cheapest airlines to fly from Region of Ontario to Washington, D.C. one-way?

The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $115. However, be on the lookout for offers from Porter Airlines and Air Transat, as they are both options that can get you from Region of Ontario to Washington, D.C. for a low price.

What are the most popular routes from Region of Ontario to Washington, D.C.?

Most travelers choose Toronto Pearson Intl - Washington, D.C. Dulles Intl, Toronto Pearson Intl - Washington, D.C. Reagan-National or Toronto Island - Washington, D.C. Dulles Intl when deciding on the best route from Region of Ontario to Washington, D.C..

What are the cheapest flights from Region of Ontario to Washington, D.C.?

On average you can expect to pay $290 for a flight from Region of Ontario to Washington, D.C.. The cheapest flight overall is $122 while the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl) is currently priced at $180.

What are the most reliable airlines from Region of Ontario to Washington, D.C.?

The top 3 most reliable airlines when flying from Region of Ontario to Washington, D.C. are ANA (90%), Avianca (87%) and Copa Airlines (84%).

How far in advance should I book a flight from Region of Ontario to Washington, D.C.?

To save up to 108% on this flight, we recommend booking at least 28 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Region of Ontario to Washington, D.C. from $301 1-2 weeks out and tickets from $485 for flights departing within the next 72 hours.

What is the cheapest month to fly from Region of Ontario to Washington, D.C.?

The best pricing can be found in the month of March. Prices to Washington, D.C. from Region of Ontario average $257. You can even find prices in March for less than $257, as users have found deals to Washington, D.C. from as low as $170. The month of August appears to be one of the more expensive times to travel to Washington, D.C. from Region of Ontario. Flying in the targeted month can save you up to 8%.

Can I find deals for flights from Ontario to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Ontario to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Washington, D.C.?

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

Can I find deals for business class flights from Ontario to Washington, D.C.?

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

$115+ Flights from Ontario to Washington, D.C. - Compare & Save Big

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Cheap flight deals from Ontario to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$172 (Booking.com)
One-way from	$115 (Air Canada)
Popular in	August
Cheapest in	March
Average price	$243
Good round-trip deal	$135 or less
Good one-way deal	$112 or less

Provider with most accurate pricing for Toronto (YTO)-Washington, D.C. (WAS) flight deals.

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Provider most trusted by Cheapflights users for Toronto (YTO)-Washington, D.C. (WAS) flights.

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From Ontario to Washington, D.C. (WAS)

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One-way flight from Ontario to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 1% potential increase in price ($5 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 0% potential price decrease ($2 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Price to beat on a round-trip flight from Ontario to Washington, D.C. (WAS).

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Price to beat on a one-way flight from Ontario to Washington, D.C. (WAS).

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Find flight deals from Ontario to Washington, D.C.

Cheapest flights from Ontario to Washington, D.C.
Explore the most affordable flight options available from Ontario to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

Tue 6/36:15 amYYZ - DCA

1 stop4h 04mAir Canada

Wed 6/46:00 amDCA - YYZ

1 stop4h 39mAir Canada

Deal found 4/28

$172

Tue 10/77:47 pmYYZ - IAD

Nonstop1h 38mAir Canada

Wed 10/88:20 amIAD - YYZ

1 stop10h 13mAir Canada

Deal found 4/28

$172

Fri 5/308:45 amYTZ - IAD

Nonstop1h 31mPorter Airlines

Wed 6/44:20 pmIAD - YTZ

Nonstop1h 33mPorter Airlines

Deal found 4/28

$173

Tue 6/37:47 pmYYZ - IAD

Nonstop1h 40mUnited Airlines

Wed 6/43:30 pmIAD - YYZ

Nonstop1h 39mUnited Airlines

Deal found 4/27

$180

Tue 6/34:20 pmYTZ - IAD

1 stop4h 44mAir Canada

Wed 6/41:00 pmIAD - YTZ

1 stop5h 37mAir Canada

Deal found 4/28

$184

Tue 6/33:25 pmYTZ - DCA

1 stop6h 28mAir Canada

Wed 6/412:55 pmDCA - YTZ

1 stop5h 42mAir Canada

Deal found 4/28

$184

Tue 6/31:35 pmYTZ - IAD

Nonstop1h 31mMultiple Airlines

Wed 6/41:00 pmIAD - YTZ

1 stop5h 37mMultiple Airlines

Deal found 4/28

$191

Wed 5/281:35 pmYTZ - IAD

Nonstop1h 31mAir Transat

Wed 6/44:20 pmIAD - YTZ

Nonstop1h 33mAir Transat

Deal found 4/28

$205

Wed 5/283:00 pmYYZ - DCA

1 stop4h 09mUnited Airlines

Thu 5/296:59 amDCA - YYZ

Nonstop1h 33mUnited Airlines

Deal found 4/27

$209

Fri 6/272:27 pmYYZ - DCA

1 stop8h 32mDelta

Mon 6/3011:00 amDCA - YYZ

1 stop6h 24mDelta

Deal found 4/28

$215

Fri 5/2312:10 pmYYZ - IAD

1 stop7h 32mDelta

Wed 5/285:24 pmIAD - YYZ

1 stop5h 34mDelta

Deal found 4/28

$215

Thu 5/294:30 pmYYZ - DCA

Nonstop1h 33mMultiple Airlines

Sun 6/16:59 amDCA - YYZ

Nonstop1h 33mMultiple Airlines

Deal found 4/27

$221

Best flights from Ontario to Washington, D.C.
Discover carefully curated flight deals from Ontario to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2025.

Tue 6/36:15 amYYZ - DCA

1 stop4h 04mAir Canada

Wed 6/46:00 amDCA - YYZ

1 stop4h 39mAir Canada

Deal found 4/28

$172

Fri 5/308:45 amYTZ - IAD

Nonstop1h 31mPorter Airlines

Wed 6/44:20 pmIAD - YTZ

Nonstop1h 33mPorter Airlines

Deal found 4/28

$173

Tue 6/37:47 pmYYZ - IAD

Nonstop1h 40mUnited Airlines

Wed 6/43:30 pmIAD - YYZ

Nonstop1h 39mUnited Airlines

Deal found 4/27

$180

Tue 6/31:35 pmYTZ - IAD

Nonstop1h 31mMultiple Airlines

Wed 6/41:00 pmIAD - YTZ

1 stop5h 37mMultiple Airlines

Deal found 4/28

$191

Wed 5/281:35 pmYTZ - IAD

Nonstop1h 31mAir Transat

Wed 6/44:20 pmIAD - YTZ

Nonstop1h 33mAir Transat

Deal found 4/28

$205

Fri 6/272:27 pmYYZ - DCA

1 stop8h 32mDelta

Mon 6/3011:00 amDCA - YYZ

1 stop6h 24mDelta

Deal found 4/28

$215

Tue 6/312:15 pmYYZ - BWI

1 stop4h 08mWestJet

Wed 6/45:40 amBWI - YYZ

1 stop4h 43mWestJet

Deal found 4/28

$241

Thu 5/228:55 pmYYZ - DCA

Nonstop1h 33mLufthansa

Sun 5/256:59 amDCA - YYZ

Nonstop1h 33mLufthansa

Deal found 4/28

$244

Thu 6/55:19 pmYYZ - DCA

Nonstop1h 40mAmerican Airlines

Mon 6/96:00 amDCA - YYZ

1 stop3h 49mAmerican Airlines

Deal found 4/28

$251

Thu 5/85:29 pmYYZ - DCA

Nonstop1h 40mWestJet Encore

Sun 5/1110:00 amDCA - YYZ

Nonstop1h 55mWestJet Encore

Deal found 4/28

$331

Tue 10/77:47 pmYYZ - IAD

Nonstop1h 38mAir Canada

Wed 10/88:20 amIAD - YYZ

1 stop10h 13mAir Canada

Deal found 4/28

$172

Tue 6/34:20 pmYTZ - IAD

1 stop4h 44mAir Canada

Wed 6/41:00 pmIAD - YTZ

1 stop5h 37mAir Canada

Deal found 4/28

$184

Last-minute flights from Ontario to Washington, D.C.
Discover last-minute flight deals from Ontario to Washington, D.C.. Data last updated April 29, 2025 and is based on user searches.

Mon 5/55:29 pmYYZ - DCA

Nonstop1h 40mAmerican Airlines

Tue 5/612:16 pmDCA - YYZ

1 stop6h 19mAmerican Airlines

Deal found 4/28

$253

Wed 5/74:55 pmYYZ - IAD

1 stop4h 01mUnited Airlines

Thu 5/88:25 amIAD - YYZ

Nonstop1h 39mUnited Airlines

Deal found 4/28

$268

Wed 5/78:00 pmYUL - IAD

1 stop11h 26mUnited Airlines

Thu 5/83:18 pmIAD - YUL

Nonstop1h 57mUnited Airlines

Deal found 4/28

$324

Thu 5/81:35 pmYTZ - IAD

Nonstop1h 31mPorter Airlines

Fri 5/164:20 pmIAD - YTZ

Nonstop1h 33mPorter Airlines

Deal found 4/28

$245

Thu 5/86:15 amYYZ - IAD

Nonstop1h 40mAir Canada

Sun 6/295:12 pmIAD - YYZ

Nonstop1h 53mAir Canada

Deal found 4/28

$271

Thu 5/86:15 amYYZ - DCA

1 stop4h 04mAir Canada

Sun 5/118:40 pmDCA - YYZ

Nonstop1h 33mAir Canada

Deal found 4/28

$298

Thu 5/811:30 amYYZ - BWI

1 stop7h 09mDelta

Mon 5/125:28 pmBWI - YYZ

1 stop5h 30mDelta

Deal found 4/27

$303

Thu 5/87:30 amYYZ - DCA

1 stop7h 06mUnited Airlines

Thu 5/88:40 pmDCA - YYZ

Nonstop1h 33mUnited Airlines

Deal found 4/28

$309

Thu 5/85:29 pmYYZ - DCA

Nonstop1h 40mWestJet Encore

Sun 5/1110:00 amDCA - YYZ

Nonstop1h 55mWestJet Encore

Deal found 4/28

$331

Fri 5/98:45 amYTZ - IAD

Nonstop1h 31mMultiple Airlines

Tue 5/134:20 pmIAD - YTZ

Nonstop1h 33mMultiple Airlines

Deal found 4/28

$294

Fri 5/910:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Mon 5/1211:35 amIAD - YUL

1 stop4h 25mPorter Airlines

Deal found 4/28

$299

Fri 5/96:30 amYYZ - DCA

1 stop5h 01mWestJet

Sun 5/119:40 amDCA - YYZ

1 stop5h 20mWestJet

Deal found 4/27

$337

One-way flights from Ontario to Washington, D.C.
Search for one-way flight options from Ontario to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated April 29, 2025.

Tue 5/204:30 pmYYZ - DCA

Nonstop1h 33mAir Canada

Deal found 4/28

$115

Wed 6/181:35 pmYTZ - IAD

Nonstop1h 31mPorter Airlines

Deal found 4/29

$115

Wed 5/281:35 pmYTZ - IAD

Nonstop1h 31mAir Transat

Deal found 4/28

$124

Wed 6/1110:05 amYYZ - IAD

Nonstop1h 34mUnited Airlines

Deal found 4/28

$130

Tue 6/33:25 pmYTZ - DCA

1 stop6h 28mAir Canada

Deal found 4/28

$130

Thu 6/1212:10 pmYYZ - IAD

Nonstop1h 31mAir Canada

Deal found 4/27

$132

Thu 6/124:20 pmYTZ - IAD

1 stop4h 44mAir Canada

Deal found 4/27

$133

Tue 6/173:00 pmYYZ - DCA

1 stop4h 40mUnited Airlines

Deal found 4/29

$135

Thu 6/123:31 pmYYZ - IAD

1 stop7h 24mDelta

Deal found 4/28

$136

Thu 6/121:35 pmYTZ - IAD

Nonstop1h 31mAPG Airlines

Deal found 4/27

$137

Sat 6/288:55 amYUL - IAD

1 stop6h 11mPorter Airlines

Deal found 4/28

$143

Tue 6/1711:01 amYYZ - DCA

Nonstop1h 40mAmerican Airlines

Deal found 4/29

$145

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoWashington, D.C.

YYZ - DCA

YYZDCA

Toronto Pearson Intl

Tue 6/3

6:15 am-10:19 am

1 stop4h 04m

Washington, D.C. Reagan-National

Wed 6/4

6:00 am-10:39 am

1 stop4h 39m

$172

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 5/30

8:45 am-10:16 am

Nonstop1h 31m

Washington, D.C. Dulles Intl

Wed 6/4

4:20 pm-5:53 pm

Nonstop1h 33m

$173

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 6/3

7:47 pm-9:27 pm

Nonstop1h 40m

Washington, D.C. Dulles Intl

Wed 6/4

3:30 pm-5:09 pm

Nonstop1h 39m

$180

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 6/3

8:10 am-9:41 am

Nonstop1h 31m

Washington, D.C. Dulles Intl

Wed 6/4

8:22 am-10:04 am

Nonstop1h 42m

$182

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 6/3

4:20 pm-9:04 pm

1 stop4h 44m

Washington, D.C. Dulles Intl

Wed 6/4

1:00 pm-6:37 pm

1 stop5h 37m

$184

TorontoWashington, D.C.

YTZ - DCA

YTZDCA

Toronto Island

Tue 6/3

3:25 pm-9:53 pm

1 stop6h 28m

Washington, D.C. Reagan-National

Wed 6/4

12:55 pm-6:37 pm

1 stop5h 42m

$184

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 6/3

1:35 pm-3:06 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Wed 6/4

1:00 pm-6:37 pm

1 stop5h 37m

$191

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 5/28

1:35 pm-3:06 pm

Nonstop1h 31m

Washington, D.C. Dulles Intl

Wed 6/4

4:20 pm-5:53 pm

Nonstop1h 33m

$205

TorontoWashington, D.C.

YYZ - DCA

YYZDCA

Toronto Pearson Intl

Wed 5/28

3:00 pm-7:09 pm

1 stop4h 09m

Washington, D.C. Reagan-National

Thu 5/29

6:59 am-8:32 am

Nonstop1h 33m

$209

TorontoWashington, D.C.

YYZ - DCA

YYZDCA

Toronto Pearson Intl

Fri 6/27

2:27 pm-10:59 pm

1 stop8h 32m

Washington, D.C. Reagan-National

Mon 6/30

11:00 am-5:24 pm

1 stop6h 24m

$215

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 60 results

...

Best time to book a flight from Ontario to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Ontario 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 Ontario to Washington, D.C.

What is the cheapest month to book a flight from Region of Ontario to Washington, D.C.?

Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of $309). Flying from Region of Ontario to Washington, D.C. in June is currently the most expensive (average of $373). 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 ON to WAS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Washington, D.C. as you normally would.

Weekly flight availability from Region of Ontario to Washington, D.C.

The most flights from CAON to WAS are scheduled on a Monday (31 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (26 on average).

Rainfall in Washington, D.C. by month

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

If weather is an important factor for your trip to Washington, D.C., 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with Porter Airlines, Delta and Air Transat from Ontario to Washington, D.C. to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Porter Airlines

8.0

Very good

285 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Delta

8.0

Very good

7,929 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Air Transat

7.8

Good

385 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

United Airlines

7.4

Good

8,696 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

American Airlines

7.2

Good

10,000 reviews

Porter Airlines

8.0

Very good

285 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

Related info for your journey

What are the cheapest airlines to fly from Region of Ontario to Washington, D.C. one-way?
The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $115. However, be on the lookout for offers from Porter Airlines and Air Transat, as they are both options that can get you from Region of Ontario to Washington, D.C. for a low price.
What are the most popular routes from Region of Ontario to Washington, D.C.?
Most travelers choose Toronto Pearson Intl - Washington, D.C. Dulles Intl, Toronto Pearson Intl - Washington, D.C. Reagan-National or Toronto Island - Washington, D.C. Dulles Intl when deciding on the best route from Region of Ontario to Washington, D.C..
What are the most reliable airlines from Region of Ontario to Washington, D.C.?
The top 3 most reliable airlines when flying from Region of Ontario to Washington, D.C. are ANA (90%), Avianca (87%) and Copa Airlines (84%).
What are the cheapest flights from Region of Ontario to Washington, D.C.?
On average you can expect to pay $290 for a flight from Region of Ontario to Washington, D.C.. The cheapest flight overall is $122 while the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl) is currently priced at $180.
Can I find deals for flights from Ontario to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Ontario to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Washington, D.C..
Can I find deals for business class flights from Ontario to Washington, D.C.?
Yes. Cheapflights offers flight deals from Ontario to Washington, D.C. 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 Region of Ontario to Washington, D.C.?
Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Washington, D.C. (average of $309). Flying from Region of Ontario to Washington, D.C. in June is currently the most expensive (average of $373). 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

Alexandria

Arlington

Woodbridge

Tysons

Fairfax

Springfield

Rockville

Fredericksburg

Silver Spring

Gaithersburg

Linthicum Heights

Falls Church

Laurel

Easton

Towson

Herndon

Bowie

National Harbor

Oxon Hill

Reston

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from Ontario to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$158	Average$369	FlexibilityNo cancel fee	On-time67%
Porter Airlines	Cheapest$168	Average$303	FlexibilityNo cancel fee	On-time52%
United Airlines	Cheapest$213	Average$350	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$219	Average$300	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$222	Average$280	FlexibilityNo cancel fee	On-timeN/A
WestJet	Cheapest$290	Average$404	FlexibilityNo cancel fee	On-time60%

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$115+ Cheap flights from Ontario to Washington, D.C. (WAS)

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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Washington, D.C. with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Washington, D.C.

Keep the following information in mind while searching for Ontario to Washington, D.C. flight deals. Data was last updated April 29, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Ontario to Washington, D.C.

Cheapest flights from Ontario to Washington, D.C.Explore the most affordable flight options available from Ontario to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

Explore the most affordable flight options available from Ontario to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Washington, D.C. that are best for you.

Best time to book a flight from Ontario to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Washington, D.C.

What is the cheapest month to book a flight from Region of Ontario to Washington, D.C.?

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

Find hourly flight availability from Ontario to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

Weekly flight availability from Region of Ontario to Washington, D.C.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with Porter Airlines, Delta and Air Transat from Ontario to Washington, D.C. to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the cheapest airlines to fly from Region of Ontario to Washington, D.C. one-way?

What are the most popular routes from Region of Ontario to Washington, D.C.?

What are the most reliable airlines from Region of Ontario to Washington, D.C.?

What are the cheapest flights from Region of Ontario to Washington, D.C.?

Can I find deals for flights from Ontario to Washington, D.C. that include hotel bookings?

How can I find direct flights from Ontario to Washington, D.C.?

Can I find deals for business class flights from Ontario to Washington, D.C.?

What is the cheapest month to book a flight from Region of Ontario to Washington, D.C.?

Traveling to a place near Ontario?

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 Ontario to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Ontario to Washington, D.C.

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Cheapest flights from Ontario to Washington, D.C.
Explore the most affordable flight options available from Ontario to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.