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$62+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PDX
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$110
(Cheapflightsfares)

One-way from

$62
(Frontier)

Popular in

November

Cheapest in

January

Average price

$214

Good round-trip deal

$138 or less

Good one-way deal

$96 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. 6% potential increase in price ($14 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 July 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 July 30, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/258:25 amONT - PDX
Nonstop2h 24mFrontier
Fri 8/297:04 pmPDX - ONT
Nonstop2h 23mFrontier
Deal found 7/29$110
This Hawaiian Airlines deal was found by Cheapflights users on 7/30. 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.
Sat 10/117:10 amONT - PDX
Nonstop2h 20mHawaiian Airlines
Wed 10/159:30 pmPDX - ONT
Nonstop2h 21mHawaiian Airlines
Deal found 7/30$157
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/66:10 amONT - PDX
1 stop7h 06mAmerican Airlines
Wed 9/105:16 amPDX - ONT
1 stop6h 40mAmerican Airlines
Deal found 7/29$159
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/135:21 pmONT - BOI
1 stop17h 25mFrontier
Sun 8/1712:36 pmBOI - ONT
1 stop12h 14mFrontier
Deal found 7/29$215
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/410:20 amONT - BOI
1 stop8h 42mAmerican Airlines
Sat 10/116:40 amBOI - ONT
1 stop9h 44mAmerican Airlines
Deal found 7/29$223
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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.
Mon 9/156:00 amONT - RDM
1 stop5h 19mHawaiian Airlines
Mon 9/155:58 pmRDM - ONT
1 stop6h 05mHawaiian Airlines
Deal found 7/29$231
This United Airlines deal was found by Cheapflights users on 7/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:50 pmONT - EUG
1 stop4h 00mUnited Airlines
Tue 9/166:00 amEUG - ONT
1 stop6h 13mUnited Airlines
Deal found 7/29$232
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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.
Fri 9/56:00 amONT - BOI
1 stop8h 00mAlaska Airlines
Sun 9/76:35 amBOI - ONT
1 stop5h 09mAlaska Airlines
Deal found 7/30$234
This Delta deal was found by Cheapflights users on 7/29. 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.
Fri 8/226:05 pmONT - BOI
1 stop4h 45mDelta
Sun 8/246:00 pmBOI - ONT
1 stop6h 40mDelta
Deal found 7/29$235
This Delta deal was found by Cheapflights users on 7/28. 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 10/285:50 pmONT - EUG
1 stop5h 24mDelta
Sat 11/15:57 amEUG - ONT
1 stop8h 04mDelta
Deal found 7/28$237
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
Sat 10/187:10 amONT - MFR
1 stop4h 37mAlaska Airlines
Sat 10/255:48 amMFR - ONT
1 stop6h 49mAlaska Airlines
Deal found 7/28$238
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/309:25 amONT - BOI
1 stop4h 45mSouthwest
Tue 10/712:40 pmBOI - ONT
2 stops7h 15mSouthwest
Deal found 7/29$240

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 July 30, 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

Mon 8/25

8:25 am-10:49 am

Nonstop2h 24m

Portland

Fri 8/29

7:04 pm-9:27 pm

Nonstop2h 23m

$110

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sat 10/11

7:10 am-9:30 am

Nonstop2h 20m

Portland

Wed 10/15

9:30 pm-11:51 pm

Nonstop2h 21m

$157

OntarioPortland

ONT - PDX

ONTPDX

Ontario

Sat 9/6

6:10 am-1:16 pm

1 stop7h 06m

Portland

Wed 9/10

5:16 am-11:56 am

1 stop6h 40m

$159

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 8/13

5:21 pm-11:46 am

1 stop17h 25m

Boise Air Term. Gowen Fld

Sun 8/17

12:36 pm-11:50 pm

1 stop12h 14m

$215

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 10/4

10:20 am-8:02 pm

1 stop8h 42m

Boise Air Term. Gowen Fld

Sat 10/11

6:40 am-3:24 pm

1 stop9h 44m

$223

OntarioRedmond

ONT - RDM

ONTRDM

Ontario

Mon 9/15

6:00 am-11:19 am

1 stop5h 19m

Bend/Redmond

Mon 9/15

5:58 pm-12:03 am

1 stop6h 05m

$231

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Tue 9/9

1:42 pm-5:50 pm

1 stop4h 08m

Eugene

Tue 9/16

6:00 am-12:13 pm

1 stop6h 13m

$232

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 9/5

6:00 am-3:00 pm

1 stop8h 00m

Boise Air Term. Gowen Fld

Sun 9/7

6:35 am-10:44 am

1 stop5h 09m

$234

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 8/22

6:05 pm-11:50 pm

1 stop4h 45m

Boise Air Term. Gowen Fld

Sun 8/24

6:00 pm-11:40 pm

1 stop6h 40m

$235

OntarioMedford

ONT - MFR

ONTMFR

Ontario

Sat 10/18

7:10 am-11:47 am

1 stop4h 37m

Medford

Sat 10/25

5:48 am-12:37 pm

1 stop6h 49m

$238

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 57 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 July 30, 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 July 30, 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).

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 July 30, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Ontario to Oregon have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

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

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

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
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

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
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

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
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

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
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

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 87 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?

    $62 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 $88 and $89, 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 Alaska Airlines (92%), Horizon Air (92%) or Hawaiian 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 $148 for a flight from Ontario to Oregon. The cheapest flight overall is $59 while the most popular route, (Ontario - Portland) is currently priced at $104.

  • 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 7 airlines flying from Ontario to Oregon

Discover the top 7 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$45Average$96FlexibilityNo cancel feeOn-time65%
FrontierCheapest$58Average$142FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$108Average$254FlexibilityNo cancel feeOn-time85%
DeltaCheapest$137Average$278FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$156Average$339FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$172Average$319FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$176Average$358FlexibilityNo cancel feeOn-time69%

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