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

$79 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on APG Airlines and Air Transat, with prices starting from $85 and $89, respectively.

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

The most popular flight routes from Washington, D.C. to Region of Ontario are Washington, D.C. Dulles Intl - Toronto Pearson Intl, Washington, D.C. Reagan-National - Toronto Pearson Intl and Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl.

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

On average you can expect to pay $927 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is $94 while the most popular route, (Washington, D.C. Dulles Intl - Toronto Pearson Intl) is currently priced at $199.

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

Before booking your flight to Region of Ontario from Washington, D.C., check out the most reliable airlines to get you to your destination on time: ANA (87%), Republic Airways (80%), Air Canada( 80%).

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

When booking a flight from Washington, D.C. to Region of Ontario, you may want to consider flying on Air Canada, Porter Airlines or United Airlines as they are the most popular for this route.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 44 days in advance, which can save you up to 122% on flights from Washington, D.C. to Region of Ontario compared to booking the week you need them. Waiting 44 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $332. For sooner than that we have options available in the next 3 days from $611.

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

March can be a great time to fly to Region of Ontario from Washington, D.C. with a flight ticket averaging about $298. Cheapflights users have found deals in the month of March for as cheap as $169. The most expensive prices can be found in the month of August.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$79+ Flights from Washington, D.C. to Ontario

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

Most accurate provider	Mytrip 3 stars
Most trusted provider	Mytrip 3 stars
Round-trip from	$180 (Mytrip)
One-way from	$79 (Air Canada)
Popular in	August
Cheapest in	March
Average price	$278
Good round-trip deal	$199 or less
Good one-way deal	$108 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 Washington, D.C. (WAS) to Ontario

Search Deals

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

Search Deals

Highest demand for flights based on searches. 2% potential increase in price ($9 potential increase over avg. RT price).

Search Deals

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 April 2025

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

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

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

Cheapest flights from Washington, D.C. to Ontario
Explore the most affordable flight options available from Washington, D.C. to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 22, 2025.

mié. 6/114:20 pmIAD - YTZ

Nonstop1h 33mMultiple Airlines

mié. 6/184:20 pmYTZ - IAD

1 stop4h 44mMultiple Airlines

Deal found 4/21

$180

jue. 5/86:00 amDCA - YYZ

1 stop4h 39mAir Canada

dom. 5/116:15 amYYZ - DCA

1 stop4h 04mAir Canada

Deal found 4/20

$181

mié. 5/288:22 amIAD - YYZ

Nonstop1h 42mAir Canada

mié. 5/2812:05 pmYYZ - IAD

1 stop4h 10mAir Canada

Deal found 4/21

$181

lun. 5/511:35 amIAD - YTZ

Nonstop1h 33mPorter Airlines

sáb. 5/171:35 pmYTZ - IAD

Nonstop1h 31mPorter Airlines

Deal found 4/20

$183

vie. 5/912:55 pmDCA - YTZ

1 stop5h 42mAir Canada

mar. 5/1310:25 amYTZ - DCA

1 stop5h 24mAir Canada

Deal found 4/20

$206

mar. 5/138:15 amIAD - YYZ

1 stop8h 48mMultiple Airlines

mar. 5/137:47 pmYYZ - IAD

Nonstop1h 38mMultiple Airlines

Deal found 4/21

$225

lun. 5/59:41 amDCA - YYZ

1 stop7h 37mDelta

mar. 5/1312:15 pmYYZ - DCA

1 stop3h 44mDelta

Deal found 4/20

$233

vie. 6/66:00 amIAD - YYZ

1 stop5h 25mDelta

vie. 6/133:31 pmYYZ - IAD

1 stop7h 24mDelta

Deal found 4/22

$233

jue. 6/51:00 pmIAD - YTZ

1 stop7h 37mAir Canada

jue. 6/124:20 pmYTZ - IAD

1 stop4h 44mAir Canada

Deal found 4/21

$234

sáb. 6/148:38 pmBWI - YYZ

1 stop17h 27mMultiple Airlines

mar. 6/176:30 amYYZ - BWI

1 stop16h 27mMultiple Airlines

Deal found 4/22

$238

jue. 5/154:20 pmIAD - YUL

1 stop5h 55mPorter Airlines

dom. 5/1810:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 4/22

$246

sáb. 5/177:00 amDCA - YYZ

1 stop5h 46mUnited Airlines

sáb. 5/174:30 pmYYZ - DCA

Nonstop1h 33mUnited Airlines

Deal found 4/21

$252

Best flights from Washington, D.C. to Ontario
Discover carefully curated flight deals from Washington, D.C. to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 22, 2025.

mié. 6/114:20 pmIAD - YTZ

Nonstop1h 33mMultiple Airlines

mié. 6/184:20 pmYTZ - IAD

1 stop4h 44mMultiple Airlines

Deal found 4/21

$180

jue. 5/86:00 amDCA - YYZ

1 stop4h 39mAir Canada

dom. 5/116:15 amYYZ - DCA

1 stop4h 04mAir Canada

Deal found 4/20

$181

lun. 5/511:35 amIAD - YTZ

Nonstop1h 33mPorter Airlines

dom. 5/188:45 amYTZ - IAD

Nonstop1h 31mPorter Airlines

Deal found 4/20

$183

lun. 5/59:41 amDCA - YYZ

1 stop7h 37mDelta

mar. 5/1312:15 pmYYZ - DCA

1 stop3h 44mDelta

Deal found 4/20

$233

sáb. 5/177:00 amDCA - YYZ

1 stop5h 46mUnited Airlines

sáb. 5/174:30 pmYYZ - DCA

Nonstop1h 33mUnited Airlines

Deal found 4/21

$252

sáb. 7/52:54 pmDCA - YYZ

Nonstop1h 40mAmerican Airlines

jue. 7/105:15 pmYYZ - DCA

Nonstop1h 45mAmerican Airlines

Deal found 4/20

$255

mié. 5/289:40 amDCA - YYZ

1 stop5h 20mWestJet

mié. 5/286:49 pmYYZ - DCA

1 stop4h 00mWestJet

Deal found 4/21

$256

sáb. 6/214:20 pmIAD - YTZ

Nonstop1h 33mAir Transat

jue. 6/261:35 pmYTZ - IAD

Nonstop1h 31mAir Transat

Deal found 4/21

$266

jue. 5/159:45 amIAD - YUL

Nonstop1h 55mLufthansa

dom. 5/189:15 amYUL - IAD

Nonstop1h 59mLufthansa

Deal found 4/21

$312

mié. 5/288:22 amIAD - YYZ

Nonstop1h 42mAir Canada

mié. 5/2812:05 pmYYZ - IAD

1 stop4h 10mAir Canada

Deal found 4/21

$181

mar. 5/138:15 amIAD - YYZ

1 stop8h 48mMultiple Airlines

mar. 5/137:47 pmYYZ - IAD

Nonstop1h 38mMultiple Airlines

Deal found 4/21

$225

vie. 5/912:55 pmDCA - YTZ

1 stop5h 42mAir Canada

mar. 5/1310:25 amYTZ - DCA

1 stop5h 24mAir Canada

Deal found 4/20

$206

Last-minute flights from Washington, D.C. to Ontario
Discover last-minute flight deals from Washington, D.C. to Ontario. Data last updated abril 22, 2025 and is based on user searches.

dom. 4/272:00 pmIAD - YTZ

Nonstop1h 30mPorter Airlines

lun. 5/58:45 amYTZ - IAD

Nonstop1h 31mPorter Airlines

Deal found 4/20

$239

dom. 4/278:25 amIAD - YYZ

Nonstop1h 39mAir Canada

lun. 5/56:15 amYYZ - IAD

Nonstop1h 40mAir Canada

Deal found 4/20

$288

dom. 4/274:10 pmDCA - YTZ

1 stop5h 25mAir Canada

lun. 5/55:25 pmYTZ - DCA

1 stop4h 28mAir Canada

Deal found 4/20

$292

mié. 4/301:45 pmIAD - YUL

1 stop4h 17mPorter Airlines

dom. 5/1110:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 4/22

$356

mié. 4/306:50 amBWI - YYZ

3 stops28h 45mMultiple Airlines

jue. 5/86:30 amYYZ - BWI

1 stop16h 11mMultiple Airlines

Deal found 4/21

$358

jue. 5/16:05 amDCA - YYZ

1 stop8h 30mAmerican Airlines

jue. 5/85:29 pmYYZ - DCA

Nonstop1h 40mAmerican Airlines

Deal found 4/20

$297

jue. 5/111:00 amDCA - YYZ

1 stop5h 10mDelta

jue. 5/86:49 pmYYZ - DCA

1 stop4h 00mDelta

Deal found 4/20

$316

jue. 5/111:35 amIAD - YTZ

Nonstop1h 33mMultiple Airlines

lun. 5/58:45 amYTZ - IAD

Nonstop1h 31mMultiple Airlines

Deal found 4/21

$329

jue. 5/14:20 pmIAD - YTZ

Nonstop1h 33mAir Transat

mar. 5/61:35 pmYTZ - IAD

Nonstop1h 31mAir Transat

Deal found 4/22

$384

vie. 5/26:59 amDCA - YYZ

Nonstop1h 33mAir Canada

lun. 5/58:55 pmYYZ - DCA

Nonstop1h 33mAir Canada

Deal found 4/20

$288

vie. 5/29:45 amIAD - YTZ

1 stop7h 05mAir Canada

lun. 5/53:25 pmYTZ - IAD

1 stop5h 43mAir Canada

Deal found 4/21

$368

vie. 5/24:20 pmIAD - YOW

1 stop4h 43mPorter Airlines

lun. 5/57:00 amYOW - IAD

1 stop3h 16mPorter Airlines

Deal found 4/21

$379

One-way flights from Washington, D.C. to Ontario
Search for one-way flight options from Washington, D.C. to Ontario. Find affordable one-way fares based on user searches. Data last updated abril 22, 2025.

mié. 6/1112:55 pmDCA - YYZ

1 stop4h 05mAir Canada

Deal found 4/22

$79

mar. 6/102:25 pmIAD - YYZ

Nonstop1h 34mAir Canada

Deal found 4/22

$81

mié. 6/254:20 pmIAD - YTZ

Nonstop1h 33mAPG Airlines

Deal found 4/22

$85

mar. 6/106:00 amDCA - YTZ

1 stop5h 47mAir Canada

Deal found 4/22

$87

sáb. 5/104:20 pmIAD - YTZ

Nonstop1h 33mAir Transat

Deal found 4/21

$89

vie. 5/306:00 amDCA - YYZ

1 stop3h 30mDelta

Deal found 4/22

$89

mié. 6/49:40 amIAD - YYZ

1 stop7h 35mDelta

Deal found 4/21

$89

lun. 5/510:04 amDCA - YYZ

Nonstop1h 55mAmerican Airlines

Deal found 4/21

$90

jue. 6/1211:35 amIAD - YTZ

Nonstop1h 33mPorter Airlines

Deal found 4/21

$94

mar. 6/105:40 amBWI - YYZ

1 stop4h 44mDelta

Deal found 4/22

$100

sáb. 5/317:57 pmBWI - YYZ

1 stop18h 08mMultiple Airlines

Deal found 4/21

$107

dom. 5/184:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Deal found 4/21

$112

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

mié. 6/11

4:20 pm-5:53 pm

Nonstop1h 33m

Toronto Island

mié. 6/18

4:20 pm-9:04 pm

1 stop4h 44m

$180

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

jue. 5/8

6:00 am-10:39 am

1 stop4h 39m

Toronto Pearson Intl

dom. 5/11

6:15 am-10:19 am

1 stop4h 04m

$181

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

mié. 5/28

8:22 am-10:04 am

Nonstop1h 42m

Toronto Pearson Intl

mié. 5/28

12:05 pm-4:15 pm

1 stop4h 10m

$181

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

lun. 5/5

11:35 am-1:08 pm

Nonstop1h 33m

Toronto Island

sáb. 5/17

1:35 pm-3:06 pm

Nonstop1h 31m

$183

Washington, D.C.Toronto

DCA - YTZ

DCAYTZ

Washington, D.C. Reagan-National

vie. 5/9

12:55 pm-6:37 pm

1 stop5h 42m

Toronto Island

mar. 5/13

10:25 am-3:49 pm

1 stop5h 24m

$206

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

mar. 5/13

8:15 am-5:03 pm

1 stop8h 48m

Toronto Pearson Intl

mar. 5/13

7:47 pm-9:25 pm

Nonstop1h 38m

$225

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

lun. 5/5

9:41 am-5:18 pm

1 stop7h 37m

Toronto Pearson Intl

mar. 5/13

12:15 pm-3:59 pm

1 stop3h 44m

$233

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

vie. 6/6

6:00 am-11:25 am

1 stop5h 25m

Toronto Pearson Intl

vie. 6/13

6:05 pm-10:55 pm

1 stop4h 50m

$233

Washington, D.C.Toronto

IAD - YTZ

IADYTZ

Washington, D.C. Dulles Intl

jue. 6/5

1:00 pm-8:37 pm

1 stop7h 37m

Toronto Island

jue. 6/12

4:20 pm-9:04 pm

1 stop4h 44m

$234

BaltimoreToronto

BWI - YYZ

BWIYYZ

Baltimore/Washington

sáb. 6/14

8:38 pm-2:05 pm

1 stop17h 27m

Toronto Pearson Intl

mar. 6/17

6:30 am-10:57 pm

1 stop16h 27m

$238

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 60 results

...

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

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

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $243). Flying from Washington, D.C. to Region of Ontario in July is currently the most expensive (average of $359). 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 WAS to ON?

When flying from Washington, D.C. 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 Washington, D.C. to Region of Ontario

The most flights from WAS to CAON are scheduled on a Monday (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).

Rainfall in Ontario by month

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

If weather is an important factor for your trip to Region of Ontario, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Ontario

See what other customers who have flown with Porter Airlines, Delta and Air Transat from Washington, D.C. to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

284 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

284 reviews

Porter Airlines

8.0

Very good

284 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

7,920 reviews

Porter Airlines

8.0

Very good

284 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

284 reviews

Reviews

1 / 18

10.0

Excellent

Anonymous,Apr 2025

MCO - YHZ

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

Finnair

7.6

Good

1,272 reviews

Porter Airlines

8.0

Very good

284 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

8,683 reviews

Porter Airlines

8.0

Very good

284 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 Washington, D.C. to Region of Ontario one-way?
$79 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on APG Airlines and Air Transat, with prices starting from $85 and $89, respectively.
What are the most popular routes from Washington, D.C. to Region of Ontario?
The most popular flight routes from Washington, D.C. to Region of Ontario are Washington, D.C. Dulles Intl - Toronto Pearson Intl, Washington, D.C. Reagan-National - Toronto Pearson Intl and Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl.
What are the most reliable airlines from Washington, D.C. to Region of Ontario?
Before booking your flight to Region of Ontario from Washington, D.C., check out the most reliable airlines to get you to your destination on time: ANA (87%), Republic Airways (80%), Air Canada( 80%).
What are the cheapest flights from Washington, D.C. to Region of Ontario?
On average you can expect to pay $927 for a flight from Washington, D.C. to Region of Ontario. The cheapest flight overall is $94 while the most popular route, (Washington, D.C. Dulles Intl - Toronto Pearson Intl) is currently priced at $199.
Can I find deals for flights from Washington, D.C. to Ontario that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Ontario.
Can I find deals for business class flights from Washington, D.C. to Ontario?
Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Region of Ontario (average of $243). Flying from Washington, D.C. to Region of Ontario in July is currently the most expensive (average of $359). 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

Top 7 airlines flying from Washington, D.C. to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Porter Airlines	Cheapest$103	Average$346	FlexibilityNo cancel fee	On-time52%
Air Canada	Cheapest$116	Average$395	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$127	Average$487	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$145	Average$349	FlexibilityNo cancel fee	On-time71%
Air Transat	Cheapest$169	Average$329	FlexibilityNo cancel fee	On-time50%
Delta	Cheapest$242	Average$412	FlexibilityNo cancel fee	On-timeN/A
WestJet	Cheapest$278	Average$455	FlexibilityNo cancel fee	On-time60%

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$79+ Cheap flights from Washington, D.C. (WAS) 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 6/11. Fares are subject to change and may not be available on all flights or dates of travel.

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

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

Keep the following information in mind while searching for Washington, D.C. to Ontario flight deals. Data was last updated abril 22, 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 Washington, D.C. to Ontario

Cheapest flights from Washington, D.C. to OntarioExplore the most affordable flight options available from Washington, D.C. to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 22, 2025.

Explore the most affordable flight options available from Washington, D.C. to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 22, 2025.

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

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

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

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

Find hourly flight availability from Washington, D.C. 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 abril 22, 2025.

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

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

Reviews of airlines servicing Ontario

See what other customers who have flown with Porter Airlines, Delta and Air Transat from Washington, D.C. to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated 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 Washington, D.C. to Ontario. 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 Washington, D.C. to Region of Ontario one-way?

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

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

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

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

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

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

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

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Alternative routes for Washington, D.C. to Ontario

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Top 7 airlines flying from Washington, D.C. to Ontario

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Cheapest flights from Washington, D.C. to Ontario
Explore the most affordable flight options available from Washington, D.C. to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 22, 2025.