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Cheap flights from Washington, D.C. to Ontario from $63

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Ontario departing on 1/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. to Los Angeles

Cheap round-trip flights

These are some of the best round-trip flight deals from Washington, D.C. to Los Angeles that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Washington, D.C. to Los Angeles.

Cheap last minute flights

Planning a quick getaway from Washington, D.C. to Los Angeles? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Los Angeles, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Washington, D.C. to Los Angeles

Find recent round-trip train or bus tickets from Washington, D.C. to Los Angeles.

All round-trip flight deals to Los Angeles

The cheapest plane tickets to Los Angeles found on KAYAK recently.
1:01 pm - 11:47 pmDCA-ONT
13h 46m1 stop
6:45 am - 4:59 pmONT-DCA
7h 14m1 stop
$128Frontier
Find Deal
Tue, Jan 28 - Sat, Feb 1
6:00 pm - 11:47 pmDCA-ONT
8h 47m1 stop
6:45 am - 4:59 pmONT-DCA
7h 14m1 stop
$135Frontier
Find Deal
Sat, Jan 18 - Thu, Jan 23
6:55 am - 12:25 pmIAD-ONT
8h 30m1 stop
7:00 am - 5:02 pmONT-IAD
7h 02m1 stop
$336Delta
Find Deal
Wed, Dec 11 - Sat, Jan 11
3:50 pm - 10:52 pmDCA-ONT
10h 02m1 stop
7:00 am - 10:00 pmONT-DCA
12h 00m2 stops
$341Delta
Find Deal
Sat, Jan 18 - Sat, Jan 25
6:10 am - 3:29 pmIAD-ONT
12h 19m2 stops
6:00 am - 7:35 pmONT-IAD
10h 35m2 stops
$346American Airlines
Find Deal
Sat, Feb 8 - Tue, Feb 11
6:00 am - 1:58 pmBWI-ONT
10h 58m1 stop
10:00 am - 12:32 amONT-BWI
11h 32m2 stops
$356American Airlines
Find Deal
Wed, Jan 1 - Tue, Jan 7
2:42 pm - 8:29 pmIAD-ONT
8h 47m1 stop
6:00 am - 4:15 pmONT-IAD
7h 15m1 stop
$362United Airlines
Find Deal
Mon, Jan 13 - Tue, Jan 14
7:00 am - 11:35 amBWI-ONT
7h 35m1 stop
11:55 am - 12:15 amONT-BWI
9h 20m1 stop
$371Southwest
Find Deal
Wed, Jan 1 - Tue, Jan 7
6:10 pm - 10:30 pmBWI-ONT
7h 20m1 stop
4:10 pm - 1:25 amONT-BWI
6h 15m1 stop
$394Southwest
Find Deal
Tue, Feb 18 - Sun, Feb 23
6:30 am - 12:40 pmIAD-ONT
9h 10m1 stop
1:43 pm - 11:30 pmONT-IAD
6h 47m1 stop
$436United Airlines
Find Deal
Wed, Dec 25 - Tue, Jan 7
6:00 pm - 11:44 pmDCA-ONT
8h 44m1 stop
$63Frontier
Find Deal
Tue, Jan 14
6:00 pm - 11:47 pmDCA-ONT
8h 47m1 stop
$64Frontier
Find Deal
Sat, Jan 18
6:30 am - 9:02 pmIAD-ONT
17h 32m1 stop
$147American Airlines
Find Deal
Tue, Feb 25
6:59 am - 11:50 amDCA-ONT
7h 51m1 stop
$168Delta
Find Deal
Tue, Jan 14
6:00 am - 10:43 amIAD-ONT
7h 43m1 stop
$168Delta
Find Deal
Tue, Nov 26
5:00 am - 11:58 amIAD-ONT
9h 58m2 stops
$173American Airlines
Find Deal
Tue, Jan 7
2:20 pm - 8:40 pmIAD-ONT
9h 20m1 stop
$188United Airlines
Find Deal
Tue, Mar 4
10:35 am - 5:00 pmBWI-ONT
9h 25m1 stop
$198Southwest
Find Deal
Tue, Jan 21
6:45 am - 2:00 pmIAD-ONT
10h 15m1 stop
$213Southwest
Find Deal
Sun, Dec 15
6:30 am - 2:33 pmIAD-ONT
11h 03m1 stop
$218United Airlines
Find Deal
Tue, Dec 17
1:00 pm - 11:26 amDCA-ONT
25h 26m1 stop
7:45 am - 12:01 pmONT-DCA
25h 16m1 stop
$235Frontier
Find Deal
Tue, Nov 26 - Tue, Dec 3
1:00 pm - 11:26 amDCA-ONT
25h 26m1 stop
7:45 am - 12:01 pmONT-DCA
25h 16m1 stop
$238Frontier
Find Deal
Tue, Nov 26 - Tue, Dec 3
1:32 pm - 8:36 pmIAD-ONT
10h 04m1 stop
10:38 pm - 8:39 amONT-IAD
7h 01m1 stop
$596American Airlines
Find Deal
Sun, Nov 24 - Wed, Dec 4
7:35 pm - 11:50 pmIAD-ONT
7h 15m1 stop
9:25 am - 11:00 pmONT-IAD
10h 35m2 stops
$601Southwest
Find Deal
Sun, Nov 24 - Wed, Dec 4
2:50 pm - 11:35 pmIAD-ONT
11h 45m2 stops
9:25 am - 11:00 pmONT-IAD
10h 35m2 stops
$606Southwest
Find Deal
Sun, Nov 24 - Wed, Dec 4
5:00 am - 12:03 pmDCA-ONT
10h 03m1 stop
11:59 pm - 10:59 amONT-DCA
8h 00m1 stop
$714American Airlines
Find Deal
Fri, Nov 22 - Mon, Dec 2
6:30 pm - 11:36 pmIAD-ONT
8h 06m1 stop
5:40 am - 5:26 pmONT-IAD
8h 46m1 stop
$714Delta
Find Deal
Sat, Nov 23 - Wed, Nov 27
5:10 pm - 10:51 pmDCA-ONT
8h 41m1 stop
6:00 am - 6:22 pmONT-DCA
9h 22m2 stops
$719Delta
Find Deal
Sat, Nov 23 - Wed, Nov 27
8:20 am - 12:40 pmIAD-ONT
7h 20m1 stop
6:00 am - 4:25 pmONT-IAD
7h 25m1 stop
$751United Airlines
Find Deal
Sat, Nov 23 - Fri, Nov 29
4:09 pm - 8:44 pmBWI-ONT
7h 35m1 stop
5:05 am - 3:13 pmONT-BWI
7h 08m1 stop
$852United Airlines
Find Deal
Sat, Nov 23 - Fri, Nov 29

Frontier flights from Washington, D.C. to Ontario

Our best Frontier deals on Washington, D.C. to Ontario flight tickets
Frontier
Jan 28
DCA1:01 pmWashington, D.C. Reagan-National
13h 46m
1 stop
ONT11:47 pmOntario
Feb 1
ONT6:45 amOntario
7h 14m
1 stop
DCA4:59 pmWashington, D.C. Reagan-National
Frontier
Jan 18
DCA6:00 pmWashington, D.C. Reagan-National
8h 47m
1 stop
ONT11:47 pmOntario
Jan 23
ONT6:45 amOntario
7h 14m
1 stop
DCA4:59 pmWashington, D.C. Reagan-National
Frontier
Jan 8
DCA1:01 pmWashington, D.C. Reagan-National
13h 43m
1 stop
ONT11:44 pmOntario
Jan 15
ONT7:45 amOntario
25h 21m
1 stop
DCA12:06 pmWashington, D.C. Reagan-National

Delta flights from Washington, D.C. to Ontario

Our best Delta deals on Washington, D.C. to Ontario flight tickets
Delta
Dec 11
IAD6:55 amWashington, D.C. Dulles Intl
8h 30m
1 stop
ONT12:25 pmOntario
Jan 11
ONT7:00 amOntario
7h 02m
1 stop
IAD5:02 pmWashington, D.C. Dulles Intl
Delta
Jan 18
DCA3:50 pmWashington, D.C. Reagan-National
10h 02m
1 stop
ONT10:52 pmOntario
Jan 25
ONT7:00 amOntario
12h 00m
2 stops
DCA10:00 pmWashington, D.C. Reagan-National
Delta
Dec 11
BWI7:08 amBaltimore/Washington
8h 17m
1 stop
ONT12:25 pmOntario
Jan 7
ONT1:21 pmOntario
7h 13m
1 stop
BWI11:34 pmBaltimore/Washington

See travel insights to Los Angeles from

How to get the cheapest flight ticket from Washington, D.C. to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

January. The cheapest time of year to fly to Ontario from Washington, D.C. is January. Most expensive is June

What is the cheapest day to depart Washington, D.C. for Ontario?

Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Sunday

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

In the afternoon. Washington, D.C. to Ontario flights are approximately 16% more expensive in the evening than in the afternoon

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

Washington, D.C. Reagan-National - Ontario. Fly from Washington, D.C. Reagan-National to Ontario for the best Washington, D.C. - Ontario flight prices

How far in advance should you book Washington, D.C. to Ontario flights?

53 days before. The cheapest time to buy a flight from Washington, D.C. to Ontario is approximately 53 days to departure

Can stopping save me money on Washington, D.C. to Ontario flights?

You could potentially save up to 26% on your flight if you consider stops on a Washington, D.C. to Ontario flight.

How have Washington, D.C. to Ontario flight prices changed over time?

As of November 2024, prices for Washington, D.C. to Ontario flights are approximately 68% more expensive when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Ontario (WAS to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Ontario

Best Price Found

$63

Fastest flight time

6h 55m

Direct flights

None

Airports in Ontario

1 airport
The best one-way flight to Ontario from Washington, D.C. in the past 72 hours is $63. The best round-trip flight deal from Washington, D.C. to Ontario found on momondo in the last 72 hours is $128.
The fastest flight from Washington, D.C. to Ontario takes 6h 55m
There are no direct flights from Washington, D.C. to Ontario. Popular non-direct routes for this connection are Washington, D.C. Reagan-National Airport - Ontario Airport and Baltimore/Washington Airport - Ontario Airport.
There is 1 airport near Ontario: Ontario (ONT)

  • How far is Washington, D.C. to Ontario by plane?

    A flight from Washington, D.C. to Ontario will travel around 2260.6 mi. Flights usually cover this in 7h 10m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Washington, D.C. to Ontario Airport?

    Prices for flights from Washington, D.C. to Ontario Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. to Ontario Airport?

  • How old do you have to be to fly from Washington, D.C. to Ontario Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Washington, D.C. to Ontario?


Best airlines flying from Washington, D.C. to Ontario

Compare and see reviews for airlines that fly from Washington, D.C. to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $148Free CancellationRating
6.1
3,539 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $154Free CancellationRating
6.3
8,175 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $219Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $256Free CancellationRating
8.0
8,759 reviews
Search Delta flights
United AirlinesPriceFrom $257Free CancellationRating
7.4
9,173 reviews
Search United Airlines flights
SouthwestPriceFrom $260Free CancellationRating
8.1
5,015 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Ontario?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Washington, D.C..

Can I find flights from Washington, D.C. to Ontario with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ontario from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to Ontario?

Once you have performed a search for Washington, D.C. to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Ontario right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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