Cheap flight from Ontario to Portland from $39
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Flights from Ontario to Portland
Cheap flight deals from Ontario to Portland
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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Round-trip
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One way
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Cheapest nonstop
ONT 2:19 PM2h 31mNonstopPDX 4:50 PMOntario - Portland | Thu, May 29 | Frontier Airlines
PDX 1:24 PM2h 32mNonstopSIN 3:56 PMPortland - Ontario | Tue, Jun 3 | Frontier Airlines$67 $20968% OFF68% OFF$209 $67 -
ONT 3:33 PM2h 25mNonstopPDX 5:58 PMOntario - Portland | Sat, Jun 14 | Frontier Airlines
PDX 1:19 PM2h 32mNonstopSIN 3:51 PMPortland - Ontario | Sat, Jun 21 | Frontier Airlines$78 $20963% OFF63% OFF$209 $78
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ONT 2:19 PM2h 31mNonstopPDX 4:50 PMOntario - Portland | Fri, May 30 | Frontier Airlines
PDX 1:24 PM2h 32mNonstopSIN 3:56 PMPortland - Ontario | Sat, Jun 7 | Frontier Airlines$81 $20961% OFF61% OFF$209 $81
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ONT 2:30 PM2h 25mNonstopPDX 4:55 PMOntario - Portland | Sun, Jun 1 | Frontier Airlines
PDX 11:13 AM2h 22mNonstopSIN 1:35 PMPortland - Ontario | Mon, Jun 2 | Frontier Airlines$9056% OFF$209 $90
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ONT 2:30 PM2h 25mNonstopPDX 4:55 PMOntario - Portland | Sun, Jun 8 | Frontier Airlines
PDX 11:13 AM2h 22mNonstopSIN 1:35 PMPortland - Ontario | Sun, Jun 15 | Frontier Airlines$11644% OFF$209 $116
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ONT 2:19 PM2h 31mNonstopPDX 4:50 PMOntario - Portland | Sun, May 25 | Frontier Airlines
PDX 11:04 AM2h 20mNonstopSIN 1:24 PMPortland - Ontario | Thu, May 29 | Frontier Airlines$13137% OFF$209 $131
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ONT 2:30 PM2h 25mNonstopPDX 4:55 PMOntario - Portland | Mon, Jun 2 | Frontier Airlines
PDX 1:19 PM2h 32mNonstopSIN 3:51 PMPortland - Ontario | Mon, Jun 9 | Frontier Airlines$13137% OFF$209 $131
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ONT 2:30 PM2h 25mNonstopPDX 4:55 PMOntario - Portland | Thu, Jun 5 | Frontier Airlines
PDX 1:19 PM2h 32mNonstopSIN 3:51 PMPortland - Ontario | Mon, Jun 9 | Frontier Airlines$13137% OFF$209 $131
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ONT 2:19 PM2h 31mNonstopPDX 4:50 PMOntario - Portland | Thu, May 22 | Frontier Airlines
PDX 1:24 PM2h 23mNonstopSIN 3:47 PMPortland - Ontario | Wed, May 28 | Frontier Airlines$15127% OFF$209 $151
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ONT 3:33 PM2h 25mNonstopPDX 5:58 PMOntario - Portland | Tue, Jun 24 | Frontier Airlines
PDX 11:13 AM2h 22mNonstopSIN 1:35 PMPortland - Ontario | Mon, Jun 30 | Frontier Airlines$17317% OFF$209 $173
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ONT 1:00 PM17h 25m1 stopsPDX Invalid DateOntario - Portland | Mon, May 5 | Normal Airline
PDX 3:00 PM6hNonstopONT 4:00 PMPortland - Ontario | Wed, May 7 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
ONT 3:33 PM2h 25mNonstopPDX 5:58 PMOntario - Portland | Sat, Jun 14 | Frontier Airlines$39 $8051% OFF51% OFF$80 $39
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ONT 3:33 PM2h 25mNonstopPDX 5:58 PMOntario - Portland | Sat, Jun 28 | Frontier Airlines$39 $8051% OFF51% OFF$80 $39
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ONT 3:33 PM2h 25mNonstopPDX 5:58 PMOntario - Portland | Tue, Jun 17 | Frontier Airlines$39 $8051% OFF51% OFF$80 $39
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ONT 2:19 PM2h 31mNonstopPDX 4:50 PMOntario - Portland | Thu, May 22 | Frontier Airlines$3951% OFF$80 $39
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ONT 2:30 PM2h 25mNonstopPDX 4:55 PMOntario - Portland | Mon, Jun 9 | Frontier Airlines$4050% OFF$80 $40
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ONT 3:33 PM2h 25mNonstopPDX 5:58 PMOntario - Portland | Sat, Jun 21 | Frontier Airlines$6025% OFF$80 $60
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ONT 2:30 PM2h 25mNonstopPDX 4:55 PMOntario - Portland | Thu, Jun 5 | Frontier Airlines$6518% OFF$80 $65
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ONT 2:19 PM2h 31mNonstopPDX 4:50 PMOntario - Portland | Fri, May 30 | Frontier Airlines$6518% OFF$80 $65
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ONT 2:19 PM2h 31mNonstopPDX 4:50 PMOntario - Portland | Sun, May 25 | Frontier Airlines$6618% OFF$80 $66
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ONT 2:19 PM2h 31mNonstopPDX 4:50 PMOntario - Portland | Thu, May 29 | Frontier Airlines$6617% OFF$80 $66
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ONT 1:00 PM17h 25m1 stopsPDX Invalid DateOntario - Portland | Mon, May 5 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Flight Info | Ontario to Portland
| Cheapest one-way flight price | $38 |
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| Cheapest round-trip ticket price | $67 |
| Off-season for travel | January |
| Peak season for travel | November |
| Flight distance | 12,470.35 km |
| Popular airline | Alaska Airlines |
When is the cheapest time to fly from Ontario to Portland?
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Frequently Asked Questions
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When are flight tickets from Ontario (ONT) to Portland (PDX) the cheapest?
Airlines adjust prices for flights from Ontario to Portland based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much do flights from Ontario (ONT) to Portland (PDX) cost?
According to Trip.com's data, the lowest price is around $221.
How to find a cheap flight from Ontario to Portland
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Ontario to Portland. Book your flights at the right time and save more.
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