Question 1

What is the cheapest airline to fly from Washington, D.C. to Ontario round-trip?

Accepted Answer

Cheapflights users have booked flights from Washington, D.C. to Ontario round-trip from $176. Users have found that Frontier is 51% cheaper than the other options available to this destination.

Question 2

When is the best time to book a flight from Washington, D.C. to Ontario?

Accepted Answer

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Ontario (average of $238). Flying from Washington, D.C. to Ontario in July is currently the most expensive (average of $338). 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.

January

$268

February

$287

March

$281

April

$256

May

$268

June

$330

July

$338

August

$287

September

$258

October

$238

November

$268

December

$272

Question 3

When is the best time to book a flight from Washington, D.C. to Ontario?

Accepted Answer

The best time to book flights from Washington, D.C. to Ontario is 40 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Question 4

When is the cheapest time to fly from Washington, D.C. to Ontario?

Accepted Answer

Travelers seeking maximum savings on their Washington, D.C. to Ontario flight should consider departing on Tuesday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Question 5

How recently were the Washington, D.C. to Ontario flight deals updated?

Accepted Answer

The Washington, D.C. to Ontario flight deals you see on this page were last updated on 5/18.

Question 6

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

Accepted Answer

American Airlines, Delta and United Airlines are the most popular airlines when flying from Washington, D.C. to Ontario.

Question 7

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

Accepted Answer

The most popular route from Washington, D.C. to Ontario is Washington, D.C. Reagan-National - Ontario. You may also consider Washington, D.C. Dulles Intl - Ontario or Baltimore/Washington - Ontario.

Question 8

Can I find flights from Washington, D.C. to Ontario for under $200 on Cheapflights?

Accepted Answer

Yes, there are multiple flights from Washington, D.C. to Ontario for under $200. The cheapest flight booked recently is on Frontier for just $176, but on average you can expect to pay $190.

Question 9

Are there last-minute flights available from Washington, D.C. to Ontario for under $300?

Accepted Answer

There are currently 20+ open flights from Washington, D.C. to Ontario within the next 7 days for less than $300.

Question 10

What is the cheapest day to fly round-trip from Washington, D.C. to Ontario?

Accepted Answer

Departing on a Monday is a good option for securing a great price. You can expect to save up to 52% when planning your travel around this day of the week.

Question 11

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

Accepted Answer

To save on the cost of your flight from Washington, D.C. to Ontario, book at least 31 days before your planned departure. Booking around this time can save you about 85% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $366 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $592.

Question 12

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

Accepted Answer

September is one of the best times of the year to fly to Ontario from Washington, D.C.. Prices for September average $351 per person but you can even find prices for as low as $106. The most expensive prices can be found in the month of December. Opting for a September flight can save you 24% on your journey compared to booking in December

Question 13

When is the cheapest time to fly from Washington, D.C. to Ontario (WAS - ONT)?

Accepted Answer

It’s typically best to fly out from Washington, D.C. to Ontario in the morning. Doing so could potentially save you 5% on the flight price compared to flying at noon, which is usually more expensive.

Question 14

What airport do you fly into for flights to Ontario from Washington, D.C.?

Accepted Answer

Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Ontario from Washington, D.C.. Booking flights from Washington, D.C. to Ontario (ONT) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. from 5 different airlines.

Question 15

What does IAD to ONT mean?

Accepted Answer

Washington, D.C. Dulles Intl Airport is IAD and Ontario Airport is ONT. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. Ready for more IATA code knowledge? These are related airports for your current travel destination: Baltimore/Washington Airport (BWI), Washington, D.C. Reagan-National Airport (DCA).

Question 16

Can I find deals for flights from Washington, D.C. to Ontario that include extra baggage allowance?

Accepted Answer

The amount of baggage you can bring on your Washington, D.C. to Ontario flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Question 17

Can I find deals on flights from Washington, D.C. to Ontario with specific airlines?

Accepted Answer

Yes, Cheapflights allows you to browse and filter Washington, D.C. to Ontario flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Question 18

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

Accepted Answer

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

Question 19

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

Accepted Answer

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.

Question 20

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

Accepted Answer

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.

Question 21

Can I find deals for flights from Washington, D.C. to Ontario that allow pets onboard?

Accepted Answer

Many airlines flying from Washington, D.C. to Ontario offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Question 22

Can I find deals on last-minute flights from Washington, D.C. to Ontario?

Accepted Answer

Yes, you can often find last-minute deals on Washington, D.C. to Ontario flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

Question 23

How does Cheapflights help users find flights from Washington, D.C. to Ontario?

Accepted Answer

Cheapflights helps you search for flights from Washington, D.C. to Ontario via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Question 24

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Ontario?

Accepted Answer

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

Question 25

Can Cheapflights find flights from Washington, D.C. to Ontario with no change fees?

Accepted Answer

Cheapflights does show flights with no change fees to all users. To see these options for flights from Washington, D.C. to Ontario, users can toggle the no change fees filter when performing a flight search.

Question 26

Can Cheapflights notify me if prices for flights from Washington, D.C. to Ontario become cheaper?

Accepted Answer

Not ready to book yet? You can track prices for flights from Washington, D.C. to Ontario on Cheapflights with our Price Alert feature and get notified when better prices are available.

Popular in	June
Cheapest in	January
Round-trip from	$238
One-way from	$90

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$122	Average$177	FlexibilityNo cancel fee	On-time65%	Search Spirit Airlines flights
Frontier	Cheapest$149	Average$272	FlexibilityNo cancel fee	On-time62%	Search Frontier flights
Delta	Cheapest$206	Average$438	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
American Airlines	Cheapest$227	Average$504	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
United Airlines	Cheapest$277	Average$542	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Cheap flights from Washington, D.C. (WAS) to Ontario (ONT) from $90

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 8/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.

The best prices from Washington, D.C. to Ontario are usually found in January or September, booked 40 days in advance, depart on a Tuesday or Friday and return on a Thursday

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

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What is the cheapest day to fly round-trip from Washington, D.C. to Ontario?

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

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

When is the cheapest time to fly from Washington, D.C. to Ontario (WAS - ONT)?

Cheap Frontier flights from Washington, D.C. to Ontario

Peruse some of the lowest-priced Frontier flights we've found from Washington, D.C. to Ontario. It's recommended that users confirm their flight details before booking.

Cheap American Airlines flights from Washington, D.C. to Ontario

Some of the lowest-priced American Airlines flights we've found at this time heading from Washington, D.C. to Ontario. Deals are refreshing constantly so come back soon for more options.

Cheap Washington, D.C. to Ontario flights in May & June 2024

Find cheap flight options from Washington, D.C. to Ontario specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,650,061 searches. Prices were last updated on May 18, 2024.

The lowest fares we've come across on flights traveling from Washington, D.C. to Ontario in May and June 2024. For more flight deals, be sure to check back very soon.

Washington, D.C. to Ontario 2024 flight deals

Discover exclusive flight deals for travel between Washington, D.C. and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,650,061 searches. Data last updated May 18, 2024.

The lowest fares we've come across on flights traveling from Washington, D.C. to Ontario in May and June 2024. For more flight deals, be sure to check back very soon.

Washington, D.C. to Ontario flights leaving soon

Book one of these great deals on flights from Washington, D.C. to Ontario. Tip: verify your flight details before completing your reservation.

One-way flights to Ontario from Washington, D.C.

If you're seeking multiple options on one-way flights from Washington, D.C. to Ontario, be sure to check out these deals, which are updated often. Those needing a return flight from Washington, D.C. to Ontario can use the search form above.

Find flights from Washington, D.C. to Ontario within your budget

When is the best time to book a flight from Washington, D.C. to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Ontario. Price data was last updated on May 10, 2024.

The best time to book flights from Washington, D.C. to Ontario is 40 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

When is the cheapest time to fly from Washington, D.C. to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Ontario. Price data was last updated on May 12, 2024.

Average price of flights to Ontario by month

Plan your trip from Washington, D.C. to Ontario by taking into account the cheapest months to travel. The average price of a one-way flight from Washington, D.C. to Ontario is currently $101 while a round-trip flight costs $241. Price data was last updated on May 12, 2024.

Temperature and rainfall in Ontario by month

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

Reviews of airlines servicing Ontario

See what other customers who have flown with Frontier, American Airlines and United Airlines from Washington, D.C. to Ontario have to say. In addition to providing an overall rating, users have also rated airlines 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 airport do you fly into for flights to Ontario from Washington, D.C.?

Can I find flights from Washington, D.C. to Ontario for under $200 on Cheapflights?

Are there last-minute flights available from Washington, D.C. to Ontario for under $300?

What is the cheapest airline to fly from Washington, D.C. to Ontario round-trip?

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

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

What does IAD to ONT mean?

Can I find deals for flights from Washington, D.C. to Ontario that include extra baggage allowance?

Can I find deals on flights from Washington, D.C. to Ontario with specific airlines?

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?

Can I find deals for flights from Washington, D.C. to Ontario that allow pets onboard?

Can I find deals on last-minute flights from Washington, D.C. to Ontario?

How recently were the Washington, D.C. to Ontario flight deals updated?

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Top 5 airlines flying from Washington, D.C. to Ontario

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