ONT

$65 Find Cheap Flights from District of Columbia 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 to Ontario departing on 4/21. 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

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Everything you should know

Cheapest round-trip
$128
Overall average: $326
Frontier
Tue 4/21Mon 4/27
DCA - ONT • 1 stop
Cheapest one-way
$65
Typical prices: $169-$221
Frontier
Tue 4/21
DCA - ONT • 1 stop
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from District of Columbia to Ontario

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

Tue, Apr 21 - Mon, Apr 27
Frontier Logo
6:00 pm - 11:55 pm
DCA
-
ONT
8h 55m
1 stop
Frontier Logo
12:59 am - 4:59 pm
ONT
-
DCA
13h 00m
1 stop
$128Frontier
Sat, Apr 25 - Mon, Apr 27
Frontier Logo
6:00 pm - 11:55 pm
DCA
-
ONT
8h 55m
1 stop
Frontier Logo
12:59 am - 4:59 pm
ONT
-
DCA
13h 00m
1 stop
$134Frontier
Tue, Feb 24 - Tue, Mar 3
Frontier Logo
2:00 pm - 9:34 pm
DCA
-
ONT
10h 34m
1 stop
Frontier Logo
8:40 am - 9:59 pm
ONT
-
DCA
10h 19m
1 stop
$174Frontier
Wed, Mar 4 - Wed, Mar 11
Frontier Logo
2:00 pm - 9:34 pm
DCA
-
ONT
10h 34m
1 stop
Frontier Logo
6:15 am - 9:59 pm
ONT
-
DCA
12h 44m
1 stop
$178Frontier
Tue, Mar 3 - Thu, Mar 5
Frontier Logo
2:00 pm - 9:34 pm
DCA
-
ONT
10h 34m
1 stop
Frontier Logo
6:05 am - 4:59 pm
ONT
-
DCA
7h 54m
1 stop
$183Frontier
Tue, May 5 - Fri, May 8
Multiple Airlines Logo
7:10 am - 2:32 pm
IAD
-
ONT
10h 22m
1 stop
Multiple Airlines Logo
6:15 am - 6:19 pm
ONT
-
IAD
9h 04m
1 stop
$290Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
Delta Logo
3:35 pm - 9:00 pm
IAD
-
ONT
8h 25m
1 stop
Delta Logo
10:25 pm - 9:10 am
ONT
-
IAD
7h 45m
1 stop
$297Delta
Sat, Mar 21 - Tue, Mar 31
Delta Logo
12:14 pm - 10:48 pm
IAD
-
ONT
13h 34m
2 stops
Delta Logo
5:09 pm - 9:10 am
ONT
-
IAD
13h 01m
2 stops
$307Delta
Mon, Mar 9 - Wed, Mar 18
American Airlines Logo
5:52 pm - 11:59 pm
IAD
-
ONT
9h 07m
1 stop
American Airlines Logo
7:59 pm - 8:48 am
ONT
-
IAD
9h 49m
2 stops
$313American Airlines
Mon, Mar 9 - Wed, Mar 18
American Airlines Logo
4:46 pm - 11:59 pm
IAD
-
ONT
10h 13m
2 stops
American Airlines Logo
7:59 pm - 8:48 am
ONT
-
IAD
9h 49m
2 stops
$318American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$65
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Reagan Washington National Airport to Ontario

FAQs for booking flights from District of Columbia to Ontario

  • How does KAYAK find such low prices on flights from District of Columbia 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 District of Columbia to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from District of Columbia 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 District of Columbia 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 District of Columbia with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia 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 District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario

Ontario (ONT)