
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $719 (Mytrip) |
One-way from | $298 (Kiwi.com) |
Popular in | October |
Cheapest in | January |
Average price | $1,195 |
Fly from
Fly to
Route
Depart
Return
PortlandPorto
PDX - OPO
PDXOPO
Portland
Mon 9/28
7:00 am-10:30 am
1 stop19h 30m
Porto
Fri 10/9
5:00 am-11:10 am
1 stop14h 10m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Fri 10/23
7:00 am-10:30 am
1 stop19h 30m
Porto
Mon 11/2
5:00 am-11:20 am
1 stop14h 20m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Fri 10/23
10:15 am-3:25 pm
2 stops21h 10m
Porto
Mon 11/2
5:00 am-11:20 am
1 stop14h 20m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Sat 7/11
10:40 pm-10:25 am
1 stop27h 45m
Porto
Fri 7/24
5:00 am-11:10 am
1 stop14h 10m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Sat 7/11
3:30 pm-10:25 am
2 stops34h 55m
Porto
Fri 7/24
5:00 am-11:10 am
1 stop14h 10m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Mon 8/17
7:00 am-10:30 am
1 stop19h 30m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Sun 8/16
7:00 am-10:25 am
1 stop19h 25m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Tue 9/1
11:17 pm-6:55 am
1 stop23h 38m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Tue 8/25
7:00 am-10:30 am
1 stop19h 30m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Wed 9/2
5:00 am-7:00 am
2 stops18h 00m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | 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 |
To ensure you get the cheapest price possible for a flight from Portland to Porto, you should look to book at least 38 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, January is the cheapest month in which you can book a flight from Portland to Porto (average of $484). Flying from Portland to Porto in October is currently the most expensive (average of $1,205). 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.
Food
Boarding
Crew
Comfort
Entertainment
Overall
Reviews
Anonymous,May 2026
SEA - KOA
Food
Boarding
Crew
Comfort
Entertainment
Overall
Reviews
Anonymous,May 2026
SEA - KOA
Food
Boarding
Crew
Comfort
Entertainment
Overall
Reviews
Anonymous,May 2026
SEA - KOA
Food
Boarding
Crew
Comfort
Entertainment
Overall
Reviews
Anonymous,May 2026
SEA - KOA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$494 | Average$1,070 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$498 | Average$892 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$502 | Average$1,150 | FlexibilityNo cancel fee | On-time69% |