Cheap Flights from Rochester (RST) to St. Marys (KSM)

Popular airlines from Rochester, MN (RST-Rochester Intl.) to St. Marys, AK (KSM)

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Flights from Rochester (RST) to St. Marys (KSM)
Origin airport
Rochester Intl.
Destination airport
St. Marys
Distance
3013 mi

Rochester to St. Marys Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Rochester 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 Rochester 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 Rochester 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 Rochester 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 Rochester 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 Rochester Intl. Airport (RST) to St. Marys Airport (KSM) cost?
Grab a cheap one-way flight or cheap return flight from Rochester Intl. Airport (RST) 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 Rochester Intl. Airport (RST) to St. Marys Airport (KSM)?
is the cheapest month to fly from RST to KSM. Timing your trip outside of the busy season is often the key to landing a great deal.
What is the cheapest airline that flies from Rochester Intl. Airport (RST) to St. Marys Airport (KSM)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest RST to KSM flight.
How many flights per day from Rochester Intl. Airport (RST) to St. Marys Airport (KSM)?
Direct flights from Rochester Intl. Airport (RST) to St. Marys Airport (KSM) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from RST to KSM?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can change depending 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 Rochester Intl. Airport (RST) to St. Marys Airport (KSM)?
To arrive at St. Marys Airport (KSM) without delays, select a flight that takes off from Rochester Intl. Airport (RST) 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 Rochester Intl. Airport (RST) to St. Marys Airport (KSM) last-minute?
Booking your flight from RST to KSM just before your journey is typically more expensive. However, if there's some wiggle room with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book a RST to KSM flight and hotel package?
Compared with arranging hotels and flights separately, booking a RST to KSM flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one place takes the hassle out of travel planning. Just pick your flights and choose from our wide range of stays, then tailor your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Rochester Intl. Airport (RST) to St. Marys Airport (KSM)?
It's usually possible to reschedule or cancel your RST to KSM flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

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