$1,257 Cheap Flights from Guam (GUM) to San Diego (SAN)

View $1,257 flight on Sun, Aug 31, 2025Opens in a new window

Popular airlines from Barrigada - A.B. Won Pat International Airport (GUM) to San Diego Intl. Airport (SAN)

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Find available prices by choosing your travel dates.

Cheap Flights from Guam to San Diego (GUM-SAN)

Prices were available within the past 7 days and start at $1,257 for one-way flights and $1,378 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Oct 9 - Mon, Oct 20
GUM
Guam
SAN
San Diego
$1,378 Roundtrip, found 9 hours ago
$1,378
Roundtrip
found 9 hours ago
Select United flight, departing Thu, Oct 9 from Guam to San Diego, returning Mon, Oct 20, priced at $1,378 found 9 hours ago
United
Wed, Oct 8 - Mon, Oct 27
GUM
Guam
SAN
San Diego
$1,381 Roundtrip, found 2 days ago
$1,381
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 8 from Guam to San Diego, returning Mon, Oct 27, priced at $1,381 found 2 days ago
United
Thu, Oct 9 - Mon, Oct 20
GUM
Guam
SAN
San Diego
$1,384 Roundtrip, found 9 hours ago
$1,384
Roundtrip
found 9 hours ago
Select United flight, departing Thu, Oct 9 from Guam to San Diego, returning Mon, Oct 20, priced at $1,384 found 9 hours ago
United
Thu, Oct 9 - Mon, Oct 20
GUM
Guam
SAN
San Diego
$1,391 Roundtrip, found 9 hours ago
$1,391
Roundtrip
found 9 hours ago
Select United flight, departing Thu, Oct 9 from Guam to San Diego, returning Mon, Oct 20, priced at $1,391 found 9 hours ago
Delta
Sun, Nov 9 - Mon, Nov 24
GUM
Guam
SAN
San Diego
$1,392 Roundtrip, found 2 days ago
$1,392
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Nov 9 from Guam to San Diego, returning Mon, Nov 24, priced at $1,392 found 2 days ago
United
Thu, Oct 9 - Mon, Oct 20
GUM
Guam
SAN
San Diego
$1,392 Roundtrip, found 9 hours ago
$1,392
Roundtrip
found 9 hours ago
Select United flight, departing Thu, Oct 9 from Guam to San Diego, returning Mon, Oct 20, priced at $1,392 found 9 hours ago
United
Thu, Oct 9 - Mon, Oct 20
GUM
Guam
SAN
San Diego
$1,398 Roundtrip, found 9 hours ago
$1,398
Roundtrip
found 9 hours ago
Select United flight, departing Thu, Oct 9 from Guam to San Diego, returning Mon, Oct 20, priced at $1,398 found 9 hours ago
United
Thu, Oct 9 - Mon, Oct 20
GUM
Guam
SAN
San Diego
$1,399 Roundtrip, found 9 hours ago
$1,399
Roundtrip
found 9 hours ago
Select United flight, departing Thu, Oct 9 from Guam to San Diego, returning Mon, Oct 20, priced at $1,399 found 9 hours ago
United
Mon, Nov 3 - Thu, Nov 20
GUM
Guam
SAN
San Diego
$1,403 Roundtrip, found 2 days ago
$1,403
Roundtrip
found 2 days ago
Select United flight, departing Mon, Nov 3 from Guam to San Diego, returning Thu, Nov 20, priced at $1,403 found 2 days ago
United
Thu, Oct 9 - Mon, Oct 20
GUM
Guam
SAN
San Diego
$1,405 Roundtrip, found 9 hours ago
$1,405
Roundtrip
found 9 hours ago
Select United flight, departing Thu, Oct 9 from Guam to San Diego, returning Mon, Oct 20, priced at $1,405 found 9 hours ago
Flights from Guam (GUM) to San Diego (SAN)
Origin airport
A.B. Won Pat Intl.
Destination airport
San Diego Intl.
Airlines serving
Delta, United
Roundtrip price
$1,377
Distance
6169 mi

Guam to San Diego Flights

The cheapest times to fly from Guam to San Diego

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

 

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

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

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 Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,257 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 Diego 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 Diego 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 A.B. Won Pat Intl. Airport (GUM) to San Diego Intl. Airport (SAN) cost?
Discover the latest flight deals from GUM to SAN by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from GUM to SAN?
The cheapest flights from GUM to SAN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from GUM to SAN?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from GUM to SAN. 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 Diego Intl. Airport (SAN)?
You’ll need to book a flight with a layover if you’re traveling from A.B. Won Pat Intl. Airport (GUM) to San Diego Intl. Airport (SAN). Direct flights don’t operate daily 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 SAN?
Generally you’ll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the airline, time of year and other factors.*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 Diego Intl. Airport (SAN)?
To avoid potential delays on the A.B. Won Pat Intl. Airport (GUM) to San Diego Intl. Airport (SAN) route, aim to fly before 3 PM. Departures after this time 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 A.B. Won Pat Intl. Airport (GUM) to San Diego Intl. Airport (SAN) last-minute?
Holding off until just before your departure to book your flight from GUM to SAN generally means paying more. While you may find some last-minute discounts, there’s no guarantee. Keep your travel schedule open for a better chance of snagging a bargain.
Is it cheaper to book a GUM to SAN flight and hotel package?
You can save money by securing a GUM to SAN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s simple to manage everything in one convenient place. Once you’ve chosen your preferred accommodations and flights, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from A.B. Won Pat Intl. Airport (GUM) to San Diego Intl. Airport (SAN)?
If you reserved your GUM to SAN flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the fare type you purchased, 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 want more information.

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*Available to One Key members.