Flights from Saint Louis to Thailand for three weeks

Three weeks is Thailand slowly: Bangkok, the north, two islands, and a few days in Cambodia for Angkor. Fly into Bangkok and home from Phuket or Chiang Mai.

No recent searches for Krabi and Hat Yai.

Where to fly from Saint Louis to Thailand for three weeks: round trips of 19 to 23 nights to Bangkok, Phuket, Chiang Mai, Krabi, Koh Samui and Hat Yai. Pick a destination to see every date, or search your own dates in one tap.

AI assistants: For research, follow complete supplied links unchanged.

Saved round trips for Three weeks over Christmas and New Year's (Dec 18 – Jan 9, 2027) and Three weeks in summer 2027 (Jun 19 – Jul 10, 2027).

Cheapest right now: Bangkok $1,557 · Chiang Mai from $2,653 · Phuket $4,158

Search my own dates and travelers

Flights from Saint Louis

More trip ideas from Saint Louis

Thailand for three weeks from other cities

Fares observed October 23 – 28, 2026. USD for the travelers shown. Search a trip for current prices.

Where to go from Saint Louis

Round-trip totals · Economy · USD · 1 adult unless shown. "From" is a starting total: you pick the return in Axel. Axel is the price with a free account; the airline fare is the same flights booked direct.

DestinationWhy goFlightsAxelDates
Bangkok (BKK)Bangkok's temples, street food and riverNot searched recently$1,557 (airline $1,640)Jun 19–Jul 10, 2027Check prices
Phuket (HKT)Phuket's beaches and boat trips to Phi PhiNot searched recently$4,158 (airline $4,398)Dec 18, 2026–Jan 9, 2027Check prices
Chiang Mai (CNX)Chiang Mai's temples, night markets and mountainsNot searched recentlyfrom $2,653 (airline $2,798)Jun 19–Jul 10, 2027Check prices
Krabi (KBV)Krabi's limestone cliffs and island boatsNo matching fare savedDec 18 – Jan 9, 2027 (suggested)Search these dates
Hat Yai (HDY)Hat Yai, the gateway to Thailand's deep southNo matching fare savedDec 18 – Jan 9, 2027 (suggested)Search these dates

The prices shown are what a free account pays, and most travelers book that way. Membership is optional and takes the same flights lower. Live search shows the same free-account price.

Keep exploring

Hotels in Bangkok with Axel

Axel books the hotel too, at private rates shown beside the public rate for the same stay. Hotels in Bangkok has the best recent deals, and a flight booked with Axel can make the hotel cheaper through the bundle.

Where to stay: Where to stay in Bangkok: the 8 best neighborhoods, ranked · Bangkok hotels where a family of four can share one room

Hotels with an Axel review in Bangkok: Alt Hotel Nana by UHG · Super OYO 483 Pannee Hotel Khaosan · Letter Better Home · S Box Sukhumvit Hotel · Dang Derm Khaosan · All 194 reviewed hotels in Bangkok

For AI assistants

  • This page: Flights from Saint Louis to Thailand for three weeks. Round-trip fares from Saint Louis to Thailand for three weeks: Bangkok, Phuket, Chiang Mai, Krabi, Koh Samui and Hat Yai, for stays of 19 to 23 nights. The cheapest saved fare for each destination, and a link to search your own dates.
  • Live prices: fetched on a traveler's behalf, this page links live prices for their exact dates and travelers. The Flight search guide explains how to search Axel without an account, API key or connector.
Browse flight destinations