ONT

$98 Find Cheap Flights from Maryland to Ontario - Compare and Save

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 8/31. 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

Thu, Sep 24 - Tue, Sep 29
Frontier Logo
6:00 am - 2:37 pm
PHL
-
ONT
11h 37m
1 stop
Frontier Logo
2:55 pm - 6:15 pm
ONT
-
PHL
24h 20m
2 stops
$234Frontier
Tue, Sep 8 - Fri, Sep 11
Frontier Logo
1:24 pm - 7:01 pm
BWI
-
ONT
8h 37m
1 stop
Frontier Logo
2:55 pm - 4:12 pm
ONT
-
BWI
22h 17m
2 stops
$239Frontier
Wed, Aug 26 - Wed, Sep 2
Frontier Logo
4:45 pm - 10:04 am
PHL
-
ONT
20h 19m
2 stops
Frontier Logo
3:40 pm - 6:30 am
ONT
-
PHL
11h 50m
1 stop
$239Frontier
Thu, Sep 3 - Sat, Sep 12
Frontier Logo
7:00 am - 4:22 pm
PHL
-
ONT
12h 22m
1 stop
Frontier Logo
2:55 pm - 5:36 am
ONT
-
PHL
11h 41m
1 stop
$240Frontier
Sat, Aug 22 - Sat, Aug 29
Frontier Logo
8:37 pm - 10:04 am
PHL
-
ONT
16h 27m
1 stop
Frontier Logo
11:50 am - 6:30 am
ONT
-
PHL
15h 40m
1 stop
$241Frontier
Tue, Aug 18 - Thu, Aug 27
Frontier Logo
1:24 pm - 7:01 pm
BWI
-
ONT
8h 37m
1 stop
Frontier Logo
9:33 am - 8:37 pm
ONT
-
BWI
8h 04m
1 stop
$242Frontier
Thu, Aug 20 - Mon, Aug 24
Frontier Logo
7:00 am - 4:22 pm
PHL
-
ONT
12h 22m
1 stop
Frontier Logo
3:40 pm - 6:30 am
ONT
-
PHL
11h 50m
1 stop
$242Frontier
Mon, Aug 17 - Tue, Aug 25
Frontier Logo
4:44 pm - 7:01 pm
BWI
-
ONT
29h 17m
1 stop
Frontier Logo
10:59 am - 8:37 pm
ONT
-
BWI
30h 38m
1 stop
$243Frontier
Thu, Aug 13 - Wed, Aug 19
Frontier Logo
11:06 am - 3:54 pm
PHL
-
ONT
7h 48m
1 stop
Frontier Logo
3:40 pm - 6:30 am
ONT
-
PHL
11h 50m
1 stop
$244Frontier
Thu, Aug 20 - Thu, Aug 27
Multiple Airlines Logo
6:00 pm - 11:50 pm
DCA
-
ONT
8h 50m
1 stop
Multiple Airlines Logo
10:47 am - 4:00 pm
ONT
-
DCA
26h 13m
1 stop
$297Multiple Airlines
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Good to know

Low season

January

Cheapest flight

$98
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Washington Dulles 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)