Cheap Flights from Atlanta (PDK) to Gaithersburg (GAI)

Popular airlines from Atlanta, GA (PDK-DeKalb-Peachtree) to Gaithersburg, MD (GAI-Montgomery County Airpark)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Frequently asked questions

How much does a flight from DeKalb-Peachtree Airport (PDK) to Gaithersburg, MD (GAI-Montgomery County Airpark) cost?
Get a cheap one-way flight or cheap return flight from DeKalb-Peachtree Airport (PDK) to Gaithersburg, MD (GAI-Montgomery County Airpark) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from DeKalb-Peachtree Airport (PDK) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
The cheapest month to fly from PDK to GAI is , when there's less demand. Off-peak months are typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from DeKalb-Peachtree Airport (PDK) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
To find the cheapest airline that'll fly you from PDK to GAI, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from DeKalb-Peachtree Airport (PDK) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
There are no daily nonstop flights departing from DeKalb-Peachtree Airport (PDK) to Gaithersburg, MD (GAI-Montgomery County Airpark). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time.
What day of the week has the most flights from PDK to GAI?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember 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 DeKalb-Peachtree Airport (PDK) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
To reach Gaithersburg, MD (GAI-Montgomery County Airpark) on time, book a flight that leaves from DeKalb-Peachtree Airport (PDK) 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 DeKalb-Peachtree Airport (PDK) to Gaithersburg, MD (GAI-Montgomery County Airpark) last-minute?
Booking your ticket from PDK to GAI shortly before your journey is usually more expensive. But if you're flexible with your itinerary, you could grab a cheap last-minute fare.
Is it cheaper to book a PDK to GAI flight and hotel package?
You'll typically save money by booking a PDK to GAI flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After selecting your preferred accommodations and flights, consider adding extras including car rentals, activities and tours.
Can I cancel or change the date of my flight from DeKalb-Peachtree Airport (PDK) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
If you reserved your PDK to GAI flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

Travel information

Origin airport
DeKalb-Peachtree
Destination airport
Montgomery County Airpark
Distance
538 mi

Book with confidence

Atlanta to Gaithersburg Flights

The cheapest times to fly from Atlanta to Gaithersburg

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

 

The best time to book a flight from Atlanta to Gaithersburg

Sunday is one of the best days to book for cheap flights from Atlanta to Gaithersburg: 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 Atlanta to Gaithersburg

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 Atlanta to Gaithersburg 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 Atlanta to Gaithersburg 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 Atlanta to Gaithersburg 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.

 

Atlanta to Gaithersburg Flights

Explore a world of travel with Expedia

*Available to One Key members.