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Cheap flights from London to Guam from £518

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
LON — GUM
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from London to Guam

Enter your travel dates to find the best prices.

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 5 November 2025.

Sun 9/1121:30LHR - GUM
2 stops30h 50mMultiple Airlines
Tue 18/1100:20GUM - LHR
2 stops52h 15mMultiple Airlines
Deal found 3/11£518
Sun 9/1107:25LGW - GUM
2 stops29h 35mMultiple Airlines
Tue 18/1100:20GUM - LGW
3 stops45h 45mMultiple Airlines
Deal found 3/11£747

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 5 November 2025.

Round-trip from

£629

Popular in

October

Cheapest in

June

Average price

£1,026
3/3-16/3
  • 3/3-16/3
  • 4 total stops
  • 57h 40m total
  • London to Guam
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 5 November 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

Tue 3/3

11:10-01:10

2 stops28h 00m

Tamuning Guam Intl

Mon 16/3

02:40-22:20

2 stops29h 40m

£629

LondonTamuning

LGW - GUM

LGWGUM

London Gatwick

Tue 3/3

10:30-01:10

3 stops28h 40m

Tamuning Guam Intl

Mon 16/3

02:40-14:20

3 stops45h 40m

£809

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 2/3

18:50-14:35

1 stop33h 45m

Tamuning Guam Intl

Fri 20/3

16:50-16:30

1 stop33h 40m

£1,104

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Sat 24/1

18:50-14:35

1 stop33h 45m

Tamuning Guam Intl

Mon 26/1

01:00-16:30

1 stop25h 30m

£1,186

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Tue 3/3

18:50-14:35

1 stop33h 45m

Tamuning Guam Intl

Tue 17/3

16:50-16:30

1 stop33h 40m

£1,186

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 16/3

18:50-14:35

1 stop33h 45m

Tamuning Guam Intl

Thu 19/3

16:50-16:30

1 stop33h 40m

£1,199

LondonTamuning

LGW - GUM

LGWGUM

London Gatwick

Tue 24/2

08:40-14:35

2 stops43h 55m

Tamuning Guam Intl

Sat 28/2

16:35-12:35

2 stops30h 00m

£1,463

Flights are sorted by cheapest return flights first.

Deals found on 3/11

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 5 November 2025.

It’s typically best to fly out from London to Guam in the morning. Doing so could potentially save you 40% on the flight price compared to flying at midday, which is usually more expensive.

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 5 November 2025.
Get a feel of what it's like to fly with 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.
Japan Airlines
8.3
Very Good
1,604 reviews
Check prices

Entertainment

7.8

Overall

8.3

Food

7.7

Comfort

8.2

Crew

8.7

Boarding

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

HND - JFK

I thought it will be Japan Airlines on the way back to New York too. So I was soooo disappointed. I never expected that it will be American Airlines.
Japan Airlines
8.3
Very Good
1,604 reviews
Japan Airlines
8.3
Very Good
1,604 reviews
Check prices

Entertainment

7.8

Overall

8.3

Food

7.7

Comfort

8.2

Crew

8.7

Boarding

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

HND - JFK

I thought it will be Japan Airlines on the way back to New York too. So I was soooo disappointed. I never expected that it will be American 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.

  • How long is the flight from London to Guam?

    There are many flights that can get you from London to Guam in 33h 45m. Fly via Korean Air to get the fastest option. Airlines will cover a distance of 7483 mi.

  • 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.

See more FAQs

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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 5 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest£843Average£903FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Korean AirCheapest£1,056Average£1,140FlexibilityNo cancel feeOn-time81%
Search Korean Air flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

Can Cheapflights notify me if prices for flights from London to Guam become cheaper?

Not ready to book yet? You can track prices for flights from London to Guam on Cheapflights with our Price Alert feature and get notified when better prices are available.

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