Cheap flights from Ontario to Saint Louis

Travel > North America > United States > Ontario to Saint Louis flights

Check our current prices for flights from Ontario to Saint Louis. 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 Ontario to Saint Louis, you will need to run a search below.

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From $388 / RT details

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Cheap Saint Louis airfares from $388/RT are provided by Cheapoair.com. Outbound flight is leaving on 09/21/2022, 12:38 am from Ontario Int`l (ONT) airport and arrives at St. Louis Intl (STL) at 02:31 pm. The flight time is 13 hours and 53 minutes. The Returning flight departes on 09/28/2022, 01:59 pm (other return dates are also available). Date posted: 01 May 2022

Price evolution for flights From Ontario To Saint Louis

Price overview for flights from Ontario to Saint Louis

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

  • $388Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)09/21/202212:38 am
    Saint Louis, MO (STL)Ontario, CA (ONT)09/28/202201:59 pm
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  • $388Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)09/21/202208:12 pm
    Saint Louis, MO (STL)Ontario, CA (ONT)10/04/202201:59 pm
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  • $593Multiple Airlines flight Multiple Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)09/21/202208:12 pm
    Saint Louis, MO (STL)Ontario, CA (ONT)09/28/202207:10 pm
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  • $628Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)07/30/202206:27 pm
    Saint Louis, MO (STL)Ontario, CA (ONT)08/09/202208:13 pm
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  • $681Multiple Airlines flight Multiple Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)09/21/202208:30 pm
    Saint Louis, MO (STL)Ontario, CA (ONT)10/04/202206:11 pm
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  • $130Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)08/26/202210:57 am
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  • $250Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)07/17/202212:56 pm
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  • $290Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)08/09/202212:56 pm
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  • $527Alaska Airlines flight Alaska Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)08/26/202210:00 am
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  • $577Alaska Airlines flight Alaska Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)07/17/202206:00 am
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Know what to do when flying to Saint Louis?

Saint Louis Travel Guide In 1764, René Augusta Chouteau and Pierre Laclede established Saint Louis as a fur trading post, after Louis IX, the king of France. The Soulard Farmer’s Market, which was founded in 1779, is in operation till date and prides [...]
Saint Louis History   Saint Louis, which belongs to the state of Missouri, is the second largest city in the state and has a rich history behind it. The city traces its roots back to the year 1763. It was founded by Pierre LaClede. He founded the city as a place [...]
Saint Louis Sightseeing Saint Louis is located in the state of Missouri and happens to be the second largest city in the state. It is also referred to as the ‘Gateway City’ by many people. The city experiences a large footfall of visitors from all over the world [...]
Saint Louis Nightlife Saint Louis is one of the famous cities in Missouri and has a lot of attractions for tourists to enjoy. It provides everyone with many opportunities to spend quality time. People can not only enjoy visiting the various tourist spots that are [...]
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