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Cheap flights from Ontario to Washington, D.C. Reagan-National Airport from $62

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Washington, D.C. Reagan-National Airport departing on 3/24. 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 Ontario to Washington, D.C.

Cheap round-trip flights

These are some of the best round-trip flight deals from Ontario to Washington, D.C. that have been recently found on momondo from popular airlines, departing in the coming months.
12:10 pm - 9:59 pmONT-DCA
6h 49m1 stop
7:00 am - 11:20 amDCA-ONT
7h 20m1 stop
$127Frontier
Find Deal
Wed, Apr 23 - Wed, Apr 30
12:59 am - 12:03 pmONT-DCA
8h 04m1 stop
6:00 pm - 12:09 amDCA-ONT
9h 09m1 stop
$128Frontier
Find Deal
Tue, Mar 18 - Wed, Mar 26
12:59 am - 12:04 pmONT-DCA
8h 05m1 stop
7:00 am - 2:27 pmDCA-ONT
10h 27m1 stop
$129Frontier
Find Deal
Mon, Mar 31 - Tue, Apr 15
4:20 pm - 4:24 pmONT-DCA
21h 04m1 stop
8:00 am - 9:27 pmDCA-ONT
16h 27m1 stop
$326Alaska Airlines
Find Deal
Tue, Mar 4 - Tue, Mar 11
11:15 am - 8:35 pmONT-DCA
6h 20m1 stop
2:00 pm - 8:35 pmDCA-ONT
9h 35m1 stop
$327Southwest
Find Deal
Wed, Mar 5 - Tue, Mar 11
6:00 am - 10:15 pmONT-DCA
13h 15m2 stops
1:00 pm - 11:59 pmDCA-ONT
13h 59m1 stop
Tue, Apr 22 - Sat, Apr 26
6:00 am - 6:10 pmONT-DCA
9h 10m2 stops
11:00 am - 3:30 pmDCA-ONT
7h 30m1 stop
$332Southwest
Find Deal
Thu, Mar 6 - Tue, Mar 11
5:30 pm - 8:50 amONT-DCA
12h 20m2 stops
6:00 am - 11:36 amDCA-ONT
8h 36m1 stop
$345Delta
Find Deal
Mon, Mar 24 - Wed, Mar 26
5:30 pm - 8:50 amONT-DCA
12h 20m2 stops
2:55 pm - 11:56 pmDCA-ONT
12h 01m2 stops
$350Delta
Find Deal
Mon, Mar 24 - Wed, Mar 26
12:49 am - 12:04 pmONT-DCA
8h 15m1 stop
8:00 am - 11:59 pmDCA-ONT
18h 59m2 stops
Fri, Apr 4 - Wed, Apr 9

Frontier flights from Ontario to Washington, D.C. Reagan-National Airport

Our best Frontier deals on Ontario to Washington, D.C. Reagan-National Airport flight tickets
Frontier
Apr 23
ONT12:10 pmOntario
6h 49m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
Apr 30
DCA7:00 amWashington, D.C. Reagan-National
7h 20m
1 stop
ONT11:20 amOntario
Frontier
Mar 18
ONT12:59 amOntario
8h 04m
1 stop
DCA12:03 pmWashington, D.C. Reagan-National
Mar 26
DCA6:00 pmWashington, D.C. Reagan-National
9h 09m
1 stop
ONT12:09 amOntario
Frontier
Mar 31
ONT12:59 amOntario
8h 05m
1 stop
DCA12:04 pmWashington, D.C. Reagan-National
Apr 15
DCA7:00 amWashington, D.C. Reagan-National
10h 27m
1 stop
ONT2:27 pmOntario

Alaska Airlines flights from Ontario to Washington, D.C. Reagan-National Airport

Our best Alaska Airlines deals on Ontario to Washington, D.C. Reagan-National Airport flight tickets
Alaska Airlines
Mar 4
ONT4:20 pmOntario
21h 04m
1 stop
DCA4:24 pmWashington, D.C. Reagan-National
Mar 11
DCA8:00 amWashington, D.C. Reagan-National
16h 27m
1 stop
ONT9:27 pmOntario
Alaska Airlines
Mar 4
ONT5:44 pmOntario
20h 56m
1 stop
DCA5:40 pmWashington, D.C. Reagan-National
Mar 11
DCA9:00 amWashington, D.C. Reagan-National
15h 27m
2 stops
ONT9:27 pmOntario
Alaska Airlines
Mar 4
ONT6:00 amOntario
13h 15m
2 stops
DCA10:15 pmWashington, D.C. Reagan-National
Mar 11
DCA9:21 amWashington, D.C. Reagan-National
15h 06m
2 stops
ONT9:27 pmOntario

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Ontario to Washington, D.C. Reagan-National Airport

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 Washington, D.C. Reagan-National Airport?

The month of June is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Ontario, with most prices found around $314. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of June, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $326.

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from Ontario to Washington, D.C. Reagan-National Airport is on a Wednesday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Wednesday will often find tickets for as low as $434. Flights from Ontario to Washington, D.C. Reagan-National Airport on a Sunday will generally be more expensive and average around $615. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest Ontario to Washington, D.C. Reagan-National Airport flights are usually those with departure times in the afternoon. Our users have found flights to Washington, D.C. Reagan-National Airport in the afternoon for as low as $188. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the morning when prices are around $503.

How far in advance should I book a flight to Washington, D.C. Reagan-National Airport?

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from Ontario when booking 9 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around $397 when searching 9 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from Ontario for as low as $312 on momondo.

How have Ontario to Washington, D.C. Reagan-National Airport flight prices changed over time?

As of February 2025, prices for Ontario to Washington, D.C. Reagan-National Airport flights are approximately 12% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Washington, D.C. Reagan-National Airport

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

Cheap Ontario to Washington, D.C. Reagan-National Airport (ONT to DCA) flight deals and tips

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

Best Price Found

$62

Fastest flight time

6h 20m

Direct flights

None
The best one-way flight to Washington, D.C. Reagan-National Airport from Ontario in the past 72 hours is $62. The best round-trip flight deal from Ontario to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $127.
The fastest flight from Ontario to Washington, D.C. Reagan-National Airport takes 6h 20m
There are no direct flights from Ontario to Washington, D.C. Reagan-National Airport. Popular non-direct route for this connection is Ontario Airport - Washington, D.C. Reagan-National Airport.

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

    The distance between Ontario and Washington, D.C. Reagan-National is about 2260.8 mi. A reasonable flight in good conditions will take 6h 20m.

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

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

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

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

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The required travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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


Best airlines flying from Ontario to Washington, D.C. Reagan-National Airport

Compare and see reviews for airlines that fly from Ontario to Washington, D.C. Reagan-National Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $148Free CancellationRating
6.0
3,355 reviews
Search Frontier flights
Alaska AirlinesPriceFrom $168Free CancellationRating
8.0
9,692 reviews
Search Alaska Airlines flights
DeltaPriceFrom $273Free CancellationRating
8.0
8,220 reviews
Search Delta flights
American AirlinesPriceFrom $310Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $326Free CancellationRating
7.4
8,766 reviews
Search United Airlines flights
SouthwestPriceFrom $326Free CancellationRating
8.1
4,411 reviews
Search Southwest flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Arlington
Gettysburg
Laurel
National Harbor
Silver Spring
Woodbridge
Fredericksburg
Manassas
Tysons
Waldorf
Gaithersburg
Linthicum Heights
Glen Burnie
Rockville
Fairfax
Towson
Hanover
Reston
Hyattsville

Why use momondo?

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

It is quick and easy to find Ontario to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.

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

All flight searches from Ontario to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Washington, D.C..

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

If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from Ontario and alert you when they change.


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