£242 Find Cheap Flights from Bangkok to London Heathrow Airport – Compare and Save

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.

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.

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

• Thai Airways
• EVA Air

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).

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

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

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.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £470 return via Stockholm Arlanda (ARN), compared with £838 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £51–£74 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

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

• Abu Dhabi Zayed Intl (AUH) – 27% of one-stop connections
• Dubai Intl (DXB) – 15% of one-stop connections
• Doha Hamad Intl (DOH) – 15% of one-stop connections
• Muscat Seeb (MCT) – 12% of one-stop connections

Abu Dhabi Zayed Intl (AUH) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 6% on the Bangkok to London Heathrow Airport route. Tuesday is the cheapest departure day at £731 return on average, while Saturday is the most expensive at £778, a difference of £47. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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, 10% of flights were delayed in the past 3 months, with delays averaging 1 hour 36 minutes.

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%.

Some of the most popular sights in London Heathrow Airport are London Victoria Station, London Euston Railway Station, and Hyde Park. These are among the most viewed places in London Heathrow Airport on KAYAK.

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

• Earliest: departs at 00:25 and lands at 13:27
• Latest: departs at 13:20 and lands at 02:22.

The flight takes about 13h 02m.

Last-minute fares on this route (booked within 2 weeks of departure) run 5% above the route average of £754. Book 5 weeks before departure for the lowest fares.

A direct flight from Bangkok to London Heathrow Airport takes 13h 02m, 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.

One-way fares from Bangkok to London Heathrow Airport are currently lower than usual. Average one-way flight prices are about £247, which is 32% below the typical average for this route.

Night flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Vienna Intl (VIE) gives the shortest average 1-stop total travel time of 14h 15m, compared to 14h 40m via Zurich (ZRH) and 15h 18m via Munich Franz Josef Strauss (MUC).

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.

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

Return flights from Bangkok to London Heathrow Airport range from £638 to £853, with an average of £754 over the past 12 months. Anything below £638 counts as a good deal.