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Flight Deals from Newark Liberty Airport to Ontario International Airport from $138

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Stops

Nonstop
from $357
Up to 1 stop
$267
Up to 2 stops
$282

Airlines

Alaska Airlines
$277
American Airlines
$412
Delta Air Lines
$267
Hawaiian Airlines
$340
United Airlines
$357

Cabin Class

Economy
$267

Departure Airports

Newark Liberty Airport
$267

Arrival Airports

Ontario International Airport
$267

Layover Airports

Cincinnati Northern Kentucky International Airport
$317
Dallas Fort Worth International Airport
$1462
Denver International Airport
$466
Detroit Metropolitan Airport
$317
Hartsfield Jackson Atlanta International Airport
$267
Minneapolis-St Paul International/Wold-Chamberlain Airport
$282
Phoenix Sky Harbor International Airport
$412
Portland International Airport
$277
Salt Lake City International Airport
$282
San Francisco International Airport
$277
Seattle Tacoma International Airport
$267

Best Price. GUARANTEED.

Exclusively for Priceline Members
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On average save $240 per traveler
Delta Air Lines Logo
Delta Air Lines

09/03/25

5:30pm
EWR
4h 59m
ATL

09/03/25

10:29pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/17/25

10:45am
ONT
13h 12m
SEA

09/17/25

11:57pm
EWR
$267
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/13/25

5:30pm
EWR
5h 11m
ATL

09/13/25

10:41pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/16/25

12:15pm
ONT
8h 32m
Direct

09/16/25

8:47pm
EWR
$267
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/13/25

5:30pm
EWR
5h 11m
ATL

09/13/25

10:41pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/16/25

12:00pm
ONT
11h 43m
ATL

09/16/25

11:43pm
EWR
$267
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/03/25

5:30pm
EWR
4h 59m
ATL

09/03/25

10:29pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/17/25

12:15pm
ONT
8h 32m
Direct

09/17/25

8:47pm
EWR
$267
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/04/25

5:30pm
EWR
4h 59m
ATL

09/04/25

10:29pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/17/25

12:00pm
ONT
12h 52m
ATL

09/18/25

12:52am
EWR
$277
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

09/04/25

5:48pm
EWR
6h 11m
PDX

09/04/25

11:59pm
ONT
Alaska Airlines Logo
Alaska Airlines

09/17/25

8:30am
ONT
13h 41m
SFO

09/17/25

10:11pm
EWR
$277
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/04/25

5:30pm
EWR
4h 59m
ATL

09/04/25

10:29pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/13/25

12:15pm
ONT
8h 32m
Direct

09/13/25

8:47pm
EWR
$277
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

08/31/25

6:00am
EWR
6h 23m
MSP
SLC

08/31/25

12:23pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/05/25

12:00pm
ONT
11h 54m
ATL

09/05/25

11:54pm
EWR
$282
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

09/12/25

5:48pm
EWR
6h 11m
PDX

09/12/25

11:59pm
ONT
Alaska Airlines Logo
Alaska Airlines

09/21/25

9:26pm
ONT
8h 33m
Direct

09/22/25

5:59am
EWR
$316
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/05/25

2:59pm
EWR
7h 30m
CVG
ATL

09/05/25

10:29pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/08/25

10:59pm
ONT
10h 37m
ATL

09/09/25

9:36am
EWR
$317
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/05/25

6:55pm
EWR
4h 48m
SLC

09/05/25

11:43pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/08/25

11:05am
ONT
8h 34m
Direct

09/08/25

7:39pm
EWR
$317
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

08/31/25

6:00am
EWR
6h 23m
MSP
SLC

08/31/25

12:23pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/06/25

7:00am
ONT
16h 4m
ATL
DTW

09/06/25

11:04pm
EWR
$317
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

09/01/25

7:19am
EWR
6h 47m
SEA

09/01/25

2:06pm
ONT
Alaska Airlines Logo
Alaska Airlines

09/20/25

7:49pm
ONT
11h 10m
SFO

09/21/25

6:59am
EWR
$331
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

09/03/25

5:48pm
EWR
6h 11m
PDX

09/03/25

11:59pm
ONT
Hawaiian Airlines Logo
Hawaiian Airlines

09/17/25

8:30am
ONT
13h 41m
SFO

09/17/25

10:11pm
EWR
$340
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/04/25

2:59pm
EWR
7h 30m
CVG
ATL

09/04/25

10:29pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/10/25

12:00pm
ONT
12h 52m
ATL

09/11/25

12:52am
EWR
$343
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

09/05/25

5:48pm
EWR
6h 11m
PDX

09/05/25

11:59pm
ONT
Hawaiian Airlines Logo
Hawaiian Airlines

09/08/25

3:00pm
ONT
14h 59m
SEA

09/09/25

5:59am
EWR
$348
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

09/06/25

3:30pm
EWR
6h 56m
Direct

09/06/25

10:26pm
ONT
United Airlines Logo
United Airlines

09/13/25

7:00am
ONT
8h 32m
Direct

09/13/25

3:32pm
EWR
$357
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

09/21/25

7:19am
EWR
6h 47m
SEA

09/21/25

2:06pm
ONT
Alaska Airlines Logo
Alaska Airlines

09/23/25

3:04pm
ONT
14h 55m
SEA

09/24/25

5:59am
EWR
$362
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

09/24/25

7:24am
EWR
7h 27m
PHX

09/24/25

2:51pm
ONT
American Airlines Logo
American Airlines

09/28/25

7:44pm
ONT
9h 44m
PHX

09/29/25

5:28am
EWR
$412
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

09/28/25

7:19am
EWR
6h 47m
SEA

09/28/25

2:06pm
ONT
Alaska Airlines Logo
Alaska Airlines

09/28/25

4:18pm
ONT
15h 2m
SEA

09/29/25

7:20am
EWR
$448
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

09/21/25

10:00am
EWR
7h 29m
DEN

09/21/25

5:29pm
ONT
United Airlines Logo
United Airlines

09/24/25

6:00am
ONT
8h 25m
Direct

09/24/25

2:25pm
EWR
$466
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/26/25

2:59pm
EWR
8h 47m
CVG
SLC

09/26/25

11:46pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/28/25

10:59pm
ONT
15h 27m
ATL
CVG

09/29/25

2:26pm
EWR
$528
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

09/01/25

7:19am
EWR
6h 47m
SEA

09/01/25

2:06pm
ONT
Alaska Airlines Logo
Alaska Airlines

09/07/25

10:59pm
ONT
15h 4m
ATL
DTW

09/08/25

2:03pm
EWR
$583
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/17/25

6:00am
EWR
5h 24m
ATL

09/17/25

11:24am
ONT
Delta Air Lines Logo
Delta Air Lines

09/28/25

7:05am
ONT
12h 45m
SLC
MSP

09/28/25

7:50pm
EWR
$633
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

09/21/25

5:48pm
EWR
6h 11m
PDX

09/21/25

11:59pm
ONT
Hawaiian Airlines Logo
Hawaiian Airlines

09/25/25

10:33am
ONT
11h 38m
SFO

09/25/25

10:11pm
EWR
$649
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/07/25

6:00am
EWR
6h 23m
MSP
SLC

09/07/25

12:23pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/14/25

10:59pm
ONT
10h 46m
ATL

09/15/25

9:45am
EWR
$673
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/01/25

11:50am
EWR
10h 39m
MSP
ATL

09/01/25

10:29pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/06/25

7:05am
ONT
12h 45m
SLC
MSP

09/06/25

7:50pm
EWR
$685
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

09/07/25

6:00am
EWR
6h 23m
MSP
SLC

09/07/25

12:23pm
ONT
Delta Air Lines Logo
Delta Air Lines

09/14/25

7:05am
ONT
12h 45m
SLC
MSP

09/14/25

7:50pm
EWR
$908
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

09/07/25

12:36pm
EWR
6h 53m
ATL

09/07/25

7:29pm
ONT
United Airlines Logo
United Airlines

09/14/25

9:00am
ONT
8h 33m
Direct

09/14/25

5:33pm
EWR
$1161
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

09/24/25

6:30am
EWR
4h 52m
DFW

09/24/25

11:22am
ONT
American Airlines Logo
American Airlines

09/28/25

6:55am
ONT
8h 33m
Direct

09/28/25

3:28pm
EWR
$1462
Free cancellation within 83 hours of booking

Top Deals on flights from Newark Liberty Airport to Ontario International Airport

New York City, US (NYC) - Los Angeles, US (LAX)

Delta Air Lines Logo
Delta Air Lines

Sep 16

6:55pm
EWR
4h 51m
SLC

Sep 16

11:46pm
ONT

as low as

$138

New York City, US (NYC) - Los Angeles, US (LAX)

Alaska Airlines Logo
Alaska Airlines

Sep 30

5:48pm
EWR
6h 11m
PDX

Sep 30

11:59pm
ONT

as low as

$138

New York City, US (NYC) - Los Angeles, US (LAX)

Alaska Airlines Logo
Alaska Airlines

Sep 16

7:19am
EWR
6h 47m
SEA

Sep 16

2:06pm
ONT

as low as

$148

New York City, US (NYC) - Los Angeles, US (LAX)

Delta Air Lines Logo
Delta Air Lines

Sep 4

4:00pm
EWR
6h 29m
ATL

Sep 4

10:29pm
ONT

as low as

$148

New York City, US (NYC) - Los Angeles, US (LAX)

Hawaiian Airlines Logo
Hawaiian Airlines

Sep 30

5:48pm
EWR
6h 11m
PDX

Sep 30

11:59pm
ONT

as low as

$152

New York City, US (NYC) - Los Angeles, US (LAX)

Delta Air Lines Logo
Delta Air Lines

Aug 6

2:59pm
EWR
7h 30m
CVG
ATL

Aug 6

10:29pm
ONT

as low as

$153

New York City, US (NYC) - Los Angeles, US (LAX)

United Airlines Logo
United Airlines

Sep 30

3:30pm
EWR
6h 56m
Direct

Sep 30

10:26pm
ONT

as low as

$178

New York City, US (NYC) - Los Angeles, US (LAX)

Delta Air Lines Logo
Delta Air Lines

Dec 12

5:00pm
EWR
6h 46m
DTW
SLC

Dec 12

11:46pm
ONT

as low as

$179

New York City, US (NYC) - Los Angeles, US (LAX)

American Airlines Logo
American Airlines

Oct 8

6:02am
EWR
7h 34m
DFW

Oct 8

1:36pm
ONT

as low as

$183

New York City, US (NYC) - Los Angeles, US (LAX)

United Airlines Logo
United Airlines

Aug 31

12:30pm
EWR
4h 59m
DEN

Aug 31

5:29pm
ONT

as low as

$183

New York City, US (NYC) - Los Angeles, US (LAX)

American Airlines Logo
American Airlines

Aug 26

5:34pm
EWR
4h 1m
PHX

Aug 26

9:35pm
ONT

as low as

$198

New York City, US (NYC) - Los Angeles, US (LAX)

United Airlines Logo
United Airlines

Sep 29

5:00pm
EWR
5h 26m
ORD

Sep 29

10:26pm
ONT

as low as

$198
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