$124 Flight Deals from Washington Dulles Airport to Ontario International Airport

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Stops

Up to 1 stop

$249

Up to 2 stops

$292

Airlines

Alaska Airlines

$267

American Airlines

$397

Delta Air Lines

$271

Frontier Airlines

$249

Hawaiian Airlines

$292

United Airlines

$416

Cabin Class

Economy

$249

Departure Airports

Washington Dulles Airport

$249

Arrival Airports

Ontario International Airport

$249

Layover Airports

Charlotte Douglas International Airport

$397

Dallas Fort Worth International Airport

$397

Denver International Airport

$516

Detroit Metropolitan Airport

$293

Harry Reid International Airport

$249

Hartsfield Jackson Atlanta International Airport

$276

Minneapolis-St Paul International/Wold-Chamberlain Airport

$488

Salt Lake City International Airport

$276

San Francisco International Airport

$281

Seattle Tacoma International Airport

$267

Best Price. GUARANTEED.

Exclusively for Priceline Members
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On average save $240 per traveler

Frontier Airlines

05/08/25

7:45am

IAD

7h 54m

LAS

05/08/25

3:39pm

ONT

Frontier Airlines

05/12/25

2:28pm

ONT

16h 3m

LAS

05/13/25

6:31am

IAD

^$249

Free cancellation within 83 hours of booking

Frontier Airlines

05/05/25

8:01am

IAD

5h 15m

LAS

05/05/25

1:16pm

ONT

Frontier Airlines

05/12/25

2:28pm

ONT

16h 3m

LAS

05/13/25

6:31am

IAD

^$249

Free cancellation within 83 hours of booking

Frontier Airlines

05/13/25

7:45am

IAD

4h 23m

LAS

05/13/25

12:08pm

ONT

Frontier Airlines

05/17/25

1:15pm

ONT

17h 16m

LAS

05/18/25

6:31am

IAD

^$249

Free cancellation within 83 hours of booking

Alaska Airlines

05/01/25

6:30am

IAD

9h 2m

SEA

05/01/25

3:32pm

ONT

Alaska Airlines

05/14/25

3:08pm

ONT

14h 38m

SEA

05/15/25

5:46am

IAD

^$267

Free cancellation within 83 hours of booking

Delta Air Lines

05/05/25

7:25am

IAD

9h 19m

SEA

05/05/25

4:44pm

ONT

Delta Air Lines

05/06/25

8:02am

ONT

7h 58m

Direct

05/06/25

4:00pm

IAD

^$271

Free cancellation within 83 hours of booking

Delta Air Lines

04/28/25

7:25am

IAD

9h 19m

SEA

04/28/25

4:44pm

ONT

Delta Air Lines

05/06/25

8:02am

ONT

7h 58m

Direct

05/06/25

4:00pm

IAD

^$271

Free cancellation within 83 hours of booking

Alaska Airlines

04/28/25

6:30am

IAD

9h 2m

SEA

04/28/25

3:32pm

ONT

Alaska Airlines

04/30/25

8:00am

ONT

Direct

04/30/25

4:00pm

IAD

^$271

Free cancellation within 83 hours of booking

Alaska Airlines

05/01/25

6:30am

IAD

9h 2m

SEA

05/01/25

3:32pm

ONT

Alaska Airlines

05/05/25

8:00am

ONT

Direct

05/05/25

4:00pm

IAD

^$271

Free cancellation within 83 hours of booking

Delta Air Lines

05/01/25

7:25am

IAD

9h 19m

SEA

05/01/25

4:44pm

ONT

Delta Air Lines

05/03/25

8:02am

ONT

7h 58m

Direct

05/03/25

4:00pm

IAD

^$271

Free cancellation within 83 hours of booking

Delta Air Lines

04/19/25

7:35am

IAD

4h 41m

SLC

04/19/25

12:16pm

ONT

Delta Air Lines

05/03/25

8:02am

ONT

7h 58m

Direct

05/03/25

4:00pm

IAD

^$276

Free cancellation within 83 hours of booking

Delta Air Lines

04/20/25

12:29pm

IAD

6h 59m

ATL

04/20/25

7:28pm

ONT

Delta Air Lines

05/03/25

8:02am

ONT

7h 58m

Direct

05/03/25

4:00pm

IAD

^$276

Free cancellation within 83 hours of booking

Alaska Airlines

04/28/25

6:30am

IAD

9h 2m

SEA

04/28/25

3:32pm

ONT

Alaska Airlines

04/30/25

6:46am

ONT

10h 36m

SFO

04/30/25

5:22pm

IAD

^$281

Free cancellation within 83 hours of booking

Delta Air Lines

05/01/25

7:25am

IAD

9h 19m

SEA

05/01/25

4:44pm

ONT

Delta Air Lines

05/14/25

4:54pm

ONT

12h 46m

SLC

05/15/25

5:40am

IAD

^$287

Free cancellation within 83 hours of booking

Delta Air Lines

05/11/25

6:00am

IAD

5h 8m

ATL

05/11/25

11:08am

ONT

Delta Air Lines

05/14/25

4:54pm

ONT

12h 46m

SLC

05/15/25

5:40am

IAD

^$287

Free cancellation within 83 hours of booking

Delta Air Lines

04/29/25

7:25am

IAD

9h 19m

SEA

04/29/25

4:44pm

ONT

Delta Air Lines

04/30/25

5:00pm

ONT

16h 12m

SLC

ATL

05/01/25

9:12am

IAD

^$292

Free cancellation within 83 hours of booking

Hawaiian Airlines

04/28/25

6:30am

IAD

9h 2m

SEA

04/28/25

3:32pm

ONT

Hawaiian Airlines

04/29/25

8:00am

ONT

Direct

04/29/25

4:00pm

IAD

^$292

Free cancellation within 83 hours of booking

Hawaiian Airlines

05/01/25

6:30am

IAD

9h 2m

SEA

05/01/25

3:32pm

ONT

Hawaiian Airlines

05/05/25

8:00am

ONT

Direct

05/05/25

4:00pm

IAD

^$292

Free cancellation within 83 hours of booking

Delta Air Lines

04/27/25

6:00am

IAD

4h 57m

ATL

04/27/25

10:57am

ONT

Delta Air Lines

05/13/25

12:59am

ONT

11h 11m

DTW

05/13/25

12:10pm

IAD

^$293

Free cancellation within 83 hours of booking

Delta Air Lines

05/03/25

6:00am

IAD

4h 57m

ATL

05/03/25

10:57am

ONT

Delta Air Lines

05/06/25

6:00am

ONT

10h 50m

DTW

05/06/25

4:50pm

IAD

^$293

Free cancellation within 83 hours of booking

Delta Air Lines

05/04/25

7:25am

IAD

6h 30m

SEA

05/04/25

1:55pm

ONT

Delta Air Lines

05/13/25

5:35am

ONT

10h 48m

DTW

05/13/25

4:23pm

IAD

^$293

Free cancellation within 83 hours of booking

Delta Air Lines

04/20/25

7:35am

IAD

4h 41m

SLC

04/20/25

12:16pm

ONT

Delta Air Lines

04/30/25

5:00pm

ONT

16h 12m

SLC

ATL

05/01/25

9:12am

IAD

^$297

Free cancellation within 83 hours of booking

Hawaiian Airlines

04/28/25

6:30am

IAD

9h 2m

SEA

04/28/25

3:32pm

ONT

Hawaiian Airlines

04/29/25

7:59pm

ONT

11h 44m

SEA

04/30/25

7:43am

IAD

^$309

Free cancellation within 83 hours of booking

Delta Air Lines

04/27/25

6:00am

IAD

4h 57m

ATL

04/27/25

10:57am

ONT

Delta Air Lines

04/30/25

5:00pm

ONT

16h 12m

SLC

ATL

05/01/25

9:12am

IAD

^$323

Free cancellation within 83 hours of booking

Hawaiian Airlines

04/25/25

6:30am

IAD

9h 2m

SEA

04/25/25

3:32pm

ONT

Hawaiian Airlines

04/28/25

6:47pm

ONT

10h 53m

SFO

04/29/25

5:40am

IAD

^$396

Free cancellation within 83 hours of booking

American Airlines

05/07/25

5:07pm

IAD

4h 51m

DFW

05/07/25

9:58pm

ONT

American Airlines

05/11/25

6:00am

ONT

10h 37m

CLT

05/11/25

4:37pm

IAD

^$397

Free cancellation within 83 hours of booking

American Airlines

05/03/25

6:18am

IAD

5h 28m

DFW

05/03/25

11:46am

ONT

American Airlines

05/10/25

10:51am

ONT

12h 6m

DFW

05/10/25

10:57pm

IAD

^$416

Free cancellation within 83 hours of booking

American Airlines

04/29/25

6:18am

IAD

5h 28m

DFW

04/29/25

11:46am

ONT

American Airlines

05/06/25

6:15am

ONT

10h 2m

DFW

05/06/25

4:17pm

IAD

^$416

Free cancellation within 83 hours of booking

United Airlines

05/07/25

2:32pm

IAD

6h 2m

SFO

05/07/25

8:34pm

ONT

United Airlines

05/14/25

1:45pm

ONT

11h 24m

SFO

05/15/25

1:09am

IAD

^$416

Free cancellation within 83 hours of booking

Delta Air Lines

04/27/25

6:00am

IAD

6h 16m

MSP

SLC

04/27/25

12:16pm

ONT

Delta Air Lines

04/30/25

5:00pm

ONT

16h 12m

SLC

ATL

05/01/25

9:12am

IAD

^$488

Free cancellation within 83 hours of booking

United Airlines

05/16/25

6:30am

IAD

7h 55m

SFO

05/16/25

2:25pm

ONT

United Airlines

05/23/25

6:32pm

ONT

10h 43m

DEN

05/24/25

5:15am

IAD

^$516

Free cancellation within 83 hours of booking

Top Deals on flights from Washington Dulles Airport to Ontario International Airport

Washington, US (WAS) - Los Angeles, US (LAX)

Frontier Airlines

May 5

8:01am

IAD

5h 15m

LAS

May 5

1:16pm

ONT

as low as

$124

Washington, US (WAS) - Los Angeles, US (LAX)

Frontier Airlines

May 6

7:45am

IAD

4h 23m

LAS

May 6

12:08pm

ONT

as low as

$124

Washington, US (WAS) - Los Angeles, US (LAX)

Delta Air Lines

May 5

7:35am

IAD

4h 41m

SLC

May 5

12:16pm

ONT

as low as

$158

Washington, US (WAS) - Los Angeles, US (LAX)

Delta Air Lines

May 6

7:35am

IAD

4h 41m

SLC

May 6

12:16pm

ONT

as low as

$158

Washington, US (WAS) - Los Angeles, US (LAX)

Delta Air Lines

May 11

6:00am

IAD

5h 8m

ATL

May 11

11:08am

ONT

as low as

$158

Washington, US (WAS) - Los Angeles, US (LAX)

Delta Air Lines

May 7

6:00am

IAD

5h 8m

ATL

May 7

11:08am

ONT

as low as

$158

Washington, US (WAS) - Los Angeles, US (LAX)

Delta Air Lines

Apr 28

7:25am

IAD

9h 19m

SEA

Apr 28

4:44pm

ONT

as low as

$158

Washington, US (WAS) - Los Angeles, US (LAX)

Alaska Airlines

May 1

6:30am

IAD

9h 2m

SEA

May 1

3:32pm

ONT

as low as

$158

Washington, US (WAS) - Los Angeles, US (LAX)

Alaska Airlines

Apr 28

6:30am

IAD

9h 2m

SEA

Apr 28

3:32pm

ONT

as low as

$158

Washington, US (WAS) - Los Angeles, US (LAX)

Hawaiian Airlines

May 1

6:30am

IAD

9h 2m

SEA

May 1

3:32pm

ONT

as low as

$172

Washington, US (WAS) - Los Angeles, US (LAX)

Hawaiian Airlines

Apr 28

6:30am

IAD

9h 2m

SEA

Apr 28

3:32pm

ONT

as low as

$172

Washington, US (WAS) - Los Angeles, US (LAX)

American Airlines

May 21

1:59pm

IAD

7h 6m

CLT

May 21

9:05pm

ONT

as low as

$208

Flights to Los Angeles

Return flights

Flights From Ontario International Airport To Washington Dulles Airport

Browse origins

Flights
North America
United States
Washington, D.c.
Washington
Washington Dulles Airport

Browse destinations

Flights
North America
United States
California
Los Angeles
Ontario International Airport

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Flight Deals from Washington Dulles Airport to Ontario International Airport from $124

Stops

Airlines

Cabin Class

Departure Airports

Arrival Airports

Layover Airports

Best Price. GUARANTEED.

Top Deals on flights from Washington Dulles Airport to Ontario International Airport

Flights to Los Angeles

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