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Cheap flights from London to Guam from £998

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — GUM
1 Jul — 8 Jul1
1 adult

Cheap flight deals from London to Guam

Keep the following information in mind while searching for London to Guam flight deals. Data was last updated 26 June 2025.

Round-trip from

£998

Popular in

October

Cheapest in

June

Average price

£858
Japan Airlines
  • Japan Airlines
  • 10/8-17/8
  • 4 total stops
  • 105h 25m total
  • London to Guam
Highest demand for flights based on searches. 2% potential increase in price (£19 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (£11 potential savings vs. average return price).
Average for round-trip flights in June 2025

Find flight deals from London to Guam

Cheapest flights from London to Guam
Explore the most affordable flight options available from London to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 June 2025.

Sun 10/820:00LHR - GUM
2 stops57h 40mJapan Airlines
Sun 17/816:40GUM - LHR
2 stops47h 45mJapan Airlines
Deal found 26/6£998
Thu 26/610:10LGW - GUM
2 stops29h 00mMultiple Airlines
Mon 30/615:55GUM - LGW
2 stops35h 35mMultiple Airlines
Deal found 24/6£1,024
Thu 26/606:30LHR - GUM
2 stops23h 15mMultiple Airlines
Mon 30/615:55GUM - LHR
2 stops39h 05mMultiple Airlines
Deal found 24/6£1,099
Fri 8/819:35LHR - GUM
1 stop19h 35mKorean Air
Fri 15/817:00GUM - LHR
1 stop33h 20mKorean Air
Deal found 24/6£1,778

Cheapflights Fare Finder

Customise your flight search to find flights from London 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 26 June 2025.
Use the filters below to find and compare flights from London to Guam that are best for you.

Fly from

London

Fly to

Guam

Route

Depart

Return

Price

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sun 10/8

20:00-14:40

2 stops57h 40m

Tamuning Guam Intl

Sun 17/8

16:40-07:25

2 stops47h 45m

£998

LondonTamuning

LGW - GUM

LGWGUM

London Gatwick

Fri 8/8

12:35-02:30

2 stops28h 55m

Tamuning Guam Intl

Thu 14/8

03:40-18:35

2 stops23h 55m

£1,108

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sat 9/8

20:25-02:30

2 stops45h 05m

Tamuning Guam Intl

Fri 15/8

03:40-20:30

2 stops25h 50m

£1,129

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Fri 8/8

19:35-00:10

1 stop19h 35m

Tamuning Guam Intl

Fri 15/8

17:00-17:20

1 stop33h 20m

£1,778

Flights are sorted by cheapest return flights first.

Deals found on 26/6

Best time to book a flight from London to Guam

Have a flexible travel schedule? Discover the best time to fly to Guam from London 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 to Guam

What is the cheapest time of day to fly from LON to GU?

Find hourly flight availability from London 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 26 June 2025.

When flying from London 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.

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 26 June 2025.
Get a feel of what it's like to fly with Korean Air and Japan Airlines from London to Guam by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Related info for your journey

Find useful and relevant information for your journey from London to Guam. 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 London to Guam that include hotel bookings?

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to Guam

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from London to Guam

Discover the top 2 airlines that operate flights from London 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 26 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest£808Average£896FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Korean AirCheapest£1,013Average£1,093FlexibilityNo cancel feeOn-time81%
Search Korean Air flights

Fly with Cheapflights

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How does Cheapflights help users find flights from London to Guam?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Guam. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from London to Guam?

Cheapflights helps you find that perfect flight to Guam from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Guam with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from London to Guam, users can toggle the no change fees filter when performing a flight search.

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