Cheap flights from Washington DC to Ontario, CA

Travel > North America > United States > Washington DC to Ontario, CA flights

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

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From $748 / RT details

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Cheap Ontario airfares from $748/RT are provided by Cheapoair.com. Outbound flight is leaving on 03/19/2025, 12:59 pm from Reagan National (DCA) airport and arrives at Ontario Int`l (ONT) at 11:39 pm. The flight time is 10 hours and 40 minutes. The Returning flight departes on 04/02/2025, 12:49 am (other return dates are also available). Date posted: 23 Oct 2024

Price evolution for flights From Washington DC To Ontario, CA

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

• $748 Frontier Airlines 

  From	To	Departure	Time
  Washington DC, DC (DCA)	Ontario, CA (ONT)	03/19/2025	12:59 pm
  Ontario, CA (ONT)	Washington DC, DC (DCA)	04/02/2025	12:49 am

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• $90 Frontier Airlines 

  From	To	Departure	Time
  Washington DC, DC (DCA)	Ontario, CA (ONT)	03/08/2025	06:00 pm

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• $90 Frontier Airlines 

  From	To	Departure	Time
  Washington DC, DC (DCA)	Ontario, CA (ONT)	04/02/2025	06:00 pm

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• $375 Frontier Airlines 

  From	To	Departure	Time
  Washington DC, DC (DCA)	Ontario, CA (ONT)	03/23/2025	06:00 pm

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• $381 Frontier Airlines 

  From	To	Departure	Time
  Washington DC, DC (DCA)	Ontario, CA (ONT)	03/30/2025	07:00 am

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• $435 Frontier Airlines 

  From	To	Departure	Time
  Washington DC, DC (DCA)	Ontario, CA (ONT)	03/14/2025	06:00 pm

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