In terms of precipitation, rainfall in Guam ranges from 65.0 - 365.0 inches per month. August is typically the wettest month, when rainfall can reach 365.0 mm. March is typically the driest time to visit Guam when rainfall is around 65.0 mm.

If weather is an important factor for your trip to Guam, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

What is the cheapest time of day to fly from LON to GU?

When flying from London to Guam, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from London to Guam that include hotel bookings?

Yes. In addition to deals on London to Guam flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to Guam?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Guam.

Can I find deals for business class flights from London to Guam?

Yes. Cheapflights offers flight deals from London to Guam by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£821+ Cheap Flights from London to Guam

Cheap flight deals from London to Guam

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

Cheapest flights from London to Guam
Explore the most affordable flight options available from London to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Wed 23/911:00 -

2 stops31h 35m

Mon 28/904:40 -

2 stops34h 50m

Deal found 26/8£821

Tue 22/912:35 -

2 stops26h 10m

Tue 29/904:40 -

2 stops34h 55m

Deal found 27/8£836

Wed 2/913:00 -

2 stops28h 30m

Wed 9/904:40 -

2 stops34h 55m

Deal found 30/8£839

Wed 2/909:55 -

2 stops28h 50m

Tue 8/902:20 -

2 stops26h 00m

Deal found 30/8£855

Wed 23/908:55 -

2 stops33h 40m

Mon 28/904:40 -

2 stops25h 45m

Deal found 26/8£876

Mon 12/1016:35 -

1 stop23h 25m

Sun 18/1000:50 -

2 stops26h 15m

Deal found 28/8£897

Mon 12/1011:35 -

2 stops31h 00m

Mon 19/1004:40 -

2 stops35h 00m

Deal found 28/8£917

Tue 22/909:55 -

3 stops28h 50m

Mon 28/900:50 -

2 stops26h 15m

Deal found 27/8£967

Tue 15/916:35 -

1 stop26h 00m

Tue 22/904:40 -

2 stops35h 50m

Deal found 29/8£1,019

Sat 12/916:35 -

1 stop23h 25m

Sat 19/904:40 -

2 stops35h 50m

Deal found 29/8£1,046

Wed 16/1213:40 -

2 stops28h 50m

Tue 5/116:50 -

3 stops31h 05m

Deal found 26/8£1,300

Find flight deals from London to Guam

Round-trip from	£821

23/9-28/9
4 total stops
66h 25m total
London to Guam

Search Deals

Fly from

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Route

Depart

Return

Price

Cheapest return flight

LondonTamuning

LGW London Gatwick - GUM Tamuning Guam Intl

LGWGUM

London Gatwick

Wed 23/9

11:00-03:35

2 stops31h 35m

Tamuning Guam Intl

Mon 28/9

04:40-06:30

2 stops34h 50m

£821

LondonTamuning

LGW London Gatwick - GUM Tamuning Guam Intl

LGWGUM

London Gatwick

Tue 22/9

12:35-23:45

2 stops26h 10m

Tamuning Guam Intl

Tue 29/9

04:40-06:35

2 stops34h 55m

£836

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Wed 23/9

08:55-03:35

2 stops33h 40m

Tamuning Guam Intl

Mon 28/9

04:40-21:25

2 stops25h 45m

£876

LondonTamuning

LGW London Gatwick - GUM Tamuning Guam Intl

LGWGUM

London Gatwick

Mon 12/10

11:35-03:35

2 stops31h 00m

Tamuning Guam Intl

Mon 19/10

04:40-06:40

2 stops35h 00m

£917

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Tue 15/9

13:25-01:15

1 stop26h 50m

Tamuning Guam Intl

Tue 22/9

04:40-18:50

1 stop23h 10m

£937

Fastest return journey

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Mon 12/10

19:35-03:35

1 stop23h 00m

Tamuning Guam Intl

Mon 19/10

04:40-17:20

1 stop21h 40m

£963

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Tue 22/9

15:05-04:20

2 stops28h 15m

Tamuning Guam Intl

Mon 28/9

00:50-18:05

2 stops26h 15m

£1,096

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Sat 12/9

08:55-01:15

3 stops31h 20m

Tamuning Guam Intl

Sat 19/9

17:20-19:10

3 stops34h 50m

£1,170

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Wed 16/12

08:30-01:00

2 stops30h 30m

Tamuning Guam Intl

Mon 4/1

02:00-08:05

3 stops40h 05m

£1,198

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Sat 12/9

15:05-04:20

2 stops28h 15m

Tamuning Guam Intl

Sat 19/9

06:00-06:25

2 stops33h 25m

£1,230

Flights are sorted by cheapest return flights first.

Deals found on 26/8

Showing 1-10 of 13 resultsSorted by cheapest first

Best time to book a flight from London to Guam

Have a flexible travel schedule? Discover the best time to fly to Guam from London with our price prediction graph.

LGW-GUM

LHR-GUM

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Guam

LON-GU0

LGW-GUM

LHR-GUM

No data available for this route at this time. Please check back soon.

Related info for your journey

Can I find deals for flights from London to Guam that include hotel bookings?
Yes. In addition to deals on London to Guam flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Guam?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Guam.
Can I find deals for business class flights from London to Guam?
Yes. Cheapflights offers flight deals from London to Guam by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Browse thousands of different options on Cheapflights for your next trip

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How does Cheapflights help users find flights from London to Guam?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Guam. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from London to Guam?

Cheapflights helps you find that perfect flight to Guam from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Guam with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from London to Guam, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from London to Guam become cheaper?

Not ready to book yet? You can track prices for flights from London to Guam on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from London to Guam from £821

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Guam

Cheapest flights from London to GuamExplore the most affordable flight options available from London to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Explore the most affordable flight options available from London to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Best flights from London to GuamDiscover carefully curated flight deals from London to Guam that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Discover carefully curated flight deals from London to Guam that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Last-minute flights from London to GuamDiscover last-minute flight deals from London to Guam. Data last updated 31 August 2026 and is based on user searches.

Discover last-minute flight deals from London to Guam. Data last updated 31 August 2026 and is based on user searches.

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Use the filters below to find and compare flights from London to Guam that are best for you.

Best time to book a flight from London to Guam

Have a flexible travel schedule? Discover the best time to fly to Guam from London with our price prediction graph.

Cheapflights Insights

Related info for your journey

Can I find deals for flights from London to Guam that include hotel bookings?

How can I find direct flights from London to Guam?

Can I find deals for business class flights from London to Guam?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Guam

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Guam by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from London to Guam by cabin class

Find flights from London to Guam, based on your preferred cabin class, be it economy, premium economy, business, or first class.

London and Guam flights

Browse other London and Guam flight options. Last updated on 31 August 2026.

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Check out other popular destinations found by fellow travellers in 2026

London to Guam flights

Consider these flights travelling from London to Guam.

Fly with Cheapflights

How does Cheapflights help users find flights from London to Guam?

Why should you use Cheapflights to find cheap flight tickets from London to Guam?

Can Cheapflights find flights from London to Guam with no change fees?

Can Cheapflights notify me if prices for flights from London to Guam become cheaper?

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Book with Flexibility

Travel Smart

Cheapest flights from London to Guam
Explore the most affordable flight options available from London to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Best flights from London to Guam
Discover carefully curated flight deals from London to Guam that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Last-minute flights from London to Guam
Discover last-minute flight deals from London to Guam. Data last updated 31 August 2026 and is based on user searches.