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London to Bangkok in December 2026 LCY, LGW, LHR, LTN, SEN, STN → BKK, DMK

London City Airport (LCY), London Gatwick Airport (LGW), London Heathrow Airport (LHR), London Luton Airport (LTN), London Southend Airport (SEN), Stansted Airport (STN) → Suvarnabhumi Airport (BKK), Don Mueang International Airport (DMK)

For departures in December 2026, the cheapest return found recently is $482 with Air China, 4 Dec – 21 Dec, found yesterday.

Return

In December 2026, the cheapest return fare on each of 18 departure dates is usually $701 to $1,222. Across all 61 departure dates we hold on this route, it is usually $560 to $945. Of the 6 months with enough return fares to compare, 4 are usually cheaper than December 2026.

Cheapest return found recently

$482

4 Dec – 21 Dec · Air China

London Gatwick Airport (LGW) → Suvarnabhumi Airport (BKK)

out 1 stop, back 1 stop

found yesterday

See prices for these datesCheck today's price

It is also the cheapest return we hold, of any age.

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
4 Dec – 21 Dec$482Air Chinaout 1 stop, back 1 stopfound yesterdaySee prices for these dates
8 Dec – 19 Jan 2027$520Air Chinaout 1 stop, back 1 stopfound yesterdaySee prices for these dates
2 Dec – 7 Dec$578China Southern Airlinesout 1 stop, back 1 stopfound 5 days agoSee prices for these dates
30 Dec – 13 Jan 2027$650Shenzhen Airlinesout 1 stop, back 1 stopfound 2 days agoSee prices for these dates
31 Dec – 12 Jan 2027$698Shenzhen Airlinesout 1 stop, back 1 stopfound 3 days agoSee prices for these dates

Every date we hold

18 departure dates

2 Dec – 7 Dec: $578, found 5 days ago4 Dec – 21 Dec: $482, found yesterday6 Dec – 21 Dec: $1,272, found yesterday8 Dec – 19 Jan 2027: $520, found yesterday9 Dec – 20 Jan 2027: $768, found yesterday12 Dec – 3 Jan 2027: $2,503, found 6 days ago13 Dec – 27 Dec: $708, found 5 days ago15 Dec – 5 Jan 2027: $945, found 5 days ago17 Dec – 4 Jan 2027: $2,254, found 6 days ago19 Dec – 17 Jan 2027: $985, found 5 days ago21 Dec – 1 Feb 2027: $929, found yesterday22 Dec – 2 Jan 2027: $2,020, found 5 days ago23 Dec – 5 Jan 2027: $1,494, found 4 days ago24 Dec – 1 Jan 2027: $1,072, found 6 days ago26 Dec – 13 Jan 2027: $969, found 2 days ago28 Dec – 20 Jan 2027: $730, found 5 days ago30 Dec – 13 Jan 2027: $650, found 2 days ago31 Dec – 12 Jan 2027: $698, found 3 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
2 Dec – 7 Dec$578China Southern AirlinesLondon Heathrow Airport (LHR) → Suvarnabhumi Airport (BKK)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
4 Dec – 21 Dec$482Air ChinaLondon Gatwick Airport (LGW) → Suvarnabhumi Airport (BKK)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
6 Dec – 21 Dec$1,272KLMLondon City Airport (LCY) → Suvarnabhumi Airport (BKK)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
8 Dec – 19 Jan 2027$520Air ChinaLondon Gatwick Airport (LGW) → Suvarnabhumi Airport (BKK)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
9 Dec – 20 Jan 2027$768EurowingsLondon Heathrow Airport (LHR) → Don Mueang International Airport (DMK)out 3 stops, back 1 stopfound yesterdaySee prices for these dates
12 Dec – 3 Jan 2027$2,503Helvetic AirwaysLondon City Airport (LCY) → Suvarnabhumi Airport (BKK)out 1 stop, back 2 stopsfound 6 days agoSee prices for these dates
13 Dec – 27 Dec$708Wizz Air UKLondon Gatwick Airport (LGW) → Don Mueang International Airport (DMK)out 3 stops, back nonstopfound 5 days agoSee prices for these dates
15 Dec – 5 Jan 2027$945easyJetLondon Gatwick Airport (LGW) → Suvarnabhumi Airport (BKK)out 2 stops, back 2 stopsfound 5 days agoSee prices for these dates
17 Dec – 4 Jan 2027$2,254SWISSLondon City Airport (LCY) → Suvarnabhumi Airport (BKK)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates
19 Dec – 17 Jan 2027$985VuelingLondon Heathrow Airport (LHR) → Suvarnabhumi Airport (BKK)out 3 stops, back 1 stopfound 5 days agoSee prices for these dates
21 Dec – 1 Feb 2027$929easyJetStansted Airport (STN) → Suvarnabhumi Airport (BKK)out 2 stops, back 2 stopsfound yesterdaySee prices for these dates
22 Dec – 2 Jan 2027$2,020Helvetic AirwaysLondon City Airport (LCY) → Suvarnabhumi Airport (BKK)out 2 stops, back 2 stopsfound 5 days agoSee prices for these dates
23 Dec – 5 Jan 2027$1,494Helvetic AirwaysLondon City Airport (LCY) → Suvarnabhumi Airport (BKK)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
24 Dec – 1 Jan 2027$1,072China EasternLondon Heathrow Airport (LHR) → Suvarnabhumi Airport (BKK)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates
26 Dec – 13 Jan 2027$969China EasternLondon Heathrow Airport (LHR) → Suvarnabhumi Airport (BKK)out 1 stop, back 1 stopfound 2 days agoSee prices for these dates
28 Dec – 20 Jan 2027$730Shenzhen AirlinesLondon Heathrow Airport (LHR) → Suvarnabhumi Airport (BKK)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
30 Dec – 13 Jan 2027$650Shenzhen AirlinesLondon Heathrow Airport (LHR) → Suvarnabhumi Airport (BKK)out 1 stop, back 1 stopfound 2 days agoSee prices for these dates
31 Dec – 12 Jan 2027$698Shenzhen AirlinesLondon Heathrow Airport (LHR) → Suvarnabhumi Airport (BKK)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $477.

October 2026From $5662 departure dates31 Oct – 27 Nov · found 4 days agoSee prices for these dates
November 2026From $477Cheapest seen11 departure dates18 Nov – 26 Nov · found 5 days agoSee prices for these datesEvery date in November 2026
December 2026From $48218 departure dates4 Dec – 21 Dec · found yesterdaySee prices for these dates
January 2027From $47711 departure dates27 Jan 2027 – 26 Feb 2027 · found 6 days agoSee prices for these datesEvery date in January 2027
February 2027From $5777 departure dates13 Feb 2027 – 15 Mar 2027 · found 5 days agoSee prices for these datesEvery date in February 2027
March 2027From $5163 departure dates1 Mar 2027 – 31 Mar 2027 · found 6 days agoSee prices for these dates
June 2027From $6642 departure dates19 Jun 2027 – 30 Jun 2027 · found 2 days agoSee prices for these dates
July 2027From $1,0566 departure dates21 Jul 2027 – 11 Aug 2027 · found yesterdaySee prices for these dates
September 2027From $6521 departure date15 Sept 2027 – 16 Oct 2027 · found 2 days agoSee prices for these dates

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work