$43 Flight Deals from Ontario International Airport to Portland

Hotels
Cars
Flights
Bundle + Save
Cruises
Experiences

Top flight deals from leading airlines:

... and +100s more

Incredible Deals

Save up to 50% on select flights with Priceline

Bundle & Save

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

Best Price Guarantee

If a VIP member finds a better price elsewhere, we'll refund up to 200% of the difference

Help 24/7

We’re always here for you - reach us 24 hours a day, 7 days a week

Stops

Nonstop

from $87

Up to 1 stop

$151

Airlines

Alaska Airlines

$151

American Airlines

$272

Delta Air Lines

$157

Frontier Airlines

$87

Hawaiian Airlines

$170

United Airlines

$218

Cabin Class

Economy

$87

Departure Airports

Ontario International Airport

$87

Arrival Airports

Portland International Airport

$87

Layover Airports

Denver International Airport

$170

Harry Reid International Airport

$206

Phoenix Sky Harbor International Airport

$272

Reno Tahoe International Airport

$225

Salt Lake City International Airport

$187

San Francisco International Airport

$151

Seattle Tacoma International Airport

$157

Best Price. GUARANTEED.

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

BUNDLE & SAVE

Book a flight & hotel together for extra savings.

On average save $240 per traveler

Frontier Airlines

05/29/25

2:19pm

ONT

2h 31m

Direct

05/29/25

4:50pm

PDX

Frontier Airlines

06/05/25

11:13am

PDX

2h 22m

Direct

06/05/25

1:35pm

ONT

^$87

Free cancellation within 83 hours of booking

Frontier Airlines

05/22/25

2:19pm

ONT

2h 31m

Direct

05/22/25

4:50pm

PDX

Frontier Airlines

05/25/25

11:04am

PDX

2h 20m

Direct

05/25/25

1:24pm

ONT

^$98

Free cancellation within 83 hours of booking

Frontier Airlines

06/06/25

2:30pm

ONT

2h 25m

Direct

06/06/25

4:55pm

PDX

Frontier Airlines

06/13/25

11:13am

PDX

2h 22m

Direct

06/13/25

1:35pm

ONT

^$114

Free cancellation within 83 hours of booking

Frontier Airlines

06/02/25

2:30pm

ONT

2h 25m

Direct

06/02/25

4:55pm

PDX

Frontier Airlines

06/09/25

11:13am

PDX

2h 22m

Direct

06/09/25

1:35pm

ONT

^$122

Free cancellation within 83 hours of booking

Alaska Airlines

05/17/25

10:00am

ONT

2h 22m

Direct

05/17/25

12:22pm

PDX

Alaska Airlines

06/11/25

7:21am

PDX

4h 24m

SFO

06/11/25

11:45am

ONT

^$151

Free cancellation within 83 hours of booking

Delta Air Lines

05/17/25

6:00am

ONT

4h 45m

SEA

05/17/25

10:45am

PDX

Delta Air Lines

05/21/25

11:25am

PDX

5h 40m

SEA

05/21/25

5:05pm

ONT

^$157

Free cancellation within 83 hours of booking

Hawaiian Airlines

05/14/25

7:00am

ONT

2h 26m

Direct

05/14/25

9:26am

PDX

Hawaiian Airlines

05/21/25

9:41pm

PDX

2h 16m

Direct

05/21/25

11:57pm

ONT

^$170

Free cancellation within 83 hours of booking

Frontier Airlines

06/07/25

12:59am

ONT

15h 46m

DEN

06/07/25

4:45pm

PDX

Frontier Airlines

06/08/25

11:13am

PDX

2h 22m

Direct

06/08/25

1:35pm

ONT

^$170

Free cancellation within 83 hours of booking

Delta Air Lines

05/19/25

2:55pm

ONT

5h 57m

SEA

05/19/25

8:52pm

PDX

Delta Air Lines

05/22/25

5:35am

PDX

7h 11m

SEA

05/22/25

12:46pm

ONT

^$177

Free cancellation within 83 hours of booking

Delta Air Lines

05/15/25

2:55pm

ONT

5h 57m

SEA

05/15/25

8:52pm

PDX

Delta Air Lines

05/22/25

5:35am

PDX

4h 33m

SEA

05/22/25

10:08am

ONT

^$177

Free cancellation within 83 hours of booking

Delta Air Lines

05/25/25

2:55pm

ONT

5h 57m

SEA

05/25/25

8:52pm

PDX

Delta Air Lines

05/29/25

6:40am

PDX

6h 6m

SEA

05/29/25

12:46pm

ONT

^$177

Free cancellation within 83 hours of booking

Hawaiian Airlines

05/20/25

6:00am

ONT

6h 18m

SEA

05/20/25

12:18pm

PDX

Hawaiian Airlines

05/27/25

9:41pm

PDX

2h 16m

Direct

05/27/25

11:57pm

ONT

^$187

Free cancellation within 83 hours of booking

Delta Air Lines

06/01/25

2:55pm

ONT

5h 57m

SEA

06/01/25

8:52pm

PDX

Delta Air Lines

06/07/25

5:30am

PDX

7h 35m

SLC

06/07/25

1:05pm

ONT

^$187

Free cancellation within 83 hours of booking

Frontier Airlines

05/23/25

5:21pm

ONT

6h 56m

DEN

05/24/25

12:17am

PDX

Frontier Airlines

06/08/25

11:13am

PDX

2h 22m

Direct

06/08/25

1:35pm

ONT

^$189

Free cancellation within 83 hours of booking

Frontier Airlines

06/02/25

2:30pm

ONT

2h 25m

Direct

06/02/25

4:55pm

PDX

Frontier Airlines

06/09/25

5:50pm

PDX

DEN

06/09/25

11:50pm

ONT

^$189

Free cancellation within 83 hours of booking

Alaska Airlines

05/15/25

6:00am

ONT

6h 18m

SEA

05/15/25

12:18pm

PDX

Alaska Airlines

06/01/25

7:40am

PDX

2h 31m

Direct

06/01/25

10:11am

ONT

^$191

Free cancellation within 83 hours of booking

Hawaiian Airlines

05/24/25

7:30am

ONT

2h 20m

Direct

05/24/25

9:50am

PDX

Hawaiian Airlines

05/27/25

7:21am

PDX

4h 24m

SFO

05/27/25

11:45am

ONT

^$202

Free cancellation within 83 hours of booking

Frontier Airlines

06/06/25

2:30pm

ONT

2h 25m

Direct

06/06/25

4:55pm

PDX

Frontier Airlines

06/13/25

1:45pm

PDX

7h 6m

LAS

06/13/25

8:51pm

ONT

^$206

Free cancellation within 83 hours of booking

Hawaiian Airlines

05/14/25

4:29pm

ONT

4h 27m

SEA

05/14/25

8:56pm

PDX

Hawaiian Airlines

05/21/25

9:41pm

PDX

2h 16m

Direct

05/21/25

11:57pm

ONT

^$217

Free cancellation within 83 hours of booking

Delta Air Lines

06/13/25

6:00am

ONT

6h 23m

SLC

06/13/25

12:23pm

PDX

Delta Air Lines

06/16/25

5:50pm

PDX

6h 20m

SEA

06/17/25

12:10am

ONT

^$217

Free cancellation within 83 hours of booking

United Airlines

06/03/25

6:00am

ONT

6h 22m

Direct

06/03/25

12:22pm

PDX

United Airlines

06/11/25

1:25pm

PDX

5h 57m

SFO

06/11/25

7:22pm

ONT

^$218

Free cancellation within 83 hours of booking

Alaska Airlines

05/22/25

7:20pm

ONT

14h 33m

SEA

05/23/25

9:53am

PDX

Alaska Airlines

05/27/25

7:05am

PDX

3h 40m

RNO

05/27/25

10:45am

ONT

^$225

Free cancellation within 83 hours of booking

United Airlines

05/31/25

6:41pm

ONT

5h 49m

SFO

06/01/25

12:30am

PDX

United Airlines

06/04/25

1:25pm

PDX

5h 57m

SFO

06/04/25

7:22pm

ONT

^$227

Free cancellation within 83 hours of booking

United Airlines

05/20/25

3:10pm

ONT

5h 43m

SFO

05/20/25

8:53pm

PDX

United Airlines

05/25/25

9:54am

PDX

5h 19m

SFO

05/25/25

3:13pm

ONT

^$228

Free cancellation within 83 hours of booking

Delta Air Lines

06/12/25

1:15pm

ONT

4h 57m

SLC

06/12/25

6:12pm

PDX

Delta Air Lines

06/17/25

7:15am

PDX

7h 58m

SEA

06/17/25

3:13pm

ONT

^$228

Free cancellation within 83 hours of booking

United Airlines

06/04/25

1:36pm

ONT

4h 59m

SFO

06/04/25

6:35pm

PDX

United Airlines

06/11/25

7:40am

PDX

4h 34m

SFO

06/11/25

12:14pm

ONT

^$228

Free cancellation within 83 hours of booking

Delta Air Lines

06/13/25

6:00am

ONT

6h 23m

SLC

06/13/25

12:23pm

PDX

Delta Air Lines

06/20/25

7:59pm

PDX

2h 42m

Direct

06/20/25

10:41pm

ONT

^$233

Free cancellation within 83 hours of booking

Alaska Airlines

05/15/25

6:00am

ONT

6h 18m

SEA

05/15/25

12:18pm

PDX

Alaska Airlines

06/01/25

1:25pm

PDX

7h 3m

SEA

06/01/25

8:28pm

ONT

^$247

Free cancellation within 83 hours of booking

American Airlines

06/04/25

7:25pm

ONT

4h 32m

PHX

06/04/25

11:57pm

PDX

American Airlines

06/11/25

5:15am

PDX

6h 45m

PHX

06/11/25

12:00pm

ONT

^$272

Free cancellation within 83 hours of booking

American Airlines

05/30/25

6:01am

ONT

4h 49m

PHX

05/30/25

10:50am

PDX

American Airlines

06/04/25

6:00am

PDX

2h 29m

Direct

06/04/25

8:29am

ONT

^$282

Free cancellation within 83 hours of booking

Top Deals on flights from Ontario International Airport to Portland

Los Angeles, US (LAX) - Portland, US (PDX)

Frontier Airlines

May 25

2:19pm

ONT

2h 31m

Direct

May 25

4:50pm

PDX

as low as

$43

Los Angeles, US (LAX) - Portland, US (PDX)

Alaska Airlines

May 28

5:55pm

ONT

2h 31m

Direct

May 28

8:26pm

PDX

as low as

$78

Los Angeles, US (LAX) - Portland, US (PDX)

American Airlines

May 10

6:01am

ONT

4h 49m

PHX

May 10

10:50am

PDX

as low as

$88

Los Angeles, US (LAX) - Portland, US (PDX)

Delta Air Lines

May 17

6:00am

ONT

4h 45m

SEA

May 17

10:45am

PDX

as low as

$88

Los Angeles, US (LAX) - Portland, US (PDX)

United Airlines

Jun 10

6:00am

ONT

6h 22m

Direct

Jun 10

12:22pm

PDX

as low as

$108

Los Angeles, US (LAX) - Portland, US (PDX)

United Airlines

Apr 23

6:00am

ONT

6h 39m

SFO

Apr 23

12:39pm

PDX

as low as

$114

Los Angeles, US (LAX) - Portland, US (PDX)

Hawaiian Airlines

May 24

7:30am

ONT

2h 20m

Direct

May 24

9:50am

PDX

as low as

$115

Los Angeles, US (LAX) - Portland, US (PDX)

Delta Air Lines

Jun 13

6:00am

ONT

6h 23m

SLC

Jun 13

12:23pm

PDX

as low as

$118

Los Angeles, US (LAX) - Portland, US (PDX)

Frontier Airlines

Jun 17

5:21pm

ONT

6h 58m

DEN

Jun 18

12:19am

PDX

as low as

$125

Los Angeles, US (LAX) - Portland, US (PDX)

Hahn Air

May 17

7:30am

ONT

2h 20m

Direct

May 17

9:50am

PDX

as low as

$139

Los Angeles, US (LAX) - Portland, US (PDX)

Frontier Airlines

Jun 26

6:00am

ONT

6h 55m

LAS

Jun 26

12:55pm

PDX

as low as

$144

Los Angeles, US (LAX) - Portland, US (PDX)

Southwest Airlines

Apr 9

6:00pm

ONT

4h 15m

OAK

Apr 9

10:15pm

PDX

as low as

$209

Flights to Portland

Return flights

Flights From Portland To Ontario International Airport

Browse origins

Flights
North America
United States
California
Los Angeles
Ontario International Airport

Browse destinations

Flights
North America
United States
Oregon
Portland

Priceline is part of Booking Holdings, the world leader in online travel & related services.

Flight Deals from Ontario International Airport to Portland from $43

Stops

Airlines

Cabin Class

Departure Airports

Arrival Airports

Layover Airports

Best Price. GUARANTEED.

Top Deals on flights from Ontario International Airport to Portland

Flights to Portland

Return flights

Browse origins

Browse destinations

Top Flight Routes Destinations