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Cheap flights from London to Sumatra from £347

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 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
LON — KNO
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 21 November 2025.

Wed 3/1216:55LGW - KNO
3 stops22h 25mMultiple Airlines
Sun 11/120:30KNO - LGW
2 stops20h 45mMultiple Airlines
Deal found 19/11£713
Wed 3/1219:45LHR - KNO
2 stops39h 35mMultiple Airlines
Sun 11/118:00KNO - LHR
1 stop28h 25mMultiple Airlines
Deal found 19/11£819
Wed 10/1215:45LGW - KNO
3 stops23h 35mMultiple Airlines
Sat 10/106:10KNO - LGW
3 stops40h 45mMultiple Airlines
Deal found 19/11£855
Sun 30/1114:05STN - PDG
2 stops38h 10mEmirates
Thu 4/1212:05PDG - STN
2 stops31h 00mEmirates
Deal found 20/11£869
Sun 30/1114:05STN - PDG
2 stops38h 10mEmirates
Wed 3/1212:05PDG - STN
2 stops36h 50mEmirates
Deal found 19/11£871
Sun 30/1109:40LGW - PDG
2 stops42h 35mEmirates
Wed 3/1212:05PDG - LGW
2 stops25h 35mEmirates
Deal found 20/11£874
Wed 3/1210:40LHR - KNO
1 stop38h 20mSingapore Airlines
Sun 11/120:30KNO - LHR
1 stop25h 50mSingapore Airlines
Deal found 19/11£884
Sun 30/1115:50LHR - PDG
2 stops36h 25mEmirates
Wed 3/1212:05PDG - LHR
2 stops26h 05mEmirates
Deal found 20/11£903
Thu 20/1108:40LGW - KNO
2 stops40h 50mQatar Airways
Mon 24/1116:50KNO - LGW
2 stops20h 05mQatar Airways
Deal found 19/11£1,027
Wed 10/1213:55LHR - KNO
1 stop33h 45mEtihad Airways
Sat 10/110:30KNO - LHR
2 stops59h 00mEtihad Airways
Deal found 19/11£1,027
Wed 10/1209:00LHR - KNO
2 stops27h 40mMultiple Airlines
Sat 10/116:50KNO - LHR
2 stops36h 05mMultiple Airlines
Deal found 19/11£1,052
Wed 3/1209:20LGW - KNO
1 stop15h 40mSingapore Airlines
Sun 11/120:30KNO - LGW
1 stop16h 55mSingapore Airlines
Deal found 19/11£1,190

Cheap flight deals from London to Sumatra

Keep the following information in mind while searching for London to Sumatra flight deals. Data was last updated 21 November 2025.

Round-trip from

£518

One-way from

£347

Popular in

December

Cheapest in

November

Average price

£513
SWISS
  • SWISS
  • 15/5-19/5
  • 4 total stops
  • 81h 50m total
  • London to Sumatra
Search Deals
7/12
  • 7/12
  • 2 total stops
  • 42h 05m total
  • London to Sumatra
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£8 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£32 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 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 21 November 2025.
Use the filters below to find and compare flights from London to Sumatra that are best for you.

Fly from

London

Fly to

Sumatra

Route

Depart

Return

Price

LondonMedan

LHR - KNO

LHRKNO

London Heathrow

Fri 15/5

08:45-08:00

2 stops41h 15m

Medan Kuala Namu Intl

Tue 19/5

08:45-19:20

2 stops40h 35m

£518

LondonMedan

LCY - KNO

LCYKNO

London City

Thu 5/3

17:40-08:00

2 stops31h 20m

Medan Kuala Namu Intl

Mon 9/3

20:30-18:40

2 stops29h 10m

£519

LondonMedan

LHR - KNO

LHRKNO

London Heathrow

Sun 18/1

13:20-12:00

2 stops39h 40m

Medan Kuala Namu Intl

Sun 1/2

16:50-15:25

1 stop29h 35m

£548

LondonMedan

LHR - KNO

LHRKNO

London Heathrow

Sun 18/1

08:50-19:00

2 stops27h 10m

Medan Kuala Namu Intl

Sun 1/2

08:40-12:05

1 stop34h 25m

£626

LondonMedan

LGW - KNO

LGWKNO

London Gatwick

Sun 18/1

08:40-20:45

3 stops29h 05m

Medan Kuala Namu Intl

Sun 1/2

13:55-06:30

3 stops47h 35m

£635

LondonMedan

LHR - KNO

LHRKNO

London Heathrow

Sun 18/1

10:25-16:00

1 stop22h 35m

Medan Kuala Namu Intl

Sun 1/2

16:50-15:25

1 stop29h 35m

£686

LondonMedan

LGW - KNO

LGWKNO

London Gatwick

Wed 3/12

16:55-22:20

3 stops22h 25m

Medan Kuala Namu Intl

Sun 11/1

20:30-10:15

2 stops20h 45m

£713

LondonMedan

LGW - KNO

LGWKNO

London Gatwick

Sun 18/1

09:25-08:00

1 stop15h 35m

Medan Kuala Namu Intl

Sun 1/2

08:50-06:25

1 stop28h 35m

£738

LondonMedan

LHR - KNO

LHRKNO

London Heathrow

Thu 5/3

08:50-06:40

1 stop14h 50m

Medan Kuala Namu Intl

Mon 9/3

12:50-12:05

2 stops30h 15m

£745

LondonMedan

LCY - KNO

LCYKNO

London City

Thu 5/3

09:40-08:00

2 stops39h 20m

Medan Kuala Namu Intl

Mon 9/3

08:50-17:40

2 stops39h 50m

£776

Flights are sorted by cheapest return flights first.

Deals found on 21/11

Showing 1-10 of 38 results
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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 £241). Flying from London to Sumatra in July is currently the most expensive (average of £755). 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.

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

Find hourly flight availability from London to Sumatra. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 November 2025.

One of the essential ways to save on airfare from London to Sumatra is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the evening could potentially save you up to 33% on airfare.

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 21 November 2025.
Get a feel of what it's like to fly with Singapore Airlines, Etihad Airways, andMalaysia Airlines 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
8.1
Very Good
1,407 reviews
Check prices

Crew

8.6

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Overall

8.1

Food

7.7

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Singapore Airlines
8.1
Very Good
1,407 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Crew

8.6

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Overall

8.1

Food

7.7

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Etihad Airways
7.4
Good
1,309 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Crew

8.6

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Overall

8.1

Food

7.7

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Malaysia Airlines
7.3
Good
281 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Crew

8.6

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Overall

8.1

Food

7.7

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

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 22h 35m. SWISS provides one of the quickest options available for as low as £686. 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 City - Medan Kuala Namu Intl, 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 £241). Flying from London to Sumatra in July is currently the most expensive (average of £755). 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

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Alternative routes for London to Sumatra

See prices for flight routes from nearby airports that may be better suited for you.
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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 21 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest£523Average£712FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Singapore AirlinesCheapest£609Average£753FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Malaysia AirlinesCheapest£615Average£674FlexibilityNo cancel feeOn-time67%
Search Malaysia 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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