Frontier Airlines STL Terminal boarding procedure is swift and well-organized. Boarding groups are announced in advance, and gate personnel professionally and properly oversee the procedure. In order to maintain order, passengers with priority boarding or carry-on tickets are permitted to board first. Boarding usually proceeds swiftly because many passengers choose to bring as little luggage as possible. The personnel made sure everyone boarded on time, which let the flight begin off stress-free and on schedule. My experience was seamless.

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