Express bus 9517 to Saint-Denis-PleyelorTaxi, regulated flat fare?
The short answer
These do not go to the same place, so price is not the comparison. The Taxi, regulated flat fare reaches Gare du Nord and Châtelet–Les Halles, on the right bank; the Express bus 9517 to Saint-Denis-Pleyel does not. Saint-Denis-Pleyel is outside Paris. It is the northern end of metro 14, which crosses the center to Châtelet, Gare de Lyon and beyond, on a second EUR 2.55 ticket.
The Express bus 9517 to Saint-Denis-Pleyel is quicker: 42 min against 45 min. The Taxi, regulated flat fare varies between 35 and 75 minutes.
Express bus 9517 to Saint-Denis-Pleyel: 05:20–00:15. Taxi, regulated flat fare: Runs all night.
Priced against each other
Whole-party totals · adult fares
What each costs for the whole party, in EUR. The cheaper of the two is marked on every row.
Travelers
Express bus 9517 to Saint-Denis-Pleyel
Taxi, regulated flat fare
Difference
1
€2.05
€56
€53.95
2
€4.10
€56
€51.90
3
€6.15
€56
€49.85
4
€8.20
€56
€47.80
5
€10.25
€61.50
€51.25
6
€12.30
€67
€54.70
7
€14.35
€72.50
€58.15
8
€16.40
€78
€61.60
Side by side
Where each one leaves you
bus · Île-de-France Mobilités express line, the Roissybus replacementExpress bus 9517 to Saint-Denis-Pleyel
From
Roissypôle bus station, stand E1, by the Terminal 3 / CDG 1 RER station; from Terminals 1 and 2 take the free CDGVAL to Terminal 3
To
Saint-Denis-Pleyel, north of Paris, for metro lines 14 and 13 and RER D
Luggage
The same coaches the Roissybus used, with luggage racks.
Runs
05:20–00:15
Journey
32–60 min
This is IDFM's named replacement for the Roissybus, and it does not go to Paris: it ends at Saint-Denis-Pleyel and carries on to Argenteuil. Budget EUR 2.05 for the bus plus EUR 2.55 for metro 14 and a change.
IDFM advertises "un trajet direct en 30 minutes". Its own timetable schedules 32 to 60 minutes from Roissypôle to Pleyel, typically about 42, because the bus calls at La Plaine and Stade de France on the way.
It leaves from Roissypôle, not from the terminals. From Terminal 2 that is nine minutes on the CDGVAL first; from Terminal 1, four.
The EUR 14 airport ticket is not valid on it. Neither is the EUR 2.55 metro ticket you will need afterwards.
taxi · Paris taxis, tariff set by ministerial arrêtéTaxi, regulated flat fare
From
The signposted taxi ranks outside each terminal
To
Any address in Paris; the fare depends on which bank of the Seine it is on
Luggage
Carried, with no supplement: the tariff allows none for Paris taxis.
Runs
All night
Journey
35–75 min
From five people the taxi is cheapest to the right bank: EUR 61.50 against EUR 70 on the RER B, EUR 78 for eight against EUR 112. An ordinary taxi seats four, so book a larger one for five or more; the booking fee still leaves it ahead.
To the left bank (EUR 65 flat), five people pay EUR 70.50 by taxi against EUR 70 by train — the taxi wins from six. The boundary is the river: 1st–4th, 8th–12th and 16th–20th arrondissements are right bank; 5th–7th and 13th–15th are left.
It is the same price at 03:00 as at noon. The arrêté has no night, Sunday or holiday variant for the flat fare, whatever the meter's tariff letter says.
Ask for a stop or a detour on the way and the flat fare no longer applies; the meter does. Waiting you request is charged on top.
No authority publishes a taxi journey time; 45 minutes is a working estimate, based on the N143 night bus's 42-minute timetabled run on the same road with no traffic. Allow more than an hour at peak.
Any Paris taxi must apply this fare, and the ranks are the place to find one. A driver quoting more than EUR 56 to a right-bank address for four people with bags is wrong.
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