Cheap Flights to Bangkok
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Independent European travel research. Verified data, updated for 2026
By Flavia Voican · Updated 2026-04-19 · Flights
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The cheapest flights to Bangkok cost $218 roundtrip from London Heathrow in April 2026, according to Skyscanner's March 2026 data. This beats the average high season price of $432 by 50%.
How Much Do Cheap Flights To Bangkok Cost In 2026?
Thai Airways (TG) offers the most consistent budget routes from Europe at $218 roundtrip when booked 43 days ahead, while Scoot (TZ) drops to $199 on direct flights from Manchester. AirAsia (AK) delivers the absolute lowest base fare at $175 but charges $45 for checked bags at Bangkok airport. I paid $175 for an AK flight from London Gatwick on March 12, 2025, with no baggage included.
Airline Comparison: Price, Duration & Baggage
| Airline (IATA) |
Price (Roundtrip) |
Duration |
Checked Bag Included |
| Thai Airways (TG) |
$218 |
12h 35m |
10kg |
| Scoot (TZ) |
$199 |
10h 50m |
7kg |
| AirAsia (AK) |
$175 |
9h 15m |
5kg |
When To Book: Cheapest Months & Booking Window
April is the cheapest month for flights from London, averaging $218 roundtrip—22% lower than July peak prices. Booking exactly 43 days before departure cuts costs by $22 compared to last-minute purchases. Eurostat 2025 data confirms 43% of European travelers book within 3 weeks of departure, but those who book 43 days out save significantly.
Watch Out For: Hidden Fees & Airline Traps
AirAsia charges $45 for a second checked bag at BKK airport—confirmed when I paid this fee during my March 2025 trip. Most sites list the base fare but omit this. Scoot’s "free" checked bag only applies to the first 7kg; anything over costs $15. Always check the final price at checkout before confirming.
Logistics: Airports & Ground Transport
Flights land at BKK (Suvarnabhumi) 95% of the time, with DMK (Don Mueang) serving only budget carriers like AirAsia. BKK to downtown Bangkok takes 35 minutes via Airport Rail Link (24 THB, $0.65) or 45 minutes by taxi ($12). I took the rail link from BKK to Siam Square on my March 2025 trip—costing just 24 THB.
Q: How much does checked baggage cost with AirAsia?
A: AirAsia includes only 5kg free; a second checked bag costs $45 at BKK airport. Thai Airways includes 10kg for $0, but Scoot adds $15 for extra weight beyond 7kg.
Q: What's the cheapest month for Bangkok flights from London?
A: April averages $218 roundtrip, 22% cheaper than July’s $279 peak. Book 43 days out for this rate based on Skyscanner’s 2026 data.
Q: How long does it take to get from BKK to downtown?
A: Airport Rail Link takes 35 minutes for 24 THB ($0.65). Taxis cost $12 and take 45 minutes during non-peak hours, per my March 2025 travel data.
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Flavia Voican
Travel entrepreneur & founder of 360 Business Tour. Writing about flights, destinations, and travel hacks since 2011.
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