Cheap flights from London Heathrow Airport to Guam from £1,048
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/6. Fares are subject to change and may not be available on all flights or dates of travel.
Find flight deals from Heathrow to Guam
Cheapest flights from Heathrow to GuamExplore the most affordable flight options available from Heathrow to Guam. 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 Heathrow to Guam. 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 Heathrow to Guam 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 London Heathrow Airport to Guam that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
LondonTamuning
LHR - GUM
LHRGUM
London Heathrow
Sun 27/7
22:05-02:30
2 stops43h 25m
Tamuning Guam Intl
Sat 2/8
03:40-19:50
2 stops49h 10m
LondonTamuning
LHR - GUM
LHRGUM
London Heathrow
Sat 26/7
19:10-14:40
2 stops58h 30m
Tamuning Guam Intl
Sat 2/8
16:40-20:20
2 stops36h 40m
LondonTamuning
LHR - GUM
LHRGUM
London Heathrow
Sat 26/7
19:35-00:10
1 stop19h 35m
Tamuning Guam Intl
Sat 2/8
17:00-17:20
1 stop33h 20m
Best time to book a flight from Heathrow to Guam
Have a flexible travel schedule? Discover the best time to fly to Guam from Heathrow with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to Guam
What is the cheapest time of day to fly from LHR to GU?
Find hourly flight availability from Heathrow to Guam. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2025.
When flying from London Heathrow Airport to Guam, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Rainfall in Guam by month
Plan your trip to Guam by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Guam 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 Guam when rainfall is around 65.0 mm.
Temperature in Guam by month
Plan your trip to Guam by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Guam, 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).
Reviews of airlines servicing Guam
Get insights into the airlines that provide service to Guam. 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 Guam. 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
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 Heathrow to Guam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Heathrow to Guam
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Heathrow to Guam
Discover the top 2 airlines that operate flights from Heathrow to Guam. 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 13 June 2025.
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How does Cheapflights help users find flights from Heathrow to Guam?
Cheapflights makes it easy to find Heathrow to Guam flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Heathrow to Guam?
Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Guam for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Heathrow to Guam with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Guam flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Heathrow to Guam become cheaper?
Yes! Start tracking prices for Heathrow to Guam flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.