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

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Everything you should know

Direct flights
Every day
You can fly direct with Thai Airways and EVA Air. Average duration is 11h 36m
Direct flights
+1
Direct flights
+1
Top routes
LHR - BKK
Cheapest • 3% average savings
LHR - DMK
Most popular
Insights
Insights
Avoid delays
EVA Air
Most punctual • 97% on-time
Morning
Best time • Fewest delays
Insights
Insights
When to book
13 weeks
in advance
Our data shows that travellers who book at least 13 weeks in advance save around 6% compared to booking last minute.
Insights
Insights
When to travel
May
Cheapest • 20% price drop
December
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Haikou Meilan Intl (HAK)
Cheapest • Avg ฿19,639 (return)
Vienna Intl (VIE)
Shortest trip • 14h 30m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Heathrow to Bangkok (LHR-BKK)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Bangkok

Multiple Airlines Logo
LHR  London Heathrow Airport-TH1 Glasgow Thorntonhall
15369 kmmulti-stop
Multiple Airlines Logo
TH1  Glasgow Thorntonhall-LHR London Heathrow Airport
15369 kmmulti-stop
Multiple Airlines
Booking Insights

Price, demand, and travel trends for London Heathrow Airport to Bangkok flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

What's the cheapest day of the week to fly from London Heathrow Airport to Bangkok?

Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from London Heathrow Airport to Bangkok. It's 3% cheaper than the average day, while Friday is the most expensive, with prices 2% higher.

What is the cheapest month to fly from London Heathrow Airport to Bangkok?

•May is the cheapest month to fly from London Heathrow Airport to Bangkok at ฿25,434 return.
•December (฿43,235) and July (฿39,587) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 69% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from London Heathrow Airport to Bangkok the cheapest?

Flights from London Heathrow Airport to Bangkok are cheapest 13 weeks before departure. Booking in this window typically costs about 6% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for London Heathrow Airport to Bangkok flights

Low season

September
Beat the crowds with an average 32% drop in travellers.
The most popular month to fly with an average 35% increase in travellers.

When to book flights from Heathrow to Bangkok

Are your dates flexible? Find out the best times to travel from Heathrow to Bangkok based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your London Heathrow Airport to Bangkok flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • What are the earliest and latest flights from London Heathrow Airport to Bangkok?

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

    • Earliest: departs at 11:50 and lands at 23:26
    • Latest: departs at 21:35 and lands at 09:11.

    The flight takes about 11h 36m.

  • Which cabin classes can I book on flights from London Heathrow Airport to Bangkok?

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

    • Economy class
    • Premium Economy Class
    • Business Class

  • How long is a flight from London Heathrow Airport to Bangkok?

    A direct flight from London Heathrow Airport to Bangkok takes 11h 36m, covering 15,369 km.

  • Do I need a passport to fly from London Heathrow Airport to Bangkok?

    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.

  • How much should I expect to pay for a London Heathrow Airport to Bangkok flight?

    Return flights from London Heathrow Airport to Bangkok range from ฿25,710 to ฿38,546, with an average of ฿31,966 over the past 12 months. Anything below ฿25,710 counts as a good deal.

  • How expensive are last-minute London Heathrow Airport to Bangkok flights?

    Last-minute fares on this route (booked within two weeks of departure) are 0% below the route average of ฿31,966. Booking late can sometimes save you money, but availability is limited.

  • How much can I save by having a stopover when flying from London Heathrow Airport to Bangkok?

    On this route, stopover flights are cheaper than direct options on average. Stopover fares average ฿19,639 return via Haikou Meilan Intl (HAK), compared with ฿36,868 for direct.

  • What is the standard checked bag allowance on flights from London Heathrow Airport to Bangkok?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge ฿743–฿3,377 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

  • How are flight departures from London Heathrow Airport to Bangkok spread across the day?

    Night is the busiest departure period on London Heathrow Airport to Bangkok flights, with 66% leaving in that window. Morning departures account for 34%, Afternoon flights for 0%, and Evening flights for 0%.

  • Which airlines offer Wi-Fi on London Heathrow Airport to Bangkok flights?

    EVA Air is the only airline on the London Heathrow Airport to Bangkok route offering in-flight Wi-Fi. Pricing depends on fare class.

  • What car rental options are available in Bangkok?

    Since Bangkok is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near Bangkok Suvarnabhumi Airport (BKK) – daily rates from around ฿436:

    • Drive Car Rental
    • Alamo
    • Sixt
    • Yesaway
    • Hertz

    Near Bangkok Don Mueang Intl Airport (DMK) – daily rates from around ฿229:

    • Drive Car Rental
    • Alamo
    • Thai Rent
    • Chic Car Rent
    • Hertz

  • Which airports can I use when flying from London Heathrow Airport to Bangkok?

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

  • What time of day has the fewest delays on flights from London Heathrow Airport to Bangkok?

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

  • At what point is a flight considered delayed from London Heathrow Airport to Bangkok?

    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 London Heathrow Airport to Bangkok route, 10% of flights were delayed in the past three months, with delays averaging 1h 32m.

  • Which airports do connecting flights from London Heathrow Airport to Bangkok pass through?

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

    • Abu Dhabi Zayed Intl (AUH) – 28% of one-stop connections
    • Doha Hamad Intl (DOH) – 19% of one-stop connections
    • Muscat Seeb (MCT) – 10% of one-stop connections
    • Beijing Capital (PEK) – 6% of one-stop connections

  • Can I save money by using flexible dates for flights from London Heathrow Airport to Bangkok?

    Yes. Flexible dates can save you up to 5% on flights from London Heathrow Airport to Bangkok. Monday is the cheapest departure day at ฿31,210 return on average, while Friday is the most expensive at ฿32,663, a difference of ฿1,452.

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

  • Which airlines fly from London Heathrow Airport to Bangkok?

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

    • Thai Airways
    • EVA Air

  • How much time can I save by choosing a different stopover airport from London Heathrow Airport to Bangkok?

    Flying via Vienna Intl (VIE) gives the shortest average 1-stop total travel time of 14h 30m, compared to 15h 08m via Munich Franz Josef Strauss (MUC) and 15h 12m via Zurich (ZRH).

  • What is the time difference between London Heathrow Airport and Bangkok?

    Bangkok is 7 hours ahead of London Heathrow Airport (Indochina Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Bangkok?

    Some of the most popular sights in Bangkok are Victory Monument, Pratunam, and Siam Square. These are among the most viewed places in Bangkok on KAYAK.

  • Which airlines offer extra legroom and free seat selection on London Heathrow Airport to Bangkok flights?

    Among airlines operating London Heathrow Airport to Bangkok flights:

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

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

  • Which airlines include bags at no extra cost on London Heathrow Airport to Bangkok flights?

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

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

Your guide to booking London Heathrow Airport to Bangkok flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Friday. On this route, Monday flights average ฿31,210, which is about ฿1,452 less than Friday fares (4% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 13 weeks before you fly. On this route, that window historically saves about 6% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your London Heathrow Airport to Bangkok trip for May. Fares historically average ฿25,434 return in that month – typically ฿17,801 less than the most expensive month, which is December (based on the last 12 months).
  • For the best chance of arriving on time, fly with EVA Air. Over the past three months, 97% of EVA Air flights from London Heathrow Airport to Bangkok arrived on time, slightly above the route average of 90%. When flights on this route arrive late, they're delayed by an average of 1h 32m, so choosing an airline with strong on-time performance can make a difference if you're on a tight schedule.
  • If you have the time, taking a 1-stop flight through Haikou Meilan Intl Airport (HAK) can be cheaper than flying direct. The cheapest stopover option averages ฿19,639 return on this route – about ฿17,229 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, hotels close to the airport you're flying into can be a convenient option.

    Near Bangkok Suvarnabhumi Airport

    • Regency Bangkok Suvarnabhumi Airpor
    • Suvarnabhumi Ville Airport Hotel
    • Siam Mandarina Bangkok Suvarnabhumi Airport Hotel (Free Shuttle)

    Near Bangkok Don Mueang Intl Airport

    • Amari Don Muang Airport Bangkok
    • The Royal Bee Apart Hotel

Prefer to fly direct from London Heathrow to Bangkok?

 
Find which airlines fly direct from London Heathrow Airport to Bangkok, which days they fly and book direct flights.

Direct departures

London Heathrow to Bangkok

Monday

EVA Air,Thai Airways

EVA Air,Thai Airways

Tuesday

EVA Air,Thai Airways

EVA Air,Thai Airways

Wednesday

EVA Air,Thai Airways

EVA Air,Thai Airways

Thursday

EVA Air,Thai Airways

EVA Air,Thai Airways

Friday

EVA Air,Thai Airways

EVA Air,Thai Airways

Saturday

EVA Air,Thai Airways

EVA Air,Thai Airways

Sunday

EVA Air,Thai Airways

EVA Air,Thai Airways

See more direct flights

Direct returns

Bangkok to London Heathrow

Monday

EVA Air,Thai Airways

EVA Air,Thai Airways

Tuesday

EVA Air,Thai Airways

EVA Air,Thai Airways

Wednesday

EVA Air,Thai Airways

EVA Air,Thai Airways

Thursday

EVA Air,Thai Airways

EVA Air,Thai Airways

Friday

EVA Air,Thai Airways

EVA Air,Thai Airways

Saturday

EVA Air,Thai Airways

EVA Air,Thai Airways

Sunday

EVA Air,Thai Airways

EVA Air,Thai Airways

See more direct flights

More options for your flight from Heathrow to Bangkok

Complete your trip to Bangkok with a hotel stay or car hire

Car rentals in Bangkok
Hotels in Bangkok