Frontier's UpFront Plus offers a guaranteed empty middle seat for extra comfort.
Frontier Airlines' Zone 1 boarding is available with carry-on purchase or special fare bundles.
Round-trip from | $99 (Frontier) |
---|---|
One-way from | $59 (Frontier) |
Popular in | March |
Cheapest in | September |
Average price | $148 |
Good round-trip deal | $119 or less |
Good one-way deal | $80 or less |
Fly from
Fly to
Route
Depart
Return
Price
PortlandOntario
PDX - ONT
PDXONT
Portland
Fri 8/8
11:13 am-1:36 pm
Nonstop2h 23m
Ontario
Sat 8/16
3:43 pm-6:06 pm
Nonstop2h 23m
PortlandOntario
PDX - ONT
PDXONT
Portland
Tue 8/12
12:25 pm-2:48 pm
Nonstop2h 23m
PortlandOntario
PDX - ONT
PDXONT
Portland
Tue 7/29
3:15 pm-9:38 pm
1 stop6h 23m
PortlandOntario
PDX - ONT
PDXONT
Portland
Tue 9/9
7:03 am-9:26 am
Nonstop2h 23m
PortlandOntario
PDX - ONT
PDXONT
Portland
Tue 8/5
7:15 am-1:34 pm
1 stop6h 19m
PortlandOntario
PDX - ONT
PDXONT
Portland
Thu 7/31
11:25 am-6:25 pm
2 stops7h 00m
PortlandOntario
PDX - ONT
PDXONT
Portland
Thu 11/20
6:00 am-12:37 pm
1 stop6h 37m
The price you pay for your flight from Portland to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 79 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, August is the cheapest month in which you can book a flight from Portland to Ontario (average of $246). Flying from Portland to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
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 afternoon, which can drop the price by up to 24% versus a flight in the evening.
Travelers seeking maximum savings on their Portland to Ontario flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from PDX to ONT are scheduled on a Thursday (8 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (4 on average).
Boarding
Entertainment
Comfort
Food
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Entertainment
Comfort
Food
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Entertainment
Comfort
Food
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Entertainment
Comfort
Food
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Entertainment
Comfort
Food
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Boarding
Entertainment
Comfort
Food
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$57 | Average$133 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$68 | Average$120 | FlexibilityNo cancel fee | On-time65% | |
Cheapest$93 | Average$286 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$108 | Average$289 | FlexibilityNo cancel fee | On-time85% | |
Cheapest$156 | Average$280 | FlexibilityNo cancel fee | On-time75% | |
Cheapest$166 | Average$356 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$188 | Average$305 | FlexibilityNo cancel fee | On-time63% |