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$88+ 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PDX
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$119
(Frontier)

One-way from

$88
(Alaska Airlines)

Popular in

November

Cheapest in

January

Average price

$192

Good round-trip deal

$191 or less

Good one-way deal

$118 or less
Provider with most accurate pricing for Los Angeles-Portland flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Portland flights.
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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. 6% potential increase in price ($14 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 May 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 May 1, 2025.

This Frontier deal was found by Cheapflights users on 4/30. 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.
Sat 6/143:33 pmONT - PDX
Nonstop2h 25mFrontier
Tue 6/1712:18 pmPDX - ONT
Nonstop2h 20mFrontier
Deal found 4/30$119
This Orbitz deal was found by Cheapflights users on 5/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/12:30 pmONT - PDX
Nonstop2h 25mMultiple Airlines
Wed 6/49:41 pmPDX - ONT
Nonstop2h 16mMultiple Airlines
Deal found 5/1$148
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 5/3110:00 amONT - PDX
Nonstop2h 22mAlaska Airlines
Sat 5/312:50 pmPDX - ONT
Nonstop2h 16mAlaska Airlines
Deal found 4/29$151
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/36:00 amONT - PDX
1 stop6h 22mUnited Airlines
Tue 6/103:42 pmPDX - ONT
1 stop7h 03mUnited Airlines
Deal found 4/30$154
This Delta deal was found by Cheapflights users on 4/29. 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 5/137:05 pmONT - PDX
1 stop5h 05mDelta
Sat 5/1711:25 amPDX - ONT
1 stop6h 55mDelta
Deal found 4/29$197
This Delta deal was found by Cheapflights users on 4/30. 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 5/242:55 pmONT - MFR
1 stop7h 52mDelta
Sun 5/256:15 amMFR - ONT
1 stop8h 00mDelta
Deal found 4/30$200
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 6/106:00 amONT - BOI
1 stop7h 05mAlaska Airlines
Tue 6/105:39 pmBOI - ONT
1 stop6h 07mAlaska Airlines
Deal found 4/30$213
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 5/217:30 amONT - MFR
1 stop4h 08mAlaska Airlines
Wed 5/285:48 pmMFR - ONT
1 stop4h 58mAlaska Airlines
Deal found 4/29$217
This Hawaiian Airlines deal was found by Cheapflights users on 4/29. 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 6/44:45 pmONT - BOI
1 stop4h 57mHawaiian Airlines
Wed 6/116:37 amBOI - ONT
1 stop5h 20mHawaiian Airlines
Deal found 4/29$218
This Delta deal was found by Cheapflights users on 4/29. 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 5/206:00 amONT - BOI
1 stop6h 10mDelta
Tue 5/275:40 pmBOI - ONT
1 stop7h 02mDelta
Deal found 4/29$219
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/167:25 pmONT - PDX
1 stop4h 32mAmerican Airlines
Tue 5/205:05 amPDX - ONT
1 stop6h 45mAmerican Airlines
Deal found 4/30$228
This Hawaiian Airlines deal was found by Cheapflights users on 4/30. 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 5/216:00 amONT - RDM
1 stop6h 30mHawaiian Airlines
Wed 5/2810:59 amRDM - ONT
1 stop7h 26mHawaiian Airlines
Deal found 4/30$236

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 May 1, 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

Sat 6/14

3:33 pm-5:58 pm

Nonstop2h 25m

Portland

Tue 6/17

12:18 pm-2:38 pm

Nonstop2h 20m

$119

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sun 6/1

2:30 pm-4:55 pm

Nonstop2h 25m

Portland

Wed 6/4

9:41 pm-11:57 pm

Nonstop2h 16m

$148

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sat 5/31

10:00 am-12:22 pm

Nonstop2h 22m

Portland

Sat 5/31

2:50 pm-5:06 pm

Nonstop2h 16m

$151

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Tue 6/3

6:00 am-12:22 pm

1 stop6h 22m

Portland

Tue 6/10

3:42 pm-10:45 pm

1 stop7h 03m

$154

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Tue 5/13

7:05 pm-12:10 am

1 stop5h 05m

Portland

Sat 5/17

11:25 am-6:20 pm

1 stop6h 55m

$197

OntarioMedford

ONT - MFR

ONTMFR

Ontario

Wed 5/21

11:51 am-5:08 pm

1 stop5h 17m

Medford

Sun 5/25

6:00 am-10:57 am

1 stop4h 57m

$199

OntarioMedford

ONT - MFR

ONTMFR

Ontario

Sat 5/24

2:55 pm-10:47 pm

1 stop7h 52m

Medford

Sun 5/25

6:15 am-2:15 pm

1 stop8h 00m

$200

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 6/10

6:00 am-2:05 pm

1 stop7h 05m

Boise Air Term. Gowen Fld

Tue 6/10

5:39 pm-10:46 pm

1 stop6h 07m

$213

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 6/4

4:45 pm-10:42 pm

1 stop4h 57m

Boise Air Term. Gowen Fld

Wed 6/11

6:37 am-10:57 am

1 stop5h 20m

$218

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 5/20

6:00 am-1:10 pm

1 stop6h 10m

Boise Air Term. Gowen Fld

Tue 5/27

5:40 pm-11:42 pm

1 stop7h 02m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 May 1, 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 May 1, 2025.

The most flights from ONT to USOR are scheduled on a Monday (6 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 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 May 1, 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
9,968 reviews

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

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
9,968 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

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
4,294 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

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
2,408 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Comfort

7.9

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 99 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?

    $88 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Hawaiian Airlines and Frontier, with prices starting from $89 and $90, 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 $240 for a flight from Ontario to Oregon. The cheapest flight overall is $70 while the most popular route, (Ontario - Portland) is currently priced at $77.

  • 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

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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$48Average$96FlexibilityNo cancel feeOn-time65%
FrontierCheapest$56Average$126FlexibilityNo cancel feeOn-time62%
DeltaCheapest$137Average$316FlexibilityNo cancel feeOn-timeN/A
Avelo AirlinesCheapest$142Average$180FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$156Average$352FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$164Average$302FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$172Average$338FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$177Average$380FlexibilityNo cancel feeOn-time69%

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