Cheap Flights from San Diego (SAN) to St. Marys (KSM)

Popular airlines from San Diego Intl. Airport (SAN) to St. Marys, AK (KSM)

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Flights from San Diego (SAN) to St. Marys (KSM)
Origin airport
San Diego Intl.
Destination airport
St. Marys
Distance
2852 mi

San Diego to St. Marys Flights

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

 

The best time to book a flight from San Diego to St. Marys

Sunday is one of the best days to book for cheap flights from San Diego 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 San Diego 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 San Diego 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 San Diego 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 San Diego 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 San Diego Intl. Airport (SAN) to St. Marys Airport (KSM) cost?
Lock in a cheap one-way flight or cheap return flight from San Diego Intl. Airport (SAN) 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 San Diego Intl. Airport (SAN) to St. Marys Airport (KSM)?
is the least expensive month to fly from SAN to KSM. Avoiding peak travel times is often the key to better flight prices.
What is the cheapest airline that flies from San Diego Intl. Airport (SAN) to St. Marys Airport (KSM)?
To find the cheapest airline flying from SAN to KSM, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from San Diego Intl. Airport (SAN) to St. Marys Airport (KSM)?
There aren't any daily direct flights available from San Diego Intl. Airport (SAN) to St. Marys Airport (KSM). But you can opt for flights with layovers. Filter your search 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 SAN to KSM?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Diego Intl. Airport (SAN) to St. Marys Airport (KSM)?
To arrive at St. Marys Airport (KSM) on time, book a flight that takes off from San Diego Intl. Airport (SAN) before 3 PM. The likelihood 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 San Diego Intl. Airport (SAN) to St. Marys Airport (KSM) last-minute?
Last-minute bookings from SAN to KSM are usually more expensive. To lock in the cheapest rates, start searching for flights well in advance. That said, if you're flexible with your travel plans, you may land a cheap fare right before your journey.
Is it cheaper to book a SAN to KSM flight and hotel package?
You'll typically save money by booking a SAN to KSM flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After choosing your preferred accommodations and flights, consider other add-ons like car rentals, tours and activities.
Can I cancel or change the date of my flight from San Diego Intl. Airport (SAN) to St. Marys Airport (KSM)?
You can usually reschedule or cancel your SAN to KSM flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

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