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 month to fly from London to Guam?

Flights from London to Guam lean towards being more expensive in October. Prices are generally better when you fly from London to Guam in June, with the cheapest ticket starting at £849.

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.

£1,306+ Flights from London to Guam

Cheap flight deals from London to Guam

Round-trip from	£998
Popular in	October
Cheapest in	June
Average price	£858

Japan Airlines
10/8-17/8
4 total stops
105h 25m total
London to Guam

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (£19 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£11 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Find flight deals from London to Guam

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 26 June 2025.

Sun 10/820:00LHR - GUM

2 stops57h 40mJapan Airlines

Sun 17/816:40GUM - LHR

2 stops47h 45mJapan Airlines

Deal found 26/6£998

Thu 26/610:10LGW - GUM

2 stops29h 00mMultiple Airlines

Mon 30/615:55GUM - LGW

2 stops35h 35mMultiple Airlines

Deal found 24/6£1,024

Thu 26/606:30LHR - GUM

2 stops23h 15mMultiple Airlines

Mon 30/615:55GUM - LHR

2 stops39h 05mMultiple Airlines

Deal found 24/6£1,099

Fri 8/819:35LHR - GUM

1 stop19h 35mKorean Air

Fri 15/817:00GUM - LHR

1 stop33h 20mKorean Air

Deal found 24/6£1,778

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 26 June 2025.

Sun 10/820:00LHR - GUM

2 stops57h 40mJapan Airlines

Sun 17/816:40GUM - LHR

2 stops47h 45mJapan Airlines

Deal found 26/6£998

Fri 8/812:35LGW - GUM

2 stops28h 55mMultiple Airlines

Thu 14/803:40GUM - LGW

2 stops23h 55mMultiple Airlines

Deal found 24/6£1,108

Fri 8/819:35LHR - GUM

1 stop19h 35mKorean Air

Fri 15/817:00GUM - LHR

1 stop33h 20mKorean Air

Deal found 24/6£1,778

Sat 9/820:25LHR - GUM

2 stops45h 05mMultiple Airlines

Fri 15/803:40GUM - LHR

2 stops25h 50mMultiple Airlines

Deal found 25/6£1,129

Last-minute flights from London to Guam
Discover last-minute flight deals from London to Guam. Data last updated 26 June 2025 and is based on user searches.

Thu 26/610:10LGW - GUM

2 stops29h 00mMultiple Airlines

Mon 30/615:55GUM - LGW

2 stops35h 35mMultiple Airlines

Deal found 24/6£1,024

Thu 26/619:20LHR - GUM

1 stop34h 20mJapan Airlines

Mon 30/616:40GUM - LHR

2 stops47h 40mJapan Airlines

Deal found 24/6£1,064

Thu 26/606:30LHR - GUM

2 stops23h 15mMultiple Airlines

Mon 30/615:55GUM - LHR

2 stops39h 05mMultiple Airlines

Deal found 24/6£1,099

Thu 17/719:35LHR - GUM

1 stop19h 35mKorean Air

Tue 22/717:00GUM - LHR

1 stop33h 20mKorean Air

Deal found 24/6£2,781

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sun 10/8

20:00-14:40

2 stops57h 40m

Tamuning Guam Intl

Sun 17/8

16:40-07:25

2 stops47h 45m

£998

LondonTamuning

LGW - GUM

LGWGUM

London Gatwick

Fri 8/8

12:35-02:30

2 stops28h 55m

Tamuning Guam Intl

Thu 14/8

03:40-18:35

2 stops23h 55m

£1,108

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sat 9/8

20:25-02:30

2 stops45h 05m

Tamuning Guam Intl

Fri 15/8

03:40-20:30

2 stops25h 50m

£1,129

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Fri 8/8

19:35-00:10

1 stop19h 35m

Tamuning Guam Intl

Fri 15/8

17:00-17:20

1 stop33h 20m

£1,778

Flights are sorted by cheapest return flights first.

Deals found on 26/6

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.

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

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.

Reviews of airlines servicing Guam

Get a feel of what it's like to fly with Korean Air and Japan Airlines from London to Guam by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very Good

1,096 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Korean Air

8.4

Very Good

1,096 reviews

Korean Air

8.4

Very Good

1,096 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Japan Airlines

8.3

Very Good

1,504 reviews

Korean Air

8.4

Very Good

1,096 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

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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Top 2 airlines flying from London to Guam

Airline	Cheapest	Average	Flexibility	On-time
Japan Airlines	Cheapest£808	Average£896	FlexibilityNo cancel fee	On-time79%	Search Japan Airlines flights
Korean Air	Cheapest£1,013	Average£1,093	FlexibilityNo cancel fee	On-time81%	Search Korean Air flights

Fly with Cheapflights

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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London to Guam from £998

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Guam

Keep the following information in mind while searching for London to Guam flight deals. Data was last updated 26 June 2025.

Round-trip from

Popular in

Cheapest in

Average price

Find 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 26 June 2025.

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 26 June 2025.

Cheapflights Fare Finder

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

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

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

Find hourly flight availability from London to Guam. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 June 2025.

Reviews of airlines servicing Guam

Get insights into the airlines that provide service to Guam. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Guam. Reviews last updated 26 June 2025.

Get a feel of what it's like to fly with Korean Air and Japan Airlines from London to Guam by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to Guam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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.

Top 2 airlines flying from London to Guam

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

100% Free

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 26 June 2025.