$767 Cheap Flights from Guam (GUM) to Lisbon (LIS)

View $767 flight on Fri, Dec 26, 2025Opens in a new window

Popular airlines from Barrigada - A.B. Won Pat International Airport (GUM) to Humberto Delgado Airport (LIS)

Cheap Flights from Guam to Lisbon (GUM-LIS)

Prices were available within the past 7 days and start at $767 for one-way flights and $2,076 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Fri, Dec 26 - Sun, Jan 4
GUM
Guam
LIS
Lisbon
$2,076 Roundtrip, found 17 hours ago
$2,076
Roundtrip
found 17 hours ago
Select Philippine Airlines flight, departing Fri, Dec 26 from Guam to Lisbon, returning Sun, Jan 4, priced at $2,076 found 17 hours ago
Korean Air
Sun, Dec 28 - Wed, Jan 7
GUM
Guam
LIS
Lisbon
$2,082 Roundtrip, found 18 hours ago
$2,082
Roundtrip
found 18 hours ago
Select Korean Air flight, departing Sun, Dec 28 from Guam to Lisbon, returning Wed, Jan 7, priced at $2,082 found 18 hours ago
Korean Air
Sun, Dec 28 - Wed, Jan 7
GUM
Guam
LIS
Lisbon
$2,332 Roundtrip, found 18 hours ago
$2,332
Roundtrip
found 18 hours ago
Select Korean Air flight, departing Sun, Dec 28 from Guam to Lisbon, returning Wed, Jan 7, priced at $2,332 found 18 hours ago
Korean Air
Wed, Dec 24 - Wed, Jan 7
GUM
Guam
LIS
Lisbon
$2,382 Roundtrip, found 18 hours ago
$2,382
Roundtrip
found 18 hours ago
Select Korean Air flight, departing Wed, Dec 24 from Guam to Lisbon, returning Wed, Jan 7, priced at $2,382 found 18 hours ago
Korean Air
Fri, Dec 26 - Sun, Jan 4
GUM
Guam
LIS
Lisbon
$2,432 Roundtrip, found 17 hours ago
$2,432
Roundtrip
found 17 hours ago
Select Korean Air flight, departing Fri, Dec 26 from Guam to Lisbon, returning Sun, Jan 4, priced at $2,432 found 17 hours ago
Korean Air
Fri, Dec 26 - Sun, Jan 4
GUM
Guam
LIS
Lisbon
$2,532 Roundtrip, found 18 hours ago
$2,532
Roundtrip
found 18 hours ago
Select Korean Air flight, departing Fri, Dec 26 from Guam to Lisbon, returning Sun, Jan 4, priced at $2,532 found 18 hours ago
Korean Air
Wed, Nov 5 - Sun, Nov 16
GUM
Guam
LIS
Lisbon
$2,532 Roundtrip, found 5 days ago
$2,532
Roundtrip
found 5 days ago
Select Korean Air flight, departing Wed, Nov 5 from Guam to Lisbon, returning Sun, Nov 16, priced at $2,532 found 5 days ago
Korean Air
Sun, Dec 28 - Wed, Jan 7
GUM
Guam
LIS
Lisbon
$2,582 Roundtrip, found 17 hours ago
$2,582
Roundtrip
found 17 hours ago
Select Korean Air flight, departing Sun, Dec 28 from Guam to Lisbon, returning Wed, Jan 7, priced at $2,582 found 17 hours ago
Korean Air
Wed, Dec 24 - Wed, Jan 7
GUM
Guam
LIS
Lisbon
$2,632 Roundtrip, found 18 hours ago
$2,632
Roundtrip
found 18 hours ago
Select Korean Air flight, departing Wed, Dec 24 from Guam to Lisbon, returning Wed, Jan 7, priced at $2,632 found 18 hours ago
Korean Air
Thu, Dec 25 - Wed, Jan 7
GUM
Guam
LIS
Lisbon
$2,682 Roundtrip, found 17 hours ago
$2,682
Roundtrip
found 17 hours ago
Select Korean Air flight, departing Thu, Dec 25 from Guam to Lisbon, returning Wed, Jan 7, priced at $2,682 found 17 hours ago

Frequently asked questions

How much does a flight from A.B. Won Pat Intl. Airport (GUM) to Humberto Delgado Airport (LIS) cost?
Secure a cheap one-way flight from $767 or cheap return flight from $2,076 from A.B. Won Pat Intl. Airport (GUM) to Humberto Delgado Airport (LIS) 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 A.B. Won Pat Intl. Airport (GUM) to Humberto Delgado Airport (LIS)?
Planning your getaway for December can help you save, as it's the cheapest month for flights between GUM and LIS. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from A.B. Won Pat Intl. Airport (GUM) to Humberto Delgado Airport (LIS)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest GUM to LIS flight.
How many flights per day from A.B. Won Pat Intl. Airport (GUM) to Humberto Delgado Airport (LIS)?
You'll have to book a flight with a layover when traveling from A.B. Won Pat Intl. Airport (GUM) to Humberto Delgado Airport (LIS). 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 LIS?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on a range of 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 Humberto Delgado Airport (LIS)?
To avoid potential delays on the A.B. Won Pat Intl. Airport (GUM) to Humberto Delgado Airport (LIS) 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.
Is it cheaper to buy a plane ticket from A.B. Won Pat Intl. Airport (GUM) to Humberto Delgado Airport (LIS) last-minute?
Holding off until just before your departure to book your flight from GUM to LIS often results in higher prices. While you may find some last-minute offers, they aren't always guaranteed. Be flexible with your travel plans to maximize your chances of getting a bargain.
Is it cheaper to book a GUM to LIS flight and hotel package?
Compared with arranging hotels and flights separately, booking a GUM to LIS flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place takes the hassle out of planning your trip. Just pick your flights and choose from our extensive 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 A.B. Won Pat Intl. Airport (GUM) to Humberto Delgado Airport (LIS)?
If you reserved your GUM to LIS flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. 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
A.B. Won Pat Intl.
Destination airport
Humberto Delgado
Roundtrip price
$2,076
Distance
8452 mi

Book with confidence

Guam to Lisbon Flights

The cheapest times to fly from Guam to Lisbon

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

 

The best time to book a flight from Guam to Lisbon

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

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 Lisbon in 2025. You can also book with separate airlines for your outbound and return journeys, from $767 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 Lisbon 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 Lisbon 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 Lisbon Flights

Explore a world of travel with Expedia

*Available to One Key members.