Cheap Flights from San Antonio (SAT) to Gaithersburg (GAI)

Popular airlines from San Antonio International Airport (SAT) to Gaithersburg, MD (GAI-Montgomery County Airpark)

Alternative airports near Gaithersburg

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Average driving time to city center is 38 minutes. Flights from $299
DCA
Ronald Reagan Washington National
Average driving time to city center38 min
Flights from $299
Select flight to Baltimore Washington Intl. Thurgood Marshall BWI. Cheapest option available. Average driving time to city center is 46 minutes. Flights from $178
BWI
Baltimore Washington Intl. Thurgood Marshall
Cheapest
Average driving time to city center46 min
Flights from $178
Select flight to Washington Dulles Intl. IAD. Average driving time to city center is 41 minutes. Flights from $488
IAD
Washington Dulles Intl.
Average driving time to city center41 min
Flights from $488
Flights from San Antonio (SAT) to Gaithersburg (GAI)
Origin airport
San Antonio Intl.
Destination airport
Montgomery County Airpark
Distance
1381 mi

San Antonio to Gaithersburg Flights

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

 

The best time to book a flight from San Antonio to Gaithersburg

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

 

Frequently asked questions

How much does a flight from San Antonio Intl. Airport (SAT) to Gaithersburg, MD (GAI-Montgomery County Airpark) cost?
Lock in a cheap one-way flight or cheap return flight from San Antonio Intl. Airport (SAT) 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 San Antonio Intl. Airport (SAT) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
Flying in is a great way to save, as it's the cheapest month for flights between SAT and GAI. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from San Antonio Intl. Airport (SAT) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
To find the cheapest airline flying from SAT to GAI, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from San Antonio Intl. Airport (SAT) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
Nonstop flights from San Antonio Intl. Airport (SAT) to Gaithersburg, MD (GAI-Montgomery County Airpark) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SAT to GAI?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Antonio Intl. Airport (SAT) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
To avoid potential delays on the San Antonio Intl. Airport (SAT) to Gaithersburg, MD (GAI-Montgomery County Airpark) route, aim to fly before 3 PM. Flights after this time have a 22% higher chance of cancellation.**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.
What airports do you fly into for Gaithersburg from San Antonio Intl. Airport (SAT)?
You'll touch down at Washington Dulles Intl. Airport (IAD) or Baltimore Washington Intl. Thurgood Marshall Airport (BWI) when traveling to Gaithersburg on a direct flight from San Antonio Intl. Airport (SAT).
Is it cheaper to buy a plane ticket from San Antonio Intl. Airport (SAT) to Gaithersburg, MD (GAI-Montgomery County Airpark) last-minute?
Last-minute bookings from SAT to GAI are usually more expensive. To secure the lowest prices, start searching for flights as soon as possible. That said, if you're flexible with your travel plans, you may find a cheap ticket right before your trip.
Is it cheaper to book a SAT to GAI flight and hotel package?
Compared with arranging flights and hotels separately, booking a SAT to GAI flight and hotel package with Expedia could result in significant savings. Better still, having it all in one place takes the hassle out of planning your trip. Simply pick your flights and select from our wide range of hotels, then personalize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from San Antonio Intl. Airport (SAT) to Gaithersburg, MD (GAI-Montgomery County Airpark)?
If you reserved your SAT to GAI flight in 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 if you want more information.

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*Available to One Key members.