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.
Most accurate provider | Mytrip 3 stars |
---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $117 (Cheapflightsfares) |
One-way from | $88 (Cheapflightsfares) |
Popular in | March |
Cheapest in | September |
Average price | $215 |
Good round-trip deal | $168 or less |
Good one-way deal | $97 or less |
Fly from
Fly to
Route
Depart
Return
Price
PortlandOntario
PDX - ONT
PDXONT
Portland
Tue 6/17
12:18 pm-2:38 pm
Nonstop2h 20m
Ontario
Sat 6/21
3:33 pm-5:58 pm
Nonstop2h 25m
PortlandOntario
PDX - ONT
PDXONT
Portland
Tue 5/20
9:41 pm-11:57 pm
Nonstop2h 16m
Ontario
Thu 5/22
2:19 pm-4:50 pm
Nonstop2h 31m
PortlandOntario
PDX - ONT
PDXONT
Portland
Mon 5/19
9:41 pm-11:57 pm
Nonstop2h 16m
Ontario
Wed 5/21
7:30 am-9:50 am
Nonstop2h 20m
PortlandOntario
PDX - ONT
PDXONT
Portland
Wed 5/28
11:35 am-6:23 pm
1 stop6h 48m
Ontario
Fri 5/30
7:25 pm-11:57 pm
1 stop4h 32m
PortlandOntario
PDX - ONT
PDXONT
Portland
Tue 5/13
6:45 am-10:10 am
1 stop3h 25m
Ontario
Fri 5/16
4:55 pm-10:15 pm
1 stop5h 20m
PortlandOntario
PDX - ONT
PDXONT
Portland
Sat 5/17
5:35 am-11:04 am
1 stop5h 29m
Ontario
Sat 5/17
4:57 pm-10:01 pm
1 stop5h 04m
PortlandOntario
PDX - ONT
PDXONT
Portland
Thu 6/12
3:42 pm-10:45 pm
1 stop7h 03m
Ontario
Tue 6/17
6:00 am-12:22 pm
1 stop6h 22m
PortlandOntario
PDX - ONT
PDXONT
Portland
Thu 5/29
1:25 pm-6:25 pm
1 stop5h 00m
Ontario
Mon 6/2
6:00 am-10:53 am
1 stop4h 53m
PortlandOntario
PDX - ONT
PDXONT
Portland
Mon 6/23
11:13 am-1:35 pm
Nonstop2h 22m
PortlandOntario
PDX - ONT
PDXONT
Portland
Mon 5/19
9:41 pm-11:57 pm
Nonstop2h 16m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy2 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy- | Trust Score*3 stars |
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 73 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 20% versus a flight in the evening.
Travelers seeking maximum savings on their Portland to Ontario flight should consider departing on Saturday afternoons 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 Tuesday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).
In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.
If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).
Entertainment
Boarding
Crew
Overall
Food
Comfort
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Crew
Overall
Food
Comfort
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Crew
Overall
Food
Comfort
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Crew
Overall
Food
Comfort
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Crew
Overall
Food
Comfort
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Crew
Overall
Food
Comfort
Reviews
James,Apr 2025
LAX - SFO
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$58 | Average$130 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$68 | Average$120 | FlexibilityNo cancel fee | On-time65% | |
Cheapest$98 | Average$338 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$128 | Average$329 | FlexibilityNo cancel fee | On-time85% | |
Cheapest$156 | Average$279 | FlexibilityNo cancel fee | On-time75% | |
Cheapest$171 | Average$352 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$192 | Average$323 | FlexibilityNo cancel fee | On-time63% |