How long is the flight from London Heathrow Airport to Guam?

Departing from London Heathrow Airport to Guam will take you 27h 45m. The distance between London Heathrow Airport and Guam is about 7483 mi.

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 LHR to GU?

When flying from London Heathrow Airport 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 Heathrow to Guam that include hotel bookings?

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

How can I find direct flights from Heathrow to Guam?

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

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

Yes. Cheapflights offers flight deals from Heathrow 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.

£480+ Cheap Flights from London Heathrow Airport to Guam

Cheap flight deals from Heathrow to Guam

Enter your travel dates to find the best prices.

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Cheapest flights from Heathrow to Guam
Explore the most affordable flight options available from Heathrow to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 September 2026.

Mon 30/1108:50 -

2 stops30h 10m

Mon 7/1216:50 -

2 stops29h 15m

Deal found 6/9£838

Sun 25/1011:00 -

2 stops28h 00m

Sat 31/1002:00 -

2 stops39h 15m

Deal found 10/9£1,004

Sun 25/1017:40 -

1 stop21h 20m

Thu 29/1002:20 -

2 stops25h 35m

Deal found 6/9£1,043

Sun 25/1014:15 -

2 stops27h 45m

Fri 30/1005:25 -

2 stops35h 00m

Deal found 6/9£1,118

Find flight deals from Heathrow to Guam

Round-trip from	£627
One-way from	£480

9/11-15/11
4 total stops
74h 05m total
London to Guam

Search Deals

12/10-31/12
3 total stops
43h 00m total
London to Guam

Search Deals

Cheapflights Fare Finder

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

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LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Tue 13/10

20:25-03:35

2 stops22h 10m

Tamuning Guam Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£627

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Thu 15/10

20:25-03:35

2 stops22h 10m

Tamuning Guam Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£660

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Sun 11/10

20:25-03:35

2 stops22h 10m

Tamuning Guam Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£663

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Sat 10/10

15:05-04:20

2 stops28h 15m

Tamuning Guam Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£854

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Sun 25/10

11:00-01:00

2 stops28h 00m

Tamuning Guam Intl

Sat 31/10

02:00-07:15

2 stops39h 15m

£1,004

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Sun 25/10

17:40-01:00

1 stop21h 20m

Tamuning Guam Intl

Thu 29/10

02:20-17:55

2 stops25h 35m

£1,043

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Mon 30/11

18:50-01:00

1 stop20h 10m

Tamuning Guam Intl

Sun 6/12

02:40-16:30

1 stop23h 50m

£1,097

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Sun 25/10

14:15-04:00

2 stops27h 45m

Tamuning Guam Intl

Fri 30/10

05:25-06:25

2 stops35h 00m

£1,118

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Sat 10/10

13:25-23:55

1 stop25h 30m

Tamuning Guam Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£1,514

LondonTamuning

LHR London Heathrow - GUM Tamuning Guam Intl

LHRGUM

London Heathrow

Sat 26/12

14:15-04:00

2 stops27h 45m

Tamuning Guam Intl

Sat 2/1

05:25-06:25

2 stops35h 00m

£1,567

Flights are sorted by cheapest return flights first.

Deals found on 8/9

Showing 1-10 of 11 resultsSorted by cheapest first

Best time to book a flight from Heathrow to Guam

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

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 Heathrow Airport to Guam

LHR-GU0

LHR-GUM

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

Related info for your journey

How long is the flight from London Heathrow Airport to Guam?
Departing from London Heathrow Airport to Guam will take you 27h 45m. The distance between London Heathrow Airport and Guam is about 7483 mi.
Can I find deals for flights from Heathrow to Guam that include hotel bookings?
Yes. In addition to deals on Heathrow to Guam flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Guam?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Guam.
Can I find deals for business class flights from Heathrow to Guam?
Yes. Cheapflights offers flight deals from Heathrow 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.

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Cheap flights from London Heathrow Airport to Guam from £480

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Guam

Cheapest flights from Heathrow to GuamExplore the most affordable flight options available from Heathrow to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 September 2026.

Explore the most affordable flight options available from Heathrow to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 September 2026.

Best flights from Heathrow to GuamDiscover carefully curated flight deals from Heathrow to Guam that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 September 2026.

Discover carefully curated flight deals from Heathrow to Guam that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 September 2026.

Last-minute flights from Heathrow to GuamDiscover last-minute flight deals from Heathrow to Guam. Data last updated 10 September 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Guam. Data last updated 10 September 2026 and is based on user searches.

One-way flights from Heathrow to GuamSearch for one-way flight options from Heathrow to Guam. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

Search for one-way flight options from Heathrow to Guam. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

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

Best time to book a flight from Heathrow to Guam

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Related info for your journey

How long is the flight from London Heathrow Airport to Guam?

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

How can I find direct flights from Heathrow to Guam?

Can I find deals for business class flights from Heathrow 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 Heathrow to Guam

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Complete your trip

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

Heathrow and Guam flights

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Cheapest flights from Heathrow to Guam
Explore the most affordable flight options available from Heathrow to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 September 2026.

Best flights from Heathrow to Guam
Discover carefully curated flight deals from Heathrow to Guam that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 September 2026.

Last-minute flights from Heathrow to Guam
Discover last-minute flight deals from Heathrow to Guam. Data last updated 10 September 2026 and is based on user searches.

One-way flights from Heathrow to Guam
Search for one-way flight options from Heathrow to Guam. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.