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Cheap flights from London to Sumatra from £333

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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — KNO
14 Aug — 21 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Sumatra

Enter your travel dates to find the best prices.

Cheapest flights from London to Sumatra
Explore the most affordable flight options available from London to Sumatra. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 July 2026.

Wed 9/906:55
LGW
-
KNO
3 stops33h 25m
Multiple Airlines
Thu 24/909:20
KNO
-
LGW
2 stops27h 45m
Multiple Airlines
Deal found 12/7£529
Sat 26/917:30
LGW
-
KNO
3 stops35h 00m
Multiple Airlines
Sun 4/1015:00
KNO
-
LGW
2 stops22h 25m
Multiple Airlines
Deal found 12/7£545
Wed 9/906:55
LGW
-
KNO
3 stops33h 25m
Multiple Airlines
Sat 26/907:10
KNO
-
LGW
2 stops30h 15m
Multiple Airlines
Deal found 11/7£547
Wed 9/906:55
LGW
-
KNO
3 stops30h 20m
Multiple Airlines
Wed 23/906:10
KNO
-
LGW
2 stops22h 15m
Multiple Airlines
Deal found 11/7£625
Tue 22/918:00
LGW
-
PDG
2 stops31h 00m
Multiple Airlines
Sun 4/1007:55
PDG
-
LGW
2 stops29h 30m
Multiple Airlines
Deal found 12/7£636
Sat 26/919:30
LHR
-
KNO
2 stops54h 30m
Lufthansa
Sun 4/1008:50
KNO
-
LHR
2 stops38h 15m
Lufthansa
Deal found 12/7£638
Wed 9/916:25
LHR
-
KNO
2 stops21h 10m
Lufthansa
Thu 24/908:50
KNO
-
LHR
2 stops29h 50m
Lufthansa
Deal found 12/7£639
Wed 9/918:40
LHR
-
KNO
2 stops18h 55m
Multiple Airlines
Thu 24/908:50
KNO
-
LHR
2 stops41h 50m
Multiple Airlines
Deal found 11/7£650
Wed 9/909:15
LCY
-
KNO
2 stops28h 20m
SWISS
Thu 24/908:50
KNO
-
LCY
2 stops29h 50m
SWISS
Deal found 12/7£658
Tue 22/918:00
LGW
-
PDG
2 stops31h 00m
Multiple Airlines
Sat 3/1011:55
PDG
-
LGW
2 stops25h 30m
Multiple Airlines
Deal found 12/7£660
Wed 9/910:25
LGW
-
KNO
1 stop19h 30m
Multiple Airlines
Tue 22/917:50
KNO
-
LGW
1 stop19h 35m
Multiple Airlines
Deal found 14/7£662
Mon 21/911:40
LGW
-
PDG
2 stops23h 05m
Multiple Airlines
Sun 4/1007:55
PDG
-
LGW
2 stops29h 30m
Multiple Airlines
Deal found 12/7£676

Find flight deals from London to Sumatra

Keep the following information in mind while searching for London to Sumatra flight deals. Data was last updated 15 July 2026.

Round-trip from

£529

One-way from

£333

Popular in

December

Cheapest in

March

Average price

£1,102
9/9-24/9
  • 9/9-24/9
  • 5 total stops
  • 61h 10m total
  • London to Sumatra
Search Deals
20/8
  • 20/8
  • 3 total stops
  • 40h 30m total
  • London to Sumatra
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£25 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£29 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Sumatra 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 15 July 2026.
Use the filters below to find and compare flights from London to Sumatra that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonMedan

LGW - KNO

LGWKNO

London Gatwick

Wed 9/9

06:55-22:20

3 stops33h 25m

Medan Kuala Namu Intl

Sat 26/9

07:10-07:25

2 stops30h 15m

£547

LondonMedan

LCY - KNO

LCYKNO

London City

Wed 9/9

09:15-19:35

2 stops28h 20m

Medan Kuala Namu Intl

Thu 24/9

08:50-08:40

2 stops29h 50m

£658
Fastest return journey

LondonMedan

LGW - KNO

LGWKNO

London Gatwick

Wed 9/9

10:25-11:55

1 stop19h 30m

Medan Kuala Namu Intl

Tue 22/9

17:50-07:25

1 stop19h 35m

£662

LondonMedan

LCY - KNO

LCYKNO

London City

Wed 9/9

09:15-19:35

2 stops28h 20m

Medan Kuala Namu Intl

Sat 26/9

20:25-08:40

2 stops42h 15m

£703

LondonPadang

LGW - PDG

LGWPDG

London Gatwick

Wed 23/9

11:00-16:00

2 stops23h 00m

Padang Tabing

Sat 3/10

11:55-07:25

2 stops25h 30m

£714

LondonMedan

LHR - KNO

LHRKNO

London Heathrow

Tue 15/9

09:25-19:35

1 stop28h 10m

Medan Kuala Namu Intl

Fri 25/9

08:50-15:45

1 stop36h 55m

£738

LondonMedan

LCY - KNO

LCYKNO

London City

Wed 9/9

09:15-19:35

2 stops28h 20m

Medan Kuala Namu Intl

Wed 23/9

16:00-08:40

2 stops22h 40m

£749

LondonPadang

STN - PDG

STNPDG

London Stansted

Tue 22/9

06:55-16:00

2 stops27h 05m

Padang Tabing

Sun 4/10

07:55-09:55

2 stops32h 00m

£785

LondonMedan

LHR - KNO

LHRKNO

London Heathrow

Wed 9/9

09:25-19:35

1 stop28h 10m

Medan Kuala Namu Intl

Tue 22/9

20:25-19:30

1 stop29h 05m

£788

LondonPadang

LHR - PDG

LHRPDG

London Heathrow

Wed 23/9

09:30-08:30

2 stops41h 00m

Padang Tabing

Sun 27/9

17:15-07:00

2 stops43h 45m

£838

Flights are sorted by cheapest return flights first.

Deals found on 13/7

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from London to Sumatra

Have a flexible travel schedule? Discover the best time to fly to Sumatra 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 Sumatra

What is the cheapest month to book a flight from London to Sumatra?

Currently, May is the cheapest month in which you can book a flight from London to Sumatra (average of £360). Flying from London to Sumatra in July is currently the most expensive (average of £1,007). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Sumatra

Get insights into the airlines that provide service to Sumatra. 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 Sumatra. Reviews last updated 15 July 2026.
Get a feel of what it's like to fly with Singapore Airlines and Etihad Airways from London to Sumatra by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,572 reviews
Check prices

Entertainment

8.0

Food

7.8

Crew

8.6

Overall

8.2

Comfort

8.0

Boarding

8.3

Reviews

1 / 20
8.0
Excellent

Matt,Jun 2026

SIN - CMB

Crew were flat or busy but so awesome and polite. There was one guy, prob the senior crew member, looked and acted way too serious and too important to smile and say hello
Singapore Airlines
8.2
Very Good
1,572 reviews
Singapore Airlines
8.2
Very Good
1,572 reviews
Check prices

Entertainment

8.0

Food

7.8

Crew

8.6

Overall

8.2

Comfort

8.0

Boarding

8.3

Reviews

1 / 20
8.0
Excellent

Matt,Jun 2026

SIN - CMB

Crew were flat or busy but so awesome and polite. There was one guy, prob the senior crew member, looked and acted way too serious and too important to smile and say hello
Etihad Airways
7.3
Good
1,479 reviews
Singapore Airlines
8.2
Very Good
1,572 reviews
Check prices

Entertainment

8.0

Food

7.8

Crew

8.6

Overall

8.2

Comfort

8.0

Boarding

8.3

Reviews

1 / 20
8.0
Excellent

Matt,Jun 2026

SIN - CMB

Crew were flat or busy but so awesome and polite. There was one guy, prob the senior crew member, looked and acted way too serious and too important to smile and say hello

Related info for your journey

Find useful and relevant information for your journey from London to Sumatra. 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 Sumatra?

    A quick flight from London to Sumatra can take about 28h 10m. SWISS provides one of the quickest options available for as low as £738. The distance from London to Sumatra is about 6416 mi. This flight may include one or multiple stops.

  • What are the most popular routes from London to Sumatra?

    While some choose either London Heathrow - Medan Kuala Namu Intl or London Heathrow - Padang Tabing, London Gatwick - Medan Kuala Namu Intl is the most popular route from London to Sumatra.

  • Can I find deals for flights from London to Sumatra that include hotel bookings?

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

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

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

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

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

  • What is the cheapest month to book a flight from London to Sumatra?

    Currently, May is the cheapest month in which you can book a flight from London to Sumatra (average of £360). Flying from London to Sumatra in July is currently the most expensive (average of £1,007). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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.

Top 3 airlines flying from London to Sumatra

Discover the top 3 airlines that operate flights from London to Sumatra. 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 15 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest£474Average£846FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Malaysia AirlinesCheapest£546Average£1,000FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Singapore AirlinesCheapest£576Average£800FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines 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 Sumatra?

Deals for London to Sumatra flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Sumatra for you. Better yet — we are completely free to use.

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

Yes, we can. To see specific flights from London to Sumatra with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sumatra from London today and book when prices fit your budget.

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