DCA - ONT

$149 Find Cheap Flights from Reagan Washington National Airport to Ontario - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$182
Typical prices: $303-$533
Frontier
Fri 11/9Fri 11/16
DCA - ONT • 1 stop
Cheapest one-way
$149
Typical prices: $167-$294
Frontier
Thu 11/22
DCA - ONT • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. Reagan-National Airport and Ontario. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
January
Cheapest • 48% price drop
January
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Houston Hobby (HOU)
Cheapest • Avg $236 (round-trip)
Atlanta Hartsfield-Jackson (ATL)
Shortest trip • 7h 34m (one-way)
Insights
Insights
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Booking Insights
Flight Deals

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

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

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

Mon, Nov 9 - Mon, Nov 16
Frontier Logo
7:00 am - 10:35 amDCA  Washington, D.C. Reagan-National-ONT Ontario
30h 35m1 stop Denver Intl
Frontier Logo
6:30 am - 4:47 pmONT  Ontario-DCA Washington, D.C. Reagan-National
7h 17m1 stop Denver Intl
$182Frontier
Sat, Dec 5 - Mon, Dec 14
Frontier Logo
6:00 pm - 10:45 amDCA  Washington, D.C. Reagan-National-ONT Ontario
19h 45m1 stop Denver Intl
Frontier Logo
6:00 am - 4:55 pmONT  Ontario-DCA Washington, D.C. Reagan-National
7h 55m1 stop Denver Intl
$184Frontier
Sat, Dec 5 - Mon, Dec 14
Southwest Logo
6:00 am - 12:45 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
9h 45m1 stop Chicago Midway
Southwest Logo
7:50 am - 9:55 pmONT  Ontario-DCA Washington, D.C. Reagan-National
11h 05m2 stops Austin Bergstrom Atlanta Hartsfield-Jackson
$248Southwest
Sat, Dec 5 - Mon, Dec 14
Southwest Logo
6:10 am - 12:50 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
9h 40m2 stops Dallas Love Field Phoenix Sky Harbor Intl
Southwest Logo
7:50 am - 9:55 pmONT  Ontario-DCA Washington, D.C. Reagan-National
11h 05m2 stops Austin Bergstrom Atlanta Hartsfield-Jackson
$253Southwest
Thu, Jan 7 - Mon, Jan 11
Delta Logo
7:00 am - 11:27 amDCA  Washington, D.C. Reagan-National-ONT Ontario
7h 27m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:00 pm - 10:15 pmONT  Ontario-DCA Washington, D.C. Reagan-National
7h 15m1 stop Atlanta Hartsfield-Jackson
$257Delta
Wed, Jan 13 - Thu, Jan 21
Delta Logo
6:00 am - 11:27 amDCA  Washington, D.C. Reagan-National-ONT Ontario
8h 27m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:00 pm - 10:15 pmONT  Ontario-DCA Washington, D.C. Reagan-National
7h 15m1 stop Atlanta Hartsfield-Jackson
$257Delta
Wed, Jan 27 - Sun, Jan 31
American Airlines Logo
6:24 pm - 11:16 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
7h 52m1 stop Chicago O'Hare Intl
American Airlines Logo
6:26 am - 6:03 pmONT  Ontario-DCA Washington, D.C. Reagan-National
8h 37m1 stop Chicago O'Hare Intl
$291American Airlines
Wed, Jan 27 - Mon, Feb 1
American Airlines Logo
5:02 pm - 11:16 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
9h 14m1 stop Chicago O'Hare Intl
American Airlines Logo
6:26 am - 6:03 pmONT  Ontario-DCA Washington, D.C. Reagan-National
8h 37m1 stop Chicago O'Hare Intl
$307American Airlines
Tue, Dec 15 - Thu, Jan 7
Multiple Airlines Logo
6:00 pm - 10:45 amDCA  Washington, D.C. Reagan-National-ONT Ontario
19h 45m1 stop Denver Intl
Multiple Airlines Logo
11:36 am - 4:03 pmONT  Ontario-DCA Washington, D.C. Reagan-National
25h 27m1 stop Seattle/Tacoma Intl
$329Multiple Airlines
Sat, Jan 16 - Sat, Jan 23
United Airlines Logo
4:15 pm - 9:00 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
7h 45m1 stop Denver Intl
United Airlines Logo
6:00 am - 3:59 pmONT  Ontario-DCA Washington, D.C. Reagan-National
6h 59m1 stop Houston George Bush Intcntl
$373United Airlines
Booking Insights

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

Round-trip flights from Washington, D.C. Reagan-National Airport to Ontario typically range from $303 to $533. The lowest price found in the past 5 days was $182, on Frontier.

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

Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from Washington, D.C. Reagan-National Airport to Ontario. It’s 18% cheaper than the average day, while Sunday is the most expensive, with prices 55% higher.

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

•January is the cheapest month to fly from Washington, D.C. Reagan-National Airport to Ontario at $201 round-trip.
•December ($578) and April ($517) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 187% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

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

Low season

May

Cheapest flight

$149
Beat the crowds with an average 34% drop in travelers.
The most popular month to fly with an average 44% increase in travelers.
One-way flight from Washington, D.C. Reagan-National Airport to Ontario

When to book flights from Reagan-National to Ontario

Are your dates flexible? Find out the best times to travel from Reagan-National to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Washington, D.C. Reagan-National Airport to Ontario 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 Washington, D.C. Reagan-National Airport to Ontario?

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

    • Economy Class
    • First Class

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

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

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

    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 Washington, D.C. Reagan-National Airport to Ontario flight?

    Round-trip flights from Washington, D.C. Reagan-National Airport to Ontario range from $303 to $533, with an average of $388 over the past 12 months. Anything below $303 counts as a good deal.

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

    One-way fares from Washington, D.C. Reagan-National Airport to Ontario are currently lower than usual. Average one-way flight prices are about $186, which is 16% below the typical average for this route.

  • What car rental options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:

    • Fox
    • Thrifty
    • Europcar
    • Dollar
    • Alamo

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

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

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

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

    • Denver Intl (DEN) - 43% of one-stop connections
    • Dallas/Fort Worth (DFW) - 19% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) - 12% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 10% of one-stop connections

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

    Yes. Flexible dates can save you up to 48% on flights from Washington, D.C. Reagan-National Airport to Ontario. Monday is the cheapest departure day at $320 round-trip on average, while Sunday is the most expensive at $605, a difference of $285.

    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 Washington, D.C. Reagan-National Airport to Ontario?

    Flying via Houston Hobby (HOU) gives the shortest average 1-stop total travel time at 7h 07m, compared with 7h 34m via Atlanta Hartsfield-Jackson (ATL) and 7h 43m via Nashville Intl (BNA).

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

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

  • What popular places can I visit in Ontario?

    Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Your guide to booking Washington, D.C. Reagan-National Airport to Ontario 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 Monday departure and avoid flying on Sunday. On this route, Monday flights average $320, about $285 less than Sunday fares (47% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Washington, D.C. Reagan-National Airport to Ontario trip for January. Fares historically average $201 round-trip in that month - typically $377 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.

    • Ontario Airport Inn
    • Azure Hotel & Suites, Trademark Collection by Wyndham
    • Holiday Inn Ontario Airport By IHG

More options for your flight from Reagan-National to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Car rentals in Ontario
Hotels in Ontario
Vacations in Ontario