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Cheap flights from London Heathrow Airport to Tamuning from £397

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — GUM
1 Feb — 8 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 2 January 2026.

Tue 20/117:40LHR - GUM
2 stops21h 30mMultiple Airlines
Mon 9/202:40GUM - LHR
2 stops24h 50mMultiple Airlines
Deal found 1/1£933
Tue 20/118:50LHR - GUM
1 stop18h 15mKorean Air
Mon 9/201:00GUM - LHR
1 stop25h 30mKorean Air
Deal found 1/1£1,129
Mon 2/318:50LHR - GUM
1 stop18h 15mKorean Air
Fri 20/316:50GUM - LHR
1 stop33h 40mKorean Air
Deal found 1/1£1,144
Tue 24/218:50LHR - GUM
1 stop33h 45mKorean Air
Sat 28/216:50GUM - LHR
1 stop33h 40mKorean Air
Deal found 1/1£1,153
Fri 13/318:50LHR - GUM
1 stop18h 15mKorean Air
Mon 16/301:00GUM - LHR
1 stop25h 30mKorean Air
Deal found 31/12£1,196
Mon 2/308:50LHR - GUM
2 stops28h 15mMultiple Airlines
Fri 20/316:50GUM - LHR
2 stops29h 15mMultiple Airlines
Deal found 1/1£1,233

Find 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 2 January 2026.

Round-trip from

£933

One-way from

£397

Popular in

December

Cheapest in

November

Average price

£1,018
20/1-9/2
  • 20/1-9/2
  • 4 total stops
  • 46h 20m total
  • London to Tamuning
Search Deals
4/2
  • 4/2
  • 2 total stops
  • 42h 10m total
  • London to Tamuning
Search Deals
Highest demand for flights based on searches. 33% potential increase in price (£457 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 22% potential price decrease (£166 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 2 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

Tue 20/1

17:40-01:10

2 stops21h 30m

Tamuning Guam Intl

Mon 9/2

02:40-17:30

2 stops24h 50m

£933

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Tue 20/1

18:50-23:05

1 stop18h 15m

Tamuning Guam Intl

Mon 9/2

01:00-16:30

1 stop25h 30m

£1,129

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

£1,144

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Tue 24/2

18:50-14:35

1 stop33h 45m

Tamuning Guam Intl

Sat 28/2

16:50-16:30

1 stop33h 40m

£1,153

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Fri 13/3

18:50-23:05

1 stop18h 15m

Tamuning Guam Intl

Mon 16/3

01:00-16:30

1 stop25h 30m

£1,196

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 2/3

08:50-23:05

2 stops28h 15m

Tamuning Guam Intl

Fri 20/3

16:50-12:05

2 stops29h 15m

£1,233

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Wed 4/2

21:00-01:10

2 stops42h 10m

£397

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sun 1/2

21:00-01:10

2 stops42h 10m

£404

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Wed 7/1

21:30-01:10

2 stops41h 40m

£423

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sat 31/1

21:30-01:00

3 stops41h 30m

£457

Flights are sorted by cheapest return flights first.

Deals found on 2/1

Showing 1-10 of 13 results
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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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