ONT

$79 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 5/13. 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

Tue, May 12 - Thu, May 14
Frontier Logo
4:31 pm - 7:35 am
BWI
-
ONT
18h 04m
1 stop
Frontier Logo
8:06 pm - 8:18 pm
ONT
-
BWI
21h 12m
1 stop
$160Frontier
Tue, May 12 - Wed, May 13
Frontier Logo
4:31 pm - 7:35 am
BWI
-
ONT
18h 04m
1 stop
Frontier Logo
8:06 pm - 8:18 pm
ONT
-
BWI
21h 12m
1 stop
$172Frontier
Wed, May 6 - Tue, May 12
Frontier Logo
5:17 pm - 7:35 am
BWI
-
ONT
17h 18m
1 stop
Frontier Logo
8:06 pm - 8:18 pm
ONT
-
BWI
21h 12m
1 stop
$180Frontier
Sat, May 9 - Tue, May 12
Frontier Logo
1:59 pm - 11:49 pm
DCA
-
ONT
12h 50m
1 stop
Frontier Logo
10:50 am - 9:58 pm
ONT
-
DCA
8h 08m
1 stop
$180Frontier
Sat, May 9 - Wed, May 13
Frontier Logo
5:34 pm - 7:35 am
BWI
-
ONT
17h 01m
1 stop
Frontier Logo
8:06 pm - 8:18 pm
ONT
-
BWI
21h 12m
1 stop
$182Frontier
Mon, May 11 - Wed, May 13
Frontier Logo
5:17 pm - 7:35 am
BWI
-
ONT
17h 18m
1 stop
Frontier Logo
8:06 pm - 8:18 pm
ONT
-
BWI
21h 12m
1 stop
$185Frontier
Tue, May 26 - Tue, Jun 2
Frontier Logo
9:12 am - 3:44 pm
IAD
-
ONT
9h 32m
1 stop
Frontier Logo
4:39 pm - 8:12 am
ONT
-
IAD
12h 33m
1 stop
$185Frontier
Tue, May 12 - Tue, May 19
Frontier Logo
4:31 pm - 7:35 am
BWI
-
ONT
18h 04m
1 stop
Frontier Logo
8:06 pm - 8:18 pm
ONT
-
BWI
21h 12m
1 stop
$190Frontier
Tue, May 12 - Tue, May 19
American Airlines Logo
5:00 am - 11:34 am
PHL
-
ONT
9h 34m
2 stops
American Airlines Logo
4:52 pm - 5:38 am
ONT
-
PHL
9h 46m
1 stop
$282American Airlines
Sat, Aug 15 - Thu, Aug 27
United Airlines Logo
1:31 pm - 6:19 pm
PHL
-
ONT
7h 48m
1 stop
United Airlines Logo
7:13 pm - 9:43 am
ONT
-
PHL
11h 30m
2 stops
$289United Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$79
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 13% lower on average.
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)