$123 Flight Deals from Ontario International Airport to Chicago O Hare Airport

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Save up to 50% on select flights with Priceline

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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

$217

Up to 2 stops

$261

Airlines

Alaska Airlines

$217

American Airlines

$316

Delta Air Lines

$247

Frontier Airlines

$247

Hawaiian Airlines

$259

United Airlines

$336

Cabin Class

Economy

$217

Departure Airports

Ontario International Airport

$217

Arrival Airports

Chicago O Hare Airport

$217

Layover Airports

Dallas Fort Worth International Airport

$254

Denver International Airport

$247

Detroit Metropolitan Airport

$261

George Bush Intercontinental Houston Airport

$279

Harry Reid International Airport

$247

Hartsfield Jackson Atlanta International Airport

$247

Phoenix Sky Harbor International Airport

$316

Portland International Airport

$268

Salt Lake City International Airport

$247

San Francisco International Airport

$336

Seattle Tacoma International Airport

$217

Best Price. GUARANTEED.

Exclusively for Priceline Members
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On average save $240 per traveler

Alaska Airlines

05/05/25

6:24pm

ONT

11h 41m

SEA

05/06/25

6:05am

ORD

Alaska Airlines

05/06/25

9:00am

ORD

7h 45m

SEA

05/06/25

4:45pm

ONT

^$217

Free cancellation within 83 hours of booking

Alaska Airlines

05/02/25

6:24pm

ONT

11h 41m

SEA

05/03/25

6:05am

ORD

Alaska Airlines

05/06/25

9:00am

ORD

7h 45m

SEA

05/06/25

4:45pm

ONT

^$223

Free cancellation within 83 hours of booking

Alaska Airlines

05/01/25

6:00am

ONT

12h 1m

SEA

05/01/25

6:01pm

ORD

Alaska Airlines

05/07/25

6:00am

ORD

8h 46m

SEA

05/07/25

2:46pm

ONT

^$223

Free cancellation within 83 hours of booking

Delta Air Lines

05/04/25

2:35pm

ONT

9h 24m

SEA

05/04/25

11:59pm

ORD

Delta Air Lines

05/07/25

7:30am

ORD

4h 38m

SLC

05/07/25

12:08pm

ONT

^$247

Free cancellation within 83 hours of booking

Delta Air Lines

05/07/25

11:44am

ONT

12h 15m

SEA

05/07/25

11:59pm

ORD

Delta Air Lines

05/10/25

7:30am

ORD

5h 35m

SLC

05/10/25

1:05pm

ONT

^$247

Free cancellation within 83 hours of booking

Delta Air Lines

05/05/25

5:15pm

ONT

7h 38m

SLC

05/06/25

12:53am

ORD

Delta Air Lines

05/09/25

6:00am

ORD

5h 50m

ATL

05/09/25

11:50am

ONT

^$247

Free cancellation within 83 hours of booking

Frontier Airlines

05/01/25

6:35pm

ONT

10h 35m

LAS

05/02/25

5:10am

ORD

Frontier Airlines

05/08/25

8:03pm

ORD

3h 56m

DEN

05/08/25

11:59pm

ONT

^$247

Free cancellation within 83 hours of booking

Delta Air Lines

05/02/25

10:15pm

ONT

10h 26m

ATL

05/03/25

8:41am

ORD

Delta Air Lines

05/06/25

7:50am

ORD

6h 54m

SEA

05/06/25

2:44pm

ONT

^$247

Free cancellation within 83 hours of booking

Delta Air Lines

05/08/25

11:44am

ONT

12h 15m

SEA

05/08/25

11:59pm

ORD

Delta Air Lines

05/09/25

6:00am

ORD

5h 50m

ATL

05/09/25

11:50am

ONT

^$247

Free cancellation within 83 hours of booking

Frontier Airlines

04/17/25

4:15pm

ONT

7h 55m

DEN

04/18/25

12:10am

ORD

Frontier Airlines

04/21/25

5:01am

ORD

12h 2m

DFW

04/21/25

5:03pm

ONT

^$254

Free cancellation within 83 hours of booking

Frontier Airlines

04/20/25

4:25pm

ONT

7h 45m

DEN

04/21/25

12:10am

ORD

Frontier Airlines

04/28/25

8:01pm

ORD

3h 58m

DEN

04/28/25

11:59pm

ONT

^$257

Free cancellation within 83 hours of booking

Hawaiian Airlines

05/02/25

6:24pm

ONT

11h 41m

SEA

05/03/25

6:05am

ORD

Hawaiian Airlines

05/03/25

9:00am

ORD

6h 28m

SEA

05/03/25

3:28pm

ONT

^$259

Free cancellation within 83 hours of booking

Delta Air Lines

05/01/25

2:35pm

ONT

9h 24m

SEA

05/01/25

11:59pm

ORD

Delta Air Lines

05/05/25

5:05pm

ORD

6h 36m

DTW

SLC

05/05/25

11:41pm

ONT

^$261

Free cancellation within 83 hours of booking

Hawaiian Airlines

05/01/25

6:00am

ONT

12h 1m

SEA

05/01/25

6:01pm

ORD

Hawaiian Airlines

05/05/25

3:44pm

ORD

6h 46m

SEA

05/05/25

10:30pm

ONT

^$265

Free cancellation within 83 hours of booking

Alaska Airlines

05/08/25

6:24pm

ONT

11h 41m

SEA

05/09/25

6:05am

ORD

Alaska Airlines

05/10/25

2:07pm

ORD

5h 58m

PDX

05/10/25

8:05pm

ONT

^$268

Free cancellation within 83 hours of booking

Frontier Airlines

04/10/25

4:15pm

ONT

7h 55m

DEN

04/11/25

12:10am

ORD

Frontier Airlines

04/15/25

9:55am

ORD

8h 1m

DFW

04/15/25

5:56pm

ONT

^$277

Free cancellation within 83 hours of booking

Frontier Airlines

04/10/25

4:15pm

ONT

7h 55m

DEN

04/11/25

12:10am

ORD

Frontier Airlines

04/13/25

6:30am

ORD

7h 27m

IAH

04/13/25

1:57pm

ONT

^$279

Free cancellation within 83 hours of booking

Frontier Airlines

04/09/25

11:23am

ONT

10h 44m

DFW

04/09/25

10:07pm

ORD

Frontier Airlines

04/13/25

6:30am

ORD

7h 27m

IAH

04/13/25

1:57pm

ONT

^$279

Free cancellation within 83 hours of booking

Hawaiian Airlines

04/26/25

6:00am

ONT

11h

SEA

04/26/25

5:00pm

ORD

Hawaiian Airlines

05/03/25

2:07pm

ORD

8h 21m

PDX

05/03/25

10:28pm

ONT

^$300

Free cancellation within 83 hours of booking

American Airlines

05/04/25

7:25pm

ONT

9h 48m

PHX

05/05/25

5:13am

ORD

American Airlines

05/07/25

7:13pm

ORD

2h 39m

Direct

05/07/25

9:52pm

ONT

^$316

Free cancellation within 83 hours of booking

Hawaiian Airlines

05/05/25

6:24pm

ONT

11h 41m

SEA

05/06/25

6:05am

ORD

Hawaiian Airlines

05/08/25

2:07pm

ORD

8h 21m

PDX

05/08/25

10:28pm

ONT

^$330

Free cancellation within 83 hours of booking

American Airlines

04/24/25

10:00am

ONT

7h 45m

PHX

04/24/25

5:45pm

ORD

American Airlines

05/10/25

5:00am

ORD

4h 50m

DFW

05/10/25

9:50am

ONT

^$332

Free cancellation within 83 hours of booking

United Airlines

05/03/25

1:20pm

ONT

7h 57m

DEN

05/03/25

9:17pm

ORD

United Airlines

05/10/25

12:45pm

ORD

7h 49m

SFO

05/10/25

8:34pm

ONT

^$336

Free cancellation within 83 hours of booking

American Airlines

05/03/25

10:54am

ONT

10h 21m

DFW

05/03/25

9:15pm

ORD

American Airlines

05/10/25

5:00am

ORD

4h 50m

DFW

05/10/25

9:50am

ONT

^$336

Free cancellation within 83 hours of booking

Delta Air Lines

04/24/25

12:07pm

ONT

11h 52m

ATL

04/24/25

11:59pm

ORD

Delta Air Lines

04/28/25

3:02pm

ORD

6h 49m

DTW

SLC

04/28/25

9:51pm

ONT

^$345

Free cancellation within 83 hours of booking

Delta Air Lines

05/01/25

10:15pm

ONT

11h 6m

ATL

DTW

05/02/25

9:21am

ORD

Delta Air Lines

05/05/25

1:25pm

ORD

10h 16m

DTW

SLC

05/05/25

11:41pm

ONT

^$347

Free cancellation within 83 hours of booking

United Airlines

04/24/25

4:17pm

ONT

8h 18m

DEN

04/25/25

12:35am

ORD

United Airlines

04/27/25

7:00am

ORD

2h 36m

Direct

04/27/25

9:36am

ONT

^$349

Free cancellation within 83 hours of booking

American Airlines

05/01/25

4:35pm

ONT

8h 5m

PHX

05/02/25

12:40am

ORD

American Airlines

05/04/25

7:10am

ORD

4h 49m

PHX

05/04/25

11:59am

ONT

^$372

Free cancellation within 83 hours of booking

Alaska Airlines

04/27/25

6:00am

ONT

12h 1m

SEA

04/27/25

6:01pm

ORD

Alaska Airlines

04/30/25

6:00am

ORD

12h 5m

SEA

SFO

04/30/25

6:05pm

ONT

^$376

Free cancellation within 83 hours of booking

American Airlines

05/04/25

7:25pm

ONT

9h 48m

PHX

05/05/25

5:13am

ORD

American Airlines

05/09/25

9:00pm

ORD

10h 48m

SFO

05/10/25

7:48am

ONT

^$401

Free cancellation within 83 hours of booking

Top Deals on flights from Ontario International Airport to Chicago O Hare Airport

Los Angeles, US (LAX) - Chicago, US (CHI)

Alaska Airlines

May 8

6:00am

ONT

12h 1m

SEA

May 8

6:01pm

ORD

as low as

$123

Los Angeles, US (LAX) - Chicago, US (CHI)

Virgin Atlantic

May 13

10:01am

ONT

8h 19m

SLC

May 13

6:20pm

ORD

as low as

$128

Los Angeles, US (LAX) - Chicago, US (CHI)

Delta Air Lines

May 16

10:00pm

ONT

10h 35m

ATL

May 17

8:35am

ORD

as low as

$128

Los Angeles, US (LAX) - Chicago, US (CHI)

Frontier Airlines

Apr 24

7:30pm

ONT

15h 6m

DFW

Apr 25

10:36am

ORD

as low as

$129

Los Angeles, US (LAX) - Chicago, US (CHI)

Frontier Airlines

Apr 18

4:25pm

ONT

8h 12m

DEN

Apr 19

12:37am

ORD

as low as

$133

Los Angeles, US (LAX) - Chicago, US (CHI)

Hawaiian Airlines

May 9

6:24pm

ONT

11h 41m

SEA

May 10

6:05am

ORD

as low as

$137

Los Angeles, US (LAX) - Chicago, US (CHI)

Delta Air Lines

May 12

7:05am

ONT

12h 17m

ATL

MSP

May 12

7:22pm

ORD

as low as

$143

Los Angeles, US (LAX) - Chicago, US (CHI)

United Airlines

May 11

5:05am

ONT

8h 10m

DEN

May 11

1:15pm

ORD

as low as

$168

Los Angeles, US (LAX) - Chicago, US (CHI)

American Airlines

May 9

10:40pm

ONT

10h 21m

CLT

May 10

9:01am

ORD

as low as

$168

Los Angeles, US (LAX) - Chicago, US (CHI)

American Airlines

May 6

7:25pm

ONT

9h 48m

PHX

May 7

5:13am

ORD

as low as

$168

Los Angeles, US (LAX) - Chicago, US (CHI)

United Airlines

May 6

1:45pm

ONT

9h 42m

SFO

May 6

11:27pm

ORD

as low as

$208

Los Angeles, US (LAX) - Chicago, US (CHI)

Delta Air Lines

Apr 28

10:15pm

ONT

11h 6m

ATL

DTW

Apr 29

9:21am

ORD

as low as

$214

Flights to Chicago

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Flights From Chicago O Hare Airport To Ontario International Airport

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Chicago O Hare Airport

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Flight Deals from Ontario International Airport to Chicago O Hare Airport from $123

Stops

Airlines

Cabin Class

Departure Airports

Arrival Airports

Layover Airports

Best Price. GUARANTEED.

Top Deals on flights from Ontario International Airport to Chicago O Hare Airport

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