Cheap Flights from Washington (IAD) to Gaithersburg (GAI)

Popular airlines from Washington Dulles Intl. Airport (IAD) to Gaithersburg, MD (GAI-Montgomery County Airpark)

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Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Gaithersburg, MD (GAI-Montgomery County Airpark) cost?
Grab a cheap one-way flight or cheap return flight from Washington Dulles Intl. Airport (IAD) 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 deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
is the least expensive month to fly from IAD to GAI. Traveling during an off-peak travel window is often the key to landing a great deal.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
To find the cheapest airline that'll fly you from IAD to GAI, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
You'll need to book a flight with a layover when traveling from Washington Dulles Intl. Airport (IAD) to Gaithersburg, MD (GAI-Montgomery County Airpark). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from IAD to GAI?
You'll typically 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 Washington Dulles Intl. Airport (IAD) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
To avoid potential delays on the Washington Dulles Intl. Airport (IAD) to Gaithersburg, MD (GAI-Montgomery County Airpark) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**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 Washington Dulles Intl. Airport (IAD) to Gaithersburg, MD (GAI-Montgomery County Airpark) last-minute?
Booking your plane ticket from IAD to GAI right before your journey is typically more expensive. However, if you're flexible with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book an IAD to GAI flight and hotel package?
Booking an IAD to GAI flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Choose from our wide range of stays and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
If you reserved your IAD 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 this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Montgomery County Airpark
Distance
21 mi

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Washington to Gaithersburg Flights

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

 

The best time to book a flight from Washington to Gaithersburg

Sunday is one of the best days to book for cheap flights from Washington 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 Washington 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 Washington 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 Washington 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 Washington 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.

 

Washington to Gaithersburg Flights

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