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Cheap flights from London Heathrow Airport to Sumatra from £344

LHR — KNO
12 Oct — 19 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Sumatra

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Sumatra

Sat 7/1109:55 -
3 stops26h 20m
Sat 21/1117:45 -
2 stops31h 40m
Deal found 10/9£627
Tue 27/1006:00 -
3 stops22h 30m
Tue 3/1107:55 -
2 stops29h 00m
Deal found 11/9£633
Sat 31/1009:30 -
3 stops26h 45m
Sun 8/1106:25 -
3 stops31h 10m
Deal found 8/9£652
Sat 14/1120:05 -
1 stop24h 10m
Wed 2/1206:25 -
2 stops30h 30m
Deal found 8/9£666
Sat 14/1117:10 -
2 stops31h 45m
Wed 2/1220:25 -
2 stops18h 40m
Deal found 8/9£690
Wed 7/1022:10 -
2 stops31h 20m
Wed 14/1012:05 -
1 stop23h 50m
Deal found 9/9£932
Wed 7/1020:40 -
2 stops32h 35m
Wed 14/1012:00 -
2 stops32h 25m
Deal found 9/9£1,022
Tue 22/908:25 -
2 stops26h 05m
Sun 4/1012:00 -
2 stops31h 15m
Deal found 11/9£1,042

Find flight deals from Heathrow to Sumatra

Round-trip from

£627

One-way from

£344

Popular in

December

Cheapest in

March

Average price

£798
7/11-21/11
  • 7/11-21/11
  • 5 total stops
  • 58h 00m total
  • London to Sumatra
Search Deals
24/11-31/12
  • 24/11-31/12
  • 3 total stops
  • 44h 10m total
  • London to Sumatra
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London Heathrow Airport to Sumatra that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonMedan

LHR London Heathrow - KNO Medan Kuala Namu Intl

LHRKNO

London Heathrow

Fri 27/11

21:10-16:10

2 stops36h 00m

Medan Kuala Namu Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£390

LondonMedan

LHR London Heathrow - KNO Medan Kuala Namu Intl

LHRKNO

London Heathrow

Sun 29/11

21:30-12:00

2 stops31h 30m

Medan Kuala Namu Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£392

LondonMedan

LHR London Heathrow - KNO Medan Kuala Namu Intl

LHRKNO

London Heathrow

Thu 26/11

09:30-16:10

2 stops23h 40m

Medan Kuala Namu Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£439

LondonMedan

LHR London Heathrow - KNO Medan Kuala Namu Intl

LHRKNO

London Heathrow

Sat 28/11

06:50-14:15

3 stops24h 25m

Medan Kuala Namu Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£451

LondonMedan

LHR London Heathrow - KNO Medan Kuala Namu Intl

LHRKNO

London Heathrow

Sat 28/11

18:40-07:55

2 stops30h 15m

Medan Kuala Namu Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£473

LondonMedan

LHR London Heathrow - KNO Medan Kuala Namu Intl

LHRKNO

London Heathrow

Tue 24/11

10:40-16:10

1 stop22h 30m

Medan Kuala Namu Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£484
Fastest return journey

LondonMedan

LHR London Heathrow - KNO Medan Kuala Namu Intl

LHRKNO

London Heathrow

Tue 24/11

20:35-19:35

1 stop16h 00m

Medan Kuala Namu Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£490

LondonMedan

LHR London Heathrow - KNO Medan Kuala Namu Intl

LHRKNO

London Heathrow

Mon 30/11

20:35-19:35

1 stop16h 00m

Medan Kuala Namu Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£490

LondonMedan

LHR London Heathrow - KNO Medan Kuala Namu Intl

LHRKNO

London Heathrow

Mon 30/11

18:40-07:55

2 stops30h 15m

Medan Kuala Namu Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£502

LondonMedan

LHR London Heathrow - KNO Medan Kuala Namu Intl

LHRKNO

London Heathrow

Wed 23/9

08:25-15:00

2 stops48h 35m

Medan Kuala Namu Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£540

Flights are sorted by cheapest return flights first.

Deals found on 8/9

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Heathrow to Sumatra

Have a flexible travel schedule? Discover the best time to fly to Sumatra from Heathrow with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Sumatra

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

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Sumatra (average of £471). Flying from London Heathrow Airport to Sumatra in July is currently the most expensive (average of £1,295). 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 a feel of what it's like to fly with Singapore Airlines from London Heathrow Airport 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
1,600 reviews
Check prices

Crew

8.6

Boarding

8.3

Overall

8.2

Comfort

8.0

Food

7.8

Entertainment

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.
Singapore Airlines
8.2
Very Good
1,600 reviews
Singapore Airlines
8.2
Very Good
1,600 reviews
Check prices

Crew

8.6

Boarding

8.3

Overall

8.2

Comfort

8.0

Food

7.8

Entertainment

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Related info for your journey

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Sumatra?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Sumatra (average of £471). Flying from London Heathrow Airport to Sumatra in July is currently the most expensive (average of £1,295). 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

Top airline flying from Heathrow to Sumatra

AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest£603Average£761FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

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Certainly. Search results for flights to Sumatra from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

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