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Flights from St Louis to Porto
There are no direct flights from St Louis to Porto. The fastest way is one stop via Boston or Montreal, about 11h 55m door to door (28 connections a week on current schedules).
No direct flights · 5 connection options From 11h 55m
St Louis to Porto at a glance
Fastest journey11h 55mVia Boston, on current schedules
Nonstop flightsNoneConnect via Boston or Montreal
Best ways to fly from St Louis to Porto
Ranked by how easy the connection is: one airline or alliance first (bags and connection protected), then the quickest self-transfer options.
1Search
STL Boston (BOS) OPO
Leg 1: Southwest Airlines, Republic Airlines, Envoy Air · Leg 2: TAP Air Portugal
Sat16:15 STL19:37 BOS3h 38m connection23:15 BOS10:10 OPOSouthwest Airlines + TAP Air Portugal
2Search
STL Montreal (YUL) OPO
Leg 1: Air Canada, Air Canada Jazz · Leg 2: Air Canada, Air Transat
Sat12:15 STL15:39 YUL4h 36m connection20:15 YUL07:00 OPOAir Canada Jazz + Air Canada
3Search
STL New York (EWR) OPO
Leg 1: United Airlines, Republic Airlines · Leg 2: TAP Air Portugal, United Airlines
Thu12:30 STL15:40 EWR4h 20m connection20:00 EWR07:21 OPOUnited Airlines
4Search
STL Toronto (YYZ) OPO
Leg 1: Air Canada, Air Canada Jazz · Leg 2: Air Transat
Mon14:45 STL17:28 YYZ6h 32m connection00:00 YYZ11:31 OPOAir Canada Jazz + Air Transat
Connections are computed from flights actually flown over the last 8 weeks, with at least 45 minutes to change on one airline and 2 hours on separate tickets. Times are local. The search shows live itineraries and exact times.
Good to know
- Distance
- 6,693 km4,156 miles
- Journey time
- 11h 55mon current schedules
- Time difference
- +6hPorto vs St Louis
- Currency in Porto
- EUR
- Airports
- STL → OPO
Flights from St Louis to Porto: questions answered
Are there direct flights from St Louis to Porto?
No. There is no nonstop service, so you will connect, most easily in Boston, Montreal and New York. Some connections are on one airline or alliance, so your bags and connection are protected on a single ticket.
How long is the flight from St Louis to Porto?
With one connection the journey usually takes around 11h 55m, depending on the layover. The straight-line distance is 6,693 km.
Where do you change planes between St Louis and Porto?
The best connecting points are Boston (BOS), Montreal (YUL), New York (EWR) and Toronto (YYZ). Compare one-ticket itineraries with self-transfer options in the search.
Which airports serve St Louis and Porto?
St Louis: St. Louis Lambert International Airport (STL). Porto: Francisco de Sá Carneiro Airport (OPO).
What is the time difference between St Louis and Porto?
Porto is 6 hours ahead of St Louis.





