
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $450 (United Airlines) |
One-way from | $313 (Kiwi.com) |
Popular in | May |
Cheapest in | January |
Average price | $484 |
Fly from
Fly to
Route
Depart
Return
Price
PortlandPorto
PDX - OPO
PDXOPO
Portland
Wed 2/25
1:25 pm-10:30 am
1 stop13h 05m
Porto
Tue 3/3
4:10 pm-11:25 am
1 stop27h 15m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Sat 2/21
11:59 pm-9:30 am
2 stops25h 31m
Porto
Fri 3/6
6:00 am-10:45 pm
2 stops24h 45m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Sun 3/1
12:40 am-3:25 pm
2 stops30h 45m
Porto
Mon 3/16
5:00 am-8:59 pm
2 stops22h 59m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Wed 2/25
7:00 am-9:30 am
2 stops18h 30m
Porto
Tue 3/3
12:35 pm-12:38 pm
3 stops32h 03m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Tue 2/24
5:05 am-9:30 am
2 stops20h 25m
Porto
Tue 3/3
12:35 pm-12:38 pm
3 stops32h 03m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Tue 4/7
1:05 pm-10:15 pm
1 stop25h 10m
Porto
Wed 4/15
7:10 pm-11:10 am
1 stop24h 00m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Tue 3/10
1:00 pm-2:45 pm
2 stops18h 45m
Porto
Tue 3/17
12:35 pm-9:52 pm
1 stop16h 17m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Wed 4/8
3:15 pm-11:25 pm
2 stops24h 10m
Porto
Wed 4/22
8:40 am-10:29 pm
2 stops21h 49m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Sat 4/18
3:30 pm-8:40 pm
3 stops45h 10m
PortlandPorto
PDX - OPO
PDXOPO
Portland
Tue 3/24
3:45 pm-3:45 pm
2 stops41h 00m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars |
To ensure you get the cheapest price possible for a flight from Portland to Porto, you should look to book at least 57 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 $470). Flying from Portland to Porto in May is currently the most expensive (average of $970). 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.
Overall
Food
Crew
Comfort
Entertainment
Boarding
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Food
Crew
Comfort
Entertainment
Boarding
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Food
Crew
Comfort
Entertainment
Boarding
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Food
Crew
Comfort
Entertainment
Boarding
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$494 | Average$957 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$498 | Average$892 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$644 | Average$1,045 | FlexibilityNo cancel fee | On-time69% |