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Flights between Bangkok (BKK) and Ulaanbaatar (ULN)

Suvarnabhumi Airport, Thailand ↔ Buyant-Ukhaa International Airport, Mongolia

A direct route between Bangkok and Ulaanbaatar appears in the OpenFlights route network.

Confirming who flies BKK–ULN

We're verifying which airlines currently operate BKK–ULN. Current operators will appear here as our data refreshes.

Distance
3,839 km
2,385 miles
Est. flight time
5h 18m
great-circle estimate
Time difference
~1h
varies with DST
View this route on the live map →Search fares on Skyscanner ↗

Climate

Typical monthly temperatures in Thailand

Jan
32°
37/27
10mm
Feb
33°
38/28
20mm
Mar
34°
39/29
30mm
Apr
35°
40/30
60mm
May
34°
39/29
180mm
Jun
33°
38/28
200mm
Jul
32°
37/27
200mm
Aug
32°
37/27
250mm
Sep
32°
37/27
300mm
Oct
31°
36/26
200mm
Nov
31°
36/26
50mm
Dec
31°
36/26
10mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Typical monthly temperatures in Mongolia

Jan
-15°
-10/-20
1mm
Feb
-10°
-5/-15
2mm
Mar
-1°
4/-6
3mm
Apr
9°
14/4
6mm
May
17°
22/12
11mm
Jun
22°
27/17
35mm
Jul
23°
28/18
65mm
Aug
21°
26/16
60mm
Sep
14°
19/9
25mm
Oct
5°
10/0
6mm
Nov
-7°
-2/-12
3mm
Dec
-14°
-9/-19
2mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Travel advisories

Thailand: Caution — some areas (UK FCDO) ↗Mongolia: Normal precautions (UK FCDO) ↗

Common questions

How far is Bangkok from Ulaanbaatar?

Bangkok (BKK) and Ulaanbaatar (ULN) are around 3,839 km (2,385 miles) apart — an estimated 5h 18m by air. Distances and flight times are great-circle estimates.

What is the time difference between Bangkok and Ulaanbaatar?

Time difference ~ 1 hour (varies with daylight-saving).

When is it warmest in Mongolia?

Across Mongolia, the warmest month on average is July, with mean temperatures around 23°C. These are country-level monthly climate normals, not airport-specific.

Are there travel advisories for Thailand and Mongolia?

The UK FCDO currently rates Thailand as Caution — some areas; The UK FCDO rates Mongolia as Normal precautions. Check the official sources before you travel.

Distances and flight times are great-circle estimates, not booked block times.