ONT

$60 Find Cheap Flights from Maryland 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 3/3. 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
$149
Typical prices: $235-$426
Frontier
Sat 2/21Tue 2/24
DCA - ONT • 1 stop
Cheapest non-stop
$337
Southwest
Wed 3/11Wed 3/18
BWI - ONT • Non-stop
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We hope you love your trip to Ontario!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Maryland to Ontario

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

Sat, Feb 21 - Tue, Feb 24
Frontier Logo
2:00 pm - 11:59 pm
DCA
-
ONT
12h 59m
1 stop
Frontier Logo
8:35 am - 1:15 pm
ONT
-
DCA
25h 40m
1 stop
$149Frontier
Sat, Feb 14 - Sun, Feb 15
Frontier Logo
6:00 pm - 11:59 pm
DCA
-
ONT
8h 59m
1 stop
Frontier Logo
6:10 am - 4:59 pm
ONT
-
DCA
7h 49m
1 stop
$158Frontier
Wed, Jan 28 - Wed, Feb 4
Frontier Logo
8:59 am - 3:07 pm
DCA
-
ONT
9h 08m
1 stop
Frontier Logo
7:15 am - 4:59 pm
ONT
-
DCA
6h 44m
1 stop
$160Frontier
Mon, Feb 16 - Thu, Feb 19
Frontier Logo
8:00 am - 11:59 pm
DCA
-
ONT
18h 59m
1 stop
Frontier Logo
6:05 am - 9:59 pm
ONT
-
DCA
12h 54m
1 stop
$161Frontier
Tue, Feb 10 - Sat, Feb 14
Frontier Logo
2:00 pm - 9:34 pm
DCA
-
ONT
10h 34m
1 stop
Frontier Logo
6:00 am - 9:59 pm
ONT
-
DCA
12h 59m
1 stop
$163Frontier
Thu, Feb 5 - Mon, Feb 9
Multiple Airlines Logo
7:58 pm - 12:43 pm
BWI
-
ONT
19h 45m
1 stop
Multiple Airlines Logo
1:46 pm - 10:27 am
ONT
-
BWI
17h 41m
1 stop
$231Multiple Airlines
Tue, Feb 17 - Sat, Feb 21
Multiple Airlines Logo
6:41 pm - 1:11 pm
BWI
-
ONT
21h 30m
2 stops
Multiple Airlines Logo
8:21 am - 11:22 am
ONT
-
BWI
24h 01m
1 stop
$235Multiple Airlines
Wed, Apr 8 - Wed, Apr 15
Delta Logo
6:01 am - 11:40 am
IAD
-
ONT
8h 39m
1 stop
Delta Logo
12:39 pm - 12:28 am
ONT
-
IAD
8h 49m
1 stop
$297Delta
Sat, Feb 7 - Sat, Feb 14
Delta Logo
6:00 am - 11:31 am
IAD
-
ONT
8h 31m
1 stop
Delta Logo
10:20 pm - 9:54 am
ONT
-
IAD
8h 34m
1 stop
$298Delta
Thu, Feb 5 - Mon, Feb 9
Southwest Logo
5:30 am - 9:50 am
IAD
-
ONT
7h 20m
1 stop
Southwest Logo
5:50 am - 4:00 pm
ONT
-
IAD
7h 10m
1 stop
$319Southwest
Useful Info

Good to know

Low seasonSeptember
Cheapest flight$60
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Reagan Washington National Airport to Ontario

FAQs for booking flights from Maryland to Ontario

  • How does KAYAK find such low prices on flights from Maryland 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 Maryland to Ontario.

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

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

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maryland 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 Maryland 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)