Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. to Los Angeles from $60

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 Los Angeles departing on 2/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington, D.C. to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
2:00 pm - 11:24 pm
DCA
-
ONT
12h 24m1 stop
Frontier Logo
6:20 am - 4:59 pm
ONT
-
DCA
7h 39m1 stop
$142Frontier
sáb., ene. 24 - vie., ene. 30
Frontier Logo
2:00 pm - 11:24 pm
DCA
-
ONT
12h 24m1 stop
Frontier Logo
6:20 am - 4:59 pm
ONT
-
DCA
7h 39m1 stop
$148Frontier
sáb., ene. 24 - lun., ene. 26
Frontier Logo
10:50 am - 4:26 pm
IAD
-
ONT
8h 36m1 stop
Frontier Logo
6:56 pm - 9:54 am
ONT
-
IAD
11h 58m1 stop
$148Frontier
dom., feb. 1 - jue., feb. 26
Frontier Logo
2:00 pm - 11:24 pm
DCA
-
ONT
12h 24m1 stop
Frontier Logo
6:20 am - 9:59 pm
ONT
-
DCA
12h 39m1 stop
$149Frontier
sáb., ene. 24 - vie., ene. 30
Frontier Logo
8:59 am - 3:07 pm
DCA
-
ONT
9h 08m1 stop
Frontier Logo
7:15 am - 9:59 pm
ONT
-
DCA
11h 44m1 stop
$150Frontier
mié., ene. 21 - sáb., ene. 24
American Airlines Logo
7:00 am - 12:03 pm
DCA
-
ONT
8h 03m1 stop
American Airlines Logo
9:59 am - 8:15 pm
ONT
-
DCA
7h 16m1 stop
$169American Airlines
mié., ene. 28 - mié., feb. 11
American Airlines Logo
5:26 pm - 10:48 pm
IAD
-
ONT
8h 22m1 stop
American Airlines Logo
10:58 am - 9:17 pm
ONT
-
IAD
7h 19m1 stop
$169American Airlines
mié., ene. 28 - mié., feb. 11
Multiple Airlines Logo
8:00 am - 2:27 pm
BWI
-
ONT
33h 27m2 stops
Multiple Airlines Logo
1:46 pm - 10:27 am
ONT
-
BWI
17h 41m1 stop
$175Multiple Airlines
mié., ene. 28 - lun., feb. 2
Southwest Logo
9:05 am - 5:10 pm
IAD
-
ONT
11h 05m2 stops
Southwest Logo
5:55 am - 4:50 pm
ONT
-
IAD
7h 55m1 stop
$189Southwest
mié., ene. 21 - mar., ene. 27
Southwest Logo
4:30 pm - 9:05 pm
IAD
-
ONT
7h 35m1 stop
Southwest Logo
5:50 am - 2:55 pm
ONT
-
IAD
6h 05m1 stop
$192Southwest
mié., ene. 7 - sáb., ene. 10

Frontier flights from Washington, D.C. to Ontario

Our best Frontier deals on Washington, D.C. to Ontario flight tickets
Frontier
Jan 24
DCA2:00 pmWashington, D.C. Reagan-National
12h 24m
1 stop
ONT11:24 pmOntario
Jan 30
ONT6:20 amOntario
7h 39m
1 stop
DCA4:59 pmWashington, D.C. Reagan-National
$142
Find similar
Frontier
Jan 24
DCA6:00 pmWashington, D.C. Reagan-National
8h 24m
1 stop
ONT11:24 pmOntario
Jan 29
ONT6:20 amOntario
12h 39m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$148
Find similar
Frontier
Jan 24
DCA2:00 pmWashington, D.C. Reagan-National
12h 24m
1 stop
ONT11:24 pmOntario
Jan 30
ONT6:20 amOntario
12h 39m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$149
Find similar

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

Our best American Airlines deals on Washington, D.C. to Ontario flight tickets
American Airlines
Jan 28
DCA7:00 amWashington, D.C. Reagan-National
8h 03m
1 stop
ONT12:03 pmOntario
Feb 11
ONT9:59 amOntario
7h 16m
1 stop
DCA8:15 pmWashington, D.C. Reagan-National
$169
Find similar
American Airlines
Jan 21
IAD6:00 amWashington, D.C. Dulles Intl
11h 18m
1 stop
ONT2:18 pmOntario
Jan 27
ONT6:00 amOntario
7h 31m
1 stop
IAD4:31 pmWashington, D.C. Dulles Intl
$172
Find similar
American Airlines
Jan 28
DCA9:35 amWashington, D.C. Reagan-National
9h 30m
2 stops
ONT4:05 pmOntario
Feb 11
ONT7:16 amOntario
9h 28m
1 stop
DCA7:44 pmWashington, D.C. Reagan-National
$174
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated diciembre 4, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

sáb. 1/24

2:00 pm-11:24 pm

1 stop12h 24m

Ontario

vie. 1/30

6:20 am-4:59 pm

1 stop7h 39m

$142

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

sáb. 1/24

2:00 pm-11:24 pm

1 stop12h 24m

Ontario

lun. 1/26

6:20 am-4:59 pm

1 stop7h 39m

$148

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

dom. 2/1

10:50 am-4:26 pm

1 stop8h 36m

Ontario

jue. 2/26

6:56 pm-9:54 am

1 stop11h 58m

$148

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

sáb. 1/24

2:00 pm-11:24 pm

1 stop12h 24m

Ontario

vie. 1/30

6:20 am-9:59 pm

1 stop12h 39m

$149

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

mié. 1/21

8:59 am-3:07 pm

1 stop9h 08m

Ontario

sáb. 1/24

7:15 am-9:59 pm

1 stop11h 44m

$150

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

mié. 1/28

7:00 am-12:03 pm

1 stop8h 03m

Ontario

mié. 2/11

9:59 am-8:15 pm

1 stop7h 16m

$169

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

mié. 1/28

5:26 pm-10:48 pm

1 stop8h 22m

Ontario

mié. 2/11

10:58 am-9:17 pm

1 stop7h 19m

$169

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

mié. 1/28

8:00 am-2:27 pm

2 stops33h 27m

Ontario

lun. 2/2

1:46 pm-10:27 am

1 stop17h 41m

$175

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

mié. 1/21

9:05 am-5:10 pm

2 stops11h 05m

Ontario

mar. 1/27

5:55 am-4:50 pm

1 stop7h 55m

$189

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

mié. 1/7

4:30 pm-9:05 pm

1 stop7h 35m

Ontario

sáb. 1/10

5:50 am-2:55 pm

1 stop6h 05m

$192

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 to Ontario?

In general, April is the cheapest month to fly from Washington, D.C. to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $326. If you aren’t able to travel during the month of April, then book flights to Ontario from Washington, D.C. during October instead. Flights to Ontario in October, while not as cheap as those in April, still average around $334.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Tuesday when prices can be found for as low as $323. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to Ontario for around $480.

What is the cheapest time of day to depart on your flight to Ontario?

In the afternoon is the cheapest time of day to fly from Washington, D.C. to Ontario when you can find flight prices for as low as $366. Flying to Ontario in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $431 on average. Flights to Ontario from Washington, D.C. in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Fly from Baltimore/Washington to Ontario for the best Washington, D.C. - Ontario flight prices

What cabin class options are available on Washington, D.C. to Ontario flights?

There is only 1 cabin class available to choose from on Washington, D.C. to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 59% 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 December 2025, prices for Washington, D.C. to Ontario flights are approximately 3% cheaper 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

Fastest flight time

5h 35m

Direct flights

Mon, Tue, Wed, Fri, Sat and Sun

Airports in Ontario

1 airport
The fastest flight from Washington, D.C. to Ontario takes 5h 35m
Direct flights go from Washington, D.C. to Ontario on Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.
There is 1 airport near Ontario: Ontario (ONT)
Search flight deals

  • 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 15m, 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 plane model from Washington, D.C. to Ontario?

  • 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 $173Free CancellationRating
5.8
3,091 reviews
Search Frontier flights
DeltaPriceFrom $213Free CancellationRating
7.9
8,011 reviews
Search Delta flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
United AirlinesPriceFrom $284Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
SouthwestPriceFrom $304Free CancellationRating
8.0
4,250 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.

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
sáb. 1/3
sáb. 1/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States