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Cheap flights from London Heathrow Airport to Tamuning from £529

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 28/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — GUM
16 Nov — 23 Nov1
1 adult
1 adult, Economy

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 17 October 2025.

Mon 3/1118:50LHR - GUM
1 stop20h 10mKorean Air
Sun 9/1102:40GUM - LHR
1 stop23h 50mKorean Air
Deal found 15/10£1,168
Mon 3/1107:55LHR - GUM
2 stops34h 25mUnited Airlines
Mon 10/1107:40GUM - LHR
2 stops38h 20mUnited Airlines
Deal found 15/10£1,922
Mon 3/1118:10LHR - GUM
2 stops58h 25mJapan Airlines
Mon 10/1116:35GUM - LHR
2 stops49h 45mJapan Airlines
Deal found 16/10£2,050
Wed 31/1209:55LHR - GUM
2 stops29h 15mMultiple Airlines
Mon 2/302:20GUM - LHR
1 stop25h 45mMultiple Airlines
Deal found 16/10£3,202
Tue 30/1221:30LHR - GUM
2 stops41h 40mMultiple Airlines
Mon 2/302:20GUM - LHR
1 stop25h 45mMultiple Airlines
Deal found 16/10£3,251
Wed 31/1218:50LHR - GUM
1 stop18h 15mKorean Air
Sat 28/216:50GUM - LHR
1 stop33h 40mKorean Air
Deal found 16/10£4,200
Tue 30/1218:30LHR - GUM
1 stop34h 05mJapan Airlines
Tue 3/316:35GUM - LHR
1 stop23h 50mJapan Airlines
Deal found 16/10£4,697
Tue 30/1218:50LHR - GUM
1 stop18h 15mKorean Air
Fri 27/201:00GUM - LHR
1 stop25h 30mKorean Air
Deal found 16/10£5,587
Wed 31/1218:50LHR - GUM
1 stop18h 15mKorean Air
Mon 2/301:00GUM - LHR
1 stop25h 30mKorean Air
Deal found 16/10£6,677
Tue 30/1218:50LHR - GUM
1 stop18h 15mKorean Air
Sat 28/201:00GUM - LHR
1 stop25h 30mKorean Air
Deal found 16/10£6,975

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 17 October 2025.

Round-trip from

£718

One-way from

£529

Popular in

October

Cheapest in

June

Average price

£1,173
19/2-9/3
  • 19/2-9/3
  • 4 total stops
  • 57h 20m total
  • London to Tamuning
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28/1
  • 28/1
  • 2 total stops
  • 39h 55m 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 October 2025
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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 17 October 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

Thu 19/2

06:30-23:05

2 stops30h 35m

Tamuning Guam Intl

Tue 10/3

16:50-17:20

2 stops34h 30m

£1,138

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

£1,151

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sun 15/3

18:50-23:05

1 stop18h 15m

Tamuning Guam Intl

Thu 19/3

16:50-16:30

1 stop33h 40m

£1,188

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Tue 24/2

16:35-23:05

2 stops44h 30m

Tamuning Guam Intl

Fri 27/2

01:00-16:30

1 stop25h 30m

£1,323

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Thu 19/2

18:50-23:05

1 stop18h 15m

Tamuning Guam Intl

Tue 10/3

16:50-16:30

1 stop33h 40m

£1,365

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sun 15/3

06:15-14:35

2 stops46h 20m

Tamuning Guam Intl

Thu 19/3

16:35-12:05

2 stops53h 30m

£1,384

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Wed 28/1

21:10-23:05

2 stops39h 55m

£529

Flights are sorted by cheapest return flights first.

Deals found on 16/10

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 17 October 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 17 October 2025.
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
1,150 reviews
Check prices

Food

8.1

Overall

8.4

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very Good
1,150 reviews
Korean Air
8.4
Very Good
1,150 reviews
Check prices

Food

8.1

Overall

8.4

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Japan Airlines
8.3
Very Good
1,579 reviews
Korean Air
8.4
Very Good
1,150 reviews
Check prices

Food

8.1

Overall

8.4

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

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 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 £820, 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

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 2 airlines flying from Heathrow to Tamuning

Discover the top 2 airlines 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 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest£820Average£880FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Korean AirCheapest£1,028Average£1,110FlexibilityNo cancel feeOn-time81%
Search Korean Air flights

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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