Question 1

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

Accepted Answer

Cheapflights users have booked flights from Ontario to Washington, D.C. round-trip from $176. Users have found that Frontier is 52% cheaper than the other options available to this destination.

Question 2

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

Accepted Answer

Currently, September is the cheapest month in which you can book a flight from Ontario to Washington, D.C. (average of $280). Flying from Ontario to Washington, D.C. in June is currently the most expensive (average of $397). 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

$308

February

$303

March

$358

April

$337

May

$336

June

$397

July

$376

August

$298

September

$280

October

$303

November

$328

December

$293

Question 3

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

Accepted Answer

The price you pay for your flight from Ontario to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 43 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 4

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

Accepted Answer

Travelers seeking maximum savings on their Ontario to Washington, D.C. flight should consider departing on Friday afternoons 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 Ontario to Washington, D.C. flight deals updated?

Accepted Answer

The Ontario to Washington, D.C. flight deals you see on this page were last updated on 5/16.

Question 6

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

Accepted Answer

The most popular airlines flying from Ontario to Washington, D.C. are American Airlines, Alaska Airlines and Delta. Something to consider prior to booking your flight.

Question 7

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

Accepted Answer

When deciding which route to take from Ontario to Washington, D.C. consider Ontario - Washington, D.C. Dulles Intl, Ontario - Washington, D.C. Reagan-National or Ontario - Baltimore/Washington as they are the most popular.

Question 8

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

Accepted Answer

Yes, there are multiple flights from Ontario to Washington, D.C. for under $200. The cheapest flight booked recently is on Frontier for just $176, but on average you can expect to pay $193.

Question 9

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

Accepted Answer

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

Question 10

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

Accepted Answer

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Washington, D.C.. Check prices with Cheapflights to find a great deal for your trip.

Question 11

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

Accepted Answer

Find a great deal and save up to 67% by booking at least 29 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Ontario to Washington, D.C. within the next two weeks, with the cheapest ticket starting at $376.

Question 12

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

Accepted Answer

The best pricing can be found in the month of September. Prices to Washington, D.C. from Ontario average $358. You can even find prices in September for less than $358, as users have found deals to Washington, D.C. from as low as $109. The month of June appears to be one of the more expensive times to travel to Washington, D.C. from Ontario. Flying in the targeted month can save you up to 25%.

Question 13

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

Accepted Answer

It’s typically best to fly out from Ontario to Washington, D.C. in the afternoon. Doing so could potentially save you 36% on the flight price compared to flying at noon, which is usually more expensive.

Question 14

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

Accepted Answer

If you book a flight to Washington, D.C. from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Ontario to Washington, D.C. per day from 6 different airlines.

Question 15

What does ONT to IAD mean?

Accepted Answer

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Ontario Airport to Washington, D.C. Dulles Intl Airport flight would often be abbreviated as a ONT to IAD flight. Baltimore/Washington Airport (BWI), Washington, D.C. Reagan-National Airport (DCA) are some additional IATA codes for airports related to your trip.

Question 16

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

Accepted Answer

The amount of baggage you can bring on your Ontario to Washington, D.C. 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 Ontario to Washington, D.C. with specific airlines?

Accepted Answer

Yes, Cheapflights allows you to browse and filter Ontario to Washington, D.C. 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 Ontario to Washington, D.C. that include hotel bookings?

Accepted Answer

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

Question 19

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

Accepted Answer

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..

Question 20

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

Accepted Answer

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.

Question 21

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

Accepted Answer

Many airlines flying from Ontario to Washington, D.C. 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 Ontario to Washington, D.C.?

Accepted Answer

Yes, you can often find last-minute deals on Ontario to Washington, D.C. 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 Ontario to Washington, D.C.?

Accepted Answer

Cheapflights helps you search for flights from Ontario to Washington, D.C. 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 Ontario to Washington, D.C.?

Accepted Answer

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

Question 25

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

Accepted Answer

Yes, we can. To see specific flights from Ontario to Washington, D.C. with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Question 26

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

Accepted Answer

Yes, Cheapflights offers price alerts on Ontario to Washington, D.C. 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.

Popular in	January
Cheapest in	February
Round-trip from	$235
One-way from	$90

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$118	Average$274	FlexibilityNo cancel fee	On-time65%	Search Spirit Airlines flights
Alaska Airlines	Cheapest$132	Average$295	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
Frontier	Cheapest$147	Average$280	FlexibilityNo cancel fee	On-time62%	Search Frontier flights
United Airlines	Cheapest$189	Average$581	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest$193	Average$498	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Delta	Cheapest$256	Average$422	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights

Sunday	0daily flights
Monday	1daily flight
Tuesday	1daily flight
Wednesday	1daily flight
Thursday	1daily flight
Friday	1daily flight
Saturday	0daily flights

Cheap flights from Ontario (ONT) to Washington, D.C. (WAS) 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 8/13. 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 Ontario to Washington, D.C. are usually found in February or April, booked 43 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

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

Popular in

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Round-trip from

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

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

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

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

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

Consider these cheap American Airlines flights we've found departing from Ontario to Washington, D.C.. Deals update often to give you more flight options matching your criteria

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

To aid your search, here are some of the cheapest Delta flights we've found from Ontario to Washington, D.C.. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.

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

Find cheap flight options from Ontario to Washington, D.C. specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on mayo 16, 2024.

These are some of the most attractive deals on flights from Ontario to Washington, D.C. in 2024. If these deals don't appeal to you, be sure to come back soon for more options.

Ontario to Washington, D.C. 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Washington, D.C. in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated mayo 16, 2024.

These are some of the most attractive deals on flights from Ontario to Washington, D.C. in 2024. If these deals don't appeal to you, be sure to come back soon for more options.

Ontario to Washington, D.C. flights leaving soon

Check out these flights departing soon from Ontario to Washington, D.C.. Users should examine the flight details to ensure there are no surprises.

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

Some of the best available deals we've found on one-way flights from Ontario to Washington, D.C.. Users in need of a round-trip flight from Ontario to Washington, D.C. instead should update the search form at the top of page.

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

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

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

The price you pay for your flight from Ontario to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 43 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

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

Average price of flights to Washington, D.C. by month

Plan your trip from Ontario to Washington, D.C. by taking into account the cheapest months to travel. The average price of a one-way flight from Ontario to Washington, D.C. is currently $98 while a round-trip flight costs $255. Price data was last updated on May 12, 2024.

Temperature and rainfall in Washington, D.C. by month

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

Reviews of airlines servicing Washington, D.C.

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

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

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

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

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

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

What does ONT to IAD mean?

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

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

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.?

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

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

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

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Alternative routes for Ontario to Washington, D.C.See prices for flight routes from nearby airports that may be better suited for you.

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

Popular flight searches

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Search flights from Ontario to Washington, D.C. by cabin class

Find flights from Ontario to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

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

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User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations

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

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

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

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

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Alternative routes for Ontario to Washington, D.C.
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