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Uncover the best deals on Ontario to Portland flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest ONT - PDX Flights
Useful information for finding best airline tickets from Ontario International to Portland International on your next trip.
Cheapest Round Trip Flight
$232
Southwest Airlines
• 1 stop
• 7h 35m
Nov 12 – Nov 15
The cheapest round trip flight from Ontario to Portland (ONT-PDX-ONT) is currently $232
Cheapest One way Flight
$398
Southwest Airlines
• 1 stop
• 6h 50m
Oct 09
The cheapest one way flight from Ontario to Portland (ONT-PDX) is currently $398
Cheapest Direct Flight
$246
Alaska Airlines
• nonstop
• 3h 49m
Nov 12
The cheapest nonstop flight from Ontario to Portland (ONT-PDX) is currently $246
Fastest Flight
3h 49m
The fastest nonstop flight from Ontario to Portland (ONT-PDX) takes 3h 49m
Top Airlines Flying from Ontario to Portland
Latest Flight Deals from Ontario (ONT) to Portland (PDX)
Compare and book low fare round-trip air tickets from Ontario to Portland. Ideal for travelers with confirmed return itineraries.
Nov 12 - Nov 15, Economy
Ontario → Portland
7h 35m
6:10 PM - 11:05 PM • 1 stop
Ontario → Portland
5h 50m
5:55 AM - 9:45 AM • nonstop
Southwest Airlines
Nov 12 - Nov 15, Economy
Ontario → Portland
7h 20m
6:25 PM - 11:05 PM • 1 stop
Ontario → Portland
15h 30m
5:55 AM - 3:25 PM • 1 stop
Southwest Airlines
Nov 12 - Nov 15, Economy
Ontario → Portland
10h 40m
4:25 PM - 11:05 PM • 1 stop
Ontario → Portland
10h 10m
5:55 AM - 12:05 PM • 1 stop
Southwest Airlines
Nov 12 - Nov 15, Economy
Ontario → Portland
10h 55m
5:20 PM - 12:15 AM • 1 stop
Ontario → Portland
9h
5:10 AM - 10:50 AM • 1 stop
Southwest Airlines
Nov 12 - Nov 15, Economy
Ontario → Portland
7h
7:05 PM - 11:25 PM • 1 stop
Ontario → Portland
10h 10m
5:55 AM - 12:05 PM • 1 stop
Southwest Airlines
Explore competitive one-way airfare options for ONT - PDX flights. Best suited for flexible or open-ended travel plans.
Flying to Portland soon? We've surfaced some of the most affordable last-minute flights from Ontario to Portland, ideal for urgent plans or spontaneous trips.
Looking for the fastest way to Portland? These direct flight options from ONT to PDX offer both convenience and value—no layovers, just straight to your destination.
Nov 12 - Nov 15, Economy
Ontario → Portland
3h 49m
2:05 PM - 4:34 PM • nonstop
Ontario → Portland
3h 43m
7:00 AM - 9:23 AM • nonstop
Alaska Airlines
Nov 12 - Nov 15, Economy
Ontario → Portland
5h 40m
1:15 PM - 4:55 PM • nonstop
Ontario → Portland
5h 50m
5:55 AM - 9:45 AM • nonstop
Southwest Airlines
Nov 12 - Nov 15, Economy
Ontario → Portland
3h 50m
3:55 PM - 6:25 PM • nonstop
Ontario → Portland
5h 50m
5:55 AM - 9:45 AM • nonstop
Southwest Airlines
Nov 12 - Nov 15, Economy
Ontario → Portland
8h 20m
7:05 AM - 12:05 PM • nonstop
Ontario → Portland
5h 50m
5:55 AM - 9:45 AM • nonstop
Southwest Airlines
Nov 12 - Nov 15, Economy
Ontario → Portland
5h 45m
11:15 AM - 3:00 PM • nonstop
Ontario → Portland
5h 50m
5:55 AM - 9:45 AM • nonstop
Southwest Airlines
FAQs on Ontario to Portland Flights
What are the airports in Ontario?
ONT
What’s the most popular airline flying from ONT to PDX?
The most popular airline flying from Ontario to Portland are
Can I fly from ONT to PDX non-stop?
Yes, you can fly ONT to PDX non-stop on
Which airlines fly nonstop between Ontario and Portland?
The non-stop flights between Ontario and Portland are .
What’s the earliest departure time from ONT to PDX Airport?
The earliest flight leaves ONT at 7:05 am and lands in PDX - Portland International
What are the airports in Portland?
PDX
Can I make changes to my Ontario to Portland 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 ONT to PDX?
Read the fare rules of the Ontario to Portland 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 Ontario and Portland?
operate flights between Ontario and Portland
How long does a flight from Ontario to Portland take?
It takes approximately 2 hour to fly non-stop from ONT to PDX, which is 838.45 miles by air.
Which airlines provide the cheapest flights from Ontario (ONT) to Portland (PDX) ?
In the past couple of days, the cheapest tickets to PDX from ONT were found on WN : USD 398
Do I need a passport to fly between ONT and PDX?
No
What’s the latest departure time from ONT to PDX ?
The last flight leaves ONT at 7:05 pm
Ontario (ONT) to Portland (PDX): Airport Information
| Origin Airport | Ontario International , Ontario, US |
| Destination Airport | Portland International , Portland, US |
| Distance | 838 miles |
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