Flights to Bangkok, Thailand under £400 🛕🇹🇭

Pirates, if a proper autumn spell in the Thai capital has been on your list, Hainan will fly you return from London Heathrow to Bangkok for £426 per person, with luggage included. The dates are set for 23 September to 6 October 2026, so you get a full thirteen days on the ground.

Details

London (LHR) → Bangkok (BKK)

Departure Date: 23 Sept 2026, 08:00 – 06 Oct 2026, 20:00

Flight Type: Round trip · Economy

Other Options

From LHR

Additional Information

Late September and early October catch the tail end of the rainy season, with highs around 32C and short, heavy downpours that tend to clear as fast as they arrive. Pack a light rain jacket, embrace the cheaper crowds, and you will find the city green and lively. Being a full-service fare, checked luggage comes as standard, so no scrambling to add bags later.

The Grand Palace, home to the revered Emerald Buddha, sits at 4.2/5 on TripAdvisor and is worth an early start before the heat builds. Across the river, the Temple of Dawn (Wat Arun) rates even higher at 4.4/5, and its porcelain-studded spire glows at golden hour when the light hits the Chao Phraya just right.

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