Cheap Flights from Ontario (ONT) to St. Marys (KSM)

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to St. Marys, AK (KSM)

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Flights from Ontario (ONT) to St. Marys (KSM)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
St. Marys
Distance
2762 mi

Ontario to St. Marys Flights

The cheapest times to fly from Ontario to St. Marys

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to St. Marys are during the month of . You can find some of the cheapest flights from Ontario to St. Marys with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to St. Marys

Sunday is one of the best days to book for cheap flights from Ontario to St. Marys: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to St. Marys

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to St. Marys in 2026. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to St. Marys flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to St. Marys airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to St. Marys Airport (KSM) cost?
Snag a cheap one-way flight or cheap return flight from Los Angeles - Ontario Intl. Airport (ONT) to St. Marys Airport (KSM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Los Angeles - Ontario Intl. Airport (ONT) to St. Marys Airport (KSM)?
is the least expensive month to fly from ONT to KSM. Traveling during quieter months is often the key to scoring lower fares.
What is the cheapest airline that flies from Los Angeles - Ontario Intl. Airport (ONT) to St. Marys Airport (KSM)?
To find the cheapest airline that'll fly you from ONT to KSM, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to St. Marys Airport (KSM)?
There are no daily direct flights from Los Angeles - Ontario Intl. Airport (ONT) to St. Marys Airport (KSM). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way in no time at all.
What day of the week has the most flights from ONT to KSM?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to St. Marys Airport (KSM)?
To avoid possible delays on the Los Angeles - Ontario Intl. Airport (ONT) to St. Marys Airport (KSM) route, aim to fly before 3 PM. Later departures have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to St. Marys Airport (KSM) last-minute?
Last-minute bookings from ONT to KSM are typically more expensive. For the best rates, start looking for flights well ahead of time. That being said, if you're flexible with your travel dates, you may find a cheap fare right before your trip.
Is it cheaper to book an ONT to KSM flight and hotel package?
You can save money by booking an ONT to KSM flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After selecting your ideal flights and accommodations, consider adding extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to St. Marys Airport (KSM)?
If you booked your ONT to KSM flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

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