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Ontario

$68+ Cheap flights from Oregon to Ontario (ONT)

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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — ONT
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Oregon to Ontario

Keep the following information in mind while searching for Oregon to Ontario flight deals. Data was last updated July 31, 2025.

Round-trip from

$110
(Cheapflightsfares)

One-way from

$68
(Cheapflightsfares)

Popular in

November

Cheapest in

January

Average price

$197

Good round-trip deal

$126 or less

Good one-way deal

$86 or less
From Oregon to Ontario
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One-way flight from Oregon to Ontario
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Highest demand for flights based on searches. 9% potential increase in price ($18 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 Oregon to Ontario.
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Price to beat on a one-way flight from Oregon to Ontario.
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Find flight deals from Oregon to Ontario

Cheapest flights from Oregon to Ontario
Explore the most affordable flight options available from Oregon to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 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.
Fri 8/297:04 pmPDX - ONT
Nonstop2h 23mFrontier
Mon 9/18:25 amONT - PDX
Nonstop2h 24mFrontier
Deal found 7/29$110
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 9/167:03 amPDX - ONT
Nonstop2h 23mAlaska Airlines
Sat 9/277:10 amONT - PDX
Nonstop2h 19mAlaska Airlines
Deal found 7/31$157
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.
Thu 8/712:36 pmBOI - ONT
1 stop12h 14mFrontier
Sat 8/165:21 pmONT - BOI
1 stop17h 25mFrontier
Deal found 7/29$215
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:22 pmBOI - ONT
1 stop5h 26mAmerican Airlines
Tue 10/710:09 amONT - BOI
1 stop8h 28mAmerican Airlines
Deal found 7/30$229
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.
Thu 9/258:00 amBOI - ONT
1 stop7h 12mAlaska Airlines
Mon 9/2911:39 amONT - BOI
1 stop5h 37mAlaska Airlines
Deal found 7/30$234
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:00 amBOI - ONT
1 stop3h 57mDelta
Sun 9/216:00 amONT - BOI
1 stop3h 34mDelta
Deal found 7/30$235
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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.
Mon 9/155:54 amRDM - ONT
1 stop4h 50mAlaska Airlines
Sat 9/2011:39 amONT - RDM
1 stop5h 30mAlaska Airlines
Deal found 7/31$236
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/155:14 amMFR - ONT
1 stop4h 12mAlaska Airlines
Mon 9/1511:39 amONT - MFR
1 stop5h 27mAlaska Airlines
Deal found 7/29$237
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.
Tue 9/95:32 pmEUG - ONT
1 stop5h 10mDelta
Tue 9/165:40 pmONT - EUG
1 stop5h 02mDelta
Deal found 7/29$237
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.
Tue 9/165:14 amMFR - ONT
1 stop4h 12mHawaiian Airlines
Sat 9/207:10 amONT - MFR
1 stop4h 49mHawaiian Airlines
Deal found 7/29$238
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.
Sat 10/45:42 pmEUG - ONT
1 stop6h 21mHawaiian Airlines
Mon 10/67:10 amONT - EUG
1 stop4h 19mHawaiian Airlines
Deal found 7/29$243
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.
Tue 8/196:00 amMFR - ONT
1 stop4h 50mDelta
Wed 8/201:15 pmONT - MFR
2 stops9h 40mDelta
Deal found 7/29$244

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oregon to Ontario 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 31, 2025.
Use the filters below to find and compare flights from Oregon to Ontario that are best for you.

Fly from

Oregon

Fly to

Ontario

Route

Depart

Return

Price

PortlandOntario

PDX - ONT

PDXONT

Portland

Fri 8/29

7:04 pm-9:27 pm

Nonstop2h 23m

Ontario

Mon 9/1

8:25 am-10:49 am

Nonstop2h 24m

$110

PortlandOntario

PDX - ONT

PDXONT

Portland

Tue 9/16

7:03 am-9:26 am

Nonstop2h 23m

Ontario

Sat 9/20

5:49 pm-8:12 pm

Nonstop2h 23m

$157

PortlandOntario

PDX - ONT

PDXONT

Portland

Thu 9/4

9:30 pm-11:54 pm

Nonstop2h 24m

Ontario

Mon 9/8

7:10 am-9:29 am

Nonstop2h 19m

$177

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 9/18

12:22 pm-7:54 pm

1 stop8h 32m

Ontario

Wed 9/24

8:59 pm-11:37 am

1 stop13h 38m

$217

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 10/2

5:22 pm-9:48 pm

1 stop5h 26m

Ontario

Tue 10/7

10:09 am-7:37 pm

1 stop8h 28m

$229

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 9/25

8:00 am-2:12 pm

1 stop7h 12m

Ontario

Mon 9/29

11:39 am-6:16 pm

1 stop5h 37m

$234

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 9/18

6:00 am-8:57 am

1 stop3h 57m

Ontario

Sun 9/21

6:00 am-10:34 am

1 stop3h 34m

$235

RedmondOntario

RDM - ONT

RDMONT

Bend/Redmond

Mon 9/15

5:54 am-10:44 am

1 stop4h 50m

Ontario

Sat 9/20

11:39 am-5:09 pm

1 stop5h 30m

$236

EugeneOntario

EUG - ONT

EUGONT

Eugene

Tue 9/9

5:32 pm-10:42 pm

1 stop5h 10m

Ontario

Tue 9/16

5:40 pm-10:42 pm

1 stop5h 02m

$237

MedfordOntario

MFR - ONT

MFRONT

Medford

Mon 9/15

5:14 am-9:26 am

1 stop4h 12m

Ontario

Mon 9/15

11:39 am-5:06 pm

1 stop5h 27m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 54 results
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Best time to book a flight from Oregon to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Oregon 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 Oregon to Ontario

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

Currently, August is the cheapest month in which you can book a flight from Oregon to Ontario (average of $246). Flying from Oregon to Ontario in March is currently the most expensive (average of $328). 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 OR to ONT?

Find hourly flight availability from Oregon to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

When flying from Oregon to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Oregon to Ontario

Explore weekly flight availability from Oregon to Ontario. 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 31, 2025.

The most flights from USOR to ONT are scheduled on a Monday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated July 31, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from Oregon to Ontario to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Related info for your journey

Find useful and relevant information for your journey from Oregon to Ontario. 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 into for flights to Ontario from Oregon?

    Ontario (ONT) is the airport you will fly into if you book a flight from Oregon to Ontario. It is only a 3.1 mi journey from Ontario (ONT) to Ontario’s city center.

  • How popular is this Oregon to Ontario flight route?

    This flight path from Oregon to Ontario was viewed by 147 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 Oregon to Ontario one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $68. Users have also found prices from $88 and $89 on Alaska Airlines and Delta, respectively.

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

    The most popular route from Oregon to Ontario is Portland - Ontario. You may also consider Boise Air Term. Gowen Fld - Ontario or Bend/Redmond - Ontario.

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

    No one likes to see their flight delayed. When booking a flight from Oregon to Ontario consider choosing Alaska Airlines (89%), Horizon Air (89%) or Hawaiian Airlines (89%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Oregon to Ontario?

    The cheapest flight price from Oregon to Ontario is $66. On average you can expect to pay $240. The most popular route, (Portland - Ontario), can usually be booked for $64.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Oregon to Ontario 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 Oregon to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Oregon to Ontario (average of $246). Flying from Oregon to Ontario in March is currently the most expensive (average of $328). 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 Oregon to Ontario

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

Discover the top 8 airlines that operate flights from Oregon to Ontario. 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 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$61Average$137FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$68Average$120FlexibilityNo cancel feeOn-time65%
DeltaCheapest$93Average$309FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$108Average$239FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$156Average$341FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$166Average$352FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$173Average$317FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$216Average$399FlexibilityNo cancel feeOn-time71%

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