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Cheap flights from District of Columbia to Los Angeles from $79

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 5/5. 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 - 11:49 pm
DCA
-
ONT
8h 49m
1 stop
Frontier Logo
6:00 am - 9:58 pm
ONT
-
DCA
12h 58m
1 stop
$160Frontier
Tue, May 5 - Fri, May 8
Frontier Logo
1:59 pm - 7:26 am
DCA
-
ONT
20h 27m
1 stop
Frontier Logo
10:50 am - 9:58 pm
ONT
-
DCA
8h 08m
1 stop
$161Frontier
Sat, May 2 - Sat, May 9
Frontier Logo
6:00 pm - 11:55 pm
DCA
-
ONT
8h 55m
1 stop
Frontier Logo
6:00 am - 12:59 pm
ONT
-
DCA
27h 59m
1 stop
$167Frontier
Mon, May 4 - Wed, May 6
Frontier Logo
6:00 pm - 10:05 am
DCA
-
ONT
19h 05m
1 stop
Frontier Logo
6:00 am - 9:58 pm
ONT
-
DCA
12h 58m
1 stop
$171Frontier
Mon, May 4 - Fri, May 8
Frontier Logo
6:00 pm - 11:55 pm
DCA
-
ONT
8h 55m
1 stop
Frontier Logo
10:50 am - 12:59 pm
ONT
-
DCA
23h 09m
1 stop
$177Frontier
Sat, May 2 - Tue, May 5
Frontier Logo
1:59 pm - 11:55 pm
DCA
-
ONT
12h 56m
1 stop
Frontier Logo
12:59 am - 4:59 pm
ONT
-
DCA
13h 00m
1 stop
$180Frontier
Tue, Apr 28 - Fri, May 1
Frontier Logo
1:59 pm - 11:55 pm
DCA
-
ONT
12h 56m
1 stop
Frontier Logo
6:00 am - 4:59 pm
ONT
-
DCA
7h 59m
1 stop
$185Frontier
Tue, Apr 28 - Tue, May 5
Frontier Logo
7:59 am - 11:55 pm
DCA
-
ONT
18h 56m
1 stop
Frontier Logo
6:00 am - 12:59 pm
ONT
-
DCA
27h 59m
1 stop
$187Frontier
Mon, Apr 27 - Tue, May 5
Frontier Logo
9:12 am - 8:04 am
IAD
-
ONT
25h 52m
1 stop
Frontier Logo
1:39 pm - 8:12 am
ONT
-
IAD
15h 33m
1 stop
$187Frontier
Tue, May 26 - Tue, Jun 2
Frontier Logo
1:59 pm - 11:55 pm
DCA
-
ONT
12h 56m
1 stop
Frontier Logo
12:59 am - 12:59 pm
ONT
-
DCA
9h 00m
1 stop
$190Frontier
Fri, Apr 24 - Wed, Apr 29

Alaska Airlines flights from District of Columbia to Ontario

Our best Alaska Airlines deals on District of Columbia to Ontario flight tickets
Alaska Airlines
May 5
IAD7:10 amWashington, D.C. Dulles Intl
10h 22m
1 stop
ONT2:32 pmOntario
May 6
ONT10:39 amOntario
10h 30m
1 stop
IAD12:09 amWashington, D.C. Dulles Intl
$321
Alaska Airlines
Apr 21
IAD7:11 pmWashington, D.C. Dulles Intl
17h 34m
1 stop
ONT9:45 amOntario
Apr 25
ONT10:39 amOntario
10h 30m
1 stop
IAD12:09 amWashington, D.C. Dulles Intl
$560
Alaska Airlines
Apr 21
IAD7:11 pmWashington, D.C. Dulles Intl
17h 34m
1 stop
ONT9:45 amOntario
Apr 25
ONT7:00 amOntario
14h 09m
2 stops
IAD12:09 amWashington, D.C. Dulles Intl
$611

Frontier flights from District of Columbia to Ontario

Our best Frontier deals on District of Columbia to Ontario flight tickets
Frontier
May 5
DCA6:00 pmWashington, D.C. Reagan-National
8h 49m
1 stop
ONT11:49 pmOntario
May 7
ONT6:00 amOntario
12h 58m
1 stop
DCA9:58 pmWashington, D.C. Reagan-National
$160
Frontier
May 2
DCA1:59 pmWashington, D.C. Reagan-National
20h 27m
1 stop
ONT7:26 amOntario
May 9
ONT10:50 amOntario
8h 08m
1 stop
DCA9:58 pmWashington, D.C. Reagan-National
$161
Frontier
May 4
DCA6:00 pmWashington, D.C. Reagan-National
8h 55m
1 stop
ONT11:55 pmOntario
May 6
ONT6:00 amOntario
27h 59m
1 stop
DCA12:59 pmWashington, D.C. Reagan-National
$167

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 April 9, 2026.
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

Cheapest round-trip

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Tue 5/5

6:00 pm-11:49 pm

1 stop8h 49m

Ontario

Fri 5/8

6:00 am-9:58 pm

1 stop12h 58m

$160

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Sat 5/2

1:59 pm-7:26 am

1 stop20h 27m

Ontario

Sat 5/9

10:50 am-9:58 pm

1 stop8h 08m

$161

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Mon 5/4

6:00 pm-11:55 pm

1 stop8h 55m

Ontario

Wed 5/6

6:00 am-12:59 pm

1 stop27h 59m

$167

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Mon 5/4

6:00 pm-10:05 am

1 stop19h 05m

Ontario

Fri 5/8

6:00 am-9:58 pm

1 stop12h 58m

$171

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Sat 5/2

6:00 pm-11:55 pm

1 stop8h 55m

Ontario

Tue 5/5

10:50 am-12:59 pm

1 stop23h 09m

$177

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Tue 4/28

1:59 pm-11:55 pm

1 stop12h 56m

Ontario

Fri 5/1

12:59 am-4:59 pm

1 stop13h 00m

$180
Quickest round-trip

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Tue 4/28

1:59 pm-11:55 pm

1 stop12h 56m

Ontario

Tue 5/5

6:00 am-4:59 pm

1 stop7h 59m

$185

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Mon 4/27

7:59 am-11:55 pm

1 stop18h 56m

Ontario

Tue 5/5

6:00 am-12:59 pm

1 stop27h 59m

$187

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Tue 5/26

9:12 am-8:04 am

1 stop25h 52m

Ontario

Tue 6/2

1:39 pm-8:12 am

1 stop15h 33m

$187

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Fri 4/24

1:59 pm-11:55 pm

1 stop12h 56m

Ontario

Wed 4/29

12:59 am-12:59 pm

1 stop9h 00m

$190

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Los Angeles from

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, January 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 $206. If you aren’t able to travel during the month of January, then book flights to Ontario from District of Columbia during July instead. Flights to Ontario in July, while not as cheap as those in January, still average around $342.

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

Fastest flight time

7h 16m

Direct flights

None
The fastest flight from District of Columbia to Ontario takes 7h 16m
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

Frequently asked questions about flying from District of Columbia to Ontario

  • 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 $125Free CancellationRating
5.7
2,995 reviews
Search Frontier flights
DeltaPriceFrom $213Free CancellationRating
7.9
8,392 reviews
Search Delta flights
United AirlinesPriceFrom $222Free CancellationRating
7.4
9,554 reviews
Search United Airlines flights
American AirlinesPriceFrom $256Free CancellationRating
7.1
11,560 reviews
Search American Airlines flights
SouthwestPriceFrom $278Free CancellationRating
8.0
4,338 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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