Cheap Flights from St. Marys (KSM) to Baltimore (BWI)

Popular airlines from St. Marys, AK (KSM) to Baltimore Washington Intl. Airport (BWI)

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Flights from St. Marys (KSM) to Baltimore (BWI)
Origin airport
St. Marys
Destination airport
Baltimore Washington Intl. Thurgood Marshall
Distance
3770 mi

St. Marys to Baltimore Flights

The cheapest times to fly from St. Marys to Baltimore

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

 

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

Sunday is one of the best days to book for cheap flights from St. Marys to Baltimore: 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 St. Marys to Baltimore

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 St. Marys to Baltimore 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 St. Marys to Baltimore 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 St. Marys to Baltimore 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

Is it cheaper to buy a plane ticket from KSM to BWI Airport last minute?
Booking your flight from St. Marys Airport to BWI last minute could save you money if you’re lucky to find an amazing deal. However, airfares usually don’t drop in price as the departure date nears. If you wait around, flights could also be booked out or the best seats gone (hello, middle seat!). If you’d rather not take any chances, book well in advance of when you want to leave. In fact, Expedia has some of the biggest deals up to 12 months in advance. If your favorite carrier hasn’t released its airfares yet, check back regularly as offers are updated on Expedia constantly.
What airports do you fly into for Baltimore from St. Mary's?
With Baltimore Washington Intl. Thurgood Marshall Airport (BWI), Ronald Reagan Washington National Airport (DCA) and Washington Dulles Intl. Airport (IAD) to choose from, flying from St. Mary’s to Baltimore is a breeze. The city’s main gateway, Baltimore Washington Intl. Thurgood Marshall Airport (BWI), is around 8 mi southwest of the downtown area. As well as ticket prices, consider factors like transportation options from the airport and the distance to your hotel when deciding where to touch down. Get your Baltimore vacation off on the right foot by checking out Oriole Park at Camden Yards and M&T Bank Stadium.
Can I change the date of my flight from KSM to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Quickly and easily make changes to your KSM to BWI Marshall flight via the Expedia Trips portal. Before you amend times or dates, read through the conditions and rules in your itinerary to see what you’re able to do and whether fees apply. Some carriers charge a change fee per person, plus any difference in prices. However, if you booked in the last 24 hours, you may be able to cancel for free and arrange new flights. You can also take a look at our Customer Service portal for further information and to chat with our Virtual Agent.

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