Flights from London to Bangkok (2025 Deals & Price Alerts)

Planning to fly from London to Bangkok? With daily departures from both Heathrow (LHR) and Gatwick (LGW), travelers have multiple options to reach Thailand's capital. This busy route is served by world-class airlines like Thai Airways, British Airways, Emirates, and Qatar Airways. Whether you're after the lowest fares or the fastest journey, this guide covers everything you need to know.

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Quick Fast Facts: London → Bangkok Flights

Flight Duration

Direct flights take 11h 30m. One-stop routes average 13-15h.

Average Price

Roundtrip fares typically range from $650-$950, depending on season and booking time.

Main Airports

Departures from Heathrow (LHR) and Gatwick (LGW) to Bangkok Suvarnabhumi (BKK).

Cheapest Months

The best fares are usually found in May-June and September.

Find Cheap Flights from London to Bangkok

Compare live prices from Expedia and Kiwi.com to secure the best deals for your journey from London to Bangkok. Expedia is ideal if you want flexible packages and hotels, while Kiwi.com specializes in unlocking hidden “hacker fares” that can save up to 40%. Use both to make sure you never overpay.

Expedia Flight Search

Track prices, get flexible booking options, and bundle with hotels.

Kiwi.com Flight Search

Discover hidden cheap routes with multi-airline “hacker fares”.

Cheapest Months to Fly from London to Bangkok

Flight prices between London and Bangkok vary based on seasonality and demand. By avoiding peak travel periods, you can save 20–30% on average on your airfare. Here’s a breakdown of the best times to book:

🌱 Low Season (May–June, Sept–Oct)

These are the cheapest months to fly from London, especially May and September. Expect fewer tourists in Bangkok and lower airfare from Heathrow and Gatwick.

🍂 Shoulder Season (Nov & Apr)

Prices are moderate and weather is pleasant. April includes Songkran (Thai New Year), making it a festive time to visit Bangkok.

☀️ Peak Season (Dec–Mar, Jul–Aug)

Expect higher prices during Christmas, New Year, and summer holidays. Book at least 3–4 months in advance to secure better fares.

💡 Traveler’s Tip: Compare both direct and one-stop options. Direct flights from London can be more expensive, but you may save by flying through hubs like Doha, Dubai, or Istanbul.

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Best Airlines for London → Bangkok Flights

London is one of the busiest international gateways to Bangkok, offering both direct and one-stop flights. Here are the most popular airlines for this route:

🇹🇭 Thai Airways

Operates non-stop flights from London Heathrow (LHR) to Bangkok Suvarnabhumi (BKK). A favorite for convenience and service.

🇶🇦 Qatar Airways

Connect via Doha (DOH). Known for world-class service and ranked among the best airlines globally.

🇦🇪 Emirates

Connect via Dubai (DXB). A top choice for travelers seeking luxury and comfort on the long-haul London → Bangkok route.

🇹🇷 Turkish Airlines

Connect via Istanbul (IST). Combines affordable fares with excellent onboard meals and service.

🇸🇬 Singapore Airlines

Connect via Singapore (SIN). Consistently rated as one of the best airlines in the world for comfort and reliability.

🇭🇰 Cathay Pacific

Connect via Hong Kong (HKG). Offers frequent departures and good pricing from London.

Cheapest Routes & Alternative Airports (London → Bangkok)

Most travelers depart from London Heathrow (LHR), but checking flights from other London airports or nearby cities can sometimes unlock cheaper fares. Here are the most common alternatives:

London Heathrow (LHR)

London’s busiest international airport with the widest choice of direct and one-stop flights to Bangkok.

London Gatwick (LGW)

Offers competitive fares, especially with carriers like Emirates, Qatar Airways, and Turkish Airlines.

London Stansted (STN)

Popular for budget-friendly connections through Middle Eastern or European hubs.

London Luton (LTN)

A smaller option with connecting flights to Bangkok via European hubs.

Manchester (MAN)

A good alternative to London, sometimes offering cheaper long-haul fares to Bangkok.

💡 Tip: Compare both Expedia and Kiwi.com before booking. Departing from a different London airport can save you £150-£250 on your ticket.

Why Book Your London → Bangkok Flight with Expedia & Kiwi.com?

With so many booking platforms out there, it’s important to know why Expedia and Kiwi.com stand out when it comes to finding the cheapest and most reliable flights from London to Bangkok. Here’s what makes each platform unique:

Expedia: Complete Travel Packages

Expedia makes it easy to bundle your hotel, tours, and flights into one package — often saving you up to 20%. Plus, their loyalty program gives you rewards on every booking.

Search Flights on Expedia →

Kiwi.com: Hidden Flight Routes

Kiwi specializes in “virtual interlining,” combining flights from airlines that don't normally work together. This can unlock savings of 25-40% on the London → Bangkok route. Kiwi also offers a Kiwi Guarantee, protecting you in case of missed connections.

Find Deals on Kiwi.com →

💡 Traveler's Tip: Many smart flyers check both Expedia and Kiwi before booking. Expedia is perfect for vacation bundles, while Kiwi is unbeatable for cheap hidden routes. Comparing both ensures you don't miss the best deal.

Expedia vs Kiwi.com: Which is Better for London → Bangkok Flights?

Feature Expedia Kiwi.com
Best For Vacation packages & loyalty rewards Hidden routes & cheapest hacks
Flight Options Major airlines, flexible dates Mix & match low-cost + major carriers
Average Savings Up to 20% on bundles 25-40% on hidden routes
Extra Benefits Hotel & car rental add-ons Kiwi Guarantee for missed connections

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Top Destinations in Thailand

Thailand offers more than just cheap flights — each destination has its own unique experiences. Compare flight prices with Kiwi.com's live widget, and explore our top travel spots below.

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Phi Phi Islands

are a top tourist destination in Thailand, known for their stunning natural beauty and activities like swimming, snorkeling, and boat tours.

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Frequently Asked Questions About Flights from London to Bangkok

The lowest fares are usually found during the low season (May–June, Sept–Oct). These months offer cheaper flights from Heathrow and Gatwick compared to peak winter and summer travel periods.

Heathrow (LHR) offers the widest selection, including non-stop flights with Thai Airways. Gatwick (LGW) often has competitive one-stop fares with airlines like Emirates and Qatar Airways. Stansted and Luton may have cheaper connecting flights but longer travel times.

Yes — Thai Airways operates non-stop flights from London Heathrow (LHR) to Bangkok Suvarnabhumi (BKK). Most other airlines operate one-stop connections via hubs like Doha, Dubai, or Istanbul.

A non-stop flight from London to Bangkok takes around 11–12 hours. One-stop flights typically range from 14–18 hours depending on layover duration and route.

Thai Airways (direct), Qatar Airways, Emirates, and Turkish Airlines are top-rated for service and reliability. Budget-conscious travelers often find good deals with Cathay Pacific or Singapore Airlines when booking in advance.

Expedia is excellent for flight + hotel bundles and loyalty rewards. Kiwi.com is strong for flexible multi-airline “hacker fares.” Many travelers compare both to find the lowest overall price.

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Written by Luxury Travel Paradise team