Cheap flights from Ontario, CA to Washington DC
Travel > North America > United States > Ontario, CA to Washington DC flights
Travel tip: Visit Washington DC on your holidays!Check our current prices for flights from Ontario, CA to Washington DC. 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, CA to Washington DC, you will need to run a search below.
Search and Compare cheap Flights

Book your flight now with Cheapoair.com and save!
Cheap Washington DC airfares from $507/RT are provided by Cheapoair.com. Outbound flight is leaving on 06/06/2025, 02:32 pm from Ontario Int`l (ONT) airport and arrives at Washington Dulles (IAD) at 06:32 am. The flight time is 16 hours and 0 minutes. The Returning flight departes on 06/09/2025, 08:00 am (other return dates are also available). Date posted: 16 Feb 2025
Price evolution for flights From Ontario, CA To Washington DC

Recent Deals on Flights from Ontario, CA to Washington DC:Roundtrip / Oneway
- $507
Multiple Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Washington DC, DC (IAD) 06/06/2025 02:32 pm Washington DC, DC (IAD) Ontario, CA (ONT) 06/09/2025 08:00 am - We are sorry but currently there are no oneway offers for flights from Ontario, CA to Washington DC.
Please visit this page again later or try out our merchant comparison search. Good luck!
Recently found cheap flight deals
Los Angeles To Nice Vueling Airlines airfares from Los Angeles in May
$1606 Depart: 05/25/2023
Return: 05/30/2023
provided by Cheapoair.com
Las Vegas To Winnipeg Multiple Airlines airfares from Las Vegas in August
$469 Depart: 08/03/2020
Return: 08/13/2020
provided by FlyFar
New Orleans To Las Vegas Multiple Airlines airfares from New Orleans in February
$289 Depart: 02/29/2024
Return: 03/15/2024
provided by Cheapoair.com
Washington DC To St. Lucia Multiple Airlines airfares from Washington DC in April
$2188 Depart: 04/02/2025
Return: 04/11/2025
provided by Cheapoair.com
Detroit To San Antonio Multiple Airlines airfares from Detroit in March
$626 Depart: 03/12/2025
Return: 03/26/2025
provided by Cheapoair.com
Dallas To Belize City Frontier Airlines airfares from Dallas in September
$477 Depart: 09/09/2022
Return: 09/17/2022
provided by Cheapoair.com
Tampa To Saint Louis Multiple Airlines airfares from Tampa in March
$273 Depart: 03/18/2025
Return: 03/28/2025
provided by Cheapoair.com
Los Angeles To Lisbon Swiss International Air Lines airfares from Los Angeles in September
$844 Depart: 09/29/2024
Return: 10/11/2024
provided by Cheapoair.com
Omaha To Tucson Alaska Airlines airfares from Omaha in July
$721 Depart: 07/28/2024
Return: 08/06/2024
provided by Cheapoair.com
Specify your search details. Browse the cheapest flights from Ontario, CA to Washington DC, Washington DC hotel rooms and Ontario, CA to Washington DC vacation packages from the most popular providers, airline consolidators and travel search engines.