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Bangkok to Chiang Mai flights in December 2026 from $57 BKK, DMK → CNX

Suvarnabhumi Airport (BKK), Don Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)

For departures in December 2026, the cheapest return found recently is $101 with Thai AirAsia, 1 Dec – 1 Dec, found 2 days ago. The cheapest one-way found recently is $57 with Thai Lion Air, 27 Dec, found 3 days ago.

Return

In December 2026, the cheapest return fare on each of 24 departure dates is usually $111 to $124. Across all 69 departure dates we hold on this route, it is usually $84 to $115. Of the 6 months with enough return fares to compare, 4 are usually cheaper than December 2026.

Cheapest return found recently

$101

1 Dec – 1 Dec · Thai AirAsia

Don Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)

out nonstop, back nonstop

found 2 days ago

See prices for these datesCheck today's price

Cheapest we hold, of any age

$98

8 Dec – 7 Jan 2027 · Nok Air

Don Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)

out nonstop, back nonstop

found 6 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
8 Dec – 7 Jan 2027$98Nok Airout nonstop, back nonstopfound 6 days agoSee prices for these dates
1 Dec – 1 Dec$101Thai AirAsiaout nonstop, back nonstopfound 2 days agoSee prices for these dates
15 Dec – 17 Dec$108Thai AirAsiaout nonstop, back nonstopfound 6 days agoSee prices for these dates
20 Dec – 26 Dec$109Thai Lion Airout nonstop, back nonstopfound 2 days agoSee prices for these dates
2 Dec – 12 Dec$111Thai AirAsiaout nonstop, back nonstopfound 5 days agoSee prices for these dates

Every date we hold

24 departure dates

1 Dec – 1 Dec: $101, found 2 days ago2 Dec – 12 Dec: $111, found 5 days ago4 Dec – 5 Dec: $129, found 2 days ago5 Dec – 9 Dec: $122, found 6 days ago6 Dec – 6 Dec: $135, found 5 days ago8 Dec – 7 Jan 2027: $98, found 6 days ago9 Dec – 14 Dec: $111, found 3 days ago13 Dec – 15 Dec: $115, found 6 days ago14 Dec – 21 Dec: $114, found 7 days ago15 Dec – 17 Dec: $108, found 6 days ago16 Dec – 18 Dec: $111, found 7 days ago17 Dec – 21 Dec: $118, found 4 days ago18 Dec – 20 Dec: $119, found 2 days ago20 Dec – 26 Dec: $109, found 2 days ago21 Dec – 28 Dec: $111, found 2 days ago22 Dec – 26 Dec: $111, found 6 days ago24 Dec – 25 Dec: $115, found 2 days ago25 Dec – 31 Dec: $140, found 5 days ago26 Dec – 30 Dec: $149, found 4 days ago27 Dec – 30 Dec: $113, found 3 days ago28 Dec – 31 Dec: $122, found 7 days ago29 Dec – 4 Jan 2027: $122, found 2 days ago30 Dec – 1 Jan 2027: $138, found 6 days ago31 Dec – 4 Jan 2027: $134, found 2 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec – 1 Dec$101Thai AirAsiaDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
2 Dec – 12 Dec$111Thai AirAsiaDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 5 days agoSee prices for these dates
4 Dec – 5 Dec$129Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
5 Dec – 9 Dec$122Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 6 days agoSee prices for these dates
6 Dec – 6 Dec$135Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 5 days agoSee prices for these dates
8 Dec – 7 Jan 2027$98Nok AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 6 days agoSee prices for these dates
9 Dec – 14 Dec$111Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 3 days agoSee prices for these dates
13 Dec – 15 Dec$115Thai Vietjet AirSuvarnabhumi Airport (BKK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 6 days agoSee prices for these dates
14 Dec – 21 Dec$114Thai AirAsiaDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 7 days agoSee prices for these dates
15 Dec – 17 Dec$108Thai AirAsiaDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 6 days agoSee prices for these dates
16 Dec – 18 Dec$111Thai AirAsiaDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 7 days agoSee prices for these dates
17 Dec – 21 Dec$118Thai AirAsiaDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 4 days agoSee prices for these dates
18 Dec – 20 Dec$119Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
20 Dec – 26 Dec$109Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
21 Dec – 28 Dec$111Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
22 Dec – 26 Dec$111Thai AirAsiaDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 6 days agoSee prices for these dates
24 Dec – 25 Dec$115Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
25 Dec – 31 Dec$140THAI AirwaysSuvarnabhumi Airport (BKK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 5 days agoSee prices for these dates
26 Dec – 30 Dec$149Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 4 days agoSee prices for these dates
27 Dec – 30 Dec$113Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 3 days agoSee prices for these dates
28 Dec – 31 Dec$122Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 7 days agoSee prices for these dates
29 Dec – 4 Jan 2027$122Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
30 Dec – 1 Jan 2027$138THAI AirwaysSuvarnabhumi Airport (BKK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 6 days agoSee prices for these dates
31 Dec – 4 Jan 2027$134Thai Vietjet AirSuvarnabhumi Airport (BKK) → Chiang Mai International Airport (CNX)out nonstop, back nonstopfound 2 days agoSee prices for these dates

Which month looks cheapest?

February 2027 is the cheapest month — from $74.

November 2026From $9611 departure dates29 Nov – 3 Dec · found 2 days agoSee prices for these datesEvery date in November 2026
December 2026From $9824 departure dates8 Dec – 7 Jan 2027 · found 6 days agoSee prices for these dates
January 2027From $7618 departure dates20 Jan 2027 – 23 Jan 2027 · found 7 days agoSee prices for these datesEvery date in January 2027
February 2027From $74Cheapest seen9 departure dates14 Feb 2027 – 4 Mar 2027 · found 6 days agoSee prices for these datesEvery date in February 2027
March 2027From $753 departure dates6 Mar 2027 – 9 Mar 2027 · found 7 days agoSee prices for these dates
April 2027From $833 departure dates20 Apr 2027 – 23 Apr 2027 · found 2 days agoSee prices for these dates
July 2027From $831 departure date1 Jul 2027 – 30 Jul 2027 · found 6 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 5 departure dates is usually $57 to $66. Across all 27 departure dates we hold on this route, it is usually $39 to $54. Of the 5 months with enough one-way fares to compare, December 2026 is usually the most expensive.

Cheapest one-way found recently

$57

27 Dec · Thai Lion Air

Don Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)

nonstop

found 3 days ago

Open this tripCheck today's price

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

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
27 Dec$57Thai Lion Airnonstopfound 3 days agoOpen this trip
31 Dec$57Thai Lion Airnonstopfound 3 days agoOpen this trip
23 Dec$63Thai AirAsianonstopfound 6 days agoOpen this trip
30 Dec$66Thai Lion Airnonstopfound 3 days agoOpen this trip
26 Dec$73Thai Lion Airnonstopfound 7 days agoOpen this trip

Every date we hold

5 departure dates

23 Dec: $63, found 6 days ago26 Dec: $73, found 7 days ago27 Dec: $57, found 3 days ago30 Dec: $66, found 3 days ago31 Dec: $57, found 3 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
23 Dec$63Thai AirAsiaDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)nonstopfound 6 days agoOpen this trip
26 Dec$73Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)nonstopfound 7 days agoOpen this trip
27 Dec$57Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)nonstopfound 3 days agoOpen this trip
30 Dec$66Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)nonstopfound 3 days agoOpen this trip
31 Dec$57Thai Lion AirDon Mueang International Airport (DMK) → Chiang Mai International Airport (CNX)nonstopfound 3 days agoOpen this trip

Which month looks cheapest?

October 2027 is the cheapest month — from $33.

November 2026From $351 departure date30 Nov · found 6 days agoOpen this tripEvery date in November 2026
December 2026From $575 departure dates27 Dec · found 3 days agoOpen this trip
January 2027From $364 departure dates17 Jan 2027 · found 8 days agoSee prices for these datesEvery date in January 2027
February 2027From $386 departure dates23 Feb 2027 · found 2 days agoOpen this tripEvery date in February 2027
March 2027From $352 departure dates2 Mar 2027 · found 6 days agoOpen this trip
April 2027From $462 departure dates8 Apr 2027 · found 4 days agoOpen this trip
May 2027From $403 departure dates15 May 2027 · found 7 days agoOpen this trip
June 2027From $403 departure dates11 Jun 2027 · found 5 days agoOpen this trip
October 2027From $33Cheapest seen1 departure date20 Oct 2027 · found 7 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