DCA - ONT

$92 Find Cheap Flights from Reagan Washington National Airport to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Reagan-National to Ontario departing on 5/2. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$200
Typical prices: $251-$351
Frontier
Fri 5/1Fri 5/8
DCA - ONT • 1 stop
Cheapest one-way
$92
Typical prices: $136-$380
Frontier
Sat 5/2
DCA - ONT • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Reagan-National and Ontario. You'll need at least 1 connection.
Insights
Insights
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Insights
Top layover airports
Denver (DEN)
Cheapest • Avg $286 (round-trip)
Nashville (BNA)
Shortest trip • 7h 05m (one-way)
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 31% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Reagan-National to Ontario 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 Reagan-National to Ontario

Fri, May 1 - Fri, May 8
Frontier Logo
6:00 pm - 11:55 pm
DCA
-
ONT
8h 55m
1 stop
Frontier Logo
12:59 am - 1:00 pm
ONT
-
DCA
9h 01m
1 stop
$200Frontier
Mon, Apr 13 - Sun, Apr 19
Frontier Logo
6:00 pm - 11:56 pm
DCA
-
ONT
8h 56m
1 stop
Frontier Logo
12:59 am - 1:00 pm
ONT
-
DCA
9h 01m
1 stop
$201Frontier
Wed, Apr 15 - Mon, Apr 20
Frontier Logo
8:00 am - 11:55 pm
DCA
-
ONT
18h 55m
1 stop
Frontier Logo
12:59 am - 9:59 pm
ONT
-
DCA
18h 00m
1 stop
$202Frontier
Thu, Apr 16 - Wed, Apr 22
Frontier Logo
8:00 am - 7:31 am
DCA
-
ONT
26h 31m
1 stop
Frontier Logo
12:59 am - 1:00 pm
ONT
-
DCA
9h 01m
1 stop
$205Frontier
Wed, Apr 22 - Sat, Apr 25
Frontier Logo
8:00 am - 11:55 pm
DCA
-
ONT
18h 55m
1 stop
Frontier Logo
12:59 am - 1:00 pm
ONT
-
DCA
9h 01m
1 stop
$207Frontier
Sat, May 2 - Sat, May 9
Frontier Logo
6:00 pm - 11:55 pm
DCA
-
ONT
8h 55m
1 stop
Frontier Logo
12:59 am - 1:00 pm
ONT
-
DCA
9h 01m
1 stop
$210Frontier
Sun, May 3 - Thu, May 7
Frontier Logo
8:00 am - 7:31 am
DCA
-
ONT
26h 31m
1 stop
Frontier Logo
5:33 pm - 9:59 pm
ONT
-
DCA
25h 26m
1 stop
$211Frontier
Wed, Apr 8 - Tue, Apr 14
Frontier Logo
7:00 am - 11:56 pm
DCA
-
ONT
19h 56m
1 stop
Frontier Logo
12:59 am - 4:59 pm
ONT
-
DCA
13h 00m
1 stop
$213Frontier
Sat, Apr 18 - Sat, Apr 25
Frontier Logo
6:00 pm - 11:55 pm
DCA
-
ONT
8h 55m
1 stop
Frontier Logo
12:59 am - 1:00 pm
ONT
-
DCA
9h 01m
1 stop
$217Frontier
Mon, Mar 23 - Wed, Mar 25
Frontier Logo
6:00 pm - 11:59 pm
DCA
-
ONT
8h 59m
1 stop
Frontier Logo
6:15 am - 1:02 pm
ONT
-
DCA
27h 47m
1 stop
$219Frontier
Booking Insights

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

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Reagan-National Airport to Ontario, 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 Washington, D.C. Reagan-National Airport to Ontario is January, where tickets cost $264 (return) on average. On the other hand, the most expensive months are March and June, where the average cost of round-trip tickets is $495 and $487 respectively.

Good to know

Low seasonOctober
Cheapest flight$92
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Reagan Washington 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
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 Reagan Washington National Airport to Ontario flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Reagan-National Airport to Ontario was $92 for a one-way ticket and $200 for a round-trip.

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

    A passport is not required to fly from Reagan Washington National Airport to Ontario.

  • Which airports will I be using when flying from Reagan Washington National Airport to Ontario?

    Reagan Washington National Airport and Ontario are both served by 1 main airport. You will leave Reagan Washington National Airport from Washington, D.C. Reagan-National and will be arriving at Ontario.

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

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

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

    oneworld is the only airline alliance operating flights between Reagan Washington National Airport and Ontario.

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Ontario are Southwest and American Airlines. With an average price for the route of $448 and an overall rating of 8.0, Southwest is the most popular choice. American Airlines is also a great choice for the route, with an average price of $427 and an overall rating of 7.1.

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

    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 Reagan Washington National Airport to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Reagan Washington National Airport 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 Reagan Washington National Airport to Ontario?

    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 Ontario with an airline and back to Reagan Washington National Airport with another airline. Booking your flights between Reagan Washington National Airport and ONT 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 Reagan Washington National Airport to Ontario?

    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 Ontario from Reagan Washington National Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Reagan-National to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Reagan-National to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4307 reviews
8.6Crew
7.0Food
8.1Boarding
7.5Entertainment
8.0Comfort
Airline reviews

The charges were ridiculous for an hour flight and the turbulence was very scary.

2.0 MediocreDarcey, Feb 2026
SAN - SJC
Read more Southwest reviews

The charges were ridiculous for an hour flight and the turbulence was very scary.

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Haven’t flown on SW in years. Flight was on time departing and arriving. Served vegan butter onion flavored pretzels which were bad. Coke served was in a tiny paper cup. Crew was not engaging. Felt like they were going through the motions. Old plane, tight seats and no leg room.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

This was one of the most frustrating travel experiences I've had to date. I had changed my flight day of to this one as it was slated to depart on time. It ended up being so delayed that my original flight took off before this one did. The boarding process began but eventually stopped and everyone had to get off the plane as a problem was identified. The person at the front desk just tried to laugh it off as if this wasn't already a huge inconvenience. From there, we eventually got to board only to sit at the gate for an additional hour because of some additional issue. This was extremely frustrating and caused a lot of stress.

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

Amazing I love American. I’ll never fly anyone else if I can help it.

delayed due to weather. Could not communicate with family since the wifi was broken

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

We were told the flight was delayed 5 times, then it was moved to the next day.

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

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

Information on your arrival and departure airports