Round-trip from | $887 (American Airlines) |
---|---|
Popular in | June |
Cheapest in | November |
Average price | $1,410 |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Wed 10/29
11:49 am-1:10 pm
2 stops20h 21m
Porto
Wed 11/5
6:00 am-1:55 pm
1 stop13h 55m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Wed 10/29
11:46 am-7:40 am
2 stops14h 54m
Porto
Wed 11/5
8:20 am-8:16 pm
2 stops17h 56m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Tue 10/28
11:45 am-11:40 am
2 stops18h 55m
Porto
Sat 11/8
6:00 am-3:26 pm
2 stops39h 26m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Thu 10/30
1:30 pm-10:50 am
2 stops16h 20m
Porto
Tue 11/4
5:00 am-11:02 pm
2 stops24h 02m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Tue 9/30
9:15 am-11:30 am
2 stops20h 15m
Porto
Wed 10/15
6:00 am-7:38 pm
2 stops19h 38m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Fri 9/19
9:46 am-7:35 am
2 stops15h 49m
Porto
Sat 9/27
8:15 am-8:32 pm
2 stops18h 17m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Sat 7/19
10:45 am-10:10 pm
2 stops29h 25m
Porto
Sat 7/26
6:25 am-9:52 am
3 stops33h 27m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Sat 7/19
6:04 pm-3:35 pm
2 stops15h 31m
Porto
Sat 7/26
6:05 am-8:25 pm
2 stops20h 20m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Sun 11/2
1:55 pm-11:45 am
2 stops15h 50m
Porto
Thu 11/20
8:20 am-9:41 pm
2 stops19h 21m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Thu 9/25
1:30 pm-5:05 pm
2 stops21h 35m
Currently, January is the cheapest month in which you can book a flight from St. Louis to Porto (average of $523). Flying from St. Louis to Porto in June is currently the most expensive (average of $1,040). 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 in the afternoon, when flights are generally more expensive, you can save up to 36% on flights from St. Louis to Porto by exploring options for tickets at noon.
In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.
If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).
Food
Entertainment
Overall
Crew
Boarding
Comfort
Reviews
Anonymous,Jun 2025
AMS - BOS
Food
Entertainment
Overall
Crew
Boarding
Comfort
Reviews
Anonymous,Jun 2025
AMS - BOS
Food
Entertainment
Overall
Crew
Boarding
Comfort
Reviews
Anonymous,Jun 2025
AMS - BOS
Food
Entertainment
Overall
Crew
Boarding
Comfort
Reviews
Anonymous,Jun 2025
AMS - BOS
Food
Entertainment
Overall
Crew
Boarding
Comfort
Reviews
Anonymous,Jun 2025
AMS - BOS
Food
Entertainment
Overall
Crew
Boarding
Comfort
Reviews
Anonymous,Jun 2025
AMS - BOS
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$612 | Average$1,250 | FlexibilityNo cancel fee | On-time76% | |
Cheapest$713 | Average$963 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$751 | Average$1,132 | FlexibilityNo cancel fee | On-time69% |