The cheapest times to fly from STN to GUM are

  • March 26th to August 5th
  • August 27th to October 28th (except the weeks of September 17th and October 1st)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from STN to GUM is early to mid July. Prices can be as high as $11973 for Sunday flights during mid December, or as low as $4648 for Tuesday flights around early to mid July.


When to Fly to Guam

Flying from London (STN) to Guam, GU (GUM) will usually cost between $5460 to $10700 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid July with an average ticket price of $5461. Due to high demand the most expensive time to fly is mid December, with an average price of $9995. Planning your trip to low-cost times can easily save you $4534 on economy flights and even more on first-class flights. Generally, any price below $8089 can be considered a good price for a round-trip STN to GUM flight.

See below for a graph of average weekly prices for the STN to GUM route. All prices are for round-trip tickets in USD.

STN to GUM Flight Prices

Compared to other flights, the STN to GUM flight is more expensive than the average and costs more than the average flight leaving from London. The average price per mile (for a direct flight) is $0.68, which is above average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to GUM, and Friday the cheapest day to fly back into STN. Sundays are the most expensive days to fly to Guam, and Tuesdays are the most expensive days to return to London. Selecting flights on the least expensive days could save you up to $2588 (28%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $6771. Return trip prices are from the GUM to STN flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from STN to GUM can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 14 hour 23 minutes may be realistic.


Flight Hacking STN to GUM

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from STN to GUM — but Champion Traveler does!

Hack #1: Seoul (STN > ICN > GUM)

  • Price for both tickets: $1399
  • Average savings: $6690 (82.7%)

See STN to HKG flights

Hack #2: Hong Kong (STN > HKG > GUM)

  • Price for both tickets: $1404
  • Average savings: $6685 (82.64%)

See STN to ICN flights

Hack #3: Tokyo (STN > NRT > GUM)

  • Price for both tickets: $1427
  • Average savings: $6662 (82.36%)

See STN to NRT flights


Flight Questions Answered

Still have questions about flying from STN to GUM? We’ve got answers.

Which airlines fly this route?

You can find 15 major airlines flying this route most often: Air Moldova, ANA, Austrian, Brussels Airlines, Cathay Pacific, Emirates, Eurowings, Finnair, JAL, KLM, Lufthansa, SAS, SWISS, Turkish Airlines, United, and potentially more during busy seasons.

How far away is it from Guam International Airport to London Stansted Airport?

The distance between the two airports is roughly 7446 miles or 11983 kilometers.

How long does it take to fly from STN to GUM?

The real-world flight time for a nonstop STN to GUM flight is about 14 hour 23 minutes.

How many flights go between London and Guam, GU?

It depends on the day of the week and the date, but a typical day might have around 5 available flights from STN to GUM.


Airport Location Info


Departing Airport

Origination code STN
Origination airport name London Stansted Airport
City London
Country the United Kingdom
Latitude 51.9
Longitude 0.2

Return Airport

Destination code GUM
Destination airport name Guam International Airport
City Guam, GU
Country the United States
Latitude 13.5
Longitude 144.8


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.