Cheapest return flights from St. Louis to Prague in May from $963

AirHint found the following cheapest return flights from St. Louis (STL) to Prague (PRG) in May 2026 (see full year).

Return flights

24 May - 29 May Frontier Airlines
23 May - 30 May Alaska Airlines
23 May - 29 May Air Canada

Also check the deals for one-way flights from St. Louis to Prague in May.

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