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$79+ 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 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PDX
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$176
(Cheapflightsfares)

One-way from

$79
(Cheapflightsfares)

Popular in

November

Cheapest in

January

Average price

$232

Good round-trip deal

$168 or less

Good one-way deal

$122 or less
Provider with most accurate pricing for Los Angeles-Portland flight deals.
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From Ontario to Oregon
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One-way flight from Ontario to Oregon
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Highest demand for flights based on searches. 4% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Ontario to Oregon.
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Price to beat on a one-way flight from Ontario to Oregon.
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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 March 28, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/26. 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.
Fri 5/232:19 pmONT - PDX
Nonstop2h 31mFrontier
Mon 5/2611:04 amPDX - ONT
Nonstop2h 20mFrontier
Deal found 3/26$176
This Alaska Airlines deal was found by Cheapflights users on 3/28. 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.
Tue 4/228:59 pmONT - PDX
Nonstop2h 21mAlaska Airlines
Tue 4/299:42 pmPDX - ONT
Nonstop2h 16mAlaska Airlines
Deal found 3/28$177
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/307:00 amONT - PDX
Nonstop2h 26mHawaiian Airlines
Wed 5/79:42 pmPDX - ONT
Nonstop2h 16mHawaiian Airlines
Deal found 3/27$179
This Travelocity deal was found by Cheapflights users on 3/27. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/292:19 pmONT - PDX
Nonstop2h 31mMultiple Airlines
Tue 6/37:00 amPDX - ONT
Nonstop2h 17mMultiple Airlines
Deal found 3/27$183
This Southwest deal was found by Cheapflights users on 3/27. 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.
Thu 5/294:35 pmONT - PDX
1 stop6h 15mSouthwest
Tue 6/36:45 amPDX - ONT
1 stop3h 25mSouthwest
Deal found 3/27$192
This Delta deal was found by Cheapflights users on 3/28. 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.
Tue 4/222:35 pmONT - PDX
1 stop4h 35mDelta
Wed 4/307:05 pmPDX - ONT
1 stop4h 36mDelta
Deal found 3/28$197
This CheapOair deal was found by Cheapflights users on 3/27. 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 5/245:21 pmONT - BOI
1 stop17h 30mFrontier
Thu 5/2912:36 pmBOI - ONT
1 stop12h 15mFrontier
Deal found 3/27$227
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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 5/147:00 amONT - MFR
1 stop5h 10mHawaiian Airlines
Wed 5/211:30 pmMFR - ONT
1 stop4h 55mHawaiian Airlines
Deal found 3/27$238
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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.
Thu 4/246:00 amONT - BOI
1 stop5h 16mHawaiian Airlines
Thu 5/16:30 amBOI - ONT
1 stop5h 21mHawaiian Airlines
Deal found 3/27$238
This Delta deal was found by Cheapflights users on 3/27. 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 5/292:55 pmONT - BOI
1 stop6h 24mDelta
Tue 6/38:46 amBOI - ONT
1 stop6h 29mDelta
Deal found 3/27$239
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
Thu 4/176:00 amONT - BOI
1 stop6h 52mAlaska Airlines
Fri 4/185:00 pmBOI - ONT
1 stop7h 59mAlaska Airlines
Deal found 3/27$249
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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.
Sat 4/197:00 amONT - MFR
1 stop7h 52mAlaska Airlines
Sat 4/261:30 pmMFR - ONT
1 stop6h 59mAlaska Airlines
Deal found 3/26$253

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 March 28, 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

Fri 5/23

2:19 pm-4:50 pm

Nonstop2h 31m

Portland

Mon 5/26

11:04 am-1:24 pm

Nonstop2h 20m

$176

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Tue 4/22

8:59 pm-11:20 pm

Nonstop2h 21m

Portland

Tue 4/29

9:42 pm-11:58 pm

Nonstop2h 16m

$177

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Wed 4/30

7:00 am-9:26 am

Nonstop2h 26m

Portland

Wed 5/7

9:42 pm-11:58 pm

Nonstop2h 16m

$179

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Thu 5/29

2:19 pm-4:50 pm

Nonstop2h 31m

Portland

Tue 6/3

7:00 am-9:17 am

Nonstop2h 17m

$183

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Thu 5/29

4:35 pm-10:50 pm

1 stop6h 15m

Portland

Tue 6/3

6:45 am-10:10 am

1 stop3h 25m

$192

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Tue 4/22

2:35 pm-8:49 pm

1 stop6h 14m

Portland

Tue 4/29

7:05 pm-11:41 pm

1 stop4h 36m

$197

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 5/24

5:21 pm-11:51 am

1 stop17h 30m

Boise Air Term. Gowen Fld

Thu 5/29

12:36 pm-11:51 pm

1 stop12h 15m

$227

OntarioMedford

ONT - MFR

ONTMFR

Ontario

Wed 5/14

7:00 am-12:10 pm

1 stop5h 10m

Medford

Wed 5/21

1:30 pm-6:25 pm

1 stop4h 55m

$238

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 4/24

6:00 am-12:16 pm

1 stop5h 16m

Boise Air Term. Gowen Fld

Thu 5/1

6:30 am-10:51 am

1 stop5h 21m

$238

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 5/29

2:55 pm-10:19 pm

1 stop6h 24m

Boise Air Term. Gowen Fld

Tue 6/3

8:46 am-2:15 pm

1 stop6h 29m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 60 results
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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 $370). 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 March 28, 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.

Weekly flight availability from Ontario to Oregon

Explore weekly flight availability from Ontario to Oregon. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 28, 2025.

The most flights from ONT to USOR are scheduled on a Friday (7 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (3 on average).

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 March 28, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.1
Very good
4,274 reviews
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,897 reviews
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Hawaiian Airlines
7.9
Good
2,336 reviews
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 107 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?

    $79 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Hawaiian Airlines and Alaska Airlines, with prices starting from $89 and $98, respectively.

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

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

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

    Consider Hawaiian Airlines (90%), SkyWest Airlines (89%) or Alaska Airlines (89%) 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 $221 for a flight from Ontario to Oregon. The cheapest flight overall is $44 while the most popular route, (Ontario - Portland) is currently priced at $156.

  • 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 $370). 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.

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Alternative routes for Ontario to Oregon

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Ontario to Oregon

Discover the top 8 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$48Average$96FlexibilityNo cancel feeOn-time65%
FrontierCheapest$55Average$120FlexibilityNo cancel feeOn-time62%
DeltaCheapest$137Average$359FlexibilityNo cancel feeOn-timeN/A
Avelo AirlinesCheapest$142Average$187FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$156Average$347FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$164Average$404FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$167Average$247FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$172Average$368FlexibilityNo cancel feeOn-time63%
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