Cheap flights from Guam to London Heathrow Airport from £874
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
Find flight deals from Guam to Heathrow
Cheapest flights from Guam to HeathrowExplore the most affordable flight options available from Guam to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.
Explore the most affordable flight options available from Guam to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.
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 13 June 2025.
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
TamuningLondon
GUM - LHR
GUMLHR
Tamuning Guam Intl
Mon 18/8
03:40-22:00
2 stops27h 20m
London Heathrow
Sun 24/8
10:15-02:30
2 stops31h 15m
TamuningLondon
GUM - LHR
GUMLHR
Tamuning Guam Intl
Tue 19/8
17:00-17:20
1 stop33h 20m
London Heathrow
Sun 24/8
19:35-00:10
1 stop19h 35m
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.
Cheapflights Insights
Everything you need to know about your flight from Guam to London Heathrow Airport
Rainfall in Heathrow by month
Plan your trip to Heathrow by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.
Temperature in Heathrow by month
Plan your trip to Heathrow by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 13 June 2025.
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Myung Suk,May 2025
ICN - LAX
Food
Boarding
Crew
Entertainment
Comfort
Overall
Reviews
Myung Suk,May 2025
ICN - LAX
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.
Travelling to a place near Guam?
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Alternative routes for Guam to Heathrow
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