
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $574 (United Airlines) |
One-way from | $403 (Kiwi.com) |
Popular in | June |
Cheapest in | November |
Average price | $973 |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Fri 12/26
6:35 pm-11:40 pm
2 stops23h 05m
Porto
Thu 1/8
12:30 pm-10:58 pm
2 stops16h 28m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Fri 12/26
4:05 pm-9:15 pm
3 stops23h 10m
Porto
Thu 1/8
10:20 am-3:29 pm
3 stops35h 09m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Mon 12/29
6:35 pm-10:25 pm
2 stops21h 50m
Porto
Sun 1/4
4:00 pm-11:43 pm
2 stops37h 43m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Mon 12/29
4:05 pm-11:40 am
2 stops37h 35m
Porto
Sun 1/4
6:55 am-7:18 pm
3 stops18h 23m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Thu 11/27
10:53 am-11:15 am
3 stops42h 22m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Wed 11/26
11:37 am-9:30 am
1 stop15h 53m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Wed 11/26
11:05 am-9:30 am
2 stops16h 25m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Thu 11/27
10:00 am-9:30 am
2 stops17h 30m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Wed 11/26
4:05 pm-9:15 pm
3 stops23h 10m
St. LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Fri 12/26
6:35 pm-10:25 pm
2 stops21h 50m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
Unlike in the evening, when flights are generally more expensive, you can save up to 39% on flights from St. Louis to Porto by exploring options for tickets at noon.
Crew
Boarding
Comfort
Entertainment
Food
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Crew
Boarding
Comfort
Entertainment
Food
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Crew
Boarding
Comfort
Entertainment
Food
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$549 | Average$1,214 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$751 | Average$1,186 | FlexibilityNo cancel fee | On-time69% |