Cheap Flights from Spokane (GEG) to St. Marys (KSM)

Popular airlines from Spokane International Airport (GEG) to St. Marys, AK (KSM)

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Frequently asked questions

How much does a flight from Spokane Intl. Airport (GEG) to St. Marys Airport (KSM) cost?
Snag a cheap one-way flight or cheap return flight from Spokane Intl. Airport (GEG) 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 Spokane Intl. Airport (GEG) to St. Marys Airport (KSM)?
Flying in is a great way to save, as it's the cheapest month for flights between GEG and KSM. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Spokane Intl. Airport (GEG) to St. Marys Airport (KSM)?
To find the cheapest airline that'll fly you from GEG to KSM, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Spokane Intl. Airport (GEG) to St. Marys Airport (KSM)?
Nonstop flights from Spokane Intl. Airport (GEG) to St. Marys Airport (KSM) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from GEG to KSM?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Spokane Intl. Airport (GEG) to St. Marys Airport (KSM)?
To reach St. Marys Airport (KSM) without delays, opt for a flight that leaves from Spokane Intl. Airport (GEG) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Spokane Intl. Airport (GEG) to St. Marys Airport (KSM) last-minute?
Last-minute bookings from GEG to KSM are typically more expensive. For the lowest prices, start looking for flights well ahead of time. That said, if you're flexible with your travel plans, it's possible to land a cheap fare right before your journey.
Is it cheaper to book a GEG to KSM flight and hotel package?
Booking a GEG to KSM flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Choose from our extensive range of hotels and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Spokane Intl. Airport (GEG) to St. Marys Airport (KSM)?
In most instances, you're able to reschedule or cancel your GEG to KSM flight. However, additional fees may apply, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you want further information, go to our Customer Service portal.

Travel information

Origin airport
Spokane Intl.
Destination airport
St. Marys
Distance
2015 mi

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Spokane to St. Marys Flights

The cheapest times to fly from Spokane 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 Spokane to St. Marys are during the month of . You can find some of the cheapest flights from Spokane to St. Marys with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Spokane 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 Spokane 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 Spokane to St. Marys in 2025. 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 Spokane 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 Spokane 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.

 

Spokane to St. Marys Flights

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*Available to One Key members.