Cheap flights from Guam to London Heathrow Airport from £406

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 24/5. Fares are subject to change and may not be available on all flights or dates of travel.
GUM — LHR
18 May — 25 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Guam to Heathrow

Enter your travel dates to find the best prices.

One-way flights from Guam to Heathrow
Search for one-way flight options from Guam to Heathrow. Find affordable one-way fares based on user searches. Data last updated 18 April 2026.

Sun 24/500:50
GUM
-
LHR
2 stops50h 50m
Multiple Airlines
Deal found 15/4£406
Mon 21/904:40
GUM
-
LHR
3 stops35h 15m
Multiple Airlines
Deal found 13/4£583
Mon 12/1006:00
GUM
-
LHR
2 stops39h 25m
Multiple Airlines
Deal found 14/4£587
Mon 7/906:00
GUM
-
LHR
2 stops43h 10m
Multiple Airlines
Deal found 14/4£625
Sat 23/500:50
GUM
-
LHR
3 stops44h 55m
Multiple Airlines
Deal found 15/4£703
Sun 6/900:50
GUM
-
LHR
1 stop25h 30m
Korean Air
Deal found 16/4£938
Sun 11/1002:00
GUM
-
LHR
1 stop24h 20m
Korean Air
Deal found 16/4£1,027

Cheapflights Fare Finder

 
Customise your flight search to find flights from Guam to Heathrow 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 18 April 2026.
Use the filters below to find and compare flights from Guam to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest one-way

TamuningLondon

GUM - LHR

GUMLHR

Tamuning Guam Intl

Mon 7/9

06:00-16:10

2 stops43h 10m

£587

TamuningLondon

GUM - LHR

GUMLHR

Tamuning Guam Intl

Sat 23/5

00:50-12:45

2 stops44h 55m

£625
Fastest single journey

TamuningLondon

GUM - LHR

GUMLHR

Tamuning Guam Intl

Mon 21/9

04:40-05:55

2 stops34h 15m

£662

TamuningLondon

GUM - LHR

GUMLHR

Tamuning Guam Intl

Mon 7/9

17:20-18:50

1 stop34h 30m

£938

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Sorted by cheapest first

Best time to book a flight from Guam to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Guam 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 Guam to London Heathrow Airport
No data available for this route at this time. Please check back soon.

Related info for your journey

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

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

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

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

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

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

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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Watford
Kingston upon Thames
Romford
Eastbourne
Swindon
Chelmsford
Ipswich
Southend-on-Sea

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