Cheap flights from Bangkok to Vientiane from $147

The cheapest month to fly to Vientiane from Bangkok is in August. Flight prices, which tend to average around $233, are often lower during this time because this is during the off-season. If you are unable to visit Vientiane during the month of August, then departing from Bangkok during the month September is also very affordable. Most momondo users find prices during this month for around $235.

On average, the least expensive day to fly to Vientiane from Bangkok is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $237. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Bangkok because it is more convenient for both business and leisure travellers. As a result, prices tend to be around $358.

According to our data, the cheapest time of day to fly to Vientiane is in the morning. momondo users have found flights departing from Bangkok to Vientiane in the morning for as low as $231. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Vientiane are more costly in the afternoon, with an average ticket price of $358. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Bangkok Don Mueang Intl to Vientiane Wattay for the best Bangkok - Vientiane Wattay flight prices

You are more likely to see cheaper flights to Vientiane from Bangkok when booking weeks ahead of your departure date. In general, you can expect to find flights to Vientiane for around $250 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Vientiane from Bangkok for as low as $231 on momondo.

There are 3 cabin classes available to choose from on Bangkok to Vientiane Wattay flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Lao Airlines and Thai Airways are the most popular carriers operating from Bangkok to Vientiane Wattay

Lao Airlines, Thai AirAsia and Thai Airways are the top three most popular airlines that fly to Vientiane from Bangkok according to our data. Lao Airlines is the first choice among our users, with 45% of people opting to fly with this airline when travelling to Vientiane. Keep in mind that there are 3 different airlines that fly to Vientiane on a routine basis, so you have a few additional options to choose from.

Historically, on average around 24% of flights between Bangkok and Vientiane have experienced a delay on any given week. The average delay length over the past 12 months has been 77 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Sunday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, AirAsia have had the fewest delays on this route over the last 12 months, with about 18% of their flights experiencing any sort of delay.

As of March 2026, there are 9 flights per day flying from Bangkok to Vientiane. The most common time of day flights depart is 18:00, with 51% of flights taking off in the evening.

As of March 2026, 66 flights take off from Bangkok and land in Vientiane each week. The most common flight departure day for this route is Tue, with 15% of weekly flights taking off on this day.