ONT - DCA

$119 Find Cheap Flights from Ontario to Reagan Washington National Airport - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Reagan-National departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$314
Typical prices: $333-$599
Frontier
Wed 7/29Wed 8/5
ONT - DCA • 1 stop
Cheapest one-way
$119
Typical prices: $138-$306
Frontier
Sat 9/12
ONT - DCA • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Ontario and Reagan-National. You'll need at least 1 connection.
Insights
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Top layover airports
Houston (HOU)
Cheapest • Avg $346 (round-trip)
Houston (HOU)
Shortest trip • 6h 35m (one-way)
Insights
Insights
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Insights
When to travel
January
Cheapest • 33% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Reagan-National (ONT-DCA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Reagan-National that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Reagan-National

Wed, Jul 29 - Wed, Aug 5
Frontier Logo
6:00 am - 12:51 pm
ONT
-
DCA
27h 51m
1 stop
Frontier Logo
7:00 am - 11:50 pm
DCA
-
ONT
19h 50m
1 stop
$314Frontier
Sun, Oct 4 - Sat, Nov 7
Frontier Logo
6:00 am - 9:58 pm
ONT
-
DCA
12h 58m
1 stop
Frontier Logo
1:59 pm - 11:55 pm
DCA
-
ONT
12h 56m
1 stop
$315Frontier
Sun, Aug 30 - Tue, Sep 1
Frontier Logo
10:49 am - 9:59 pm
ONT
-
DCA
8h 10m
1 stop
Frontier Logo
6:00 pm - 2:03 pm
DCA
-
ONT
23h 03m
2 stops
$316Frontier
Fri, Aug 7 - Sat, Aug 8
Frontier Logo
6:00 am - 4:59 pm
ONT
-
DCA
7h 59m
1 stop
Frontier Logo
6:00 pm - 11:50 pm
DCA
-
ONT
8h 50m
1 stop
$317Frontier
Sun, Aug 2 - Mon, Aug 10
Frontier Logo
6:00 am - 12:51 pm
ONT
-
DCA
27h 51m
1 stop
Frontier Logo
7:00 am - 10:04 am
DCA
-
ONT
30h 04m
1 stop
$318Frontier
Wed, Aug 12 - Thu, Aug 13
Frontier Logo
6:00 am - 12:51 pm
ONT
-
DCA
27h 51m
1 stop
Frontier Logo
6:00 pm - 11:50 pm
DCA
-
ONT
8h 50m
1 stop
$321Frontier
Wed, Sep 23 - Thu, Oct 1
Frontier Logo
6:00 am - 9:58 pm
ONT
-
DCA
12h 58m
1 stop
Frontier Logo
6:00 pm - 11:55 pm
DCA
-
ONT
8h 55m
1 stop
$322Frontier
Wed, Aug 5 - Mon, Aug 10
Frontier Logo
8:58 am - 12:51 pm
ONT
-
DCA
48h 53m
2 stops
Frontier Logo
6:00 pm - 10:04 am
DCA
-
ONT
19h 04m
1 stop
$325Frontier
Mon, Aug 3 - Mon, Aug 10
Frontier Logo
10:49 am - 4:59 pm
ONT
-
DCA
27h 10m
1 stop
Frontier Logo
7:00 am - 10:04 am
DCA
-
ONT
30h 04m
1 stop
$327Frontier
Sun, Aug 2 - Wed, Aug 5
Frontier Logo
6:00 am - 12:51 pm
ONT
-
DCA
27h 51m
1 stop
Frontier Logo
7:00 am - 11:50 pm
DCA
-
ONT
19h 50m
1 stop
$328Frontier
Booking Insights

KAYAK's insights & trends for Ontario to Reagan-National flights

Get data-powered insights and trends into flights from Ontario to Reagan-National to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Ontario to Washington, D.C. Reagan-National Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Washington, D.C. Reagan-National Airport departing in July.

What is the cheapest month to fly from Ontario to Washington, D.C. Reagan-National Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Washington, D.C. Reagan-National Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Washington, D.C. Reagan-National Airport is January, where tickets cost $265 (return) on average. On the other hand, the most expensive months are June and March, where the average cost of round-trip tickets is $513 and $504 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Washington, D.C. Reagan-National Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Washington, D.C. Reagan-National Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Find deals

Good to know

Low season

February

Cheapest flight

$119
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 29% increase in price.
Flight from Ontario to Reagan Washington National Airport

When to book flights from Ontario to Reagan-National

Are your dates flexible? Find out the best times to travel from Ontario to Reagan-National based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Ontario to Reagan Washington National Airport flights

  • What is the cheapest flight from Ontario to Washington, D.C. Reagan-National Airport?

    In the last 5 days, the lowest price for a flight from Ontario to Washington, D.C. Reagan-National Airport was $119 for a one-way ticket and $315 for a round-trip.

  • Do I need a passport to fly between Ontario and Reagan Washington National Airport?

    No

  • Which aircraft models fly most regularly from Ontario to Reagan Washington National Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Reagan Washington National Airport?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Ontario and Reagan Washington National Airport, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Reagan Washington National Airport from Ontario?

    Denver is the most popular layover city among KAYAK users traveling from Ontario to Reagan Washington National Airport.

  • Which is the best airline for flights from Ontario to Washington, D.C., Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Ontario to Washington, D.C. are Southwest and Delta. With an average price for the route of $482 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $417 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Ontario to Reagan Washington National Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Reagan Washington National Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Reagan Washington National Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reagan Washington National Airport from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Reagan Washington National Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reagan Washington National Airport with an airline and back to Ontario with another airline. Booking your flights between Ontario and DCA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Reagan Washington National Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reagan Washington National Airport from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Ontario to Reagan-National

Information on your arrival and departure airports

Ontario (ONT)
Reagan-National (DCA)