CARRIS flags route change for Lisbon bus lines 793 and 34B

What happened

Lisbon transport operator CARRIS has posted a service-change notice covering bus lines 793 and 34B. The notice is titled "Alteração de percurso" (route change) and is listed under CARRIS service alterations for the Lisbon region.

The notice title references the date 17.09.2026. Beyond that, the published information is minimal: the description simply reads "Saber mais informação aqui" (find out more here), with no route map, stop list or timetable details visible in the notice text itself.

No further specifics — such as which stops are added, removed or relocated, or how long the change lasts — are stated in the material currently available.

Why it matters for international residents

Lines 793 and 34B are local Lisbon routes. If either is part of your regular commute, school run, or connection to a metro or train station, an altered path can change your stop, your walking distance, or your usual transfer point. Route changes are easy to miss. CARRIS notices are published in Portuguese and are often terse, so residents who do not read Portuguese fluently may not realise a change affects their daily trip until they are standing at a stop that is no longer served. * Because the notice gives no detail on the scope or duration of the change, it is not yet possible to say from this source alone whether this is a temporary diversion (for example for roadworks) or a permanent adjustment.

What to do next

Open the CARRIS notice directly and check whether your usual stops appear: https://www.carris.pt/viaje/alteracoes-de-servico/osdo2442026 Cross-check your journey using the CARRIS website or app route planner, and check the physical stop timetables on lines 793 and 34B for posted diversion or alteration notices. If you rely on one of these lines, allow extra time on your first trip after the change takes effect and confirm your nearest alternative stop before you travel. Check back on the CARRIS service-alterations page, as operators frequently update these notices with fuller details closer to the effective date.

This briefing is for general information only and is not legal, tax, medical, or immigration advice.

Sources

* CARRIS — "793, 34B | Alteração de percurso 17.09.2026": https://www.carris.pt/viaje/alteracoes-de-servico/osdo2442026