How the cheapest fare moved
Aug 14: €200 €200
Aug 8
Aug 14
low €190 · high €221
Departure-day prices · September 2025 Siem Reap → Vientiane
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Return-day prices · September 2025 Vientiane → Siem Reap
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Best time to visit Vientiane — climate Jan: ~26°C daytime, 0 rainy days
26°
Jan Feb: ~29°C daytime, 2 rainy days
29°
Feb Mar: ~32°C daytime, 1 rainy days
32°
Mar Apr: ~33°C daytime, 11 rainy days
33°
Apr May: ~33°C daytime, 25 rainy days
33°
May Jun: ~32°C daytime, 30 rainy days
32°
Jun Jul: ~31°C daytime, 26 rainy days
31°
Jul Aug: ~31°C daytime, 25 rainy days
31°
Aug Sep: ~31°C daytime, 29 rainy days
31°
Sep Oct: ~31°C daytime, 18 rainy days
31°
Oct Nov: ~29°C daytime, 8 rainy days
29°
Nov Dec: ~29°C daytime, 1 rainy days
29°
Dec Best value: Feb — fares from €179 and ~29°C daytime.
Flights from Siem Reap to Vientiane start around €179 (typically 1 stop). Range seen recently: €179–221, based on 9 fares found by travellers.
Fly (from €179)
2h 20m duration
€179–221 recent fares
Book
Cheapest cached fares Siem Reap → Vientiane; typically 1 stop (e.g. FD). · Based on 9 fares found by travellers in the last 48h
Cheapest round trips to Vientiane Fares found by travellers in the last 48 hours — refreshed daily.
Jun 1 – Jun 4
Bangkok Airways · 1 stop · 2h 50m
€316
Book
Jan 1 – Jan 4
THAI Airways · 1 stop · 2h 15m
€361
Book
Mar 1 – Mar 4
Thai AirAsia · 1 stop · 2h 20m
€361
Book
Weather in Vientiane
Sat
⛈️
31°
25°
💧96%
Sun
⛈️
31°
25°
💧88%
Mon
⛈️
32°
25°
💧82%
Tue
⛈️
32°
25°
💧68%
Wed
⛈️
27°
25°
💧96%
Thu
⛈️
27°
25°
💧98%
Fri
⛈️
27°
25°
💧98%
In Sep, Vientiane typically sees ~31°C daytime highs and 28 rainy days.
Where to stay in Vientiane 3★+ hotels from €15/night (36 hotels sampled, ~3 weeks out).
Mali Namphu Hotel
hotel · Vientiane
from €15/night ★ 3
Phonepaseuth Guesthouse
hotel · Vientiane
from €19/night ★ 3
Vientiane Golden Sun Hotel & Spa
hotel · Vientiane
from €22/night ★ 3
Good to know Time difference Same time zone
Time in the air 2h 15m
Things to do in Vientiane Top-rated tours and tickets from €11 — book ahead for the popular ones.
Tours and tickets provided by Viator (a Tripadvisor company). Some links earn Stayonomy a commission.
About Vientiane
Vientiane (Lao: ວຽງຈັນ, Vieng Chan) is the capital of Laos, with stunning temples, vibrant night markets, beautiful French-Indochinese architecture, lively street food stalls, and traditional craft markets.
Read the full Vientiane guide
Guide content from Wikivoyage contributors (CC BY-SA).
Popular from Siem Reap Cheapest destinations travellers searched recently — refreshed daily.
Flight prices are real fares travellers found in the last 48 hours, refreshed daily — the booking site confirms the final price. Train, bus and ferry fares are shown on the operators' booking sites. Weather data by Open-Meteo ; exchange rates: ECB reference. Data updated 2026-08-15. Some links earn Stayonomy a commission at no cost to you.
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