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Cheap flights from Washington to Ontario from US$132
There are no direct flights from Washington to Ontario. The fastest way is one stop via Atlanta or Dallas, about 6h 40m door to door (346 connections a week on current schedules), with fares from US$132.
No direct flights · 6 connection options From 6h 32m Cheapest in November Prices checked 13 days ago
Washington to Ontario at a glance
Cheapest one-wayUS$132Frontier Airlines · 1 stop · Sat 7 NovCheapest returnUS$169Tue 1 Dec – Tue 8 DecFastest journey6h 32mFrontier Airlines · 1 stop
Nonstop flightsNoneConnect via Atlanta or Dallas
Best ways to fly from Washington to Ontario
Ranked by how easy the connection is: one airline or alliance first (bags and connection protected), then the quickest self-transfer options.
1Search
WAS Atlanta (ATL) ONT
Leg 1: American Airlines, Delta Air Lines, Southwest Airlines · Leg 2: Delta Air Lines
Mon07:00 WAS08:36 ATL0h 54m connection09:30 ATL10:40 ONTDelta Air Lines
2Search
WAS Dallas (DFW) ONT
Leg 1: American Airlines, Frontier Airlines, United Airlines · Leg 2: American Airlines, Frontier Airlines
Sat12:30 WAS14:20 DFW1h 10m connection15:30 DFW16:15 ONTFrontier Airlines
3Search
WAS Chicago (ORD) ONT
Leg 1: American Airlines, United Airlines, Envoy Air · Leg 2: United Airlines, Volaris
Mon18:15 WAS19:16 ORD1h 14m connection20:30 ORD22:26 ONTUnited Airlines
4Search
WAS Denver (DEN) ONT
Leg 1: United Airlines · Leg 2: Frontier Airlines, Southwest Airlines, United Airlines
Tue08:15 WAS09:49 DEN1h 41m connection11:30 DEN12:38 ONTUnited Airlines
5Search
WAS San Francisco (SFO) ONT
Leg 1: United Airlines · Leg 2: Frontier Airlines, United Airlines
Tue09:45 WAS12:15 SFO0h 45m connection13:00 SFO14:15 ONTUnited Airlines
6Search
WAS Las Vegas (LAS) ONT
Leg 1: Frontier Airlines, United Airlines · Leg 2: Frontier Airlines, Southwest Airlines
Mon06:00 WAS07:44 LAS2h 16m connection10:00 LAS10:51 ONTFrontier Airlines
Connections are computed from flights actually flown over the last 8 weeks, with at least 45 minutes to change on one airline and 2 hours on separate tickets. Times are local. The search shows live itineraries and exact times.
Cheapest dates from Washington to Ontario
The lowest one-way fares found recently, cheapest first. Prices change; click through for the live fare.
Good to know
- Distance
- 3,640 km2,260 miles
- Journey time
- 6h 32mfastest found
- Time difference
- -3hOntario vs Washington
- Currency in Ontario
- USD
- Airports
- IAD, DCA → ONT
Flights from Washington to Ontario: questions answered
How much is a flight from Washington to Ontario?
The cheapest one-way fare we found recently is US$132 with 1 stop, departing in November. Return trips start from US$169. Prices change constantly, so search your dates for the live fare.
Are there direct flights from Washington to Ontario?
No. There is no nonstop service, so you will connect, most easily in Atlanta, Dallas and Chicago. Some connections are on one airline or alliance, so your bags and connection are protected on a single ticket.
How long is the flight from Washington to Ontario?
With one connection the journey usually takes around 6h 32m, depending on the layover. The straight-line distance is 3,640 km.
Where do you change planes between Washington and Ontario?
The best connecting points are Atlanta (ATL), Dallas (DFW), Chicago (ORD) and Denver (DEN). American Airlines flies both legs via Atlanta, so you can book it as one ticket.
Which airports serve Washington and Ontario?
Washington: Washington Dulles International Airport (IAD) and Ronald Reagan Washington National Airport (DCA). Ontario: Ontario International Airport (ONT).
What is the time difference between Washington and Ontario?
Ontario is 3 hours behind Washington.
