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
$215
Typical prices: $298-$542
Frontier
Mon 12/3Wed 12/12
ONT - DCA • 1 stop
Cheapest one-way
$99
Typical prices: $162-$265
Frontier
Fri 12/7
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 30% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 47% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Denver Intl (DEN)
Cheapest • Avg $345 (round-trip)
Nashville Intl (BNA)
Shortest trip • 7h 27m (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

Thu, Dec 3 - Sat, Dec 12
Frontier Logo
11:30 am - 9:55 pmONT  Ontario-DCA Washington, D.C. Reagan-National
7h 25m1 stop Denver Intl
Frontier Logo
1:40 pm - 10:17 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
11h 37m1 stop Denver Intl
$215Frontier
Sat, Feb 13 - Sat, Feb 20
United Airlines Logo
6:00 am - 3:55 pmONT  Ontario-DCA Washington, D.C. Reagan-National
6h 55m1 stop Houston George Bush Intcntl
United Airlines Logo
1:00 pm - 6:22 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
8h 22m1 stop Chicago O'Hare Intl
$243United Airlines
Thu, Dec 3 - Mon, Dec 7
Frontier Logo
6:00 am - 9:55 pmONT  Ontario-DCA Washington, D.C. Reagan-National
12h 55m1 stop Denver Intl
Frontier Logo
1:40 pm - 10:45 amDCA  Washington, D.C. Reagan-National-ONT Ontario
24h 05m1 stop Denver Intl
$248Frontier
Sat, Feb 13 - Sat, Feb 20
Southwest Logo
10:05 am - 9:55 pmONT  Ontario-DCA Washington, D.C. Reagan-National
8h 50m2 stops Phoenix Sky Harbor Intl Dallas Love Field
Southwest Logo
6:00 am - 12:25 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
9h 25m1 stop Chicago Midway
$263Southwest
Thu, Dec 3 - Sun, Dec 6
Southwest Logo
8:40 am - 8:15 pmONT  Ontario-DCA Washington, D.C. Reagan-National
8h 35m2 stops Las Vegas Harry Reid Intl Dallas Love Field
Southwest Logo
6:40 pm - 11:40 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
8h 00m1 stop Las Vegas Harry Reid Intl
$319Southwest
Thu, Jan 28 - Tue, Feb 2
American Airlines Logo
12:45 pm - 11:59 pmONT  Ontario-DCA Washington, D.C. Reagan-National
8h 14m1 stop Dallas/Fort Worth
American Airlines Logo
5:02 pm - 11:16 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
9h 14m1 stop Chicago O'Hare Intl
$351American Airlines
Fri, Nov 6 - Thu, Nov 12
Multiple Airlines Logo
7:13 pm - 4:20 pmONT  Ontario-DCA Washington, D.C. Reagan-National
18h 07m1 stop Seattle/Tacoma Intl
Multiple Airlines Logo
6:00 pm - 11:51 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
8h 51m1 stop Denver Intl
$357Multiple Airlines
Wed, Nov 11 - Mon, Nov 16
Multiple Airlines Logo
6:00 am - 9:59 pmONT  Ontario-DCA Washington, D.C. Reagan-National
12h 59m1 stop Seattle/Tacoma Intl
Multiple Airlines Logo
7:00 am - 10:35 amDCA  Washington, D.C. Reagan-National-ONT Ontario
30h 35m1 stop Denver Intl
$363Multiple Airlines
Thu, Jan 28 - Tue, Feb 2
American Airlines Logo
12:45 pm - 11:59 pmONT  Ontario-DCA Washington, D.C. Reagan-National
8h 14m1 stop Dallas/Fort Worth
American Airlines Logo
5:02 pm - 11:16 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
9h 14m1 stop Chicago O'Hare Intl
$371American Airlines
Sat, Nov 14 - Mon, Nov 23
United Airlines Logo
5:00 am - 2:55 pmONT  Ontario-DCA Washington, D.C. Reagan-National
6h 55m1 stop Denver Intl
United Airlines Logo
12:50 pm - 10:48 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
12h 58m2 stops Houston George Bush Intcntl San Francisco
$376United 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 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 typically range from $298 to $542. The lowest price found in the past 5 days was $215, on Frontier.

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

Based on deals KAYAK users found in the last 12 months, Thursday is the cheapest day of the week to fly from Ontario to Washington, D.C. Reagan-National Airport. It’s 19% cheaper than the average day, while Monday is the most expensive, with prices 11% higher.

What’s 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 $227 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 122% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights 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 30% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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

Low season

January

Cheapest flight

$99
Beat the crowds with an average 38% drop in travelers.
The most popular month to fly with an average 71% increase in travelers.
One-way 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 answers about this route, including flight times, airports, airlines and booking tips.

  • 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

  • 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 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.

  • 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 $298 to $542, with an average of $427 over the past 12 months. Anything below $298 counts as a good deal.

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

    Last-minute fares on this route (booked within two weeks of departure) run 16% above the $427 route average. Book 9 weeks before departure for the lowest fares.

  • 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 $163, which is 23% below the typical average for this route.

  • 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 $24 for economy cars. Top options include:

    • Sixt
    • Dollar
    • Thrifty
    • Hertz
    • Alamo

  • 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).

  • 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) - 60% of one-stop connections
    • Dallas/Fort Worth (DFW) - 11% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 7% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 5% of one-stop connections

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

    Yes. Flexible dates can save you up to 28% on flights from Ontario to Washington, D.C. Reagan-National Airport. Thursday is the cheapest departure day at $346 round-trip on average, while Monday is the most expensive at $475, a difference of $129.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • 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 27m, compared with 7h 29m via Las Vegas Harry Reid Intl (LAS) and 7h 36m via Chicago O'Hare Intl (ORD).

  • 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 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.

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 are flexible, aim for a Thursday departure and avoid flying on Monday. On this route, Thursday flights average $346, about $129 less than Monday fares (27% 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 30% 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 $227 round-trip in that month - typically $278 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
    • Intercontinental Hotels Washington D.C. - The Wharf By IHG
    • Canopy by Hilton Washington D.C - The Wharf

More options for your flight from Ontario to Reagan-National

Complete your trip to Washington, D.C. with a hotel stay or car rental

Car rentals in Washington, D.C.
Hotels in Washington, D.C.
Vacations in Washington, D.C.