Cheap flights from Bangkok to Vientiane from $145

The cheapest month to fly to Vientiane from Bangkok is in December. Flight prices, which tend to average around $144, are often lower during this time because this is during the off-season. If you are unable to visit Vientiane during the month of December, then departing from Bangkok during the month October is also very affordable. Most momondo users find prices during this month for around $144.

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 $234. 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 $351.

According to our data, the cheapest time of day to fly to Vientiane is at midday. momondo users have found flights departing from Bangkok to Vientiane at midday for as low as $232. 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 $362. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Bangkok Suvarnabhumi 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 $251 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 $227 on momondo.

Vietnam Airlines is the most popular carrier 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 43% 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 76 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.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Wednesday 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 19% of their flights experiencing any sort of delay.

As of April 2026, there are 7 flights per day flying from Bangkok to Vientiane. The most common time of day flights depart is 18:00, with 50% of flights taking off in the evening.

As of April 2026, 50 flights take off from Bangkok and land in Vientiane each week. The most common flight departure day for this route is Tue, with 16% of weekly flights taking off on this day.