Flying from London to Bangkok

The distance between London and Bangkok is approximately 9,533.8km. The average flight time between London and Bangkok is 11 hours 38 minutes. According to Trip.com data, travel demand is highest in July. October is generally the cheapest month to book.

Cheapest one-way
S$ 419
China Southern Airlines China Southern Airlines LON-BKK 34h 30m · 1 stop Sun, Sep 6
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Cheapest return
S$ 714
Hainan Airlines Hainan Airlines LON-BKK 30h · 2 stops Wed, Sep 2 - Tue, Sep 8
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Best time to book
January
Cheapest
July
Peak season for travel
Route details
9,533.8km
Flight distance
11h 38m
Average flight time

Explore the cheapest flights from London to Bangkok in the next three months. Based on Trip.com's data from the latest 7 days, one-way direct flights start at S$ 857, and round-trip direct tickets start at S$ 992.

Popular airlines from London to Bangkok

You can choose from 6 airlines that fly from London to Bangkok, including Thai Airways, Eva Air, and Qatar Airways. Thai Airways offers the lowest prices on this route.
Thai Airways logo Thai Airways
Eva Air logo Eva Air
Qatar Airways logo Qatar Airways
Emirates logo Emirates
China Eastern Airlines logo China Eastern Airlines
Air China logo Air China
Airlines are determined based on actual purchased flight tickets from London to Bangkok according to previous 12 months data from Trip.com.

Trip.com Price Insights on Flights from London to Bangkok.

What is the cheapest month for one-way flights from London to Bangkok?

The average price of one-way flights from London to Bangkok purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from London to Bangkok is January, with an average price of S$ 442, and the most expensive month is August, with an average price of up to S$ 681.

S$ 681
S$ 562
S$ 442
S$ 323
    Cheapest
  • S$ 681
    Aug
  • S$ 564
    Sep
  • S$ 574
    Oct
  • S$ 545
    Nov
  • S$ 547
    Dec
  • S$ 442
    Jan
  • S$ 532
    Feb
  • S$ 530
    Mar
  • S$ 476
    Apr
  • S$ 524
    May
  • S$ 533
    Jun
  • S$ 671
    Jul

What is the cheapest month for round-trip flights from London to Bangkok?

The average price of round-trip flights from London to Bangkok purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for round-trip flights from London to Bangkok is January, with an average price of S$ 653, and the most expensive month is August, with an average price of up to S$ 1,116.

S$ 1,116
S$ 885
S$ 653
S$ 422
    Cheapest
  • S$ 1,116
    Aug
  • S$ 886
    Sep
  • S$ 882
    Oct
  • S$ 796
    Nov
  • S$ 904
    Dec
  • S$ 653
    Jan
  • S$ 807
    Feb
  • S$ 760
    Mar
  • S$ 750
    Apr
  • S$ 709
    May
  • S$ 732
    Jun
  • S$ 896
    Jul

Frequently Asked Questions

  • Which airlines offer the cheapest flights from London (LON) to Bangkok (BKK)?

    Based on Trip.com data, China Southern Airlines offers one-way fares as low as S$ 419 on Cheapest nonstop routes (e.g. LGW to BKK on Sun, Sep 6), while Hainan Airlines offers Cheapest nonstop round-trips from S$ 714 departing on Wed, Sep 2 and returning on Tue, Sep 8.
  • At the moment, you can catch a direct flight from London to Bangkok with the following airlines, including: Thai Airways Eva Air Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 11 hours 38 minutes to fly from London (LON) to Bangkok (BKK).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from London to Bangkok is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 31 flight per week flying from London to Bangkok. You can check the weekly schedule for popular airlines on this route below: Thai Airways: S/M/T/W/T/F/S -- TG911 (12:46)
  • To find best deals on flights from London to Bangkok, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sun, Sep 6, with one-way flights priced at just S$ 419.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Thai Airways.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Bangkok travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from London to Bangkok is October, when demand for travel is lower.
  • After crunching the numbers on our August flight calendar, it's currently cheapest to fly from London to Bangkok on August 30, 2026 with Air China, with prices starting at S$ 717.
  • You can land at any one of the following hubs in Bangkok, with Heathrow Airport to Suvarnabhumi Airport (LHR-BKK) is by far the most common option on this route: Suvarnabhumi Airport (BKK) Don Mueang International Airport (DMK).
  • The time difference between Bangkok and London is 7h.
  • Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from London to Bangkok is S$ 840. Fares vary by travel date, airline and availability.
  • Based on Trip.com data for travel in the next 30 days, the average round-trip fare from London to Bangkok is S$ 1,476. The final price depends on the outbound and return dates, airline and fare conditions.
  • Enter London and Bangkok, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveller details and complete payment to receive your confirmation.
  • Condor, IndiGo and Air Arabiaare the most popular budget airlines flying from London to Bangkok. Check baggage, seat and payment fees before comparing the final price.

Note: Prices shown on this page are the lowest estimated prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are shown before payment. Charges for checked baggage, meals, Wi-Fi, and other optional services may also appear in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours, and with many routes refreshed in real time. The more popular the route, the more accurate the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.