DCA - ONT

$165 Find Cheap Flights from Reagan Washington National Airport to Ontario - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$200
Typical prices: $264-$477
Frontier
Mon 9/17Wed 9/19
DCA - ONT • 1 stop
Cheapest one-way
$165
Typical prices: $161-$287
Frontier
Fri 10/19
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 • 45% price drop
February
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 28m (one-way)
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
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

Thu, Sep 17 - Sat, Sep 19
Frontier Logo
6:00 pm - 11:47 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
8h 47m1 stop Denver Intl
Frontier Logo
11:45 am - 9:59 pmONT  Ontario-DCA Washington, D.C. Reagan-National
7h 14m1 stop Denver Intl
$200Frontier
Thu, Oct 29 - Sat, Oct 31
Frontier Logo
6:00 pm - 11:51 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
8h 51m1 stop Denver Intl
Frontier Logo
6:25 am - 4:47 pmONT  Ontario-DCA Washington, D.C. Reagan-National
7h 22m1 stop Denver Intl
$252Frontier
Mon, Sep 21 - Thu, Sep 24
Multiple Airlines Logo
5:27 pm - 9:51 amDCA  Washington, D.C. Reagan-National-ONT Ontario
19h 24m1 stop Portland
Multiple Airlines Logo
11:45 am - 4:59 pmONT  Ontario-DCA Washington, D.C. Reagan-National
26h 14m1 stop Denver Intl
$323Multiple Airlines
Thu, Oct 22 - Sat, Oct 24
Multiple Airlines Logo
1:00 pm - 10:29 amDCA  Washington, D.C. Reagan-National-ONT Ontario
24h 29m1 stop Denver Intl
Multiple Airlines Logo
6:02 am - 9:59 pmONT  Ontario-DCA Washington, D.C. Reagan-National
12h 57m1 stop Seattle/Tacoma Intl
$323Multiple Airlines
Wed, Nov 18 - Wed, Nov 25
American Airlines Logo
8:20 am - 1:31 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
8h 11m1 stop Dallas/Fort Worth
American Airlines Logo
12:45 pm - 11:59 pmONT  Ontario-DCA Washington, D.C. Reagan-National
8h 14m1 stop Dallas/Fort Worth
$351American Airlines
Wed, Oct 28 - Tue, Nov 10
Delta Logo
6:00 am - 11:06 amDCA  Washington, D.C. Reagan-National-ONT Ontario
8h 06m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:18 pm - 11:46 pmONT  Ontario-DCA Washington, D.C. Reagan-National
8h 28m1 stop Atlanta Hartsfield-Jackson
$351Delta
Wed, Oct 28 - Mon, Nov 9
Delta Logo
6:00 am - 11:06 amDCA  Washington, D.C. Reagan-National-ONT Ontario
8h 06m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:10 pm - 11:29 amONT  Ontario-DCA Washington, D.C. Reagan-National
9h 19m1 stop Atlanta Hartsfield-Jackson
$351Delta
Tue, Sep 22 - Tue, Sep 29
Southwest Logo
4:50 pm - 10:05 pmDCA  Washington, D.C. Reagan-National-ONT Ontario
8h 15m2 stops Omaha Eppley Airfield Denver Intl
Southwest Logo
11:55 pm - 11:25 amONT  Ontario-DCA Washington, D.C. Reagan-National
8h 30m1 stop Chicago Midway
$356Southwest
Sat, Nov 7 - Tue, Nov 10
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
1:35 pm - 11:50 pmONT  Ontario-DCA Washington, D.C. Reagan-National
7h 15m1 stop Dallas Love Field
$356Southwest
Wed, Dec 2 - Sun, Dec 6
American Airlines Logo
5:00 am - 9:40 amDCA  Washington, D.C. Reagan-National-ONT Ontario
7h 40m1 stop Dallas/Fort Worth
American Airlines Logo
11:59 pm - 11:00 amONT  Ontario-DCA Washington, D.C. Reagan-National
8h 01m1 stop Dallas/Fort Worth
$376American 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 from Washington, D.C. Reagan-National Airport to Ontario 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 start at $200. Prices are below average for this route right now, with typical round-trip fares ranging from $264 to $477. The lowest price found in the past 5 days was $200 on Frontier.

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

Saturday is the cheapest day of the week to fly from Washington, D.C. Reagan-National Airport to Ontario, it is 17% cheaper than the average day. Friday is the most expensive day with flight prices 19% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is 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.
  • April ($517) and March ($495) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 157% 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

$165
Best time to beat the crowds but there is an average 19% increase in price.
Most popular time to fly and prices are also 19% lower on average.
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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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).

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

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

    • Economy Class
    • Premium Economy Class
    • First Class

  • 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) - 52% of one-stop connections
    • Dallas/Fort Worth (DFW) - 19% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 10% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) - 10% 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 Washington, D.C. Reagan-National Airport to Ontario?

    On the Washington, D.C. Reagan-National Airport to Ontario route, being flexible with your departure day can save you up to 31%. Saturday is the cheapest day at $304 round-trip on average, while Friday is the most expensive at $437: a $133 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What popular places can I visit in Ontario?

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

  • 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 0h 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 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 $175, which is 16% below the typical average for this route.

  • 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 28m via Atlanta Hartsfield-Jackson (ATL) and 7h 39m via Phoenix Sky Harbor Intl (PHX).

  • 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 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

  • 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 $264 to $477, with an average of $365 over the past 12 months. Anything below $264 counts as a good deal.

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 can be flexible, aim for a Saturday departure instead of Friday. On this route, Saturday flights average $304 - about $133 less than Friday (30% 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 $316 less than the most expensive month, which is April (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.
    - Azure Hotel & Suites, Trademark Collection by Wyndham
    - La Quinta Inn & Suites by Wyndham Ontario Airport
    - 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