Find flights
When to book

Cheap flights from London Heathrow Airport to Guam from £658

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — GUM
11 Jun — 18 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Guam

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Guam
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 12 May 2026.

Tue 23/608:25
LHR
-
GUM
2 stops45h 10m
Multiple Airlines
Tue 30/616:35
GUM
-
LHR
2 stops46h 50m
Multiple Airlines
Deal found 9/5£1,050
Thu 11/615:35
LHR
-
GUM
2 stops38h 00m
Multiple Airlines
Mon 22/616:35
GUM
-
LHR
2 stops30h 35m
Multiple Airlines
Deal found 6/5£1,124
Mon 28/919:35
LHR
-
GUM
1 stop19h 20m
Korean Air
Sun 11/1002:00
GUM
-
LHR
1 stop24h 20m
Korean Air
Deal found 11/5£1,211
Sat 28/1118:50
LHR
-
GUM
1 stop33h 45m
Korean Air
Wed 2/1216:50
GUM
-
LHR
1 stop33h 40m
Korean Air
Deal found 7/5£1,328

Find flight deals from Heathrow to Guam

Keep the following information in mind while searching for Heathrow to Guam flight deals. Data was last updated 12 May 2026.

Round-trip from

£1,050

One-way from

£658
23/6-30/6
  • 23/6-30/6
  • 4 total stops
  • 92h 00m total
  • London to Guam
Search Deals
22/9
  • 22/9
  • 3 total stops
  • 44h 40m total
  • London to Guam
Search Deals

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 12 May 2026.
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

Cheapest return flight

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Tue 23/6

08:25-14:35

2 stops45h 10m

Tamuning Guam Intl

Tue 30/6

16:35-06:25

2 stops46h 50m

£1,050
Fastest return journey

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Thu 11/6

15:35-14:35

2 stops38h 00m

Tamuning Guam Intl

Mon 22/6

16:35-14:10

2 stops30h 35m

£1,124

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Mon 28/9

19:35-15:35

1 stop35h 00m

Tamuning Guam Intl

Mon 12/10

17:20-21:25

2 stops37h 05m

£1,511
Cheapest one-way

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Tue 22/9

22:40-04:20

3 stops44h 40m

£658
Fastest single journey

LondonTamuning

LHR - GUM

LHRGUM

London Heathrow

Tue 22/9

13:25-15:35

1 stop41h 10m

£2,264

Flights are sorted by cheapest return flights first.

Deals found on 10/5

Sorted by cheapest first

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.
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 Heathrow Airport to Guam
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 Heathrow 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 Heathrow to Guam that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.