$123 Flight Deals from Ontario International Airport to Washington

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Save an average of $240 per person when bundling your flight and hotel together with Priceline

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Stops

Up to 1 stop

$247

Up to 2 stops

$277

Airlines

Alaska Airlines

$261

American Airlines

$352

Delta Air Lines

$267

Frontier Airlines

$247

Hawaiian Airlines

$287

United Airlines

$416

Cabin Class

Economy

$247

Departure Airports

Ontario International Airport

$247

Arrival Airports

Reagan Washington National Airport

$247

Washington Dulles Airport

$261

Layover Airports

Charlotte Douglas International Airport

$358

Chicago O Hare Airport

$357

Dallas Fort Worth International Airport

$352

Denver International Airport

$247

Detroit Metropolitan Airport

$277

General Edward Lawrence Logan International Airport

$352

Harry Reid International Airport

$247

Hartsfield Jackson Atlanta International Airport

$267

Minneapolis-St Paul International/Wold-Chamberlain Airport

$484

New York John F Kennedy Airport

$427

New York LaGuardia Airport

$321

Newark Liberty Airport

$706

Norman Y. Mineta San Jose International Airport

$501

Phoenix Sky Harbor International Airport

$352

Portland International Airport

$307

Salt Lake City International Airport

$272

San Francisco International Airport

$362

Seattle Tacoma International Airport

$261

Best Price. GUARANTEED.

Exclusively for Priceline Members
Tired of searching? Book now!
We'll refund the difference if you find a lower price.

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Book a flight & hotel together for extra savings.

On average save $240 per traveler

Frontier Airlines

04/23/25

12:59am

ONT

11h 10m

DEN

04/23/25

12:09pm

DCA

Frontier Airlines

04/30/25

7:00am

DCA

4h 20m

DEN

04/30/25

11:20am

ONT

^$247

Free cancellation within 83 hours of booking

Frontier Airlines

05/08/25

12:08am

ONT

21h 51m

DEN

05/08/25

9:59pm

DCA

Frontier Airlines

05/09/25

7:45am

DCA

5h 31m

LAS

05/09/25

1:16pm

ONT

^$247

Free cancellation within 83 hours of booking

Frontier Airlines

04/22/25

12:10pm

ONT

9h 49m

DEN

04/22/25

9:59pm

DCA

Frontier Airlines

04/29/25

6:00pm

DCA

5h 59m

DEN

04/29/25

11:59pm

ONT

^$247

Free cancellation within 83 hours of booking

Alaska Airlines

04/25/25

11:46am

ONT

12h 37m

SEA

04/26/25

12:23am

IAD

Alaska Airlines

05/10/25

5:38pm

IAD

2h 49m

Direct

05/10/25

8:27pm

ONT

^$261

Free cancellation within 83 hours of booking

Alaska Airlines

05/05/25

6:24pm

ONT

13h 19m

SEA

05/06/25

7:43am

IAD

Alaska Airlines

05/06/25

10:00am

IAD

6h 45m

SEA

05/06/25

4:45pm

ONT

^$266

Free cancellation within 83 hours of booking

Delta Air Lines

05/02/25

12:07pm

ONT

9h 29m

ATL

05/02/25

9:36pm

DCA

Delta Air Lines

05/03/25

5:10pm

DCA

2h 52m

Direct

05/03/25

8:02pm

ONT

^$267

Free cancellation within 83 hours of booking

Delta Air Lines

05/01/25

10:15pm

ONT

11h 3m

ATL

05/02/25

9:18am

IAD

Delta Air Lines

05/03/25

5:10pm

IAD

2h 52m

Direct

05/03/25

8:02pm

ONT

^$267

Free cancellation within 83 hours of booking

Delta Air Lines

05/09/25

1:10pm

ONT

10h 18m

SLC

05/09/25

11:28pm

IAD

Delta Air Lines

05/10/25

5:15pm

IAD

2h 40m

Direct

05/10/25

7:55pm

ONT

^$272

Free cancellation within 83 hours of booking

Delta Air Lines

05/06/25

1:20pm

ONT

10h 11m

SLC

05/06/25

11:31pm

IAD

Delta Air Lines

05/10/25

5:15pm

IAD

2h 40m

Direct

05/10/25

7:55pm

ONT

^$272

Free cancellation within 83 hours of booking

Delta Air Lines

04/28/25

10:15pm

ONT

13h 16m

ATL

DTW

04/29/25

11:31am

IAD

Delta Air Lines

04/29/25

5:10pm

IAD

2h 52m

Direct

04/29/25

8:02pm

ONT

^$277

Free cancellation within 83 hours of booking

Hawaiian Airlines

05/16/25

7:20pm

ONT

12h 16m

SEA

05/17/25

7:36am

IAD

Hawaiian Airlines

05/24/25

7:25pm

IAD

2h 38m

Direct

05/24/25

10:03pm

ONT

^$287

Free cancellation within 83 hours of booking

Delta Air Lines

04/28/25

10:15pm

ONT

18h 24m

ATL

DTW

04/29/25

4:39pm

IAD

Delta Air Lines

04/30/25

4:45pm

IAD

5h 16m

ATL

04/30/25

10:01pm

ONT

^$298

Free cancellation within 83 hours of booking

Alaska Airlines

05/16/25

7:20pm

ONT

12h 16m

SEA

05/17/25

7:36am

IAD

Alaska Airlines

05/24/25

5:44pm

IAD

6h 12m

PDX

05/24/25

11:56pm

ONT

^$307

Free cancellation within 83 hours of booking

Delta Air Lines

04/25/25

12:07pm

ONT

10h 31m

ATL

04/25/25

10:38pm

DCA

Delta Air Lines

04/30/25

11:00am

DCA

11h 36m

LGA

ATL

04/30/25

10:36pm

ONT

^$321

Free cancellation within 83 hours of booking

Delta Air Lines

04/28/25

5:15pm

ONT

16h 3m

SLC

ATL

04/29/25

9:18am

IAD

Delta Air Lines

04/30/25

11:00am

IAD

11h 36m

LGA

ATL

04/30/25

10:36pm

ONT

^$326

Free cancellation within 83 hours of booking

Hawaiian Airlines

05/16/25

7:20pm

ONT

12h 16m

SEA

05/17/25

7:36am

IAD

Hawaiian Airlines

05/24/25

5:44pm

IAD

6h 12m

PDX

05/24/25

11:56pm

ONT

^$335

Free cancellation within 83 hours of booking

American Airlines

04/30/25

12:50pm

ONT

18h 7m

PHX

BOS

05/01/25

6:57am

DCA

American Airlines

05/10/25

11:54am

DCA

6h 42m

DFW

05/10/25

6:36pm

ONT

^$352

Free cancellation within 83 hours of booking

American Airlines

04/30/25

12:50pm

ONT

18h 7m

PHX

BOS

05/01/25

6:57am

DCA

American Airlines

05/10/25

9:30am

DCA

8h 53m

ORD

PHX

05/10/25

6:23pm

ONT

^$357

Free cancellation within 83 hours of booking

American Airlines

04/30/25

12:50pm

ONT

10h 10m

DFW

04/30/25

11:00pm

DCA

American Airlines

05/10/25

1:44pm

DCA

7h 21m

CLT

05/10/25

9:05pm

ONT

^$358

Free cancellation within 83 hours of booking

Alaska Airlines

05/11/25

7:24pm

ONT

12h 19m

SEA

05/12/25

7:43am

IAD

Alaska Airlines

05/20/25

7:15am

IAD

4h 39m

SFO

05/20/25

11:54am

ONT

^$362

Free cancellation within 83 hours of booking

United Airlines

05/13/25

5:05am

ONT

10h 31m

DEN

05/13/25

3:36pm

IAD

United Airlines

05/20/25

10:10am

IAD

4h 59m

DEN

05/20/25

3:09pm

ONT

^$416

Free cancellation within 83 hours of booking

American Airlines

04/22/25

10:40pm

ONT

9h 58m

CLT

04/23/25

8:38am

IAD

American Airlines

04/29/25

6:18am

IAD

7h 31m

DFW

04/29/25

1:49pm

ONT

^$416

Free cancellation within 83 hours of booking

American Airlines

05/11/25

10:40pm

ONT

10h 48m

CLT

05/12/25

9:28am

DCA

American Airlines

05/12/25

5:49pm

DCA

5h 59m

JFK

05/12/25

11:48pm

ONT

^$427

Free cancellation within 83 hours of booking

Alaska Airlines

05/03/25

6:00am

ONT

14h 43m

SEA

05/03/25

8:43pm

IAD

Alaska Airlines

05/09/25

7:06am

IAD

13h 39m

SEA

SFO

05/09/25

8:45pm

ONT

^$446

Free cancellation within 83 hours of booking

Delta Air Lines

04/24/25

6:00am

ONT

16h

SLC

MSP

04/24/25

10:00pm

DCA

Delta Air Lines

04/29/25

6:59am

DCA

5h 23m

ATL

04/29/25

12:22pm

ONT

^$484

Free cancellation within 83 hours of booking

Alaska Airlines

04/19/25

6:00am

ONT

13h 34m

SEA

04/19/25

7:34pm

IAD

Alaska Airlines

05/14/25

6:30am

IAD

11h 23m

SEA

SJC

05/14/25

5:53pm

ONT

^$501

Free cancellation within 83 hours of booking

American Airlines

04/26/25

6:15am

ONT

14h 33m

PHX

DFW

04/26/25

8:48pm

DCA

American Airlines

04/30/25

10:00pm

DCA

13h 59m

ORD

PHX

05/01/25

11:59am

ONT

^$522

Free cancellation within 83 hours of booking

Delta Air Lines

05/11/25

10:00pm

ONT

11h 8m

ATL

05/12/25

9:08am

DCA

Delta Air Lines

05/12/25

7:02pm

DCA

4h 47m

MSP

05/12/25

11:49pm

ONT

^$549

Free cancellation within 83 hours of booking

United Airlines

04/30/25

7:05am

ONT

14h 25m

SFO

04/30/25

9:30pm

DCA

United Airlines

05/10/25

10:30am

DCA

10h 23m

ORD

DEN

05/10/25

8:53pm

ONT

^$701

Free cancellation within 83 hours of booking

United Airlines

04/30/25

7:05am

ONT

14h 36m

SFO

EWR

04/30/25

9:41pm

DCA

United Airlines

05/10/25

10:30am

DCA

10h 23m

ORD

DEN

05/10/25

8:53pm

ONT

^$706

Free cancellation within 83 hours of booking

Top Deals on flights from Ontario International Airport to Washington

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

Frontier Airlines

May 13

12:59am

ONT

11h 8m

DEN

May 13

12:07pm

DCA

as low as

$123

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

Delta Air Lines

May 9

10:00pm

ONT

11h 8m

ATL

May 10

9:08am

DCA

as low as

$158

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

Delta Air Lines

Apr 29

1:20pm

ONT

10h 11m

SLC

Apr 29

11:31pm

IAD

as low as

$158

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

Delta Air Lines

Apr 25

5:30pm

ONT

12h 50m

SEA

Apr 26

6:20am

IAD

as low as

$158

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

Alaska Airlines

May 16

7:20pm

ONT

12h 16m

SEA

May 17

7:36am

IAD

as low as

$158

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

Hawaiian Airlines

May 12

6:24pm

ONT

13h 19m

SEA

May 13

7:43am

IAD

as low as

$172

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

Frontier Airlines

May 8

6:35pm

ONT

11h 56m

LAS

May 9

6:31am

IAD

as low as

$183

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

American Airlines

Apr 23

7:25pm

ONT

11h 35m

PHX

Apr 24

7:00am

DCA

as low as

$208

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

American Airlines

May 11

10:40pm

ONT

10h 3m

CLT

May 12

8:43am

DCA

as low as

$208

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

American Airlines

May 7

6:15am

ONT

10h 2m

DFW

May 7

4:17pm

IAD

as low as

$208

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

American Airlines

May 11

6:01am

ONT

13h 58m

PHX

PHL

May 11

7:59pm

DCA

as low as

$213

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

American Airlines

Apr 27

11:59pm

ONT

13h 2m

DFW

LGA

Apr 28

1:01pm

DCA

as low as

$213

Flights to Washington

Return flights

Flights From Washington To Ontario International Airport

Browse origins

Flights
North America
United States
California
Los Angeles
Ontario International Airport

Browse destinations

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

Flights From Ontario International Airport To Reagan Washington National Airport Flights From Ontario International Airport To Washington Dulles Airport

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Flight Deals from Ontario International Airport to Washington from $123

Stops

Airlines

Cabin Class

Departure Airports

Arrival Airports

Layover Airports

Best Price. GUARANTEED.

Top Deals on flights from Ontario International Airport to Washington

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