AirHint found the following cheapest return flights from St. Louis (STL) to Vancouver (YVR) in May 2026 (see full year).
Return flights
| 04 May - 18 May | Frontier Airlines | ||
| 01 May - 08 May | Frontier Airlines | ||
| 09 May - 13 May | Frontier Airlines | ||
| 03 May - 12 May | Frontier Airlines |
Also check the deals for one-way flights from St. Louis to Vancouver in May.
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