Question 1

Which is the best airline for flights from Ontario to Washington, D.C., Southwest or Delta?

Accepted Answer

The two airlines most popular with KAYAK users for flights from Ontario to Washington, D.C. are Southwest and Delta. With an average price for the route of $492 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $471 and an overall rating of 7.8.

Question 2

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

Accepted Answer

A direct flight to Washington, D.C. will take on average 4h 45m to travel the 2,258 miles flying distance from Ontario.

Question 3

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

Accepted Answer

In the last 5 days, the lowest price for a flight from Ontario to Washington, D.C. was $78 for a one-way ticket and $226 for a round-trip.

Question 4

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

Accepted Answer

No

Question 5

Which airports will I be using when flying from Ontario to Washington, D.C.?

Accepted Answer

When flying out of Ontario you will be using Ontario. You will be landing at one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

Question 6

Which airlines fly non-stop between Ontario and Washington, D.C.?

Accepted Answer

There are 4 airlines that fly nonstop from Ontario to Washington, D.C.. They are: Delta, JetBlue, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Delta at $208 for a round-trip flight. On average, the best prices for this route can be found at Delta.

Question 7

Which airlines fly non-stop between Ontario and Washington, D.C.?

Accepted Answer

There are 4 airlines that fly nonstop from Ontario to Washington, D.C.. They are: Delta, JetBlue, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Delta at $208 for a round-trip flight. On average, the best prices for this route can be found at Delta.

Question 8

Which airlines offer Wi-Fi service onboard planes from Ontario to Washington, D.C.?

Accepted Answer

JetBlue, Alaska Airlines, Delta, and Hawaiian Airlines offer inflight Wi-Fi service on the Ontario to Washington, D.C. flight route.

Question 9

Which aircraft models fly most regularly from Ontario to Washington, D.C.?

Accepted Answer

The Airbus A318/A319/A320/A321 is the aircraft model that flies most regularly on the Ontario to Washington, D.C. flight route.

Question 10

Which airline alliances offer flights from Ontario to Washington, D.C.?

Accepted Answer

SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Ontario and Washington, D.C., with SkyTeam being the most commonly used for this route.

Question 11

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

Accepted Answer

Denver is the most popular layover city among KAYAK users traveling from Ontario to Washington, D.C..

Question 12

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

Accepted Answer

The cheapest month for flights from Ontario to Washington, D.C. is September, where tickets cost $323 (return) on average. On the other hand, the most expensive months are June and November, where the average cost of round-trip tickets is $530 and $499 respectively.

Question 13

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

Accepted Answer

The cheapest month for flights from Ontario to Washington, D.C. is September, where tickets cost $323 (return) on average. On the other hand, the most expensive months are June and November, where the average cost of round-trip tickets is $530 and $499 respectively.

Question 14

How does KAYAK find such low prices on flights from Ontario to Washington, D.C.?

Accepted Answer

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Washington, D.C..

Question 15

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Washington, D.C.?

Accepted Answer

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

Question 16

What is the Hacker Fare option on flights from Ontario to Washington, D.C.?

Accepted Answer

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Ontario with another airline.

Question 17

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Washington, D.C.?

Accepted Answer

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Question 18

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

Accepted Answer

Flights via Las Vegas (LAS) offer the most affordable fares, with an average round-trip price of $315.

Question 19

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

Accepted Answer

Denver (DEN) is the top choice – 52% of KAYAK users who clicked on 1-stop flights from Ontario to Washington, D.C. picked an itinerary connecting there.

Question 20

Which layover airport has the quickest connection when flying from Ontario to Washington, D.C.?

Accepted Answer

If you prefer a quick connection, Chicago (ORD) often has the shortest layovers from Ontario to Washington, D.C., with an average of 0h 58m.

Question 21

Which layover airport offers the shortest total travel time from Ontario to Washington, D.C.?

Accepted Answer

Consider flying via Phoenix (PHX) for the shortest journey. The average one-way travel time for flights connecting there is 6h 55m.

Question 22

Which cabin class options are there for flights between Ontario and Washington, D.C.?

Accepted Answer

There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 23

Which cabin class options are there for flights between Ontario and Washington, D.C.?

Accepted Answer

There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 24

Which airlines provide the cheapest flights from Ontario to Washington, D.C.?

Accepted Answer

In the past 5 days, the cheapest round-trip tickets from Ontario to Washington, D.C. were found on Frontier ($226) and United Airlines ($261).

Question 25

Which airlines provide the cheapest flights from Ontario to Washington, D.C.?

Accepted Answer

In the past 5 days, the cheapest round-trip tickets from Ontario to Washington, D.C. were found on Frontier ($226) and United Airlines ($261).

Question 26

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

Accepted Answer

The cheapest return flight from Ontario to Washington, D.C. costs $541 on the route between Ontario (ONT) and Baltimore (BWI). It is also the most popular route.

Question 27

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

Accepted Answer

The cheapest return flight from Ontario to Washington, D.C. costs $541 on the route between Ontario (ONT) and Baltimore (BWI). It is also the most popular route.

Question 28

Can I save money by flying with a layover from Ontario to Washington, D.C.?

Accepted Answer

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $480 on average.

Question 29

Can I save money by flying with a layover from Ontario to Washington, D.C.?

Accepted Answer

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $480 on average.

Question 30

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

Accepted Answer

Flight prices are below average for this route right now.Flights to Washington, D.C. from Ontario usually cost between $240 and $444 in September.
The lowest price found in the past 5 days was $226 on Frontier (Sep 23-Sep 28).

Question 31

What are the most popular airlines flying to Washington, D.C.?

Accepted Answer

The most popular airline among KAYAK users flying to Washington, D.C. is United Airlines, followed by American Airlines and Southwest.

Low season	January
High season	July
Cheapest flight	$78

ONT - WAS

$78 Find Cheap Flights from Ontario to Washington, D.C. - Compare and Save

Everything you should know

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

Recent round-trip flight deals from Ontario to Washington, D.C.

Recent one-way flight deals from Ontario to Washington, D.C.

Recent last minute flight deals from Ontario to Washington, D.C.

KAYAK's insights & trends for Ontario to Washington, D.C. flights

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

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

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

Can I save money by flying with a layover from Ontario to Washington, D.C.?

Which airlines provide the cheapest flights from Ontario to Washington, D.C.?

Which airlines fly non-stop between Ontario and Washington, D.C.?

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

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

Which layover airport offers the shortest total travel time from Ontario to Washington, D.C.?

Which layover airport has the quickest connection when flying from Ontario to Washington, D.C.?

Which cabin class options are there for flights between Ontario and Washington, D.C.?

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

Good to know

Low season

High season

Cheapest flight

When to book flights from Ontario to Washington, D.C.

FAQs for booking flights from Ontario to Washington, D.C.

KAYAK’s top tips for finding a cheap flight from Ontario to Washington, D.C.

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

Information on your arrival and departure airports

Cabin class types available on flights from Ontario to Washington, D.C.

Complete your trip to Washington, D.C. with a hotel stay or car rental

Find direct flights to and from Ontario and Washington, D.C.

Flights to other popular destinations

Flights from domestic origins to Washington, D.C.

Choose which airport to fly into in Washington, D.C.

Find deals for your return flight