Find Cheap Flights from Bangkok to London Heathrow Airport – Compare and Save

These are the earliest and latest flight times available from Bangkok to London Heathrow Airport:

• Earliest: departs at 00:25 and lands at 13:40
• Latest: departs at 13:20 and lands at 02:35.

The flight takes about 13h 15m.

Four cabin classes are available on flights from Bangkok to London Heathrow Airport:

• Economy class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

A direct flight from Bangkok to London Heathrow Airport takes 13h 15m, covering 5,934 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Return flights from Bangkok to London Heathrow Airport range from £650 to £876, with an average of £783 over the past 12 months. Anything below £650 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 4% above the £783 route average. Book 12 weeks before departure for the lowest fares.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £480 return via Stockholm Arlanda (ARN), compared with £863 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £52–£76 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

Afternoon is the busiest departure period on Bangkok to London Heathrow Airport flights, with 66% leaving in that window. Night departures account for 33%, Morning flights for 1%, and Evening flights for 0%.

London Heathrow Airport (LHR) hosts 5 major car hire companies, with daily rates starting from around £5 for economy cars. Top options include:

• GREEN MOTION
• DRIVALIA
• Europcar
• Alamo
• Hertz

Flights from Bangkok to London Heathrow Airport may depart from several airports in Bangkok area, including Bangkok Suvarnabhumi (BKK) and Bangkok Don Mueang Intl (DMK). Flights usually arrive at London Heathrow (LHR).

Night flights have the fewest delays on this route, while afternoon departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Bangkok to London Heathrow Airport route, 11% of flights were delayed in the past three months, with delays averaging 1h 35m.

One-stop flights from Bangkok to London Heathrow Airport most commonly connect through:

• Abu Dhabi Zayed Intl (AUH) – 28% of one-stop connections
• Doha Hamad Intl (DOH) – 16% of one-stop connections
• Muscat Seeb (MCT) – 16% of one-stop connections
• Dubai Intl (DXB) – 12% of one-stop connections

Yes. Flexible dates can save you up to 10% on flights from Bangkok to London Heathrow Airport. Tuesday is the cheapest departure day at £747 return on average, while Saturday is the most expensive at £821, a difference of £74.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

2 airlines operate flights between Bangkok and London Heathrow Airport. The airlines offering direct flights on this route include:

• Thai Airways
• EVA Air

Flying via Vienna Intl (VIE) gives the shortest average 1-stop total travel time of 14h 17m, compared to 14h 36m via Zurich (ZRH) and 15h 26m via Dubai Intl (DXB).

London Heathrow Airport is 6 hours behind Bangkok (British Time vs Indochina Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in London Heathrow Airport are Hyde Park, Tower Bridge, and Royal Albert Hall. These are among the most viewed places in London Heathrow Airport on KAYAK.

Among airlines operating Bangkok to London Heathrow Airport flights:

• Thai Airways: offers free seat selection
• EVA Air: offers extra legroom

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Thai Airways: a cabin bag and a checked bag in Economy class
• EVA Air: a cabin bag and a checked bag in Economy class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.

When flying with Thai Airways, you are allowed to bring the following luggage included in your ticket price. Typically, Economy allows 35 kg, Premium Economy and Royal Silk Class permits 40 kg and Royal First Class has a 50 kg allowance. You are also allowed to buy extra luggage.

To save time and get the seat you desire, it is advisable to check in before you arrive at the airport. With Austrian Airlines, you are able to check in online 48 hours before your departure. Make sure you still get to the airport at least 3 hours before your flight.

If you want to indulge and get top-class business service, choose either Qatar or Emirates. Qatar has been voted as one of the best business-class experiences in the world, and Emirates is not far behind. Business class offers reclining lie-flat seats, fine dining, swivel chairs and private workspaces. You are given dedicated airline staff attention at all times.

If you are an environmentally conscious traveller, then you should book your flight with either KLM or Air France, which typically have smaller carbon footprints. KLM releases roughly 57% less carbon, while Air France emits around 56% less per person per flight. Do your part in helping them improve their sustainability mission for the future.