ONT

$71 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 1/14. 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
$182
Typical prices: $401-$542
Frontier
Mon 12/8Mon 12/15
PHL - ONT • 1 stop
Cheapest non-stop
$575
Southwest
Thu 12/18Mon 12/22
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

Mon, Dec 8 - Mon, Dec 15
Frontier Logo
6:15 am - 4:33 pmPHL-ONT
13h 18m1 stop
Frontier Logo
3:20 pm - 5:31 amONT-PHL
11h 11m1 stop
$182Frontier
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Thu, Jan 1 - Thu, Jan 8
Frontier Logo
7:10 am - 5:22 pmPHL-ONT
13h 12m1 stop
Frontier Logo
6:00 am - 11:46 amONT-PHL
26h 46m1 stop
$183Frontier
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Thu, Jan 22 - Thu, Jan 29
Multiple Airlines Logo
7:58 pm - 12:43 pmBWI-ONT
19h 45m1 stop
Multiple Airlines Logo
6:00 am - 6:14 pmONT-BWI
9h 14m1 stop
$268Multiple Airlines
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Wed, Feb 18 - Sat, Feb 21
American Airlines Logo
6:00 am - 4:24 pmBWI-ONT
13h 24m1 stop
American Airlines Logo
7:10 am - 10:57 pmONT-BWI
12h 47m1 stop
$285American Airlines
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Tue, Feb 24 - Tue, Mar 3
Delta Logo
6:00 am - 12:02 pmBWI-ONT
9h 02m1 stop
Delta Logo
10:20 pm - 9:23 amONT-BWI
8h 03m1 stop
$286Delta
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Tue, Feb 24 - Sat, Feb 28
Delta Logo
7:05 am - 12:07 pmBWI-ONT
8h 02m1 stop
Delta Logo
10:20 pm - 9:23 amONT-BWI
8h 03m1 stop
$287Delta
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Thu, Jan 8 - Mon, Jan 12
Alaska Airlines Logo
6:04 pm - 10:59 amIAD-ONT
19h 55m1 stop
Alaska Airlines Logo
4:03 pm - 4:26 pmONT-IAD
21h 23m1 stop
$306Alaska Airlines
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Wed, Feb 18 - Sat, Feb 21
American Airlines Logo
6:00 am - 1:56 pmIAD-ONT
10h 56m1 stop
American Airlines Logo
6:10 am - 4:31 pmONT-IAD
7h 21m1 stop
$319American Airlines
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Sat, Jan 17 - Tue, Jan 20
Alaska Airlines Logo
6:04 pm - 10:59 amIAD-ONT
19h 55m1 stop
Alaska Airlines Logo
11:53 am - 4:26 pmONT-IAD
25h 33m1 stop
$326Alaska Airlines
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Sun, Jan 18 - Sun, Jan 25
Multiple Airlines Logo
11:00 am - 7:01 pmIAD-ONT
11h 01m1 stop
Multiple Airlines Logo
6:00 am - 5:04 pmONT-IAD
32h 04m2 stops
$329Multiple Airlines
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Useful Info

Good to know

Low seasonFebruary
Cheapest flight$71
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 11% 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)