Today's drop ·
Cheap flights from St. Louis to Bangkok
$1007 round trip right now, 13% under the $1157 this route usually costs.
How cheap is this?
Telly prices every departure date six months out on this route, for trips of 2 to 14 nights, and measures each fare against what the route usually costs. The cheapest round trip right now is $1007 on Alaska Airlines, 2 stops, against a usual $1157. 17% under usual, among this route's lowest.
When to go
The cheapest dates fall in Feb–Apr, for trips of 3 to 5 nights. Feb in Bangkok runs around 89°. The dates come picked because a cheap fare only exists on certain days; the exact ones and the booking link are in the app.
Passport required
Bangkok is outside the US and Canada, so you need a passport. Every flight on Telly leaves the country; that is the whole filter.
Questions about this route
How much is a flight from St. Louis to Bangkok?+
Right now $1007 round trip, on Alaska Airlines. The route usually costs $1157, so this fare is 13% under. Checked Nov 3, 2026.
When are the cheapest dates to fly to Bangkok?+
The cheapest dates Telly found are in Feb–Apr, for trips of 3 to 5 nights. It prices every departure date six months out on this route and keeps only the lowest. The exact dates are in the app.
Do I need a passport to fly from St. Louis to Bangkok?+
Yes. Bangkok is outside the US and Canada, and every flight on Telly leaves the country, so every one needs a passport.
