Cheap flights from Seattle to Ontario, CA

Travel > North America > United States > Seattle to Ontario, CA flights

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

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From $118 / RT details

Book your flight now with Cheapoair.com and save!

Cheap Ontario airfares from $118/RT are provided by Cheapoair.com. Outbound flight is leaving on 01/09/2025, 04:35 pm from Seattle/tacoma Sea/tac (SEA) airport and arrives at Ontario Int`l (ONT) at 07:14 pm. The flight time is 2 hours and 39 minutes. The Returning flight departes on 01/15/2025, 12:34 pm (other return dates are also available). Date posted: 17 Nov 2024

Price evolution for flights From Seattle To Ontario, CA

Recent Deals on Flights from Seattle to Ontario, CA:Roundtrip / Oneway

• $118 Frontier Airlines 

  From	To	Departure	Time
  Seattle, WA (SEA)	Ontario, CA (ONT)	01/09/2025	04:35 pm
  Ontario, CA (ONT)	Seattle, WA (SEA)	01/15/2025	12:34 pm

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• $188 Frontier Airlines 

  From	To	Departure	Time
  Seattle, WA (SEA)	Ontario, CA (ONT)	12/24/2024	07:01 pm
  Ontario, CA (ONT)	Seattle, WA (SEA)	01/02/2025	04:26 pm

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• $553 Frontier Airlines 

  From	To	Departure	Time
  Seattle, WA (SEA)	Ontario, CA (ONT)	12/21/2024	09:36 pm
  Ontario, CA (ONT)	Seattle, WA (SEA)	12/27/2024	12:59 am

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• $85 Frontier Airlines 

  From	To	Departure	Time
  Seattle, WA (SEA)	Ontario, CA (ONT)	01/13/2025	09:47 am

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• $123 Frontier Airlines 

  From	To	Departure	Time
  Seattle, WA (SEA)	Ontario, CA (ONT)	12/19/2024	06:52 pm

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• $135 Frontier Airlines 

  From	To	Departure	Time
  Seattle, WA (SEA)	Ontario, CA (ONT)	12/30/2024	09:36 pm

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