Cheap Flights from Guam (GUM) to Porto (OPO)

Popular airlines from Barrigada - A.B. Won Pat International Airport (GUM) to Porto Airport (OPO)

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Flights from Guam (GUM) to Porto (OPO)
Origin airport
A.B. Won Pat Intl.
Destination airport
Dr. Francisco de Sa Carneiro
Distance
8292 mi

Guam to Porto Flights

The cheapest times to fly from Guam to Porto

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

 

The best time to book a flight from Guam to Porto

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

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 Porto 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 Guam to Porto 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 Porto 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 Dr. Francisco de Sa Carneiro Airport (OPO) cost?
Discover the latest flight deals from GUM to OPO 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 OPO?
The cheapest flights from GUM to OPO 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 OPO?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from GUM to OPO. 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 Dr. Francisco de Sa Carneiro Airport (OPO)?
Nonstop flights from A.B. Won Pat Intl. Airport (GUM) to Dr. Francisco de Sa Carneiro Airport (OPO) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and click on either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from GUM to OPO?
Generally you’ll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the airline, season 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 Dr. Francisco de Sa Carneiro Airport (OPO)?
Book a flight from A.B. Won Pat Intl. Airport (GUM) to Dr. Francisco de Sa Carneiro Airport (OPO) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time are on average 22% more likely to be 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 Dr. Francisco de Sa Carneiro Airport (OPO) last-minute?
Booking your flight from GUM to OPO right before your trip is generally more expensive. However, if you’re flexible with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a GUM to OPO flight and hotel package?
Booking a GUM to OPO flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Choose from our extensive range of accommodations and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from A.B. Won Pat Intl. Airport (GUM) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Usually, it’s possible to reschedule or cancel your GUM to OPO flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline’s policies in your itinerary to see what changes are possible and whether any costs are involved. You’ll also find more details on our Customer Service portal.

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*Available to One Key members.