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Cheap flights from London Heathrow Airport to Guam from £377

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 27/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from London Heathrow Airport to Guam

Cheap return flights

Logo
10:35 - 14:35LHR-GUM
42h 00m2 stops
Logo
16:50 - 22:00GUM-LHR
39h 10m2 stops
£2,850
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Mon, 27 Oct - Mon, 10 Nov
Logo
09:30 - 01:30LHR-GUM
30h 00m2 stops
Logo
02:30 - 18:05GUM-LHR
25h 35m1 stop
£2,904
Find Deal
Mon, 27 Oct - Tue, 11 Nov
Logo
09:30 - 01:30LHR-GUM
30h 00m2 stops
Logo
02:30 - 18:05GUM-LHR
25h 35m1 stop
£2,928
Find Deal
Mon, 27 Oct - Sun, 9 Nov
Logo
09:30 - 01:30LHR-GUM
30h 00m2 stops
Logo
02:30 - 18:05GUM-LHR
25h 35m1 stop
£2,935
Find Deal
Mon, 27 Oct - Mon, 10 Nov
Logo
06:30 - 01:30LHR-GUM
33h 00m2 stops
Logo
02:30 - 18:05GUM-LHR
25h 35m1 stop
£2,974
Find Deal
Sun, 26 Oct - Tue, 11 Nov
Logo
20:35 - 01:30LHR-GUM
43h 55m2 stops
Logo
02:30 - 18:05GUM-LHR
25h 35m1 stop
£2,976
Find Deal
Sat, 25 Oct - Tue, 11 Nov
Logo
06:30 - 01:30LHR-GUM
33h 00m2 stops
Logo
02:30 - 18:05GUM-LHR
25h 35m1 stop
£2,997
Find Deal
Sun, 26 Oct - Sun, 9 Nov
Logo
06:30 - 01:30LHR-GUM
33h 00m2 stops
Logo
02:30 - 18:05GUM-LHR
25h 35m1 stop
£3,006
Find Deal
Sun, 26 Oct - Mon, 10 Nov
Korean Air Logo
18:50 - 14:35LHR-GUM
33h 45m1 stop
Korean Air Logo
16:50 - 16:30GUM-LHR
33h 40m1 stop
£4,154Korean Air
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Mon, 27 Oct - Mon, 10 Nov
Korean Air Logo
18:50 - 14:35LHR-GUM
33h 45m1 stop
Korean Air Logo
16:50 - 16:30GUM-LHR
33h 40m1 stop
£4,245Korean Air
Find Deal
Mon, 27 Oct - Tue, 11 Nov

Korean Air flights from London Heathrow Airport to Guam

Our best Korean Air deals on London Heathrow Airport to Guam flight tickets
Korean Air
27 Oct
LHR18:50London Heathrow
33h 45m
1 stop
GUM14:35Tamuning Guam Intl
10 Nov
GUM16:50Tamuning Guam Intl
33h 40m
1 stop
LHR16:30London Heathrow
£4,154
Find similar
Korean Air
27 Oct
LHR18:50London Heathrow
33h 45m
1 stop
GUM14:35Tamuning Guam Intl
11 Nov
GUM16:50Tamuning Guam Intl
33h 40m
1 stop
LHR16:30London Heathrow
£4,245
Find similar
Korean Air
25 Oct
LHR19:35London Heathrow
34h 00m
1 stop
GUM14:35Tamuning Guam Intl
10 Nov
GUM16:50Tamuning Guam Intl
33h 40m
1 stop
LHR16:30London Heathrow
£4,560
Find similar

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 19 August 2025.
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

Mon 27/10

10:35-14:35

2 stops42h 00m

Tamuning Guam Intl

Mon 10/11

16:50-22:00

2 stops39h 10m

£2,850

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 27/10

09:30-01:30

2 stops30h 00m

Tamuning Guam Intl

Tue 11/11

02:30-18:05

1 stop25h 35m

£2,904

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 27/10

09:30-01:30

2 stops30h 00m

Tamuning Guam Intl

Sun 9/11

02:30-18:05

1 stop25h 35m

£2,928

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 27/10

09:30-01:30

2 stops30h 00m

Tamuning Guam Intl

Mon 10/11

02:30-18:05

1 stop25h 35m

£2,935

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sun 26/10

06:30-01:30

2 stops33h 00m

Tamuning Guam Intl

Tue 11/11

02:30-18:05

1 stop25h 35m

£2,974

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sat 25/10

20:35-01:30

2 stops43h 55m

Tamuning Guam Intl

Tue 11/11

02:30-18:05

1 stop25h 35m

£2,976

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sun 26/10

06:30-01:30

2 stops33h 00m

Tamuning Guam Intl

Sun 9/11

02:30-18:05

1 stop25h 35m

£2,997

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sun 26/10

06:30-01:30

2 stops33h 00m

Tamuning Guam Intl

Mon 10/11

02:30-18:05

1 stop25h 35m

£3,006

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 27/10

18:50-14:35

1 stop33h 45m

Tamuning Guam Intl

Mon 10/11

16:50-16:30

1 stop33h 40m

£4,154

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 27/10

18:50-14:35

1 stop33h 45m

Tamuning Guam Intl

Tue 11/11

16:50-16:30

1 stop33h 40m

£4,245

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 day to depart on your flight to Guam?

Our data shows that Sunday is the least expensive day to fly to Guam. Tickets to fly out on this day can be as low as £844. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Guam for around £2,016.

What is the cheapest time of day to depart on your flight to Guam?

Our data shows that the cheapest London Heathrow Airport to Guam flights are usually those with departure times in the evening. Our users have found flights to Guam in the evening for as low as £1,037. In contrast, the most expensive time of day to depart to Guam is in the afternoon when prices are around £1,109.

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

Best price found

£377

Fastest flight time

18h 10m

Direct flights

None

Airports in Guam

1 airport
The best one-way flight to Guam from London Heathrow Airport in the past 72 hours is £377. The best return flight deal from London Heathrow Airport to Guam found on momondo in the last 72 hours is £2,850.
The fastest flight from London Heathrow Airport to Guam takes 18h 10m
There are no direct flights from London Heathrow Airport to Guam. Popular non-direct route for this connection is London Heathrow Airport - Tamuning Guam Intl Airport.
There is 1 airport near Guam: Tamuning Guam Intl (GUM)
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  • 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 many operators does momondo search for flights from London Heathrow Airport to Guam?

  • 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.

Best airlines flying from London Heathrow Airport to Guam

Compare and see reviews for airlines that fly from London Heathrow Airport to Guam with momondo
Airline
Rating
Free Cancellation
Price
Japan AirlinesPriceFrom £814Free CancellationRating
8.3
1,550 reviews
Search Japan Airlines flights
Korean AirPriceFrom £1,020Free CancellationRating
8.4
1,131 reviews
Search Korean Air flights

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 £873