Siem Reap to Vientiane

1 ways to travelfastest 2h 15mfly from €185
Photo: Will Sun / Unsplash

When is it cheapest to fly?

Sep: from €204 — show this month's calendar €204 SepOct: from €185 — show this month's calendar €185 OctDec: from €195 — show this month's calendar €195 DecJan: from €186 — show this month's calendar €186 JanApr: from €201 — show this month's calendar €201 Apr

How the cheapest fare moved

Sep 23: €185 €185 Sep 20 Sep 23 low €185 · high €340

Departure-day prices · September 2026 Siem Reap → Vientiane

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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.

Return-day prices · September 2026 Vientiane → Siem Reap

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Best time to visit Vientiane — climate

Jan: ~26°C daytime, 0 rainy days 26° JanFeb: ~29°C daytime, 2 rainy days 29° FebMar: ~32°C daytime, 1 rainy days 32° MarApr: ~33°C daytime, 11 rainy days 33° AprMay: ~33°C daytime, 25 rainy days 33° MayJun: ~32°C daytime, 30 rainy days 32° JunJul: ~31°C daytime, 26 rainy days 31° JulAug: ~31°C daytime, 25 rainy days 31° AugSep: ~31°C daytime, 29 rainy days 31° SepOct: ~31°C daytime, 18 rainy days 31° OctNov: ~29°C daytime, 8 rainy days 29° NovDec: ~29°C daytime, 1 rainy days 29° Dec

Best value: Oct — fares from €185 and ~31°C daytime.

Flights from Siem Reap to Vientiane start around €185 (typically 2 stops). Range seen recently: €185–340, based on 19 fares found by travellers.

Fly (from €185)
2h 15mduration
€185–340recent fares
Book
Cheapest cached fares Siem Reap → Vientiane; typically 2 stops (e.g. VJ). · Based on 19 fares found by travellers in the last 48h

Cheapest round trips to Vientiane

Fares found by travellers in the last 48 hours — refreshed daily.

Dec 25 – Jan 5 THAI Airways · 1 stop · 2h 15m €377 Book
Dec 27 – Jan 6 THAI Airways · 1 stop · 2h 15m €377 Book
Dec 25 – Jan 8 THAI Airways · 1 stop · 2h 15m €381 Book
Dec 29 – Jan 7 Lao Airlines · 1 stop · 4h 30m €394 Book

Weather in Vientiane

Fri ⛈️ 30° 24° 💧94%
Sat ⛈️ 30° 24° 💧100%
Sun ⛈️ 28° 24° 💧98%
Mon ⛈️ 28° 24° 💧98%
Tue 🌦️ 29° 24° 💧82%
Wed 🌦️ 32° 24° 💧86%
Thu 🌦️ 33° 26° 💧60%

In Sep, Vientiane typically sees ~31°C daytime highs and 29 rainy days.

Where to stay in Vientiane

3★+ hotels from €19/night (36 hotels sampled, ~3 weeks out).

Phonepaseuth Guesthouse hotel · Vientiane
from €19/night★ 3
See availability
Viryla Boutique Hotel hotel · Vientiane
from €19/night★ 3
See availability
Mali Namphu Hotel hotel · Vientiane
from €21/night★ 3
See availability

Good to know

Time differenceSame time zone
Time in the air2h 15m

Things to do in Vientiane

Top-rated tours and tickets from €11 — book ahead for the popular ones.

from €150
Half-Day Vientiane City Bike Tour | Laos★ 5.0 (5)
from €63
Vientiane Private Lao Cooking Class with Market Tour and Lunch★ 5.0 (4)
from €27
Get Your Laos–China Train Ticket Fast – No Waiting, No Worries★ 5.0 (3)
from €11
Laos Railway Tickets Online: Skip Long Queues, Avoid Missing★ 5.0 (2)
from €62
The Soul of Vientiane: History and Culture (Half Day Trip)★ 5.0 (1)
from €100
Vientiane Cuisine and Culture with Tuk Tuk Tour★ 5.0 (1)

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).

Round out the trip

eSIM for VientianeData from the moment you land — no roaming bills. Rent a car in VientianeCompare local and international rental desks. Airport transferFixed-price pickup waiting at arrivals. Travel insuranceMedical + luggage cover from a few €/day.

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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 2026-09-25. Some links earn Stayonomy a commission at no cost to you.