S4 (S4)

44 non-stop routes across 17 airports. Main hub: Ponta Delgada (Azores) (PDL).

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Live fares · PDL → YYZ

Main hubs for S4

Where S4 concentrates its operations — sorted by routes flown from each airport.

#1 · PDL 14 routes Ponta Delgada (Azores) Portugal #2 · TER 6 routes Terceira Portugal #3 · LIS 5 routes Lisbon Portugal #4 · OPO 2 routes Porto Portugal #5 · BOS 2 routes Boston USA

Where S4 flies most

Top destination countries by route count.

#1 34 routes Portugal Flights to Portugal #2 3 routes USA Flights to USA #3 3 routes Canada Flights to Canada #4 1 routes Spain Flights to Spain #5 1 routes Germany Flights to Germany #6 1 routes France Flights to France #7 1 routes Cape Verde Flights to Cape Verde

Related guides

Sibling pages from across Flightmaps — country aggregations, airport rosters, and visa context for S4.

All airports in Portugal Flights from Portugal Visa-free with Portugal passport Cheapest month to fly to Ponta Delgada (Azores)

Top S4 destinations

Ponta Delgada (Azores) · 14 routesTerceira · 6 routesLisbon · 5 routesSanta Maria (Azores) · 2 routesBoston · 2 routesFunchal · 2 routesPorto · 2 routesToronto · 2 routesHorta (Azores) · 1 routePico Island (Azores) · 1 routeBarcelona · 1 routeFaro · 1 route

S4 network at a glance

  • 44 non-stop routes
  • 17 airports served
  • Total network span: 99,898 km
  • Longest route: PDL-YYZ (4,511 km)
  • Shortest route: PDL-SMA (101 km)

Frequently asked questions about S4

  • How many routes does S4 operate?

    S4 (S4) operates 44 non-stop routes across 17 airports worldwide.

  • What is S4's main hub?

    S4's busiest hub is Ponta Delgada (Azores) (PDL) in Portugal, with 14 non-stop routes from this airport alone.

  • What is S4's longest route?

    S4's longest non-stop route is PDL-YYZ at 4,511 km.

  • Where does S4 fly the most?

    S4 flies most often to Portugal, with 34 routes serving destinations in Portugal.