On 1 July 2026 La Métropole Aix-Marseille-Provence, mid budget crisis, raised the A1 shuttle from €10 to €15 the single and €16 to €25 the return — actu.fr and La Provence both flagged it as among the most expensive airport shuttles in France, dearer per km than Paris–CDG. Blogs still quoting €10 are the trap; so is assuming the €16 and €25 tickets still exist.
TER trains do not stop inside MRS. The Vitrolles-Aéroport station is reached only by the €1.20 Lebus L13 from dock 5 of the bus station, and trains serve it roughly 06:24–22:03. Plan a late arrival or a 05:00 check-in on the 'train' and you will be standing on an empty platform.
The shuttle's last airport departure is 01:50 (May–Oct; ~01:00 in winter) and the first is 04:05; trains start at 06:24. A red-eye landing has taxis only — metered, at rates the airport never published. On the reverse side, between 01:00 and 04:30 the Saint-Charles transit hub is entered via the stairs at Place Victor-Hugo, not the normal forecourt.
The airport's own schedule says the Saint-Charles run takes 'between 30 and 50 minutes in normal traffic' and the small print warns times exclude traffic jams — the A7/Nord corridor does exactly that in rush hour and on grands départs weekends. A 07:00–20:00 bus every 10 minutes can still make you miss a 10:15 TGV.