
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $121 (Cheapflightsfares) |
One-way from | $69 (United Airlines) |
Popular in | December |
Cheapest in | August |
Average price | $180 |
Fly from
Fly to
Route
Depart
Return
Price
PortlandDenver
PDX - DEN
PDXDEN
Portland
Tue 2/24
7:05 am-10:42 am
Nonstop2h 37m
Denver Intl
Sat 2/28
11:38 am-1:38 pm
Nonstop3h 00m
PortlandDenver
PDX - DEN
PDXDEN
Portland
Fri 2/27
7:05 am-10:42 am
Nonstop2h 37m
Denver Intl
Wed 3/4
11:38 am-1:38 pm
Nonstop3h 00m
PortlandDenver
PDX - DEN
PDXDEN
Portland
Sat 3/14
3:52 pm-11:59 pm
1 stop7h 07m
Denver Intl
Wed 3/18
6:03 pm-7:52 pm
Nonstop2h 49m
PortlandDenver
PDX - DEN
PDXDEN
Portland
Mon 2/23
7:05 am-10:42 am
Nonstop2h 37m
Denver Intl
Sat 2/28
11:38 am-1:38 pm
Nonstop3h 00m
PortlandDenver
PDX - DEN
PDXDEN
Portland
Wed 2/25
3:59 pm-11:25 pm
1 stop6h 26m
Denver Intl
Wed 3/4
6:20 pm-11:53 pm
1 stop6h 33m
PortlandDenver
PDX - DEN
PDXDEN
Portland
Tue 2/24
5:30 am-12:15 pm
1 stop5h 45m
Denver Intl
Tue 3/3
6:20 pm-11:53 pm
1 stop6h 33m
PortlandDenver
PDX - DEN
PDXDEN
Portland
Sat 2/21
1:32 pm-9:06 pm
1 stop6h 34m
Denver Intl
Tue 2/24
6:20 pm-11:53 pm
1 stop6h 33m
PortlandDenver
PDX - DEN
PDXDEN
Portland
Wed 3/11
5:02 pm-10:30 pm
1 stop4h 28m
Denver Intl
Tue 3/17
7:40 pm-11:59 pm
1 stop5h 19m
PortlandDenver
PDX - DEN
PDXDEN
Portland
Tue 2/17
2:31 pm-11:59 pm
1 stop8h 28m
Denver Intl
Thu 2/19
11:38 am-1:38 pm
Nonstop3h 00m
PortlandDenver
PDX - DEN
PDXDEN
Portland
Sun 4/26
2:45 pm-6:29 pm
Nonstop2h 44m
Denver Intl
Fri 5/8
6:07 pm-7:54 pm
Nonstop2h 47m
To ensure you get the cheapest price possible for a flight from Portland to Boulder, you should look to book at least 29 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, February is the cheapest month in which you can book a flight from Portland to Boulder (average of $46). Flying from Portland to Boulder in July is currently the most expensive (average of $98). 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.
Unlike at noon, when flights are generally more expensive, you can save up to 12% on flights from Portland to Boulder by exploring options for tickets in the evening.
Travelers seeking maximum savings on their Portland to Boulder flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from PDX to BD9 are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).
Crew
Food
Comfort
Overall
Boarding
Entertainment
Reviews
Anonymous,Jan 2026
STS - LAX
Crew
Food
Comfort
Overall
Boarding
Entertainment
Reviews
Anonymous,Jan 2026
STS - LAX
Crew
Food
Comfort
Overall
Boarding
Entertainment
Reviews
Anonymous,Jan 2026
STS - LAX
Crew
Food
Comfort
Overall
Boarding
Entertainment
Reviews
Anonymous,Jan 2026
STS - LAX
Crew
Food
Comfort
Overall
Boarding
Entertainment
Reviews
Anonymous,Jan 2026
STS - LAX
Crew
Food
Comfort
Overall
Boarding
Entertainment
Reviews
Anonymous,Jan 2026
STS - LAX
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$56 | Average$148 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$88 | Average$244 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$88 | Average$200 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$138 | Average$378 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$147 | Average$260 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$153 | Average$324 | FlexibilityNo cancel fee | On-time63% |