Cheap flight from Portland to Ontario from Rp 639,780
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Flights from Portland to Ontario
Cheap flight deals from Portland to Ontario
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
PDX 11:042h 20mNonstopONT 13:24Portland - Ontario | Thu, May 29 | Frontier Airlines
SIN 14:302h 25mNonstopPDX 16:55Ontario - Portland | Thu, Jun 5 | Frontier AirlinesRp 1,164,075 Rp 2,807,93859% OFF59% OFFRp 2,807,938 Rp 1,164,075 -
PDX 12:182h 20mNonstopONT 14:38Portland - Ontario | Sat, Jun 14 | Frontier Airlines
SIN 09:432h 31mNonstopPDX 12:14Ontario - Portland | Sat, Jun 21 | Frontier AirlinesRp 1,166,385 Rp 2,807,93857% OFF57% OFFRp 2,807,938 Rp 1,166,385
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PDX 11:132h 22mNonstopONT 13:35Portland - Ontario | Thu, Jun 5 | Frontier Airlines
SIN 14:302h 25mNonstopPDX 16:55Ontario - Portland | Mon, Jun 9 | Frontier AirlinesRp 1,284,178 Rp 2,807,93854% OFF54% OFFRp 2,807,938 Rp 1,284,178
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PDX 12:182h 20mNonstopONT 14:38Portland - Ontario | Sat, Jun 21 | Frontier Airlines
SIN 09:432h 31mNonstopPDX 12:14Ontario - Portland | Sat, Jun 28 | Frontier AirlinesRp 1,284,17854% OFFRp 2,807,938 Rp 1,284,178
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PDX 12:182h 20mNonstopONT 14:38Portland - Ontario | Sat, Jun 28 | Frontier Airlines
SIN 09:432h 24mNonstopPDX 12:07Ontario - Portland | Sat, Jul 5 | Frontier AirlinesRp 1,298,03654% OFFRp 2,807,938 Rp 1,298,036
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PDX 12:172h 23mNonstopONT 14:40Portland - Ontario | Sat, Jul 12 | Frontier Airlines
SIN 15:352h 23mNonstopPDX 17:58Ontario - Portland | Sat, Jul 19 | Frontier AirlinesRp 1,311,89453% OFFRp 2,807,938 Rp 1,311,894
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PDX 11:132h 22mNonstopONT 13:35Portland - Ontario | Mon, Jun 2 | Frontier Airlines
SIN 09:432h 31mNonstopPDX 12:14Ontario - Portland | Mon, Jun 9 | Frontier AirlinesRp 1,328,06253% OFFRp 2,807,938 Rp 1,328,062
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PDX 11:042h 20mNonstopONT 13:24Portland - Ontario | Sun, May 25 | Frontier Airlines
SIN 09:432h 31mNonstopPDX 12:14Ontario - Portland | Mon, Jun 2 | Frontier AirlinesRp 1,365,01651% OFFRp 2,807,938 Rp 1,365,016
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PDX 11:042h 20mNonstopONT 13:24Portland - Ontario | Fri, May 30 | Frontier Airlines
SIN 09:432h 31mNonstopPDX 12:14Ontario - Portland | Sat, Jun 7 | Frontier AirlinesRp 1,367,32651% OFFRp 2,807,938 Rp 1,367,326
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PDX 11:042h 20mNonstopONT 13:24Portland - Ontario | Thu, May 22 | Frontier Airlines
SIN 14:192h 31mNonstopPDX 16:50Ontario - Portland | Sun, May 25 | Frontier AirlinesRp 2,499,06511% OFFRp 2,807,938 Rp 2,499,065
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PDX 13:0017h 25m1 stopsONT Invalid DatePortland - Ontario | Fri, May 16 | Normal Airline
ONT 15:006hNonstopPDX 16:00Ontario - Portland | Sun, May 18 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
PDX 12:172h 23mNonstopONT 14:40Portland - Ontario | Sat, Jul 5 | Frontier AirlinesRp 639,780 Rp 1,871,09466% OFF66% OFFRp 1,871,094 Rp 639,780
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PDX 12:182h 20mNonstopONT 14:38Portland - Ontario | Sat, Jun 14 | Frontier AirlinesRp 642,089 Rp 1,871,09466% OFF66% OFFRp 1,871,094 Rp 642,089
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PDX 12:182h 20mNonstopONT 14:38Portland - Ontario | Sat, Jun 28 | Frontier AirlinesRp 653,638 Rp 1,871,09465% OFF65% OFFRp 1,871,094 Rp 653,638
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PDX 12:182h 20mNonstopONT 14:38Portland - Ontario | Sat, Jun 21 | Frontier AirlinesRp 660,56765% OFFRp 1,871,094 Rp 660,567
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PDX 11:132h 22mNonstopONT 13:35Portland - Ontario | Fri, Jul 4 | Frontier AirlinesRp 660,56765% OFFRp 1,871,094 Rp 660,567
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PDX 11:132h 22mNonstopONT 13:35Portland - Ontario | Thu, Jun 5 | Frontier AirlinesRp 667,49664% OFFRp 1,871,094 Rp 667,496
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PDX 11:132h 22mNonstopONT 13:35Portland - Ontario | Mon, Jun 2 | Frontier AirlinesRp 813,00556% OFFRp 1,871,094 Rp 813,005
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PDX 11:042h 20mNonstopONT 13:24Portland - Ontario | Sun, May 25 | Frontier AirlinesRp 916,94051% OFFRp 1,871,094 Rp 916,940
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PDX 12:182h 20mNonstopONT 14:38Portland - Ontario | Tue, Jun 24 | Frontier AirlinesRp 1,355,77828% OFFRp 1,871,094 Rp 1,355,778
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PDX 12:182h 20mNonstopONT 14:38Portland - Ontario | Tue, Jun 17 | Frontier AirlinesRp 1,665,27411% OFFRp 1,871,094 Rp 1,665,274
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PDX 13:0017h 25m1 stopsONT Invalid DatePortland - Ontario | Fri, May 16 | 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.
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Frequently Asked Questions
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When are flight tickets from Portland (PDX) to Ontario (ONT) the cheapest?
Airlines adjust prices for flights from Portland to Ontario 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 Portland (PDX) to Ontario (ONT) cost?
According to Trip.com's data, the lowest price is around Rp 3,905,654.
How to find a cheap flight from Portland to Ontario
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 Portland to Ontario. Book your flights at the right time and save more.
Be flexible with your travel dates to get the cheapest Portland to Ontario ticket.
Tap "Date" in the flight search bar to browse the calendar and find airfare from Portland to Ontario for the next six months in 2025. If you're looking to fly within the next three months, the lowest fare is Rp 639780 for a one-way ticket on Sat, Jul 5.
Compare cheap Portland to Ontario flight deals from hundreds of airlines.
Our powerful search system compares prices from over 500 airlines. So you can find the cheapest flights from Portland to Ontario. The most affordable airline currently operating on this route is Frontier Airlines.
Set up a Price Alert to track fare drops.
Set up a Price Alert for your Portland to Ontario route to track ticket prices effortlessly—no need to check manually every day.
Don't miss out on cheap Portland to Ontario flight deals and promo codes.
Stay updated on the latest deals with Trip.com Deals and Promo Codes for cheap flights. Sign up for a free membership to unlock even more exclusive flight discounts.
Book early or wait unitl the last minute to fine the best fares.
It's always better to book early! Airlines typically release their lowest fares about a year before departure, so check as soon as flights become available. If you miss that window, you may still find great deals closer to your travel date.
Search for flights on the go.
For the best booking experience on the go, download Trip.com and search for cheap flights from Portland to Ontario to access exclusive deals just for you.
Flight Info | Portland to Ontario
| Cheapest one-way flight price | Rp 639,779 |
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| Cheapest round-trip ticket price | Rp 1,164,074 |
| Off-season for travel | March |
| Peak season for travel | February |
| Flight distance | 12,470.35 km |
| Popular airline | Alaska Airlines |
Plan Your Trip Around Ontario
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