$185 Cheap Flights from Great Falls (GTF) to Baltimore (BWI)

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Find available prices by choosing your travel dates.

Cheap Flights from Great Falls to Baltimore (GTF-BWI)

Prices were available within the past 7 days and start at $185 for one-way flights and $393 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Delta
Delta
Delta
Delta
Delta
Delta
United
Alaska Airlines
Hawaiian Airlines
Flights from Great Falls (GTF) to Baltimore (BWI)
Origin airport
Great Falls Intl.
Destination airport
Baltimore Washington Intl. Thurgood Marshall
Airlines serving
Alaska Airlines, Delta, United
Roundtrip price
$393
Distance
1817 mi

Great Falls to Baltimore Flights

The cheapest times to fly from Great Falls 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 Great Falls to Baltimore are during the month of May. You can find some of the cheapest flights from Great Falls to Baltimore with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Great Falls to Baltimore

Sunday is one of the best days to book for cheap flights from Great Falls 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 Great Falls 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 Great Falls to Baltimore in 2025. You can also book with separate airlines for your outbound and return journeys, from $185 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 Great Falls 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 Great Falls 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 GTF to BWI Marshall last minute?
Being the spontaneous type is a wonderful way to travel the globe, but it’s not always the smartest way to pick up a bargain fare. Think about booking your GTF to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) journey in advance rather than waiting till the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. We recommend saving that spontaneity for when you get to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)!
What airports do you fly into for Baltimore from Great Falls?
From Great Falls, you can travel to Baltimore through Baltimore Washington Intl. Thurgood Marshall Airport (BWI), Ronald Reagan Washington National Airport (DCA) and Washington Dulles Intl. Airport (IAD). Do some research into which terminal is best for you before making your decision. If you go with Baltimore Washington Intl. Thurgood Marshall Airport (BWI), it’s approximately 8 mi southwest of the center of the city. Use the dollars you save when booking your seat with Expedia to uncover the city’s awesome attractions, such as Oriole Park at Camden Yards and M&T Bank Stadium.
Can I change the date of my flight from Great Falls Intl. Airport (GTF) to BWI?
It’s a breeze to make amendments to your Great Falls Intl. Airport (GTF) to BWI journey yourself. Log in to the Expedia Trips portal and hit “change flight.” Search for new flights and book the one that works with your new plans. You’ll see an estimate of any flight change costs. Alternatively, head to our Customer Service portal to chat to our Virtual Agent and quickly get answers to your questions.

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*Available to One Key members.