Cheap flights from London Heathrow to Khon Kaen

from as little as £677

21 nights in Khon Kaen, departing London Heathrow on 03 / Mar / 2026 with Qatar Airways (price found 13 hours ago)

Subject to availability, prices correct of the last 24 hours
Khon Kaen

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The London Heathrow / Khon Kaen route

All 9474 km of it

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Khon Kaen flight facts

What you need to know

Alternative flights from the UK to Khon Kaen

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Khon Kaen

03 / Mar / 2026 is currently the lowest priced day of the year to fly the London Heathrow/Khon Kaen route. There are around 153 flights on any given week from the UK to Khon Kaen and the cheapest month to fly right now is March.

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Min / Max Temperature (°C)
LOWEST

14 °C

AVG

26 °C

HIGHEST

37 °C

Rainfall (mm)
LOWEST

0 mm

AVG

99.2 mm

HIGHEST

270 mm

Key facts about Khon Kaen

How to get cheap flights from London Heathrow to Khon Kaen

Tips and advice from our flight experts

Search for cheap flights and last-minute deals with Netflights. We've scanned all the flights from London Heathrow to Khon Kaen, across the six airlines that offer this route. We've found that 03 / Mar / 2026 is the cheapest date to travel at the moment, but it's best to go through the results to see which flight suits you.

The most popular airlines offering flights to Khon Kaen are Thai Airways International, Qatar Airways & Turkish Airlines. Thai Airways International is the most popular one, but that doesn’t mean their flights will be the cheapest. If you can't find a flight time that suits you, why not look at flying out from a different airport?

Generally speaking, the flight from London Heathrow to Khon Kaen takes around 18 hrs 5 mins. The fastest flight takes 15 hrs to cover the 9474 km distance. You can view all flight times yourself in the results list.

The cheapest month to fly to Khon Kaen is December, while April is when the prices of flights, hotels and car hire will be at their highest. If you need somewhere to stay for your trip to Thailand, take a look at our accommodation options.

Other popular destinations near Khon Kaen

Where other people are flying to

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