ONT

$62 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 4/13. 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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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, Apr 18 - Fri, Apr 24
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
$138Frontier
Tue, Apr 14 - Mon, Apr 20
Frontier Logo
8:41 pm - 11:55 pm
PHL
-
ONT
30h 14m
1 stop
Frontier Logo
12:59 am - 5:34 am
ONT
-
PHL
25h 35m
1 stop
$142Frontier
Wed, Apr 15 - Tue, Apr 21
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
$167Frontier
Tue, Apr 14 - Mon, Apr 20
Frontier Logo
1:30 pm - 11:55 pm
PHL
-
ONT
13h 25m
2 stops
Frontier Logo
12:59 am - 5:34 am
ONT
-
PHL
25h 35m
1 stop
$177Frontier
Tue, Apr 14 - Wed, Apr 15
Frontier Logo
1:59 pm - 11:55 pm
DCA
-
ONT
12h 56m
1 stop
Frontier Logo
12:59 am - 1:00 pm
ONT
-
DCA
9h 01m
1 stop
$180Frontier
Fri, Apr 17 - Sun, Apr 19
Multiple Airlines Logo
11:05 am - 4:38 pm
BWI
-
ONT
8h 33m
1 stop
Multiple Airlines Logo
8:21 am - 10:27 am
ONT
-
BWI
23h 06m
1 stop
$210Multiple Airlines
Thu, Apr 23 - Mon, Apr 27
Multiple Airlines Logo
11:05 am - 4:38 pm
BWI
-
ONT
8h 33m
1 stop
Multiple Airlines Logo
12:59 am - 12:44 am
ONT
-
BWI
20h 45m
2 stops
$212Multiple Airlines
Tue, Apr 21 - Wed, Apr 29
Alaska Airlines Logo
7:11 pm - 9:45 am
IAD
-
ONT
17h 34m
1 stop
Alaska Airlines Logo
10:39 am - 12:09 am
ONT
-
IAD
10h 30m
1 stop
$265Alaska Airlines
Tue, Apr 7 - Tue, Apr 14
Delta Logo
7:20 am - 12:23 pm
IAD
-
ONT
8h 03m
1 stop
Delta Logo
1:29 pm - 11:44 pm
ONT
-
IAD
7h 15m
1 stop
$279Delta
Wed, Apr 22 - Tue, Apr 28
Alaska Airlines Logo
7:10 am - 2:32 pm
IAD
-
ONT
10h 22m
1 stop
Alaska Airlines Logo
6:00 am - 12:09 am
ONT
-
IAD
15h 09m
1 stop
$285Alaska Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$62
Most popular time to fly with an average 1% increase in price.
Flight from Philadelphia 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)