Flights from Portland, ME to Saint Louis from $ 319*
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1 Passenger, Economy
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today
today
Featured daily fares for flights from Portland, ME (PWM) to Saint Louis (STL)
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More United deals on Portland, ME (PWM) to Saint Louis (STL) flights
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From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| Portland, ME (PWM) | Saint Louis (STL) | Roundtrip | Economy | 07/14/26 - 07/21/26 | from $ 319 Viewed: 1 hour ago |
| Portland, ME (PWM) | Saint Louis (STL) | Roundtrip | Economy | 06/09/26 - 06/16/26 | from $ 319 Viewed: 1 hour ago |
| Portland, ME (PWM) | Saint Louis (STL) | Roundtrip | Economy | 06/23/26 - 06/30/26 | from $ 319 Viewed: 1 hour ago |
| Portland, ME (PWM) | Saint Louis (STL) | Roundtrip | Economy | 07/15/26 - 07/22/26 | from $ 319 Viewed: 1 hour ago |
| Portland, ME (PWM) | Saint Louis (STL) | Roundtrip | Economy | 07/21/26 - 07/28/26 | from $ 319 Viewed: 1 hour ago |
| Portland, ME (PWM) | Saint Louis (STL) | Roundtrip | Economy | 08/04/26 - 08/11/26 | from $ 319 Viewed: 1 hour ago |
| Portland, ME (PWM) | Saint Louis (STL) | Roundtrip | Economy | 07/01/26 - 07/08/26 | from $ 319 Viewed: 1 hour ago |
| Portland, ME (PWM) | Saint Louis (STL) | Roundtrip | Economy | 07/07/26 - 07/14/26 | from $ 319 Viewed: 1 hour ago |
*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. Schedules are subject to change without notice.
