Cheap flights from Saint Louis to United States

Travel > North America > United States

Travel tip: Don't miss to visit Haleakala National Park.

Check our current prices for flights from Saint Louis to United States. Please note that we also give you historical search data for this city connection. These are all airfares that people found in the past, in order to find more current flight information from Saint Louis to United States, you will need to run a search below.

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From $140 / RT details

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Cheap Phoenix airfares from $140/RT are provided by Cheapoair.com. Outbound flight is leaving on 04/13/2025, 04:57 pm from St. Louis Intl (STL) airport and arrives at Phoenix Intl (PHX) at 11:19 pm. The flight time is 6 hours and 22 minutes. The Returning flight departes on 04/21/2025, 11:24 pm (other return dates are also available). Date posted: 14 Feb 2025

Price evolution for flights From Saint Louis To United States

Price overview for flights from Saint Louis to United States

Recent Deals on Flights from Saint Louis to United States:Roundtrip / Oneway

  • $140Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Saint Louis, MO (STL)Phoenix, AZ (PHX)04/13/202504:57 pm
    Phoenix, AZ (PHX)Saint Louis, MO (STL)04/21/202511:24 pm
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  • $160Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Saint Louis, MO (STL)San Diego, CA (SAN)04/06/202512:37 pm
    San Diego, CA (SAN)Saint Louis, MO (STL)04/15/202504:21 pm
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  • $160Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Saint Louis, MO (STL)Phoenix, AZ (PHX)04/18/202506:51 pm
    Phoenix, AZ (PHX)Saint Louis, MO (STL)05/01/202505:50 am
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  • $230Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Saint Louis, MO (STL)Salt Lake City, UT (SLC)04/05/202506:33 pm
    Salt Lake City, UT (SLC)Saint Louis, MO (STL)04/11/202506:00 am
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  • $250Multiple Airlines flight Multiple Airlines 
    FromToDepartureTime
    Saint Louis, MO (STL)San Diego, CA (SAN)04/06/202506:35 am
    San Diego, CA (SAN)Saint Louis, MO (STL)04/15/202504:21 pm
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  • $108Spirit Airlines flight Spirit Airlines 
    FromToDepartureTime
    Saint Louis, MO (STL)Detroit, MI (DTW)04/17/202506:11 pm
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  • $146Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Saint Louis, MO (STL)Santa Ana, CA (SNA)04/14/202506:51 pm
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  • $166Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Saint Louis, MO (STL)Detroit, MI (DTW)04/17/202504:57 pm
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  • $175Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Saint Louis, MO (STL)Las Vegas, NV (LAS)04/16/202506:51 pm
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  • $296Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Saint Louis, MO (STL)Durham, NC (RDU)04/05/202504:57 pm
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