HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Oregon

$92+ Cheap flights from Ontario (ONT) to Oregon

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PDX
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Oregon with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Oregon

Keep the following information in mind while searching for Ontario to Oregon flight deals. Data was last updated April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$147
(Cheapflightsfares)

One-way from

$92
(Frontier)

Popular in

November

Cheapest in

January

Average price

$187

Good round-trip deal

$178 or less

Good one-way deal

$98 or less
Provider with most accurate pricing for Los Angeles-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Portland flights.
Search Deals
From Ontario to Oregon
Search Deals
One-way flight from Ontario to Oregon
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip flight from Ontario to Oregon.
Search Deals
Price to beat on a one-way flight from Ontario to Oregon.
Search Deals

Find flight deals from Ontario to Oregon

Cheapest flights from Ontario to Oregon
Explore the most affordable flight options available from Ontario to Oregon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/122:30 pmONT - PDX
Nonstop2h 25mFrontier
Mon 6/1611:13 amPDX - ONT
Nonstop2h 22mFrontier
Deal found 4/17$147
This Expedia deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/156:00 amONT - PDX
1 stop6h 18mMultiple Airlines
Thu 5/2211:04 amPDX - ONT
Nonstop2h 20mMultiple Airlines
Deal found 4/17$162
This Alaska Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/77:00 amONT - PDX
Nonstop2h 26mAlaska Airlines
Wed 5/79:42 pmPDX - ONT
Nonstop2h 16mAlaska Airlines
Deal found 4/16$177
This Hawaiian Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/144:29 pmONT - PDX
1 stop4h 27mHawaiian Airlines
Wed 5/219:41 pmPDX - ONT
Nonstop2h 16mHawaiian Airlines
Deal found 4/15$187
This Southwest deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/197:20 pmONT - PDX
1 stop5h 15mSouthwest
Wed 5/216:45 amPDX - ONT
1 stop3h 25mSouthwest
Deal found 4/17$192
This Delta deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/811:44 amONT - PDX
1 stop5h 15mDelta
Mon 5/125:00 pmPDX - ONT
1 stop6h 42mDelta
Deal found 4/17$197
This Expedia deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/176:00 amONT - BOI
1 stop7h 05mMultiple Airlines
Tue 5/202:27 pmBOI - ONT
1 stop10h 32mMultiple Airlines
Deal found 4/15$216
This CheapOair deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1712:59 amONT - BOI
1 stop11h 38mFrontier
Sun 5/2512:36 pmBOI - ONT
1 stop12h 15mFrontier
Deal found 4/16$227
This Alaska Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/74:29 pmONT - BOI
1 stop5h 10mAlaska Airlines
Tue 5/134:20 pmBOI - ONT
1 stop5h 09mAlaska Airlines
Deal found 4/16$232
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/106:00 amONT - BOI
1 stop6h 10mDelta
Sat 5/105:40 pmBOI - ONT
1 stop5h 36mDelta
Deal found 4/16$233
This Hawaiian Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/146:00 amONT - MFR
1 stop5h 10mHawaiian Airlines
Mon 5/195:48 pmMFR - ONT
1 stop4h 58mHawaiian Airlines
Deal found 4/17$240
This Hawaiian Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/94:29 pmONT - BOI
1 stop6h 21mHawaiian Airlines
Sat 5/176:37 amBOI - ONT
1 stop5h 20mHawaiian Airlines
Deal found 4/16$242

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Oregon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
Use the filters below to find and compare flights from Ontario to Oregon that are best for you.

Fly from

Ontario

Fly to

Oregon

Route

Depart

Return

Price

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Thu 6/12

2:30 pm-4:55 pm

Nonstop2h 25m

Portland

Mon 6/16

11:13 am-1:35 pm

Nonstop2h 22m

$147

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Thu 5/15

6:00 am-12:18 pm

1 stop6h 18m

Portland

Thu 5/22

11:04 am-1:24 pm

Nonstop2h 20m

$162

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Wed 5/7

7:00 am-9:26 am

Nonstop2h 26m

Portland

Wed 5/7

9:42 pm-11:58 pm

Nonstop2h 16m

$177

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Wed 5/14

4:29 pm-8:56 pm

1 stop4h 27m

Portland

Wed 5/21

9:41 pm-11:57 pm

Nonstop2h 16m

$187

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Mon 5/19

7:20 pm-12:35 am

1 stop5h 15m

Portland

Wed 5/21

6:45 am-10:10 am

1 stop3h 25m

$192

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 5/17

6:00 am-2:05 pm

1 stop7h 05m

Boise Air Term. Gowen Fld

Tue 5/20

2:27 pm-11:59 pm

1 stop10h 32m

$216

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Thu 5/29

7:05 pm-12:10 am

1 stop5h 05m

Portland

Mon 6/2

11:25 am-6:20 pm

1 stop6h 55m

$217

OntarioMedford

ONT - MFR

ONTMFR

Ontario

Thu 5/29

2:55 pm-11:09 pm

1 stop8h 14m

Medford

Mon 6/2

5:10 pm-10:35 pm

1 stop5h 25m

$221

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 5/17

12:59 am-1:37 pm

1 stop11h 38m

Boise Air Term. Gowen Fld

Sun 5/25

12:36 pm-11:51 pm

1 stop12h 15m

$227

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 5/7

4:29 pm-10:39 pm

1 stop5h 10m

Boise Air Term. Gowen Fld

Sat 5/10

4:26 pm-8:29 pm

1 stop5h 03m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Ontario to Oregon

Have a flexible travel schedule? Discover the best time to fly to Oregon from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Oregon

What is the cheapest month to book a flight from Ontario to Oregon?

Currently, November is the cheapest month in which you can book a flight from Ontario to Oregon (average of $277). Flying from Ontario to Oregon in March is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to OR?

Find hourly flight availability from Ontario to Oregon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Oregon as you normally would.

Rainfall in Oregon by month

Plan your trip to Oregon by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Oregon ranges from 0.7 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Oregon when rainfall is around 0.7 in.

Temperature in Oregon by month

Plan your trip to Oregon by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Oregon, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Oregon

Get insights into the airlines that provide service to Oregon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Oregon. Reviews last updated April 17, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Ontario to Oregon to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,882 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,382 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Ontario to Oregon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Oregon?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Oregon.

  • How popular is this Ontario to Oregon flight route?

    The Ontario to Oregon flight path was viewed by 104 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from Ontario to Oregon one-way?

    $92 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Alaska Airlines and Delta, with prices starting from $98 and $99, respectively.

  • What are the most popular routes from Ontario to Oregon?

    Most travelers choose Ontario - Portland, Ontario - Boise Air Term. Gowen Fld or Ontario - Eugene when deciding on the best route from Ontario to Oregon.

  • What are the most reliable airlines from Ontario to Oregon?

    Consider SkyWest Airlines (97%), Hawaiian Airlines (96%) or Alaska Airlines (95%) when booking your flight. These represent the most reliable airlines when flying from Ontario to Oregon.

  • What are the cheapest flights from Ontario to Oregon?

    On average you can expect to pay $397 for a flight from Ontario to Oregon. The cheapest flight overall is $44 while the most popular route, (Ontario - Portland) is currently priced at $86.

  • Can I find deals for flights from Ontario to Oregon that include hotel bookings?

    Yes. In addition to deals on Ontario to Oregon flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Oregon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Oregon.

  • Can I find deals for business class flights from Ontario to Oregon?

    Yes. Cheapflights offers flight deals from Ontario to Oregon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Oregon?

    Currently, November is the cheapest month in which you can book a flight from Ontario to Oregon (average of $277). Flying from Ontario to Oregon in March is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Oregon

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to John F Kennedy Intl flights
Los Angeles to John F Kennedy Intl flights
Los Angeles to Newark flights
Los Angeles to Honolulu flights
Los Angeles to Boston flights
Los Angeles to Seattle flights
San Francisco to Newark flights
Los Angeles to LaGuardia flights
San Jose to Los Angeles flights
Los Angeles to Las Vegas flights
San Francisco to Los Angeles flights
Santa Ana to Las Vegas flights
Los Angeles to Miami flights
San Francisco to Seattle flights
San Francisco to Las Vegas flights
Los Angeles to San Jose flights
San Francisco to LaGuardia flights
Burbank to Las Vegas flights
Ontario to John F Kennedy Intl flights
Los Angeles to San Francisco flights
Los Angeles to Orlando flights
Oakland to Los Angeles flights
San Francisco to O'Hare Intl flights
Los Angeles to Reagan-National flights
Los Angeles to Oakland flights
Santa Ana to Seattle flights
Los Angeles to Dulles Intl flights
Los Angeles to Portland flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to O'Hare Intl flights
Oakland to Las Vegas flights
San Francisco to Ontario flights
San Francisco to Dallas/Fort Worth flights
Oakland to Seattle flights
Burbank to Newark flights
San Francisco to Boston flights
San Francisco to Honolulu flights
San Diego to Seattle flights
Oakland to Santa Ana flights
San Francisco to Dulles Intl flights
Santa Ana to Oakland flights
Ontario to Seattle flights
Santa Ana to San Francisco flights
San Jose to Las Vegas flights
San Jose to Seattle flights
Ontario to Newark flights
Ontario to San Francisco flights
San Francisco to Santa Ana flights
Los Angeles to Fort Lauderdale flights
San Diego to John F Kennedy Intl flights

Top 9 airlines flying from Ontario to Oregon

Discover the top 9 airlines that operate flights from Ontario to Oregon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$48Average$96FlexibilityNo cancel feeOn-time65%
FrontierCheapest$56Average$124FlexibilityNo cancel feeOn-time62%
DeltaCheapest$137Average$335FlexibilityNo cancel feeOn-timeN/A
Avelo AirlinesCheapest$142Average$180FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$156Average$348FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$164Average$303FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$172Average$347FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$190Average$383FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$246Average$322FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.