Latest Flight Deals from Washington D.C. to Ontario
Book one-way or return flights from Washington D.C. to Ontario from as little as NZD 77. Choose from the popular airlines below and book your flight today!
- One way
- Round-trip
- DCA18:518h 8m1 stopONT23:59Sat, May 4|Washington D.C. - Ontario|Frontier AirlinesNZD 77NZD 16654% OFF54% OFFNZD 166NZD 77
- DCA18:578h 2m1 stopONT23:59Sat, May 18|Washington D.C. - Ontario|Frontier AirlinesNZD 78NZD 16653% OFF53% OFFNZD 166NZD 78
- DCA18:518h 8m1 stopONT23:59Wed, May 1|Washington D.C. - Ontario|Frontier AirlinesNZD 88NZD 16647% OFF47% OFFNZD 166NZD 88
- DCA18:518h 8m1 stopONT23:59Tue, May 7|Washington D.C. - Ontario|Frontier AirlinesNZD 88NZD 88
- DCA07:0019h 59m1 stopONT23:59Tue, Apr 30|Washington D.C. - Ontario|Frontier AirlinesNZD 89NZD 89
- DCA18:5114h 35m1 stopONT06:26Mon, May 6|Washington D.C. - Ontario|Frontier AirlinesNZD 89NZD 89
- DCA07:0019h 59m1 stopONT23:59Mon, Apr 29|Washington D.C. - Ontario|Frontier AirlinesNZD 90NZD 90
- DCA07:0019h 59m1 stopONT23:59Wed, May 8|Washington D.C. - Ontario|Frontier AirlinesNZD 91NZD 91
- DCA12:5020h 36m1 stopONT06:26Thu, May 2|Washington D.C. - Ontario|Frontier AirlinesNZD 92NZD 92
- DCA07:0026h 26m1 stopONT06:26Fri, May 10|Washington D.C. - Ontario|Frontier AirlinesNZD 101NZD 101
- WAS13:003h 5mDirectONT14:00Sun, May 5|Washington D.C. - Ontario|Frontier AirlinesFind More FlightsFind More Flights
Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
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Find more flights and airlines
Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Washington D.C. to Ontario.
- CheapestDCA18:518h 8m1 transferONT23:59Ronald Reagan Washington National Airport - Ontario International AirportSat, May 4Frontier AirlinesNZD 77
- IAD07:157h 58m1 transferONT12:13Dulles International Airport - Ontario International AirportWed, May 8Delta Air LinesNZD 197
- IAD07:157h 58m1 transferONT12:13Dulles International Airport - Ontario International AirportWed, May 8Delta Air LinesNZD 197Find More Flights
How do I find the cheapest flights?
How to find a cheap flight from Washington D.C. to Ontario
Cheapest nonstop flight price | NZD 76 |
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Cheapest round-trip ticket price | NZD 275 |
Off-season for travel | October |
Peak season for travel | September |
Flight distance | 8,889.01km |
Popular airline | Frontier Airlines |
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