Question 1

Which airports can I use when flying from Washington, D.C. to Ontario?

Accepted Answer

Flights from Washington, D.C. to Ontario may depart from several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Flights usually arrive at Ontario (ONT).

Question 2

What cabin classes can I book on flights from Washington, D.C. to Ontario?

Accepted Answer

Two cabin classes are available on flights from Washington, D.C. to Ontario:

• Economy Class
• First Class

Question 3

Which airports do connecting flights from Washington, D.C. to Ontario pass through?

Accepted Answer

One-stop flights from Washington, D.C. to Ontario most commonly connect through:

• Denver Intl (DEN) - 34% of one-stop connections
• Dallas/Fort Worth (DFW) - 21% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 14% of one-stop connections
• Phoenix Sky Harbor Intl (PHX) - 8% of one-stop connections

Question 4

Can I save money by using flexible dates for flights from Washington, D.C. to Ontario?

Accepted Answer

Yes. Flexible dates can save you up to 39% on flights from Washington, D.C. to Ontario. Wednesday is the cheapest departure day at $365 round-trip on average, while Sunday is the most expensive at $597, a difference of $232.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Question 5

What popular places can I visit in Ontario?

Accepted Answer

Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Question 6

How expensive are last-minute Washington, D.C. to Ontario flights?

Accepted Answer

Last-minute fares on this route (booked within two weeks of departure) run 44% above the $417 route average. Book 25 weeks before departure for the lowest fares.

Question 7

How long is a flight from Washington, D.C. to Ontario?

Accepted Answer

A nonstop flight from Washington, D.C. to Ontario takes 00m, covering 2,258 miles.

Question 8

Do I need a passport to fly from Washington, D.C. to Ontario?

Accepted Answer

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Question 9

How are flight prices from Washington, D.C. to Ontario looking right now?

Accepted Answer

One-way fares from Washington, D.C. to Ontario are currently lower than usual. Average one-way flight prices are about $131, which is 44% below the typical average for this route.

Question 10

How much time can I save by choosing a different layover airport from Washington, D.C. to Ontario?

Accepted Answer

Flying via Houston Hobby (HOU) gives the shortest average 1-stop total travel time at 7h 07m, compared with 7h 37m via Phoenix Sky Harbor Intl (PHX) and 7h 43m via Nashville Intl (BNA).

Question 11

What is the time difference between Washington, D.C. and Ontario?

Accepted Answer

Ontario is 3 hours behind Washington, D.C. (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Question 12

What car rental options are available at Ontario Airport (ONT)?

Accepted Answer

Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:

• Fox
• Thrifty
• Europcar
• Dollar
• Alamo

Question 13

How much should I expect to pay for a Washington, D.C. to Ontario flight?

Accepted Answer

Round-trip flights from Washington, D.C. to Ontario range from $316 to $573, with an average of $417 over the past 12 months. Anything below $316 counts as a good deal.

Question 14

How much is a round-trip flight from Washington, D.C. to Ontario?

Accepted Answer

Round-trip flights from Washington, D.C. to Ontario typically range from $316 to $573. The lowest price found in the past 5 days was $167, on Frontier.

Question 15

What is the cheapest Washington, D.C. to Ontario flight route?

Accepted Answer

Washington, D.C. Reagan-National Airport (DCA) to Ontario (ONT) is the cheapest Washington, D.C. to Ontario route, averaging $388 round-trip. Other Washington, D.C. to Ontario routes average $440, based on KAYAK data over the past 12 months.

Question 16

What's the cheapest day of the week to fly from Washington, D.C. to Ontario?

Accepted Answer

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Washington, D.C. to Ontario. It’s 13% cheaper than the average day, while Sunday is the most expensive, with prices 43% higher.

Question 17

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

Accepted Answer

•January is the cheapest month to fly from Washington, D.C. to Ontario at $255 round-trip.
•December ($621) and March ($501) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 143% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Question 18

When are flights from Washington, D.C. to Ontario the cheapest?

Accepted Answer

Flights from Washington, D.C. to Ontario are cheapest 25 weeks before departure. Booking in this window typically costs about 47% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Question 19

Which airline is the cheapest to fly from Washington, D.C. to Ontario?

Accepted Answer

Frontier ($167) and American Airlines ($231) are the cheapest airlines to fly round-trip from Washington, D.C. to Ontario according to KAYAK data over the last 5 days.

Question 20

What’s the most popular layover airport when flying from Washington, D.C. to Ontario?

Accepted Answer

Denver Intl (DEN) is the most popular layover for the Washington, D.C. to Ontario route. 34% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via DEN.

Question 21

What is the cheapest layover airport when flying from Washington, D.C. to Ontario?

Accepted Answer

Flights via Houston Hobby (HOU) offer the most affordable fares, with an average round-trip price of $236. Based on KAYAK data over the past 3 months.

Question 22

When flying from Washington, D.C. to Ontario which airport offers the shortest layover?

Accepted Answer

Houston Hobby (HOU) had the shortest average connection time for Washington, D.C. to Ontario layovers at 3h 57m over the past 3 months.

Low season	April
High season	December
Cheapest flight	$85

WAS - ONT

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Cheap Flights from Washington, D.C. to Ontario (WAS-ONT)

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Price, demand and travel trends for Washington, D.C. to Ontario flights

How much is a round-trip flight from Washington, D.C. to Ontario?

What is the cheapest Washington, D.C. to Ontario flight route?

What's the cheapest day of the week to fly from Washington, D.C. to Ontario?

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

When are flights from Washington, D.C. to Ontario the cheapest?

Which airline is the cheapest to fly from Washington, D.C. to Ontario?

What’s the most popular layover airport when flying from Washington, D.C. to Ontario?

What is the cheapest layover airport when flying from Washington, D.C. to Ontario?

When flying from Washington, D.C. to Ontario which airport offers the shortest layover?

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