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.

What are the cheapest airlines flying from London Heathrow Airport to Tamuning round-trip?

Japan Airlines, at £811, was found to be the cheapest airline from London Heathrow Airport to Tamuning. An alternate airline flying to your destination would be Korean Air.

What is the cheapest day to fly from London Heathrow Airport to Tamuning?

Travellers seeking maximum savings on their London Heathrow Airport to Tamuning flight should consider departing on Sunday afternoons when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Tamuning 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 Tamuning when rainfall is around 65.0 mm.

If weather is an important factor for your trip to Tamuning, 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 day to fly round-trip from London Heathrow Airport to Tamuning?

Travelers have found that booking a Saturday departure is the best way to save up to 139% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

What is the cheapest month to fly from London Heathrow Airport to Tamuning?

The best pricing can be found in the month of June. Prices to Tamuning from London Heathrow Airport average £1,017. You can even find prices in June for less than £1,017, as users have found deals to Tamuning from as low as £831. The month of October appears to be one of the more expensive times to travel to Tamuning from London Heathrow Airport. Flying in the targeted month can save you up to 13%.

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 2 different airlines.

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.

£1,089+ Flights from London Heathrow Airport to Tamuning

Cheap flight deals from Heathrow to Tamuning

Round-trip from	£1,090
Popular in	October
Cheapest in	June
Average price	£906

Korean Air
2/3-19/3
2 total stops
59h 15m total
London to Tamuning

Search Deals

High demand for flights, 0% potential price rise

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Cheapest flight prices on average. 1% potential price decrease (£10 potential savings vs. average return price).

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Average for round-trip flights in September 2025

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Find flight deals from Heathrow to Tamuning

Best flights from Heathrow to Tamuning
Discover carefully curated flight deals from Heathrow to Tamuning that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2025.

Mon 2/318:50LHR - GUM

1 stop18h 15mKorean Air

Fri 20/316:50GUM - LHR

1 stop33h 40mKorean Air

Deal found 13/9£1,089

Mon 2/314:05LHR - GUM

2 stops38h 30mJapan Airlines

Fri 20/316:35GUM - LHR

2 stops49h 50mJapan Airlines

Deal found 13/9£1,160

Mon 2/311:30LHR - GUM

2 stops41h 05mMultiple Airlines

Fri 20/316:50GUM - LHR

1 stop33h 40mMultiple Airlines

Deal found 14/9£1,347

Cheapflights Fare Finder

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

Fly from

Fly to

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

£1,089

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 2/3

14:05-14:35

2 stops38h 30m

Tamuning Guam Intl

Fri 20/3

16:35-08:25

2 stops49h 50m

£1,160

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 2/3

11:30-14:35

2 stops41h 05m

Tamuning Guam Intl

Fri 20/3

16:50-16:30

1 stop33h 40m

£1,347

Flights are sorted by cheapest return flights first.

Deals found on 13/9

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.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Tamuning

What is the cheapest time of day to fly from LHR to GUM?

It’s optimal to fly from London Heathrow Airport to Tamuning at midday. By choosing this option you can save up to 7% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Tamuning

Get a feel of what it's like to fly with Korean Air and Japan Airlines from London Heathrow Airport to Tamuning by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very Good

1,139 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Korean Air

8.4

Very Good

1,139 reviews

Korean Air

8.4

Very Good

1,139 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Japan Airlines

8.3

Very Good

1,559 reviews

Korean Air

8.4

Very Good

1,139 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Related info for your journey

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 2 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.
What are the cheapest airlines flying from London Heathrow Airport to Tamuning round-trip?
Japan Airlines, at £811, was found to be the cheapest airline from London Heathrow Airport to Tamuning. An alternate airline flying to your destination would be Korean Air.
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

Complete your trip

Tamuning car hire

Tamuning Guam Intl Airport car hire

Tumon car hire

Top 2 airlines flying from Heathrow to Tamuning

Airline	Cheapest	Average	Flexibility	On-time
Japan Airlines	Cheapest£811	Average£869	FlexibilityNo cancel fee	On-time79%	Search Japan Airlines flights
Korean Air	Cheapest£1,016	Average£1,097	FlexibilityNo cancel fee	On-time81%	Search Korean Air flights

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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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Cheap flights from London Heathrow Airport to Tamuning from £1,089

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Tamuning

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Heathrow to Tamuning

Best flights from Heathrow to TamuningDiscover carefully curated flight deals from Heathrow to Tamuning that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2025.

Discover carefully curated flight deals from Heathrow to Tamuning that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Tamuning

What is the cheapest time of day to fly from LHR to GUM?

Reviews of airlines servicing Tamuning

Get a feel of what it's like to fly with Korean Air and Japan Airlines from London Heathrow Airport to Tamuning by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

What are the cheapest airlines flying from London Heathrow Airport to Tamuning round-trip?

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

How can I find direct flights from Heathrow to Tamuning?

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

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.

Top 2 airlines flying from Heathrow to Tamuning

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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

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

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

100% Free

Book with Flexibility

Travel Smart

Best flights from Heathrow to Tamuning
Discover carefully curated flight deals from Heathrow to Tamuning that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2025.