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Cheap Flights from St Louis (STL) to Bangkok (BKK)

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      Travellers and cabin class, 1 Adult, Economy

      Compare St Louis to Bangkok Suvarnabhumi flight deals

      Find the cheapest month or even day of the year to fly to Bangkok Suvarnabhumi

      Book the best Bangkok Suvarnabhumi fare with no extra fees

      Flight deals from St Louis to Bangkok Suvarnabhumi

      Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Bangkok Suvarnabhumi Airport? If you want to travel next month, return fares start from $1,543. Find the lowest prices on one-way and return tickets right here.
      Bangkok.$1,544 per passenger.Departing Sat, 24 Oct, returning Sat, 31 Oct.Return flight with Frontier Airlines and Sichuan Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Sat, 24 Oct, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Sichuan Airlines, departs from Bangkok Suvarnabhumi on Sat, 31 Oct, arriving in St Louis.Price includes taxes and charges.From $1,544, select.
      Bangkok.$1,557 per passenger.Departing Sun, 18 Oct, returning Sun, 1 Nov.Return flight with Southwest Airlines and China Airlines.Outbound indirect flight with Southwest Airlines, departs from St Louis on Sun, 18 Oct, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Sun, 1 Nov, arriving in St Louis.Price includes taxes and charges.From $1,557, select.
      Bangkok.$1,558 per passenger.Departing Mon, 28 Sep, returning Tue, 13 Oct.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from St Louis on Mon, 28 Sep, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Qatar Airways, departs from Bangkok Suvarnabhumi on Tue, 13 Oct, arriving in St Louis.Price includes taxes and charges.From $1,558, select.
      Bangkok.$1,559 per passenger.Departing Fri, 9 Apr, returning Sun, 25 Apr.Return flight with Southwest Airlines and China Airlines.Outbound indirect flight with Southwest Airlines, departs from St Louis on Fri, 9 Apr, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Sun, 25 Apr, arriving in St Louis.Price includes taxes and charges.From $1,559, select.
      Bangkok.$1,561 per passenger.Departing Sun, 17 Jan, returning Tue, 26 Jan.Return flight with Southwest Airlines and China Airlines.Outbound indirect flight with Southwest Airlines, departs from St Louis on Sun, 17 Jan, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Tue, 26 Jan, arriving in St Louis.Price includes taxes and charges.From $1,561, select.
      Bangkok.$1,561 per passenger.Departing Wed, 23 Sep, returning Wed, 30 Sep.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from St Louis on Wed, 23 Sep, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Qatar Airways, departs from Bangkok Suvarnabhumi on Wed, 30 Sep, arriving in St Louis.Price includes taxes and charges.From $1,561, select.
      Bangkok.$1,561 per passenger.Departing Wed, 20 Jan, returning Wed, 24 Feb.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from St Louis on Wed, 20 Jan, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Qatar Airways, departs from Bangkok Suvarnabhumi on Wed, 24 Feb, arriving in St Louis.Price includes taxes and charges.From $1,561, select.
      Bangkok.$1,562 per passenger.Departing Wed, 3 Mar, returning Mon, 15 Mar.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from St Louis on Wed, 3 Mar, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Qatar Airways, departs from Bangkok Suvarnabhumi on Mon, 15 Mar, arriving in St Louis.Price includes taxes and charges.From $1,562, select.
      Bangkok.$1,565 per passenger.Departing Tue, 9 Feb, returning Wed, 24 Feb.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from St Louis on Tue, 9 Feb, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Qatar Airways, departs from Bangkok Suvarnabhumi on Wed, 24 Feb, arriving in St Louis.Price includes taxes and charges.From $1,565, select.
      Bangkok.$1,605 per passenger.Departing Tue, 1 Dec, returning Tue, 8 Dec.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from St Louis on Tue, 1 Dec, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Korean Air, departs from Bangkok Suvarnabhumi on Tue, 8 Dec, arriving in St Louis.Price includes taxes and charges.From $1,605, select.
      Bangkok.$1,610 per passenger.Departing Tue, 10 Nov, returning Tue, 24 Nov.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from St Louis on Tue, 10 Nov, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Korean Air, departs from Bangkok Suvarnabhumi on Tue, 24 Nov, arriving in St Louis.Price includes taxes and charges.From $1,610, select.
      Bangkok.$1,616 per passenger.Departing Thu, 1 Apr, returning Sat, 1 May.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from St Louis on Thu, 1 Apr, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Qatar Airways, departs from Bangkok Suvarnabhumi on Sat, 1 May, arriving in St Louis.Price includes taxes and charges.From $1,616, select.
      Bangkok.$1,644 per passenger.Departing Sat, 28 Nov, returning Mon, 14 Dec.Return flight with Korean Air.Outbound indirect flight with Korean Air, departs from St Louis on Sat, 28 Nov, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Korean Air, departs from Bangkok Suvarnabhumi on Mon, 14 Dec, arriving in St Louis.Price includes taxes and charges.From $1,644, select.
      Bangkok.$1,661 per passenger.Departing Wed, 30 Sep, returning Wed, 2 Dec.Return flight with Southwest Airlines and China Airlines.Outbound indirect flight with Southwest Airlines, departs from St Louis on Wed, 30 Sep, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Wed, 2 Dec, arriving in St Louis.Price includes taxes and charges.From $1,661, select.
      Bangkok.$1,961 per passenger.Departing Fri, 1 Jan, returning Sun, 7 Mar.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from St Louis on Fri, 1 Jan, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Qatar Airways, departs from Bangkok Suvarnabhumi on Sun, 7 Mar, arriving in St Louis.Price includes taxes and charges.From $1,961, select.
      Bangkok.$1,985 per passenger.Departing Tue, 1 Dec, returning Mon, 1 Mar.Return flight with Japan Airlines.Outbound indirect flight with Japan Airlines, departs from St Louis on Tue, 1 Dec, arriving in Bangkok Suvarnabhumi.Inbound indirect flight with Japan Airlines, departs from Bangkok Suvarnabhumi on Mon, 1 Mar, arriving in St Louis.Price includes taxes and charges.From $1,985, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from St Louis to Bangkok Suvarnabhumi found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from St Louis to Bangkok Suvarnabhumi

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Bangkok Suvarnabhumi flights are currently cheapest in October.
      Sep
      from $1,561
      Oct
      from $1,544
      Nov
      from $1,610
      Dec
      from $1,605
      Jan
      from $1,561
      Feb
      from $1,565
      Mar
      from $1,562
      Apr
      from $1,559
      May
      Find prices
      Jun
      Find prices
      Jul
      Find prices
      Aug
      from $3,587

      St Louis to Bangkok Suvarnabhumi: Alternative routes

      Compare routes from St Louis to Bangkok below. You may find an airport to fly into that's cheaper, faster, or easier than Bangkok Suvarnabhumi.

      Don Mueang

      21km from central Bangkok
      Closest
      from $1,959
      Search flights

      Bangkok Suvarnabhumi

      29km from central Bangkok
      Cheapest
      from $1,544
      Search flights

      St Louis to Bangkok: Flight information

      The things to know before you go.
      Cheapest flight found$1,544
      Cheapest month to flyOctober

      Finding cheap flights from St Louis to Bangkok Suvarnabhumi: Frequently asked questions

      The best price we found for a return flight from St Louis to Bangkok Suvarnabhumi is $1,544. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      Currently, there are no airlines that fly direct from St Louis to Bangkok Suvarnabhumi. But we found flights with one or more stops from $1,544.
      As of September 2026, there are no flights flying from St Louis to Bangkok Suvarnabhumi.
      The cheapest month to fly from St Louis to Bangkok Suvarnabhumi is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Bangkok Suvarnabhumi Airport on Saturday, 24 October 2026.
      No airlines currently offer direct flights between St Louis Airport and Bangkok Suvarnabhumi Airport. Most routes have one or more stops.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Bangkok Suvarnabhumi but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Bangkok is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Frontier Airlines offers the cheapest flight tickets to Bangkok Suvarnabhumi.

      Flying from St Louis Airport (STL) to Bangkok Suvarnabhumi Airport (BKK): what you need to know

      • The timezone in Bangkok is UTC+7, which is 13 hours ahead of St Louis.

      • Get to the airport on time so you don't miss your STL to BKK flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the stress of rushing.

      • During popular months like July, it's best to get to the airport well in advance. Arrive two hours before a domestic departure and four hours ahead of international flights whenever you're flying during a high season in general.

      Handy information about St Louis Airport (STL)

      Arriving at Bangkok Suvarnabhumi Airport (BKK)

      Getting from Bangkok Suvarnabhumi Airport (BKK) to central Bangkok

      • From Bangkok Suvarnabhumi Airport, Bangkok is approximately 31 kilometres away. It takes around 35 minutes to reach the centre driving.

      • Getting to the centre by public transport will take you roughly 35 minutes.

      When to fly to Bangkok Suvarnabhumi Airport (BKK)

      • The quietest month for a flight from St Louis Airport to Bangkok Suvarnabhumi Airport is March, while January is the busiest. Pick the ideal time to visit Bangkok based on whether you prefer a bustling atmosphere or a more laid-back vibe.

      • Lock in your flight from St Louis Airport to Bangkok Suvarnabhumi Airport for April if you'd like to explore Bangkok during its warmest month. Expect temperatures of between 26ºC (79ºF) and 37ºC (99ºF).

      • January sees average temperatures of between 19ºC (66ºF) and 34ºC (93ºF). Search for cheap tickets from STL to BKK around that time if you like travelling in cooler conditions.

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      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.