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Cheap flights from District of Columbia to Los Angeles from $72

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to Los Angeles departing on 1/13. 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

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Find the cheapest flights from District of Columbia to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:00 pm - 3:06 pmDCA-ONT
24h 06m1 stop
Frontier Logo
5:18 pm - 1:06 pmONT-DCA
16h 48m2 stops
$291Frontier
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Sat, Dec 6 - Sun, Dec 14
Frontier Logo
6:00 pm - 11:57 pmDCA-ONT
8h 57m1 stop
Frontier Logo
12:04 pm - 9:59 pmONT-DCA
6h 55m1 stop
$292Frontier
Find Deal
Thu, Nov 27 - Thu, Dec 4
Frontier Logo
8:00 am - 7:53 pmDCA-ONT
14h 53m2 stops
Frontier Logo
6:20 am - 5:00 pmONT-DCA
7h 40m1 stop
$294Frontier
Find Deal
Fri, Jan 23 - Mon, Feb 2
Frontier Logo
8:00 am - 10:39 pmDCA-ONT
17h 39m1 stop
Frontier Logo
6:00 am - 1:05 pmONT-DCA
28h 05m1 stop
$295Frontier
Find Deal
Wed, Feb 11 - Sun, Feb 15
Alaska Airlines Logo
6:04 pm - 3:08 pmIAD-ONT
24h 04m1 stop
Alaska Airlines Logo
4:03 pm - 4:26 pmONT-IAD
21h 23m1 stop
$306Alaska Airlines
Find Deal
Fri, Jan 9 - Tue, Jan 13
Delta Logo
7:30 am - 1:56 pmIAD-ONT
9h 26m1 stop
Delta Logo
7:30 am - 11:10 pmONT-IAD
12h 40m1 stop
$307Delta
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Thu, Jan 8 - Fri, Jan 16
United Airlines Logo
2:12 pm - 8:50 pmIAD-ONT
9h 38m1 stop
United Airlines Logo
1:53 pm - 1:08 amONT-IAD
8h 15m1 stop
$319United Airlines
Find Deal
Wed, Feb 18 - Sat, Feb 21
Southwest Logo
9:05 am - 5:10 pmIAD-ONT
11h 05m2 stops
Southwest Logo
5:25 am - 3:45 pmONT-IAD
7h 20m1 stop
$324Southwest
Find Deal
Wed, Feb 18 - Sat, Feb 21
Delta Logo
7:05 am - 12:34 pmIAD-ONT
8h 29m1 stop
Delta Logo
1:29 pm - 11:29 pmONT-IAD
7h 00m1 stop
$333Delta
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Sat, Dec 6 - Sat, Dec 13
Alaska Airlines Logo
6:04 pm - 10:59 amIAD-ONT
19h 55m1 stop
Alaska Airlines Logo
4:03 pm - 4:26 pmONT-IAD
21h 23m1 stop
$345Alaska Airlines
Find Deal
Thu, Jan 8 - Tue, Jan 13

Frontier flights from District of Columbia to Ontario

Our best Frontier deals on District of Columbia to Ontario flight tickets
Frontier
Dec 6
DCA6:00 pmWashington, D.C. Reagan-National
24h 06m
1 stop
ONT3:06 pmOntario
Dec 14
ONT5:18 pmOntario
16h 48m
2 stops
DCA1:06 pmWashington, D.C. Reagan-National
$291
Find similar
Frontier
Dec 5
DCA2:00 pmWashington, D.C. Reagan-National
27h 25m
1 stop
ONT2:25 pmOntario
Dec 7
ONT4:01 pmOntario
18h 05m
1 stop
DCA1:06 pmWashington, D.C. Reagan-National
$292
Find similar
Frontier
Jan 23
DCA8:00 amWashington, D.C. Reagan-National
14h 53m
2 stops
ONT7:53 pmOntario
Feb 2
ONT6:20 amOntario
7h 40m
1 stop
DCA5:00 pmWashington, D.C. Reagan-National
$294
Find similar

Alaska Airlines flights from District of Columbia to Ontario

Our best Alaska Airlines deals on District of Columbia to Ontario flight tickets
Alaska Airlines
Jan 9
IAD6:04 pmWashington, D.C. Dulles Intl
24h 04m
1 stop
ONT3:08 pmOntario
Jan 12
ONT6:00 amOntario
31h 26m
1 stop
IAD4:26 pmWashington, D.C. Dulles Intl
$306
Find similar
Alaska Airlines
Jan 8
IAD6:04 pmWashington, D.C. Dulles Intl
19h 55m
1 stop
ONT10:59 amOntario
Jan 13
ONT4:03 pmOntario
21h 23m
1 stop
IAD4:26 pmWashington, D.C. Dulles Intl
$345
Find similar
Alaska Airlines
Jan 6
DCA5:00 pmWashington, D.C. Reagan-National
10h 14m
1 stop
ONT12:14 amOntario
Jan 13
ONT7:56 pmOntario
17h 13m
2 stops
DCA4:09 pmWashington, D.C. Reagan-National
$350
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 November 23, 2025.
Use the filters below to find and compare flights from District of Columbia 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

Sat 12/6

6:00 pm-3:06 pm

1 stop24h 06m

Ontario

Sun 12/14

5:18 pm-1:06 pm

2 stops16h 48m

$291

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Thu 11/27

6:00 pm-11:57 pm

1 stop8h 57m

Ontario

Thu 12/4

12:04 pm-9:59 pm

1 stop6h 55m

$292

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Fri 1/23

8:00 am-7:53 pm

2 stops14h 53m

Ontario

Mon 2/2

6:20 am-5:00 pm

1 stop7h 40m

$294

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Wed 2/11

8:00 am-10:39 pm

1 stop17h 39m

Ontario

Sun 2/15

6:00 am-1:05 pm

1 stop28h 05m

$295

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Fri 1/9

6:04 pm-3:08 pm

1 stop24h 04m

Ontario

Tue 1/13

4:03 pm-4:26 pm

1 stop21h 23m

$306

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Thu 1/8

7:30 am-1:56 pm

1 stop9h 26m

Ontario

Fri 1/16

7:30 am-11:10 pm

1 stop12h 40m

$307

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Wed 2/18

2:12 pm-8:50 pm

1 stop9h 38m

Ontario

Sat 2/21

1:53 pm-1:08 am

1 stop8h 15m

$319

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Wed 2/18

9:05 am-5:10 pm

2 stops11h 05m

Ontario

Sat 2/21

5:25 am-3:45 pm

1 stop7h 20m

$324

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Sat 12/6

7:05 am-12:34 pm

1 stop8h 29m

Ontario

Sat 12/13

1:29 pm-11:29 pm

1 stop7h 00m

$333

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Thu 1/8

6:04 pm-10:59 am

1 stop19h 55m

Ontario

Tue 1/13

4:03 pm-4:26 pm

1 stop21h 23m

$345

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from District of Columbia 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 District of Columbia 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 District of Columbia 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 District of Columbia 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 District of Columbia 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 District of Columbia in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest District of Columbia to Ontario flight route?

Fly from Baltimore/Washington to Ontario for the best District of Columbia - Ontario flight prices

What cabin class options are available on District of Columbia to Ontario flights?

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

Cheap District of Columbia to Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Ontario

Direct flights

None
There are no direct flights from District of Columbia to Ontario. There are no popular flight routes from District of Columbia to Ontario.
Search flight deals

  • When did momondo last update prices for flights from District of Columbia to Ontario Airport?

    Prices for flights from District of Columbia to Ontario Airport are updated daily.

  • How many operators does momondo search for flights from District of Columbia to Ontario Airport?

  • How old do you have to be to fly from District of Columbia to Ontario Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia to Ontario Airport.

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

    The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from District of Columbia to Ontario

Compare and see reviews for airlines that fly from District of Columbia to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $168Free CancellationRating
5.8
3,099 reviews
Search Frontier flights
DeltaPriceFrom $213Free CancellationRating
7.9
7,997 reviews
Search Delta flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
11,046 reviews
Search American Airlines flights
United AirlinesPriceFrom $284Free CancellationRating
7.4
9,036 reviews
Search United Airlines flights
SouthwestPriceFrom $304Free CancellationRating
8.0
4,252 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Ontario?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from District of Columbia to Ontario. momondo saves you time and could save you money on your trip.

Can I find flights from District of Columbia to Ontario with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for District of Columbia to Ontario flights to just show those with flexible booking policies.

How can momondo help me find flights from District of Columbia to Ontario?

Once you have performed a search for District of Columbia 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 District of Columbia to Ontario right now. Can momondo alert me if prices change?

Price alerts on flights to Ontario from District of Columbia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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