United flights from Rome to Saint Louis from 687€ *

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Rome (FCO) to Saint Louis (STL)

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$ 429
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Range$ 429

*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

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