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Heihe to Bangkok in December 2026 HEK → BKK, DMK

Heihe Airport (HEK) → Suvarnabhumi Airport (BKK), Don Mueang International Airport (DMK)

For departures in December 2026, the cheapest return found recently is $493 with Chengdu Airlines, 1 Dec – 14 Dec, found today. The cheapest one-way found recently is $255 with China Southern Airlines, 3 Dec, found today.

Return

In December 2026, the cheapest return fare on each of 9 departure dates is usually $596 to $628. Across all 30 departure dates we hold on this route, it is usually $515 to $687. Of the 4 months with enough return fares to compare, 1 is usually cheaper than December 2026.

Cheapest return found recently

$493

1 Dec – 14 Dec · Chengdu Airlines

Heihe Airport (HEK) → Suvarnabhumi Airport (BKK)

out 2 stops, back 1 stop

found today

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
1 Dec – 14 Dec$493Chengdu Airlinesout 2 stops, back 1 stopfound todaySee prices for these dates
26 Dec – 7 Jan 2027$594Chengdu Airlinesout 2 stops, back 2 stopsfound 3 days agoSee prices for these dates
22 Dec – 10 Jan 2027$596China Easternout 2 stops, back 2 stopsfound 5 days agoSee prices for these dates
27 Dec – 14 Jan 2027$616Chengdu Airlinesout 2 stops, back 2 stopsfound 4 days agoSee prices for these dates
28 Dec – 14 Jan 2027$616Chengdu Airlinesout 2 stops, back 2 stopsfound 4 days agoSee prices for these dates

Every date we hold

9 departure dates

1 Dec – 14 Dec: $493, found today18 Dec – 8 Jan 2027: $628, found 4 days ago19 Dec – 8 Jan 2027: $627, found 6 days ago21 Dec – 31 Dec: $666, found 2 days ago22 Dec – 10 Jan 2027: $596, found 5 days ago26 Dec – 7 Jan 2027: $594, found 3 days ago27 Dec – 14 Jan 2027: $616, found 4 days ago28 Dec – 14 Jan 2027: $616, found 4 days ago29 Dec – 14 Jan 2027: $688, found 4 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec – 14 Dec$493Chengdu AirlinesHeihe Airport (HEK) → Suvarnabhumi Airport (BKK)out 2 stops, back 1 stopfound todaySee prices for these dates
18 Dec – 8 Jan 2027$628China EasternHeihe Airport (HEK) → Suvarnabhumi Airport (BKK)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
19 Dec – 8 Jan 2027$627China EasternHeihe Airport (HEK) → Suvarnabhumi Airport (BKK)out 2 stops, back 2 stopsfound 6 days agoSee prices for these dates
21 Dec – 31 Dec$666China EasternHeihe Airport (HEK) → Suvarnabhumi Airport (BKK)out 2 stops, back 2 stopsfound 2 days agoSee prices for these dates
22 Dec – 10 Jan 2027$596China EasternHeihe Airport (HEK) → Suvarnabhumi Airport (BKK)out 2 stops, back 2 stopsfound 5 days agoSee prices for these dates
26 Dec – 7 Jan 2027$594Chengdu AirlinesHeihe Airport (HEK) → Suvarnabhumi Airport (BKK)out 2 stops, back 2 stopsfound 3 days agoSee prices for these dates
27 Dec – 14 Jan 2027$616Chengdu AirlinesHeihe Airport (HEK) → Suvarnabhumi Airport (BKK)out 2 stops, back 2 stopsfound 4 days agoSee prices for these dates
28 Dec – 14 Jan 2027$616Chengdu AirlinesHeihe Airport (HEK) → Suvarnabhumi Airport (BKK)out 2 stops, back 2 stopsfound 4 days agoSee prices for these dates
29 Dec – 14 Jan 2027$688Chengdu AirlinesHeihe Airport (HEK) → Suvarnabhumi Airport (BKK)out 2 stops, back 2 stopsfound 4 days agoSee prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $441.

October 2026From $4722 departure dates28 Oct – 11 Nov · found yesterdaySee prices for these dates
November 2026From $441Cheapest seen6 departure dates22 Nov – 29 Nov · found 3 days agoSee prices for these dates
December 2026From $4939 departure dates1 Dec – 14 Dec · found todaySee prices for these dates
January 2027From $6277 departure dates5 Jan 2027 – 13 Jan 2027 · found 4 days agoSee prices for these datesEvery date in January 2027
February 2027From $5623 departure dates24 Feb 2027 – 9 Mar 2027 · found 2 days agoSee prices for these dates
March 2027From $5482 departure dates1 Mar 2027 – 23 Mar 2027 · found yesterdaySee prices for these dates
April 2027From $8421 departure date3 Apr 2027 – 18 Apr 2027 · found 2 days agoSee prices for these dates

One-way

We hold one-way fares on only 2 departure dates in December 2026, too few to say what one usually costs.

Cheapest one-way found recently

$255

3 Dec · China Southern Airlines

Heihe Airport (HEK) → Suvarnabhumi Airport (BKK)

2 stops

found today

Open this tripCheck today's price

It is also the cheapest one-way we hold, of any age.

FareTell may earn a commission when you book through a partner.

The cheapest dates in December 2026

DatesFromAirlineStopsFound
3 Dec$255China Southern Airlines2 stopsfound todayOpen this trip
21 Dec$265Air China2 stopsfound 7 days agoOpen this trip

Every date we hold

2 departure dates

3 Dec: $255, found today21 Dec: $265, found 7 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
3 Dec$255China Southern AirlinesHeihe Airport (HEK) → Suvarnabhumi Airport (BKK)2 stopsfound todayOpen this trip
21 Dec$265Air ChinaHeihe Airport (HEK) → Suvarnabhumi Airport (BKK)2 stopsfound 7 days agoOpen this trip

Which month looks cheapest?

November 2026 is the cheapest month — from $201.

November 2026From $201Cheapest seen2 departure dates9 Nov · found 6 days agoOpen this trip
December 2026From $2552 departure dates3 Dec · found todayOpen this trip
January 2027From $2871 departure date11 Jan 2027 · found 8 hours agoOpen this tripEvery date in January 2027
February 2027From $2971 departure date19 Feb 2027 · found 2 days agoOpen this trip
March 2027From $2733 departure dates18 Mar 2027 · found 2 days agoOpen this trip

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