Cheap flights from Washington DC to Ontario

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

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From $496 / RT details

Book your flight now with Cheapoair.com and save!

Cheap Ontario airfares from $496/RT are provided by Cheapoair.com. Outbound flight is leaving on 05/31/2022, 07:00 am from Reagan National (DCA) airport and arrives at Ontario Int`l (ONT) at 01:56 pm. The flight time is 6 hours and 56 minutes. The Returning flight departes on 06/14/2022, 11:59 pm (other return dates are also available). Date posted: 26 Jan 2022

Price evolution for flights From Washington DC To Ontario

Price overview for flights from Washington DC to Ontario

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

  • $496Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Washington DC, DC (DCA)Ontario, CA (ONT)05/31/202207:00 am
    Ontario, CA (ONT)Washington DC, DC (DCA)06/14/202211:59 pm
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  • $599Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Washington DC, DC (DCA)Ontario, CA (ONT)07/26/202207:00 am
    Ontario, CA (ONT)Washington DC, DC (DCA)08/10/202212:38 am
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  • $603Multiple Airlines flight Multiple Airlines 
    FromToDepartureTime
    Washington DC, DC (DCA)Ontario, CA (ONT)05/31/202208:00 am
    Ontario, CA (ONT)Washington DC, DC (DCA)06/14/202211:59 pm
    cheapoair.com check price
  • $605Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Washington DC, DC (DCA)Ontario, CA (ONT)08/03/202206:47 pm
    Ontario, CA (ONT)Washington DC, DC (DCA)08/09/202211:59 pm
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  • $653Multiple Airlines flight Multiple Airlines 
    FromToDepartureTime
    Washington DC, DC (IAD)Ontario, CA (ONT)05/31/202207:20 pm
    Ontario, CA (ONT)Washington DC, DC (IAD)06/14/202211:59 pm
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  • $264Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Washington DC, DC (DCA)Ontario, CA (ONT)06/21/202207:00 am
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  • $397Alaska Airlines flight Alaska Airlines 
    FromToDepartureTime
    Washington DC, DC (IAD)Ontario, CA (ONT)06/21/202206:00 am
    cheapoair.com check price
  • $398Alaska Airlines flight Alaska Airlines 
    FromToDepartureTime
    Washington DC, DC (DCA)Ontario, CA (ONT)06/21/202208:00 am
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Know what to do when flying to Ontario?

Ontario Travel Guide A city in the San Bernardino County in California, Ontario offers wonderful living conditions for its residents. Over the years its reputation as a significant tourist attraction has also grown considerably. The city got the name of Ontario [...]
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