Cheap Flight Tickets from Portland (PDX) to Ontario (ONT), Starting at $139

Good to Know: Cheapest and Fastest PDX - ONT Flights

Useful information for finding best airline tickets from Portland International to Ontario International on your next trip.

Cheapest Round Trip Flight

$139

WN Southwest Airlines • 1 stop • 8h 40m

Oct 28 – Nov 04

The cheapest round trip flight from Portland to Ontario (PDX-ONT-PDX) is currently $139

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Cheapest One way Flight

$345

WN Southwest Airlines • 1 stop • 10h 30m

Oct 07

The cheapest one way flight from Portland to Ontario (PDX-ONT) is currently $345

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Cheapest Direct Flight

$149

WN Southwest Airlines • nonstop • 5h 30m

Oct 28

The cheapest nonstop flight from Portland to Ontario (PDX-ONT) is currently $149

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Fastest Flight

3h 41m

The fastest nonstop flight from Portland to Ontario (PDX-ONT) takes 3h 41m

Top Airlines Flying from Portland to Ontario

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

United Airlines, UA

United Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska Airlines

Latest Flight Deals from Portland (PDX) to Ontario (ONT)

Compare and book low fare round-trip air tickets from Portland to Ontario. Ideal for travelers with confirmed return itineraries.

Oct 28 - Nov 04, Economy
WN
Portland → Ontario
8h 40m
4:05 PM - 9:25 PM • 1 stop
WN
Portland → Ontario
6h 55m
3:05 PM - 7:20 PM • 1 stop
$139
Southwest Airlines
Oct 28 - Nov 04, Economy
WN
Portland → Ontario
5h 40m
6:40 AM - 10:20 AM • 1 stop
WN
Portland → Ontario
3h 55m
10:50 AM - 1:25 PM • nonstop
$180
Southwest Airlines
Oct 28 - Nov 04, Economy
WN
Portland → Ontario
7h 30m
6:40 AM - 11:30 AM • 1 stop
WN
Portland → Ontario
6h 40m
3:20 PM - 7:20 PM • nonstop
$249
Southwest Airlines
Oct 28 - Oct 29, Economy
DL
Portland → Ontario
9h 6m
5:30 AM - 11:16 AM • 1 stop
DL
Portland → Ontario
10h 44m
5:03 PM - 11:47 PM • 1 stop
$264
Delta Airlines
Oct 28 - Oct 29, Economy
UA
Portland → Ontario
7h 14m
10:59 AM - 3:33 PM • 1 stop
UA
Portland → Ontario
8h 29m
9:25 AM - 2:34 PM • 1 stop
$563
United Airlines
Oct 28 - Oct 29, Economy
AS
Portland → Ontario
24h
7:37 PM - 10:17 AM • 1 stop
AS
Portland → Ontario
3h 40m
5:30 PM - 7:50 PM • nonstop
$635
Alaska Airlines

Fly from Portland to Ontario with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Portland to Ontario? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Portland to Ontario Flights

What are the airports in Portland?
PDX
What’s the most popular airline flying from PDX to ONT?
The most popular airline flying from Portland to Ontario are
Can I fly from PDX to ONT non-stop?
Yes, you can fly PDX to ONT non-stop on
Which airlines fly nonstop between Portland and Ontario?
The non-stop flights between Portland and Ontario are .
What’s the earliest departure time from PDX to ONT Airport?
The earliest flight leaves PDX at 5:30 am and lands in ONT - Ontario International
What are the airports in Ontario?
ONT
Can I make changes to my Portland to Ontario flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from PDX to ONT?
Read the fare rules of the Portland to Ontario air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Portland and Ontario?
operate flights between Portland and Ontario
How long does a flight from Portland to Ontario take?
It takes approximately 2 hour to fly non-stop from PDX to ONT, which is 838.45 miles by air.
Which airlines provide the cheapest flights from Portland (PDX) to Ontario (ONT) ?
In the past couple of days, the cheapest tickets to ONT from PDX were found on WN : USD 345
Do I need a passport to fly between PDX and ONT?
No
What’s the latest departure time from PDX to ONT ?
The last flight leaves PDX at 7:37 pm

Portland (PDX) to Ontario (ONT): Airport Information

Origin Airport Portland International , Portland, US
Destination Airport Ontario International , Ontario, US
Distance 838 miles

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