Frontier's UpFront Plus offers empty middle seats for extra comfort.
Frontier Airlines offers Zone 1 boarding with carry-on purchase.
Most accurate provider | FlightHub 3 stars |
---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $103 (Cheapflightsfares) |
One-way from | $62 (Cheapflightsfares) |
Popular in | March |
Cheapest in | October |
Average price | $196 |
Good round-trip deal | $137 or less |
Good one-way deal | $88 or less |
Fly from
Fly to
Route
Depart
Return
Price
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Sat 10/18
7:10 am-9:30 am
Nonstop2h 20m
Portland
Sat 10/25
9:30 pm-11:49 pm
Nonstop2h 19m
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Sat 10/18
7:10 am-9:30 am
Nonstop2h 20m
Portland
Fri 10/24
9:30 pm-11:51 pm
Nonstop2h 21m
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Tue 10/21
7:10 am-9:30 am
Nonstop2h 20m
Portland
Mon 10/27
9:32 pm-11:56 pm
Nonstop2h 24m
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Wed 12/31
11:10 am-3:20 pm
1 stop4h 10m
Portland
Sat 1/3
5:30 am-9:45 am
1 stop4h 15m
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Tue 10/21
1:15 pm-6:09 pm
1 stop4h 54m
Portland
Sat 10/25
5:30 am-11:08 am
1 stop5h 38m
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Wed 12/31
11:10 am-3:20 pm
1 stop4h 10m
Portland
Sun 1/4
6:00 am-9:30 am
1 stop3h 30m
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Mon 10/20
7:55 pm-11:40 pm
1 stop3h 45m
Portland
Fri 10/24
5:30 am-10:30 am
1 stop5h 00m
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Fri 10/31
10:25 am-3:55 pm
1 stop5h 30m
Portland
Sun 11/2
5:10 am-12:35 pm
2 stops7h 25m
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Wed 12/24
10:44 am-4:27 pm
1 stop5h 43m
Portland
Tue 12/30
9:38 pm-11:59 pm
Nonstop2h 21m
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Tue 10/21
7:10 am-9:30 am
Nonstop2h 20m
Portland
Sat 10/25
2:30 pm-12:03 am
1 stop9h 33m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy2 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy2 stars | Trust Score*1 star | |
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy- | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy- | Trust Score*1 star |
The price you pay for your flight from Ontario to Portland may vary depending on when you book. For the best chance of a lower fare, look to book 83 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, November is the cheapest month in which you can book a flight from Ontario to Portland (average of $277). Flying from Ontario to Portland in March is currently the most expensive (average of $368). 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.
It’s typically best to fly out from Ontario to Portland at noon. Doing so could potentially save you 35% on the flight price compared to flying in the morning, which is usually more expensive.
Travelers seeking maximum savings on their Ontario to Portland flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Hannah,Aug 2025
SFO - SAN
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Hannah,Aug 2025
SFO - SAN
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Hannah,Aug 2025
SFO - SAN
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Hannah,Aug 2025
SFO - SAN
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Hannah,Aug 2025
SFO - SAN
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Hannah,Aug 2025
SFO - SAN
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$72 | Average$151 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$98 | Average$248 | FlexibilityNo cancel fee | On-time85% | |
Cheapest$137 | Average$228 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$153 | Average$264 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$156 | Average$273 | FlexibilityNo cancel fee | On-time75% | |
Cheapest$156 | Average$262 | FlexibilityNo cancel fee | On-time63% |