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$58+ 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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PDX
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$99
(Frontier)

One-way from

$58
(Kiwi.com)

Popular in

November

Cheapest in

January

Average price

$221

Good round-trip deal

$120 or less

Good one-way deal

$84 or less
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. 7% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Frontier deal was found by Cheapflights users on 6/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/83:43 pmONT - PDX
Nonstop2h 23mFrontier
Fri 7/1111:13 amPDX - ONT
Nonstop2h 23mFrontier
Deal found 6/12$99
This Agoda.com deal was found by Cheapflights users on 6/11. 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 Agoda.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:00 amONT - EUG
1 stop6h 39mHawaiian Airlines
Tue 9/95:27 amEUG - ONT
1 stop3h 59mHawaiian Airlines
Deal found 6/11$169
This Southwest deal was found by Cheapflights users on 6/12. 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.
Tue 9/165:35 pmONT - EUG
1 stop3h 30mSouthwest
Tue 9/232:10 pmEUG - ONT
1 stop3h 25mSouthwest
Deal found 6/12$174
This Agoda.com deal was found by Cheapflights users on 6/10. 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 Agoda.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/47:22 pmONT - EUG
1 stop4h 37mMultiple Airlines
Tue 9/95:27 amEUG - ONT
1 stop3h 59mMultiple Airlines
Deal found 6/10$175
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 8/166:10 pmONT - PDX
Nonstop2h 17mAlaska Airlines
Tue 8/197:01 amPDX - ONT
Nonstop2h 22mAlaska Airlines
Deal found 6/10$177
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 7/95:59 pmONT - EUG
1 stop4h 50mDelta
Fri 7/185:20 pmEUG - ONT
1 stop5h 27mDelta
Deal found 6/10$179
This Southwest deal was found by Cheapflights users on 6/10. 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.
Tue 7/84:25 pmONT - PDX
1 stop5h 45mSouthwest
Thu 7/105:00 amPDX - ONT
1 stop5h 25mSouthwest
Deal found 6/10$199
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 7/116:58 pmONT - EUG
1 stop5h 01mAlaska Airlines
Sat 7/196:00 amEUG - ONT
1 stop7h 26mAlaska Airlines
Deal found 6/10$209
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 7/16:58 pmONT - RDM
1 stop5h 01mAlaska Airlines
Tue 7/86:00 amRDM - ONT
1 stop7h 27mAlaska Airlines
Deal found 6/10$218
This Hawaiian Airlines deal was found by Cheapflights users on 6/12. 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 8/2111:39 amONT - MFR
1 stop5h 27mHawaiian Airlines
Sun 8/245:14 amMFR - ONT
1 stop4h 12mHawaiian Airlines
Deal found 6/12$218
This Delta deal was found by Cheapflights users on 6/12. 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.
Fri 7/115:59 pmONT - RDM
1 stop4h 55mDelta
Thu 7/177:00 amRDM - ONT
1 stop6h 34mDelta
Deal found 6/12$219
This Delta deal was found by Cheapflights users on 6/12. 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 7/122:14 pmONT - MFR
1 stop7h 18mDelta
Thu 7/246:15 amMFR - ONT
1 stop7h 19mDelta
Deal found 6/12$219

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 June 12, 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

Tue 7/8

3:43 pm-6:06 pm

Nonstop2h 23m

Portland

Thu 7/17

11:13 am-1:36 pm

Nonstop2h 23m

$99

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Thu 9/4

6:00 am-12:39 pm

1 stop6h 39m

Eugene

Tue 9/9

5:27 am-9:26 am

1 stop3h 59m

$169

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Tue 9/16

5:35 pm-9:05 pm

1 stop3h 30m

Eugene

Tue 9/23

2:10 pm-5:35 pm

1 stop3h 25m

$174

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Thu 9/4

7:22 pm-11:59 pm

1 stop4h 37m

Eugene

Tue 9/9

5:27 am-9:26 am

1 stop3h 59m

$175

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sat 8/16

6:10 pm-8:27 pm

Nonstop2h 17m

Portland

Tue 8/19

7:01 am-9:23 am

Nonstop2h 22m

$177

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Wed 7/9

5:59 pm-10:49 pm

1 stop4h 50m

Eugene

Fri 7/18

5:20 pm-10:47 pm

1 stop5h 27m

$179

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Mon 8/18

7:30 am-9:44 am

Nonstop2h 14m

Portland

Thu 8/21

9:30 pm-11:53 pm

Nonstop2h 23m

$197

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Tue 7/8

4:25 pm-10:10 pm

1 stop5h 45m

Portland

Thu 7/10

5:00 am-10:25 am

1 stop5h 25m

$199

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Fri 7/11

6:58 pm-11:59 pm

1 stop5h 01m

Eugene

Sat 7/19

6:00 am-1:26 pm

1 stop7h 26m

$209

OntarioRedmond

ONT - RDM

ONTRDM

Ontario

Tue 7/1

6:58 pm-11:59 pm

1 stop5h 01m

Bend/Redmond

Tue 7/8

6:00 am-1:27 pm

1 stop7h 27m

$218

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 $368). 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 June 12, 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 June 12, 2025.

The most flights from ONT to USOR are scheduled on a Monday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 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 June 12, 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
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 95 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?

    $58 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 Hawaiian Airlines, with prices starting from $89 and $90, respectively.

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

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

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

    Consider SkyWest Airlines (100%), Hawaiian Airlines (92%) or Alaska Airlines (91%) 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 $342 for a flight from Ontario to Oregon. The cheapest flight overall is $55 while the most popular route, (Ontario - Portland) is currently priced at $100.

  • 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 $368). 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

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$48Average$93FlexibilityNo cancel feeOn-time65%
FrontierCheapest$56Average$127FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$108Average$262FlexibilityNo cancel feeOn-time85%
DeltaCheapest$137Average$298FlexibilityNo cancel feeOn-timeN/A
Avelo AirlinesCheapest$142Average$187FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$156Average$343FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$176Average$363FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$176Average$341FlexibilityNo cancel feeOn-time63%

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