$641 Cheap Flights from Guam (GUM) to San Antonio (SAT)

View $641 flight on Mon, Jan 12, 2026Opens in a new window

Popular airlines from Barrigada - A.B. Won Pat International Airport (GUM) to San Antonio International Airport (SAT)

Cheap Flights from Guam to San Antonio (GUM-SAT)

Prices were available within the past 7 days and start at $641 for one-way flights and $1,374 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Korean Air
Fri, Feb 6 - Tue, Feb 17
GUM
Guam
SAT
San Antonio
$1,374 Roundtrip, found 6 days ago
$1,374
Roundtrip
found 6 days ago
Select Korean Air flight, departing Fri, Feb 6 from Guam to San Antonio, returning Tue, Feb 17, priced at $1,374 found 6 days ago
Korean Air
Thu, Oct 30 - Wed, Nov 5
GUM
Guam
SAT
San Antonio
$1,376 Roundtrip, found 14 hours ago
$1,376
Roundtrip
found 14 hours ago
Select Korean Air flight, departing Thu, Oct 30 from Guam to San Antonio, returning Wed, Nov 5, priced at $1,376 found 14 hours ago
Korean Air
Sun, Feb 1 - Tue, Feb 17
GUM
Guam
SAT
San Antonio
$1,424 Roundtrip, found 6 days ago
$1,424
Roundtrip
found 6 days ago
Select Korean Air flight, departing Sun, Feb 1 from Guam to San Antonio, returning Tue, Feb 17, priced at $1,424 found 6 days ago
Korean Air
Thu, Oct 30 - Sun, Nov 9
GUM
Guam
SAT
San Antonio
$1,426 Roundtrip, found 14 hours ago
$1,426
Roundtrip
found 14 hours ago
Select Korean Air flight, departing Thu, Oct 30 from Guam to San Antonio, returning Sun, Nov 9, priced at $1,426 found 14 hours ago
Korean Air
Sun, Nov 2 - Sun, Nov 9
GUM
Guam
SAT
San Antonio
$1,476 Roundtrip, found 14 hours ago
$1,476
Roundtrip
found 14 hours ago
Select Korean Air flight, departing Sun, Nov 2 from Guam to San Antonio, returning Sun, Nov 9, priced at $1,476 found 14 hours ago
Delta
Mon, Jan 26 - Mon, Feb 9
GUM
Guam
SAT
San Antonio
$1,554 Roundtrip, found 1 hour ago
$1,554
Roundtrip
found 1 hour ago
Select Delta flight, departing Mon, Jan 26 from Guam to San Antonio, returning Mon, Feb 9, priced at $1,554 found 1 hour ago
Korean Air
Mon, Jan 26 - Mon, Feb 9
GUM
Guam
SAT
San Antonio
$1,556 Roundtrip, found 1 hour ago
$1,556
Roundtrip
found 1 hour ago
Select Korean Air flight, departing Mon, Jan 26 from Guam to San Antonio, returning Mon, Feb 9, priced at $1,556 found 1 hour ago
Delta
Mon, Jan 26 - Mon, Feb 9
GUM
Guam
SAT
San Antonio
$1,563 Roundtrip, found 1 hour ago
$1,563
Roundtrip
found 1 hour ago
Select Delta flight, departing Mon, Jan 26 from Guam to San Antonio, returning Mon, Feb 9, priced at $1,563 found 1 hour ago
Delta
Mon, Jan 26 - Mon, Feb 9
GUM
Guam
SAT
San Antonio
$1,564 Roundtrip, found 1 hour ago
$1,564
Roundtrip
found 1 hour ago
Select Delta flight, departing Mon, Jan 26 from Guam to San Antonio, returning Mon, Feb 9, priced at $1,564 found 1 hour ago
United
Mon, Mar 2 - Tue, Mar 31
GUM
Guam
SAT
San Antonio
$1,578 Roundtrip, found 6 days ago
$1,578
Roundtrip
found 6 days ago
Select United flight, departing Mon, Mar 2 from Guam to San Antonio, returning Tue, Mar 31, priced at $1,578 found 6 days ago

Frequently asked questions

How much does a flight from A.B. Won Pat Intl. Airport (GUM) to San Antonio Intl. Airport (SAT) cost?
Secure a cheap one-way flight from $641 or cheap return flight from $1,374 from A.B. Won Pat Intl. Airport (GUM) to San Antonio Intl. Airport (SAT) 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 A.B. Won Pat Intl. Airport (GUM) to San Antonio Intl. Airport (SAT)?
February is the least expensive month to fly from GUM to SAT. Avoiding peak travel times is often the key to landing a great deal.
What is the cheapest airline that flies from A.B. Won Pat Intl. Airport (GUM) to San Antonio Intl. Airport (SAT)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll take you from GUM to SAT. Then, sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from A.B. Won Pat Intl. Airport (GUM) to San Antonio Intl. Airport (SAT)?
You'll need to catch a flight with a layover if you're traveling from A.B. Won Pat Intl. Airport (GUM) to San Antonio Intl. Airport (SAT). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from GUM to SAT?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on various factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from A.B. Won Pat Intl. Airport (GUM) to San Antonio Intl. Airport (SAT)?
To touch down at San Antonio Intl. Airport (SAT) on schedule, pick a flight that leaves from A.B. Won Pat Intl. Airport (GUM) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 A.B. Won Pat Intl. Airport (GUM) to San Antonio Intl. Airport (SAT) last-minute?
Holding off until right before your break to book a ticket from GUM to SAT generally means paying more. Although you may find some last-minute offers, they aren't always guaranteed. Be flexible with your itinerary for a better chance of scoring a bargain.
Is it cheaper to book a GUM to SAT flight and hotel package?
You'll typically save money by booking a GUM to SAT 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 everything in one convenient place. After selecting your preferred accommodations and flights, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from A.B. Won Pat Intl. Airport (GUM) to San Antonio Intl. Airport (SAT)?
If you booked your GUM to SAT flight within the last 24 hours, you may be able to modify or cancel it without any 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, visit our Customer Service portal if you'd like more information.

Travel information

Origin airport
A.B. Won Pat Intl.
Destination airport
San Antonio Intl.
Distance
7281 mi

Book with confidence

Guam to San Antonio Flights

The cheapest times to fly from Guam to San Antonio

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

 

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

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

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 Guam to San Antonio in 2025. You can also book with separate airlines for your outbound and return journeys, from $641 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 Guam to San Antonio 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 Guam to San Antonio 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.

 

Guam to San Antonio Flights

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*Available to One Key members.