Does the transport from the airport run on a Sunday night (about 9pm) going to Tetuan, Marina, or Arc de Triomf?
One of our guide books incorrectly said the airbus did not run on a Sunday, hence this question.
I live in Barcelona, and on Sunday there is metro until midnight and buses (nitbus) all night, saturdays and holidays all night too. However, you can find all the schedule for the metro in Barcelona here.
You will be fine going from the airport to any place at the hour you arrives.
As for your specific trajectory, I recommed you to take the renfe from the Airport to Passeig de Gracia, and make a connection to the
L2 direction *Badalona Pompeu Fabra* and leave in Tetuan (if want to go there), or from the airport take the renfe to Sants Estació, make a connection to the
L1 direction *Fondo* and leave in Arc de Triomf or Marina
this one runs a bit past midnight.
Cheaper. Runs till 23:50
Now the metro runs to the airport too. http://www.barcelona-tourist-guide.com/en/faq/airport/transport/metro/operating-hours-for-metro-to-barcelona-airport.html in general up to midnight.
There are http://www.renfe.com/EN/viajeros/cercanias/barcelona/index.html trains as well also up to midnight.
Past midnight there is some night bus but that wasn't the question :)
For easy travel, maybe not fastest.
(The AirBus runs 7 days of the week, however some guide books incorrectly says it does not run on a Sunday.)