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Cheap flights from London Heathrow Airport to Tamuning from £519

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — GUM
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Tamuning

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Tamuning (GUM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 January 2026.

Round-trip from

£1,093

One-way from

£519

Popular in

December

Cheapest in

November

Average price

£1,046
Korean Air
  • Korean Air
  • 2/3-20/3
  • 2 total stops
  • 51h 55m total
  • London to Tamuning
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20/2
  • 20/2
  • 3 total stops
  • 31h 25m total
  • London to Tamuning
Search Deals
Highest demand for flights based on searches. 34% potential increase in price (£468 potential increase over avg. return price).
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Cheapest flight prices on average. 22% potential price decrease (£167 potential savings vs. average return price).
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Average for round-trip flights in January 2026
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Find flight deals from Heathrow to Tamuning

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Tamuning
Explore the most affordable flight options available from Heathrow to Tamuning. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 January 2026.

Fri 20/1114:15
LHR
-
GUM
2 stops38h 20m
Multiple Airlines
Tue 24/1116:35
GUM
-
LHR
2 stops29h 40m
Multiple Airlines
Deal found 15/1£941
Mon 2/318:50
LHR
-
GUM
1 stop18h 15m
Korean Air
Fri 20/316:50
GUM
-
LHR
1 stop33h 40m
Korean Air
Deal found 15/1£1,093
Tue 24/218:50
LHR
-
GUM
1 stop18h 15m
Korean Air
Sat 28/216:50
GUM
-
LHR
1 stop33h 40m
Korean Air
Deal found 15/1£1,138
Fri 20/1118:50
LHR
-
GUM
1 stop33h 45m
Korean Air
Tue 24/1116:50
GUM
-
LHR
1 stop33h 40m
Korean Air
Deal found 15/1£1,191
Fri 13/318:50
LHR
-
GUM
1 stop18h 15m
Korean Air
Tue 17/316:50
GUM
-
LHR
1 stop33h 40m
Korean Air
Deal found 15/1£1,197
Sat 14/318:50
LHR
-
GUM
1 stop33h 45m
Korean Air
Tue 17/301:00
GUM
-
LHR
1 stop25h 30m
Korean Air
Deal found 13/1£1,201
Sat 7/218:50
LHR
-
GUM
1 stop33h 45m
Korean Air
Sat 14/216:50
GUM
-
LHR
1 stop33h 40m
Korean Air
Deal found 14/1£1,227
Mon 2/309:00
LHR
-
GUM
2 stops28h 05m
Multiple Airlines
Fri 20/316:50
GUM
-
LHR
1 stop33h 40m
Multiple Airlines
Deal found 15/1£1,379

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Tamuning 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, Cheapflights users made 858,174 searches. Data last updated 16 January 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Tamuning that are best for you.

Fly from

Heathrow

Fly to

Tamuning

Route

Depart

Return

Price

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 2/3

18:50-23:05

1 stop18h 15m

Tamuning Guam Intl

Fri 20/3

16:50-16:30

1 stop33h 40m

£1,093

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Tue 24/2

18:50-23:05

1 stop18h 15m

Tamuning Guam Intl

Sat 28/2

16:50-16:30

1 stop33h 40m

£1,138

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Fri 13/3

18:50-23:05

1 stop18h 15m

Tamuning Guam Intl

Tue 17/3

16:50-16:30

1 stop33h 40m

£1,197

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sat 14/3

18:50-14:35

1 stop33h 45m

Tamuning Guam Intl

Tue 17/3

01:00-16:30

1 stop25h 30m

£1,201

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 2/3

09:00-23:05

2 stops28h 05m

Tamuning Guam Intl

Fri 20/3

16:50-16:30

1 stop33h 40m

£1,379

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Tue 24/2

17:45-23:05

2 stops43h 20m

Tamuning Guam Intl

Sat 28/2

16:50-16:30

1 stop33h 40m

£1,390

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Tue 24/2

10:20-14:35

2 stops42h 15m

Tamuning Guam Intl

Sat 28/2

16:35-12:30

2 stops53h 55m

£1,468

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Fri 20/2

10:00-03:25

3 stops31h 25m

£519

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Fri 20/2

18:50-23:05

1 stop18h 15m

£1,020

Flights are sorted by cheapest return flights first.

Deals found on 14/1

Best time to book a flight from Heathrow to Tamuning

Have a flexible travel schedule? Discover the best time to fly to Tamuning from Heathrow 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.

Related info for your journey

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

  • What airport do you fly into for flights to Tamuning from London Heathrow?

    Located just 1.1 mi from the city center, Tamuning Guam Intl is the airport most travelers will use when flying to Tamuning from London Heathrow. Booking flights from London Heathrow to Guam Intl (GUM) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 0 different airlines.

  • How long is the flight from London Heathrow Airport to Tamuning?

    Korean Air can get you from London Heathrow Airport to Tamuning in just under 18h 15m. Your travel time can differ by up to . The distance between London Heathrow Airport and Tamuning is about 7483 mi.

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

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

  • How can I find direct flights from Heathrow to Tamuning?

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

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

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

See more FAQs

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.

Complete your trip

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

Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to Tamuning?

Deals for Heathrow to Tamuning flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Tamuning?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Tamuning.

Can Cheapflights find flights from Heathrow to Tamuning with no change fees?

Need flexible booking options for your flight to Tamuning from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Tamuning become cheaper?

Of course! You can now track prices for flights from Heathrow to Tamuning and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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