$648 Cheap Flights from Guam (GUM) to London (LON)

View $648 flight on Fri, Nov 14, 2025Opens in a new window

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

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Cheap Flights from Guam to London (GUM-LON)

Prices were available within the past 7 days and start at $648 for one-way flights and $1,266 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Tue, Nov 4 - Tue, Nov 18
GUM
Guam
STN
London
$1,266 Roundtrip, found 4 days ago
$1,266
Roundtrip
found 4 days ago
Select Philippine Airlines flight, departing Tue, Nov 4 from Guam to London, returning Tue, Nov 18, priced at $1,266 found 4 days ago
Philippine Airlines
Tue, Nov 4 - Tue, Nov 18
GUM
Guam
LGW
London
$1,273 Roundtrip, found 4 days ago
$1,273
Roundtrip
found 4 days ago
Select Philippine Airlines flight, departing Tue, Nov 4 from Guam to London, returning Tue, Nov 18, priced at $1,273 found 4 days ago
Philippine Airlines
Tue, Nov 4 - Tue, Nov 18
GUM
Guam
STN
London
$1,306 Roundtrip, found 4 days ago
$1,306
Roundtrip
found 4 days ago
Select Philippine Airlines flight, departing Tue, Nov 4 from Guam to London, returning Tue, Nov 18, priced at $1,306 found 4 days ago
Philippine Airlines
Tue, Nov 4 - Tue, Nov 18
GUM
Guam
LHR
London
$1,309 Roundtrip, found 4 days ago
$1,309
Roundtrip
found 4 days ago
Select Philippine Airlines flight, departing Tue, Nov 4 from Guam to London, returning Tue, Nov 18, priced at $1,309 found 4 days ago
Philippine Airlines
Tue, Nov 4 - Tue, Nov 18
GUM
Guam
LHR
London
$1,312 Roundtrip, found 4 days ago
$1,312
Roundtrip
found 4 days ago
Select Philippine Airlines flight, departing Tue, Nov 4 from Guam to London, returning Tue, Nov 18, priced at $1,312 found 4 days ago
Philippine Airlines
Wed, Sep 10 - Wed, Sep 17
GUM
Guam
LHR
London
$1,312 Roundtrip, found 3 days ago
$1,312
Roundtrip
found 3 days ago
Select Philippine Airlines flight, departing Wed, Sep 10 from Guam to London, returning Wed, Sep 17, priced at $1,312 found 3 days ago
Philippine Airlines
Mon, Apr 20 - Mon, Apr 27
GUM
Guam
LHR
London
$1,324 Roundtrip, found 6 days ago
$1,324
Roundtrip
found 6 days ago
Select Philippine Airlines flight, departing Mon, Apr 20 from Guam to London, returning Mon, Apr 27, priced at $1,324 found 6 days ago
Korean Air
Wed, Sep 10 - Wed, Sep 17
GUM
Guam
LHR
London
$1,714 Roundtrip, found 3 days ago
$1,714
Roundtrip
found 3 days ago
Select Korean Air flight, departing Wed, Sep 10 from Guam to London, returning Wed, Sep 17, priced at $1,714 found 3 days ago
Malaysia Airlines
Thu, Oct 9 - Mon, Oct 27
GUM
Guam
LHR
London
$6,743 Roundtrip, found 1 day ago
$6,743
Roundtrip
found 1 day ago
Select Malaysia Airlines flight, departing Thu, Oct 9 from Guam to London, returning Mon, Oct 27, priced at $6,743 found 1 day ago
Jeju Air
Wed, Jul 16 - Fri, Jul 18
GUM
Guam
LCY
London
$7,777 Roundtrip, found 2 days ago
$7,777
Roundtrip
found 2 days ago
Select Jeju Air flight, departing Wed, Jul 16 from Guam to London, returning Fri, Jul 18, priced at $7,777 found 2 days ago
Flights from Guam (GUM) to London (STN)
Origin airport
A.B. Won Pat Intl.
Destination airport
Stansted
Roundtrip price
$1,266
Distance
7446 mi

Guam to London Flights

The cheapest times to fly from Guam to London

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

 

The best time to book a flight from Guam to London

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

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 London in 2025. You can also book with separate airlines for your outbound and return journeys, from $648 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 London 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 London 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 is a flight from GUM to London (LON-All Airports)?
Based on fares available within the last 7 days on Expedia for flights departing within the next year, round-trip journeys between A.B. Won Pat Intl. Airport (GUM) and London (LON-All Airports) start from $1,266. Book ASAP to score the best price for your adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Guam International Airport to London (LON-All Airports)?
We understand that circumstances change unexpectedly, so we've made it as easy as possible for you to cancel your trip online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Guam International Airport to London (LON-All Airports) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Guam Intl. Airport to London (LON-All Airports) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from A.B. Won Pat Intl. Airport (GUM) to London (LON-All Airports)?
The distance is around 7458 mi, so fill your carry-on bag with all you need to make your journey comfortable. Wondering what to take on board your Barrigada to England flight? Earplugs, a sleep mask and a travel pillow are among the essentials.
Which airlines fly direct from Guam Intl. Airport to London (LON-All Airports)?
At present, no airlines offer direct flights from GUM to London (LON-All Airports). You'll need to book a flight with one or more stops. To get the best price and connections, lock in your fare well ahead of time.
Are GUM to London (LON-All Airports) flight tickets cheaper when they're purchased at the last minute?
Late planners can sometimes pick up a bargain, with some super cheap airfares from Guam International Airport to London (LON-All Airports) popping up a few weeks before the date of departure. If you'd rather plan ahead of time, Expedia compares and updates all the best flight deals continuously --- as early as a year in advance in some cases. It does depend on the carrier though, as not every airline releases prices that far in advance.

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*Available to One Key members.