ONT - DCA

$124 Find Cheap Flights from Ontario to Reagan Washington National Airport - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$260
Typical prices: $270-$511
Frontier
Sat 10/20Mon 10/29
ONT - DCA • 1 stop
Cheapest one-way
$124
Typical prices: $157-$256
Frontier
Mon 10/15
ONT - DCA • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Ontario and Washington, D.C. Reagan-National Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
9 weeks
in advance
Our data shows that travelers who book at least 9 weeks in advance save around 40% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 46% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Denver Intl (DEN)
Cheapest • Avg $351 (round-trip)
Nashville Intl (BNA)
Shortest trip • 7h 28m (one-way)
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Insights
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We hope you love your trip to Washington, D.C. Reagan-National Airport!
Flight Deals
Booking Insights
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Tue, Oct 20 - Thu, Oct 29
Frontier Logo
11:52 am - 9:59 pmONT  Ontario-DCA Washington, D.C. Reagan-National
7h 07m1 stop Denver Intl
Frontier Logo
6:00 pm - 11:51 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
8h 51m1 stop Denver Intl
$260Frontier
Wed, Sep 30 - Tue, Oct 6
Frontier Logo
11:45 am - 9:59 pmONT  Ontario-DCA Washington, D.C. Reagan-National
7h 14m1 stop Denver Intl
Frontier Logo
6:00 pm - 11:47 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
8h 47m1 stop Denver Intl
$260Frontier
Thu, Dec 3 - Sat, Dec 5
Southwest Logo
10:55 am - 11:20 pmONT  Ontario-DCA Washington, D.C. Reagan-National
9h 25m1 stop Chicago Midway
Southwest Logo
6:00 am - 12:45 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
9h 45m1 stop Chicago Midway
$351Southwest
Thu, Jan 28 - Tue, Feb 2
American Airlines Logo
12:44 pm - 11:59 pmONT  Ontario-DCA Washington, D.C. Reagan-National
8h 15m1 stop Dallas/Fort Worth
American Airlines Logo
6:23 pm - 11:19 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
7h 56m1 stop Chicago O'Hare Intl
$351American Airlines
Wed, Sep 23 - Mon, Sep 28
United Airlines Logo
9:01 am - 10:30 pmONT  Ontario-DCA Washington, D.C. Reagan-National
10h 29m1 stop San Francisco
United Airlines Logo
6:12 pm - 10:49 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
7h 37m1 stop Chicago O'Hare Intl
$351United Airlines
Wed, Nov 18 - Mon, Nov 23
United Airlines Logo
6:00 am - 4:09 pmONT  Ontario-DCA Washington, D.C. Reagan-National
7h 09m1 stop Houston George Bush Intcntl
United Airlines Logo
4:09 pm - 8:51 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
7h 42m1 stop Denver Intl
$351United Airlines
Thu, Jan 28 - Tue, Feb 2
Delta Logo
7:00 am - 7:14 pmONT  Ontario-DCA Washington, D.C. Reagan-National
9h 14m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:00 pm - 11:48 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
9h 48m1 stop Salt Lake City
$351Delta
Mon, Nov 16 - Sat, Dec 5
Delta Logo
12:18 pm - 11:46 pmONT  Ontario-DCA Washington, D.C. Reagan-National
8h 28m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:57 pm - 10:30 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
7h 33m1 stop Salt Lake City
$351Delta
Tue, Oct 27 - Tue, Nov 10
Southwest Logo
5:40 am - 6:15 pmONT  Ontario-DCA Washington, D.C. Reagan-National
9h 35m2 stops Las Vegas Harry Reid Intl Dallas Love Field
Southwest Logo
6:10 am - 10:45 amDCA  Washington, D.C. Reagan-National-ONT Ontario
7h 35m1 stop Dallas Love Field
$356Southwest
Wed, Oct 21 - Sat, Oct 24
American Airlines Logo
7:34 pm - 7:00 amONT  Ontario-DCA Washington, D.C. Reagan-National
8h 26m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
5:00 am - 9:35 amDCA  Washington, D.C. Reagan-National-ONT Ontario
7h 35m1 stop Dallas/Fort Worth
$366American Airlines
Booking Insights

Price, demand and travel trends for Ontario to Washington, D.C. Reagan-National Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Ontario to Washington, D.C. Reagan-National Airport with more confidence.

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

Round-trip flights from Ontario to Washington, D.C. Reagan-National Airport start at $260. Prices are below average for this route right now, with typical round-trip fares ranging from $270 to $511. The lowest price found in the past 5 days was $260 on Frontier.

What's the cheapest day of the week to fly from Ontario to Washington, D.C. Reagan-National Airport?

Thursday is the cheapest day of the week to fly from Ontario to Washington, D.C. Reagan-National Airport, it is 25% cheaper than the average day. Monday is the most expensive day with flight prices 12% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • January is the cheapest month to fly from Ontario to Washington, D.C. Reagan-National Airport at $218 round-trip.
  • June ($505) and July ($484) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 131% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Ontario to Washington, D.C. Reagan-National Airport the cheapest?

Flights from Ontario to Washington, D.C. Reagan-National Airport are cheapest 9 weeks before departure. Booking in this window typically costs about 40% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Ontario to Washington, D.C. Reagan-National Airport flights

Low season

January

Cheapest flight

$124
Best time to beat the crowds with an average 46% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Ontario to Washington, D.C. Reagan-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

Your Ontario to Washington, D.C. Reagan-National Airport flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Ontario to Washington, D.C. Reagan-National Airport?

    Flights from Ontario to Washington, D.C. Reagan-National Airport usually depart from Ontario (ONT) and arrive at Washington, D.C. Reagan-National (DCA).

  • What cabin classes can I book on flights from Ontario to Washington, D.C. Reagan-National Airport?

    Three cabin classes are available on flights from Ontario to Washington, D.C. Reagan-National Airport:

    • Economy Class
    • Business Class
    • First Class

  • Which airports do connecting flights from Ontario to Washington, D.C. Reagan-National Airport pass through?

    One-stop flights from Ontario to Washington, D.C. Reagan-National Airport most commonly connect through:

    • Denver Intl (DEN) - 61% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 10% of one-stop connections
    • Dallas/Fort Worth (DFW) - 8% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) - 4% of one-stop connections

    Denver Intl (DEN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Ontario to Washington, D.C. Reagan-National Airport?

    Yes. Being flexible with your travel dates can save you up to 34% on the Ontario to Washington, D.C. Reagan-National Airport route. Thursday is the cheapest departure day at $304 round-trip on average, while Monday is the most expensive at $455, a difference of $151. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Washington, D.C. Reagan-National Airport?

    Some of the most popular sights in Washington, D.C. Reagan-National Airport are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. Reagan-National Airport on KAYAK.

  • How expensive are last-minute Ontario to Washington, D.C. Reagan-National Airport flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 18% above the route average of $402. Book 9 weeks before departure for the lowest fares.

  • How long is a flight from Ontario to Washington, D.C. Reagan-National Airport?

    A nonstop flight from Ontario to Washington, D.C. Reagan-National Airport takes 0h 00m, covering 2,258 miles.

  • Do I need a passport to fly from Ontario to Washington, D.C. Reagan-National Airport?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Ontario to Washington, D.C. Reagan-National Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $260 to $2,049. That means the highest observed fare was about 8x higher than the lowest one.

  • How are flight prices from Ontario to Washington, D.C. Reagan-National Airport looking right now?

    One-way fares from Ontario to Washington, D.C. Reagan-National Airport are currently lower than usual. Average one-way flight prices are about $168, which is 13% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Ontario to Washington, D.C. Reagan-National Airport?

    Flying via Nashville Intl (BNA) gives the shortest average 1-stop total travel time at 7h 28m, compared with 7h 30m via Phoenix Sky Harbor Intl (PHX) and 7h 39m via Las Vegas Harry Reid Intl (LAS).

  • What is the time difference between Ontario and Washington, D.C. Reagan-National Airport?

    Washington, D.C. Reagan-National Airport is 3 hours ahead of Ontario (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Washington, D.C. Reagan-National Airport (DCA)?

    Washington, D.C. Reagan-National Airport (DCA) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:
    · Sixt
    · Dollar
    · Thrifty
    · Alamo
    · Budget

  • How much should I expect to pay for a Ontario to Washington, D.C. Reagan-National Airport flight?

    Round-trip flights from Ontario to Washington, D.C. Reagan-National Airport range from $270 to $511, with an average of $402 over the past 12 months. Anything below $270 counts as a good deal.

Your guide to booking Ontario to Washington, D.C. Reagan-National Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Thursday departure instead of Monday. On this route, Thursday flights average $304 - about $151 less than Monday (33% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 9 weeks before you fly. On this route, that window historically saves about 40% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Ontario to Washington, D.C. Reagan-National Airport trip for January. Fares historically average $218 round-trip in that month - typically $287 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Washington, D.C. Reagan-National Airport.
    - Hyatt House Washington DC The Wharf
    - Canopy by Hilton Washington D.C - The Wharf
    - Intercontinental Hotels Washington D.C. - The Wharf By IHG

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)