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

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 6/6.

Question 3

How far ahead should I 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

What is the cheapest month 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 $278). Flying from Ontario to Washington, D.C. in June is currently the most expensive (average of $382). 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.

Question 5

What is the cheapest day 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 6

E

Accepted Answer

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.

Question 7

E

Accepted Answer

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).

Question 8

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. Reagan-National, Ontario - Washington, D.C. Dulles Intl or Ontario - Baltimore/Washington as they are the most popular.

Question 9

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 10

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 $183.

Question 11

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 12

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 13

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 61% 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 14

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 $357. You can even find prices in September for less than $357, 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 21%.

Question 15

What is the cheapest time of day to fly from ONT to 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 41% on the flight price compared to flying at noon, which is usually more expensive.

Question 16

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 17

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 18

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 19

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 20

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 21

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 22

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 23

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 24

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.

Popular in	January
Cheapest in	February
Round-trip from	$234
One-way from	$90

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$121	Average$253	FlexibilityNo cancel fee	On-time65%
Alaska Airlines	Cheapest$132	Average$314	FlexibilityNo cancel fee	On-time75%
Frontier	Cheapest$148	Average$278	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$192	Average$488	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$256	Average$422	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$262	Average$568	FlexibilityNo cancel fee	On-time69%

0%of flight departures	Early morningMidnight to 6 am
0%of flight departures	Morning6 am to noon
100%of flight departures	AfternoonNoon to 6 pm
0%of flight departures	Evening6 pm to midnight

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 8/15. 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 Wednesday or Thursday and return on a Tuesday

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

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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.?

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

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

Find cheap flight options from Ontario to Washington, D.C. specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Prices were last updated on junio 6, 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 3,050,429 searches. Data last updated junio 6, 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

How far ahead should I 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 31, 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.

What is the cheapest day 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 June 2, 2024.

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.

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 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?

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

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

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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.

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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.

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

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 junio 6, 2024.

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

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