Thai Airways passengers travelling to London Heathrow will soon enjoy an upgraded first class service at the pointy end with the airline switching the route to its newer Boeing 747-400 aircraft.

A spokesperson for the airline confirmed to Australian Business Traveller that from October 26, passengers in ‘Royal First’ can unwind in Thai’s newer private suites between Bangkok and London.

That's a considerable improvement over the lie-flat first class seats on the A340-600 aircraft that the Boeing 747 replaces, and gives premium travellers much more consistency on the flagship route.

The airline flies from its Bangkok hub to London Heathrow twice-daily, with both flights on the receiving end of the jumbo upgrade.

That includes TG910: wheels-up at 12:15am and reaching the U.K. capital at 6:20am later that day, and TG916: leaving Thailand at 1:20pm for a 7:35pm arrival in London that evening.

On the return, TG911 takes to London’s skies at 11:50am daily and touches down in Bangkok at 6:10am the next morning, while TG917 has an evening departure at 9:35pm: parking at the gate at 3:55pm the following afternoon.

TG916 is the perfect onward connection for first class passengers travelling from Sydney to Bangkok on flight TG472, with a transit of just three hours in between flights – ample time for a massage at Thai’s Royal Orchid Spa.

Heading back from London, both TG911 and TG917 align perfectly for Sydney travellers jetting home on flights TG471 and TG475, respectively.

In a recent backtrack by the airline, Sydneysiders will continue to enjoy Boeing 747 first class flights on Thai Airways – previously flagged for replacement by smaller Boeing 777 aircraft from October 26, which were to come without first class.

Perth residents are also in for an improved flying experience from September 21 through to October 25, with the older Thai Airways Airbus A330 replaced with a shiny new Boeing 787 Dreamliner.

From October 26, the Airbus A330 returns to Western Australia – although travellers heading to Milan (Malpensa) from that date also score the Boeing 747 as a replacement for the Airbus A340-600.

Unlike London, Milan gets the older Boeing 747s with lie-flat seats in first class as opposed to the decadent suites enjoyed by London-bound travellers.

Also read: Thai offers flight simulator sessions for frequent flyer points

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