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Cheap flights from London Heathrow Airport to Tamuning from £1,103

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.
LHR — GUM
8 Jan — 15 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Tamuning

Enter your travel dates to find the best prices.

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 9 December 2025.

Mon 2/318:50LHR - GUM
1 stop33h 45mKorean Air
Fri 20/316:50GUM - LHR
1 stop33h 40mKorean Air
Deal found 7/12£1,103
Mon 2/306:35LHR - GUM
2 stops30h 30mMultiple Airlines
Fri 20/316:50GUM - LHR
1 stop33h 40mMultiple Airlines
Deal found 8/12£1,294
Mon 2/314:05LHR - GUM
2 stops38h 30mJapan Airlines
Fri 20/316:35GUM - LHR
2 stops26h 35mJapan Airlines
Deal found 7/12£1,546
Tue 24/218:50LHR - GUM
1 stop18h 15mKorean Air
Fri 27/201:00GUM - LHR
1 stop25h 30mKorean Air
Deal found 7/12£1,103
Tue 24/220:00LHR - GUM
2 stops41h 05mMultiple Airlines
Fri 27/201:00GUM - LHR
1 stop25h 30mMultiple Airlines
Deal found 7/12£1,403
Wed 4/214:15LHR - GUM
2 stops38h 20mMultiple Airlines
Wed 18/216:35GUM - LHR
2 stops29h 35mMultiple Airlines
Deal found 8/12£1,663
Wed 4/218:50LHR - GUM
1 stop33h 45mKorean Air
Tue 17/201:00GUM - LHR
1 stop25h 30mKorean Air
Deal found 8/12£2,700

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 9 December 2025.

Round-trip from

£1,103

Popular in

December

Cheapest in

November

Average price

£1,279
Korean Air
  • Korean Air
  • 2/3-20/3
  • 2 total stops
  • 67h 25m total
  • London to Tamuning
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£13 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 9 December 2025.
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

18:50-14:35

1 stop33h 45m

Tamuning Guam Intl

Fri 20/3

16:50-16:30

1 stop33h 40m

£1,103

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Tue 24/2

18:50-23:05

1 stop18h 15m

Tamuning Guam Intl

Fri 27/2

01:00-16:30

1 stop25h 30m

£1,103

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 2/3

06:35-23:05

2 stops30h 30m

Tamuning Guam Intl

Fri 20/3

16:50-16:30

1 stop33h 40m

£1,294

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Tue 24/2

20:00-23:05

2 stops41h 05m

Tamuning Guam Intl

Fri 27/2

01:00-16:30

1 stop25h 30m

£1,403

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 2/3

14:05-14:35

2 stops38h 30m

Tamuning Guam Intl

Fri 20/3

16:35-09:10

2 stops26h 35m

£1,546

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Wed 4/2

14:15-14:35

2 stops38h 20m

Tamuning Guam Intl

Wed 18/2

16:35-12:10

2 stops29h 35m

£1,663

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Wed 4/2

18:50-14:35

1 stop33h 45m

Tamuning Guam Intl

Tue 17/2

01:00-16:30

1 stop25h 30m

£2,700

Flights are sorted by cheapest return flights first.

Deals found on 7/12

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?

Find hourly flight availability from Heathrow to Tamuning. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 9 December 2025.

It’s optimal to fly from London Heathrow Airport to Tamuning in the morning. By choosing this option you can save up to 40% on the cost of your flight, compared to a flight at midday.

Reviews of airlines servicing Tamuning

Get insights into the airlines that provide service to Tamuning. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Tamuning. Reviews last updated 9 December 2025.
Get a feel of what it's like to fly with 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.
Japan Airlines
8.3
Very Good
1,651 reviews
Check prices

Entertainment

7.8

Comfort

8.2

Boarding

8.4

Crew

8.7

Food

7.7

Overall

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

BKK - NRT

Everything was was a great experience, the staff was very friendly and always had a smile on the face.
Japan Airlines
8.3
Very Good
1,651 reviews
Japan Airlines
8.3
Very Good
1,651 reviews
Check prices

Entertainment

7.8

Comfort

8.2

Boarding

8.4

Crew

8.7

Food

7.7

Overall

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

BKK - NRT

Everything was was a great experience, the staff was very friendly and always had a smile on the face.

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 1 airline.

  • 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 33h 45m. Your travel time can differ by up to . The distance between London Heathrow Airport and Tamuning is about 7483 mi.

  • What is the cheapest airline to fly from London Heathrow Airport to Tamuning round-trip?

    Japan Airlines, at £886, was found to be the cheapest airline from London Heathrow Airport to Tamuning..

  • 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

Top airline flying from Heathrow to Tamuning

Discover the top airline that operate flights from Heathrow to Tamuning. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 9 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest£886Average£1,224FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights

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?

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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