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Cheap flights from London Heathrow Airport to Guam from £369

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Guam departing on 18/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from London Heathrow Airport to Guam

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
13:25 - 03:35
LHR
-
GUM
29h 10m
1 stop
Multiple Airlines Logo
04:40 - 18:50
GUM
-
LHR
23h 10m
1 stop
£744Multiple Airlines
Sat, 9 May - Sat, 23 May
Multiple Airlines Logo
16:35 - 03:35
LHR
-
GUM
26h 00m
1 stop
Multiple Airlines Logo
00:50 - 14:20
GUM
-
LHR
22h 30m
1 stop
£782Multiple Airlines
Sat, 18 Apr - Sat, 25 Apr
Multiple Airlines Logo
13:00 - 01:00
LHR
-
GUM
50h 00m
2 stops
Multiple Airlines Logo
02:00 - 18:10
GUM
-
LHR
50h 10m
2 stops
£793Multiple Airlines
Fri, 20 Mar - Mon, 23 Mar
Multiple Airlines Logo
16:35 - 03:35
LHR
-
GUM
26h 00m
1 stop
Multiple Airlines Logo
00:50 - 14:20
GUM
-
LHR
22h 30m
1 stop
£796Multiple Airlines
Sun, 10 May - Thu, 21 May
Multiple Airlines Logo
16:35 - 23:45
LHR
-
GUM
22h 10m
1 stop
Multiple Airlines Logo
00:50 - 14:20
GUM
-
LHR
22h 30m
1 stop
£807Multiple Airlines
Sun, 10 May - Wed, 20 May
Multiple Airlines Logo
16:35 - 03:35
LHR
-
GUM
26h 00m
1 stop
Multiple Airlines Logo
00:50 - 14:20
GUM
-
LHR
22h 30m
1 stop
£811Multiple Airlines
Mon, 11 May - Wed, 20 May
Multiple Airlines Logo
16:35 - 23:45
LHR
-
GUM
22h 10m
1 stop
Multiple Airlines Logo
00:50 - 14:20
GUM
-
LHR
22h 30m
1 stop
£818Multiple Airlines
Thu, 7 May - Wed, 20 May
Multiple Airlines Logo
16:35 - 03:35
LHR
-
GUM
26h 00m
1 stop
Multiple Airlines Logo
00:50 - 14:20
GUM
-
LHR
22h 30m
1 stop
£819Multiple Airlines
Wed, 6 May - Tue, 19 May
Multiple Airlines Logo
16:35 - 03:35
LHR
-
GUM
26h 00m
1 stop
Multiple Airlines Logo
00:50 - 14:20
GUM
-
LHR
22h 30m
1 stop
£825Multiple Airlines
Mon, 11 May - Thu, 21 May
Multiple Airlines Logo
16:35 - 03:35
LHR
-
GUM
26h 00m
1 stop
Multiple Airlines Logo
00:50 - 14:20
GUM
-
LHR
22h 30m
1 stop
£830Multiple Airlines
Fri, 8 May - Thu, 21 May

Korean Air flights from London Heathrow Airport to Guam

Our best Korean Air deals on London Heathrow Airport to Guam flight tickets
Korean Air
2 Mar
LHR18:50London Heathrow
18h 15m
1 stop
GUM23:05Tamuning Guam Intl
19 Mar
GUM01:00Tamuning Guam Intl
25h 30m
1 stop
LHR16:30London Heathrow
£1,089
Korean Air
2 Mar
LHR18:50London Heathrow
18h 15m
1 stop
GUM23:05Tamuning Guam Intl
20 Mar
GUM16:50Tamuning Guam Intl
33h 40m
1 stop
LHR16:30London Heathrow
£1,091
Korean Air
2 Mar
LHR18:50London Heathrow
18h 15m
1 stop
GUM23:05Tamuning Guam Intl
19 Mar
GUM01:00Tamuning Guam Intl
25h 30m
1 stop
LHR16:30London Heathrow
£1,091

Japan Airlines flights from London Heathrow Airport to Guam

Our best Japan Airlines deals on London Heathrow Airport to Guam flight tickets
Japan Airlines
13 Mar
LHR09:15London Heathrow
67h 20m
2 stops
GUM14:35Tamuning Guam Intl
17 Mar
GUM16:35Tamuning Guam Intl
53h 45m
2 stops
LHR12:20London Heathrow
£2,776
Japan Airlines
13 Mar
LHR17:25London Heathrow
59h 10m
2 stops
GUM14:35Tamuning Guam Intl
17 Mar
GUM16:35Tamuning Guam Intl
49h 45m
2 stops
LHR08:20London Heathrow
£2,777
Japan Airlines
13 Mar
LHR17:25London Heathrow
59h 10m
2 stops
GUM14:35Tamuning Guam Intl
17 Mar
GUM16:35Tamuning Guam Intl
49h 45m
2 stops
LHR08:20London Heathrow
£2,779

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Guam that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 25 February 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Guam that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sat 9/5

13:25-03:35

1 stop29h 10m

Tamuning Guam Intl

Sat 23/5

04:40-18:50

1 stop23h 10m

£744

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sat 18/4

16:35-03:35

1 stop26h 00m

Tamuning Guam Intl

Sat 25/4

00:50-14:20

1 stop22h 30m

£782

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Fri 20/3

13:00-01:00

2 stops50h 00m

Tamuning Guam Intl

Mon 23/3

02:00-18:10

2 stops50h 10m

£793

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sun 10/5

16:35-03:35

1 stop26h 00m

Tamuning Guam Intl

Thu 21/5

00:50-14:20

1 stop22h 30m

£796

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sun 10/5

16:35-23:45

1 stop22h 10m

Tamuning Guam Intl

Wed 20/5

00:50-14:20

1 stop22h 30m

£807

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 11/5

16:35-03:35

1 stop26h 00m

Tamuning Guam Intl

Wed 20/5

00:50-14:20

1 stop22h 30m

£811

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Thu 7/5

16:35-23:45

1 stop22h 10m

Tamuning Guam Intl

Wed 20/5

00:50-14:20

1 stop22h 30m

£818

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Wed 6/5

16:35-03:35

1 stop26h 00m

Tamuning Guam Intl

Tue 19/5

00:50-14:20

1 stop22h 30m

£819

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 11/5

16:35-03:35

1 stop26h 00m

Tamuning Guam Intl

Thu 21/5

00:50-14:20

1 stop22h 30m

£825

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Fri 8/5

16:35-03:35

1 stop26h 00m

Tamuning Guam Intl

Thu 21/5

00:50-14:20

1 stop22h 30m

£830

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Guam from

How to get the cheapest flight ticket from London Heathrow Airport to Guam

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from London Heathrow to Guam?

Korean Air is the most popular carrier operating from London Heathrow to Guam

Cheap London Heathrow Airport to Guam flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Guam

Fastest flight time

18h 15m

Direct flights

None
The fastest flight from London Heathrow Airport to Guam takes 18h 15m
There are no direct flights from London Heathrow Airport to Guam. There are no popular flight routes from London Heathrow Airport to Guam.
Search flight deals

  • When did momondo last update prices for flights from London Heathrow Airport to Guam?

    Prices for flights from London Heathrow Airport to Guam were last updated today.

  • How old do you have to be to fly from London Heathrow Airport to Guam?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Guam.

  • What documentation or ID do you need to fly to Guam?

    The required travel and health documents for your Guam trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Guam. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from London to Guam?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Guam. momondo saves you time and could save you money on your trip.

Can I find flights from London to Guam with flexible booking policies on momondo?

momondo does allow users to show only those flights to Guam from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Guam?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Guam.

I’m not ready to book a flight from London to Guam right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Guam flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Popular Cities in Guam

Popular flights according to clicks in the last 7 days on momondo
Flights to Tamuningfrom £950