Cheap flights from Portland to Ontario (PDX - ONT)

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

The best prices from Portland to Ontario are usually found in April or January, booked 34 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

How to find the cheapest flight from
Portland (PDX) to Ontario (ONT)

All the information you need to plan the best PDX to ONT flight in 2021: compare Portland to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.
PDX - ONT
Price
$176 - $235
ONT
Temperature
53.6 - 78.8 °F
ONT
Precipitation
0.1 - 3.4 inches

Popular in

November

High demand for flights, 14% potential price rise

Cheapest in

April

Best time to find cheap flights, 13% potential price drop

Round-trip from

$176

From Portland to Ontario

One-way from

$98

One-way flight from Portland to Ontario

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest month to fly from Portland to Ontario?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, September can be a great choice for travel to Ontario. Flights to Ontario from Portland in September are about $178 on average during September, but can be found for as low as $83.

How far in advance should I book a flight from Portland to Ontario?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 50 days in advance, which can save you up to 72% on flights from Portland to Ontario compared to booking the week you need them. Waiting 50 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $226. For sooner than that we have options available in the next 3 days from $299.

What is the cheapest day to fly round-trip from Portland to Ontario?

Flights from Portland to Ontario are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Ontario.

When is the cheapest time to fly from Portland to Ontario (PDX - ONT)?

When flying from Portland to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 17% versus a flight in the afternoon.

Cheap flights from Portland to Ontario in November, December 2021

The best prices found for PDX to ONT flights for November, December
13 Dec - 8 Jan
$128pp
PDX
Portland
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
PDX
Portland
6 Dec - 11 Dec
$133pp
PDX
Portland
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
PDX
Portland
10 Dec - 15 Dec
$137pp
PDX
Portland
Frontier
   
2 STOPS
ONT
Ontario
ONT
Ontario
Frontier
   
2 STOPS
PDX
Portland

Portland to Ontario 2022 flight deals

Cheap flights to Ontario from Portland found for next year
13 Dec - 8 Jan
$128pp
PDX
Portland
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
PDX
Portland
6 Dec - 11 Dec
$133pp
PDX
Portland
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
PDX
Portland
10 Dec - 15 Dec
$137pp
PDX
Portland
Frontier
   
2 STOPS
ONT
Ontario
ONT
Ontario
Frontier
   
2 STOPS
PDX
Portland

Non-stop flights to Ontario from Portland

Save time with Portland to Ontario direct flight deals
25 Jan - 2 Feb
$157pp
PDX
Portland
Alaska Airlines
Non-Stop
ONT
Ontario
ONT
Ontario
Alaska Airlines
Non-Stop
PDX
Portland
14 Dec - 14 Jan
$166pp
PDX
Portland
Alaska Airlines
Non-Stop
ONT
Ontario
ONT
Ontario
Alaska Airlines
Non-Stop
PDX
Portland
9 Jan - 14 Jan
$167pp
PDX
Portland
Alaska Airlines
Non-Stop
ONT
Ontario
ONT
Ontario
Alaska Airlines
Non-Stop
PDX
Portland

Last minute flights from Portland to Ontario

Late deals on round-trip flights to Ontario from Portland, departing today and this week
1 Dec - 4 Dec
$165pp
PDX
Portland
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
   
2 STOPS
PDX
Portland
3 Dec - 11 Dec
$173pp
PDX
Portland
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
PDX
Portland
3 Dec - 11 Dec
$177pp
PDX
Portland
Frontier
   
2 STOPS
ONT
Ontario
ONT
Ontario
Frontier
   
2 STOPS
PDX
Portland

One-way flights to Ontario from Portland

The cheapest one-way flights from Portland to Ontario
2:21 pm - 6:47 pm
Delta
1 Stop
4h 26m
PDX - ONT
Delta
$98
Delta
3:25 pm - 4:34 am
Multiple Airlines
1 Stop
13h 09m
PDX - ONT
Multiple Airlines
$107
Kiwi.com
2:30 pm - 6:55 pm
United Airlines
1 Stop
4h 25m
PDX - ONT
United Airlines
$108
United

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Portland</span> to <span class="emphasized">Ontario</span> flights.

Flight FAQs

From Portland to Ontario

What airports do I use to fly from Portland to Ontario?

You will need to book a flight from Portland to Ontario if you want to fly from Portland to Ontario. At least 9 different airlines have flights from Portland (PDX) to Ontario (ONT) on a regular basis. There is 1 flight to Ontario from the Portland airport per day. If you manage to book one that is nonstop, then you can expect the flight time from PDX to ONT to be around 2h 10m.

Which airlines flying from Portland to Ontario have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Portland to Ontario that may be offering flexible cancellation policies are Alaska Airlines, United Airlines, and Delta. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Portland to Ontario for under $200 on Cheapflights?

Yes, there are multiple flights from Portland to Ontario for under $200. The cheapest flight booked recently is on Frontier for just $128, but on average you can expect to pay $144.

Are there nonstop flights from Portland to Ontario for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Portland to Ontario under $200. A good price for a nonstop flight from Portland to Ontario is less than $243.

Are there last-minute flights available from Portland to Ontario for under $200?

There are currently 20+ open flights from Portland to Ontario within the next 7 days for less than $200.

How popular is this Portland to Ontario flight route?

Flights from Portland to Ontario have been viewed 73 times in the past calendar month.

What are the cheapest airlines flying from Portland to Ontario round-trip?

Frontier, at $128, was found to be the cheapest airline from Portland to Ontario.Alternate airlines to your destination round-trip include Delta and Alaska Airlines. Frontier is priced at 36% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Portland to Ontario one-way?

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $63. Users have also found prices from $64 and $78 on Alaska Airlines and Delta, respectively.

What are the cheapest flights from Portland to Ontario?

While on average a flight from Portland to Ontario is generally $335, our data shows the cheapest flight currently is $85. When looking at the most popular route, (Portland - Ontario), you can expect to pay $142 for that flight.

What are the most popular airlines that fly from Portland to Ontario?

The most popular airlines flying from Portland to Ontario are Major Airline, American Airlines and Alaska Airlines. Something to consider prior to booking your flight.

COVID Restrictions

View COVID Travel Restrictions for Ontario, CA

Do I need a COVID test to fly to Ontario from Portland?

Information is based on travel restrictions for travel to Ontario within the United States

Most visitors from Portland need to provide a negative COVID-19 test result and/or quarantine to enter Ontario.

COVID-19 testing requirements
Visitors from Portland must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Ontario.

Quarantine requirements
Visitors from Portland are not required to quarantine after entering Ontario.

Do I need a test to fly back to Portland from Ontario?

Returning to Portland from Ontario

COVID-19 testing requirements
Visitors from Ontario must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Portland.

Quarantine requirements
Visitors from Ontario are not required to quarantine after entering Portland.

Hide COVID Travel Restrictions for Ontario, CA

Alternative routes for Portland to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Ontario

Things to know before you go - useful duration and weather info for your trip from Portland to Ontario.
Flight duration from PDX to ONT
2h 19m

Airports servicing Portland

Airports servicing Ontario

Top 7 airlines flying from Portland to Ontario

The chart below displays the airlines Cheapflights users traveling from Portland to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Delta
$75 $230 No cancel fee N/A
United Airlines
$77 $242 No cancel fee 69%
JetBlue
$79 $211 No cancel fee 62%
Alaska Airlines
$98 $261 No cancel fee 75%
American Airlines
$128 $251 No cancel fee 71%
Frontier
$172 $322 No cancel fee 62%
Southwest
$172 $295 No cancel fee 63%

Hourly flight availability from Portland to Ontario

See what time of day planes typically take off from Portland towards Ontario.
Morning 6 AM to noon 50% of PDX to ONT departures
Afternoon Noon to 6 PM 50% of PDX to ONT departures
Early morning Midnight to 6 AM 0% of PDX to ONT departures
Evening 6 PM to midnight 0% of PDX to ONT departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Portland to Ontario
See how many times per day planes take to the skies headed from Portland to Ontario.
Sunday
2 daily flights
Monday
2 daily flights
Tuesday
2 daily flights
Wednesday
2 daily flights
Thursday
1 daily flight
Friday
2 daily flights
Saturday
2 daily flights
Home North America USA California Ontario Cheap flights from Portland to Ontario