Compare all timetables for the bus from Frankfurt am Main to Basel
Cheapest bus trips today
-
FlixBus4h 45m08:00 PMFrankfurt am MainCentral Station12:45 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/16/2025 8:00:00 PM to Central Station, Basel (Switzerland) arriving at 4/17/2025 12:45:00 AM. 50 Economy ticket for $31 per person are available. Travel duration is 4h 45m
-
FlixBus5h 25m08:15 AMFrankfurt am MainCentral Station1:40 PMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/16/2025 8:15:00 AM to Central Station, Basel (Switzerland) arriving at 4/16/2025 1:40:00 PM. 50 Economy ticket for $32 per person are available. Travel duration is 5h 25m
-
FlixBus4h 55m011:00 AMFrankfurt am MainCentral Station3:55 PMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/16/2025 11:00:00 AM to Central Station, Basel (Switzerland) arriving at 4/16/2025 3:55:00 PM. 50 Economy ticket for $33 per person are available. Travel duration is 4h 55m
-
BlaBlaCar Bus6h 30m012:30 PMFrankfurt am MainCentral Bus Station7:00 PMBaselSolothurnerstrasse Bus Station0EconomyA Bus from BlaBlaCar Bus goes from Central Bus Station, Frankfurt am Main (Germany) at 4/16/2025 12:30:00 PM to Solothurnerstrasse Bus Station, Basel (Switzerland) arriving at 4/16/2025 7:00:00 PM. 50 Economy ticket for $34 per person are available. Travel duration is 6h 30m
-
-
BlaBlaCar Bus6h 30m012:00 PMFrankfurt am MainCentral Bus Station3:30 PMStrasbourgPlace de l'Etoile0EconomyA Bus from BlaBlaCar Bus goes from Central Bus Station, Frankfurt am Main (Germany) at 4/24/2025 12:00:00 PM to Place de l'Etoile, Strasbourg (France) arriving at 4/24/2025 3:30:00 PM. 50 Economy ticket for $16 per person are available. Travel duration is 3h 30m
-
BlaBlaCar Bus2h 50m03:40 PMStrasbourgPlace de l'Etoile6:30 PMBaselSolothurnerstrasse Bus Station0EconomyA Bus from BlaBlaCar Bus goes from Place de l'Etoile, Strasbourg (France) at 4/24/2025 3:40:00 PM to Solothurnerstrasse Bus Station, Basel (Switzerland) arriving at 4/24/2025 6:30:00 PM. 50 Economy ticket for $7 per person are available. Travel duration is 2h 50m
Waiting Time 0h 10m -
Cheapest bus trips tomorrow
-
BlaBlaCar Bus6h 30m012:30 PMFrankfurt am MainCentral Bus Station7:00 PMBaselSolothurnerstrasse Bus Station0EconomyA Bus from BlaBlaCar Bus goes from Central Bus Station, Frankfurt am Main (Germany) at 4/17/2025 12:30:00 PM to Solothurnerstrasse Bus Station, Basel (Switzerland) arriving at 4/17/2025 7:00:00 PM. 50 Economy ticket for $34 per person are available. Travel duration is 6h 30m
-
FlixBus5h 45m02:50 AMFrankfurt am MainCentral Station8:35 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/17/2025 2:50:00 AM to Central Station, Basel (Switzerland) arriving at 4/17/2025 8:35:00 AM. 50 Economy ticket for $41 per person are available. Travel duration is 5h 45m
-
FlixBus5h 25m08:15 AMFrankfurt am MainCentral Station1:40 PMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/17/2025 8:15:00 AM to Central Station, Basel (Switzerland) arriving at 4/17/2025 1:40:00 PM. 50 Economy ticket for $42 per person are available. Travel duration is 5h 25m
-
FlixBus4h 55m011:00 AMFrankfurt am MainCentral Station3:55 PMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/17/2025 11:00:00 AM to Central Station, Basel (Switzerland) arriving at 4/17/2025 3:55:00 PM. 50 Economy ticket for $43 per person are available. Travel duration is 4h 55m
-
-
BlaBlaCar Bus6h 30m012:00 PMFrankfurt am MainCentral Bus Station3:30 PMStrasbourgPlace de l'Etoile0EconomyA Bus from BlaBlaCar Bus goes from Central Bus Station, Frankfurt am Main (Germany) at 4/24/2025 12:00:00 PM to Place de l'Etoile, Strasbourg (France) arriving at 4/24/2025 3:30:00 PM. 50 Economy ticket for $16 per person are available. Travel duration is 3h 30m
-
BlaBlaCar Bus2h 50m03:40 PMStrasbourgPlace de l'Etoile6:30 PMBaselSolothurnerstrasse Bus Station0EconomyA Bus from BlaBlaCar Bus goes from Place de l'Etoile, Strasbourg (France) at 4/24/2025 3:40:00 PM to Solothurnerstrasse Bus Station, Basel (Switzerland) arriving at 4/24/2025 6:30:00 PM. 50 Economy ticket for $7 per person are available. Travel duration is 2h 50m
Waiting Time 0h 10m -
Cheapest bus trips Friday
-
FlixBus5h 25m09:20 PMFrankfurt am MainCentral Station2:45 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/18/2025 9:20:00 PM to Central Station, Basel (Switzerland) arriving at 4/19/2025 2:45:00 AM. 50 Economy ticket for $37 per person are available. Travel duration is 5h 25m
-
FlixBus5h 5m010:45 PMFrankfurt am MainCentral Station3:50 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/18/2025 10:45:00 PM to Central Station, Basel (Switzerland) arriving at 4/19/2025 3:50:00 AM. 50 Economy ticket for $37 per person are available. Travel duration is 5h 5m
-
FlixBus5h 45m02:50 AMFrankfurt am MainCentral Station8:35 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/18/2025 2:50:00 AM to Central Station, Basel (Switzerland) arriving at 4/18/2025 8:35:00 AM. 50 Economy ticket for $50 per person are available. Travel duration is 5h 45m
-
FlixBus4h 45m08:00 PMFrankfurt am MainCentral Station12:45 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/18/2025 8:00:00 PM to Central Station, Basel (Switzerland) arriving at 4/19/2025 12:45:00 AM. 50 Economy ticket for $66 per person are available. Travel duration is 4h 45m
-
FlixBus4h 55m011:00 AMFrankfurt am MainCentral Station3:55 PMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/18/2025 11:00:00 AM to Central Station, Basel (Switzerland) arriving at 4/18/2025 3:55:00 PM. 50 Economy ticket for $68 per person are available. Travel duration is 4h 55m
-
-
BlaBlaCar Bus6h 30m012:00 PMFrankfurt am MainCentral Bus Station3:30 PMStrasbourgPlace de l'Etoile0EconomyA Bus from BlaBlaCar Bus goes from Central Bus Station, Frankfurt am Main (Germany) at 4/24/2025 12:00:00 PM to Place de l'Etoile, Strasbourg (France) arriving at 4/24/2025 3:30:00 PM. 50 Economy ticket for $16 per person are available. Travel duration is 3h 30m
-
BlaBlaCar Bus2h 50m03:40 PMStrasbourgPlace de l'Etoile6:30 PMBaselSolothurnerstrasse Bus Station0EconomyA Bus from BlaBlaCar Bus goes from Place de l'Etoile, Strasbourg (France) at 4/24/2025 3:40:00 PM to Solothurnerstrasse Bus Station, Basel (Switzerland) arriving at 4/24/2025 6:30:00 PM. 50 Economy ticket for $7 per person are available. Travel duration is 2h 50m
Waiting Time 0h 10m -
Cheapest bus trips Saturday
-
FlixBus5h 25m09:20 PMFrankfurt am MainCentral Station2:45 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/19/2025 9:20:00 PM to Central Station, Basel (Switzerland) arriving at 4/20/2025 2:45:00 AM. 50 Economy ticket for $33 per person are available. Travel duration is 5h 25m
-
FlixBus5h 5m010:45 PMFrankfurt am MainCentral Station3:50 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/19/2025 10:45:00 PM to Central Station, Basel (Switzerland) arriving at 4/20/2025 3:50:00 AM. 50 Economy ticket for $34 per person are available. Travel duration is 5h 5m
-
FlixBus5h 45m02:50 AMFrankfurt am MainCentral Station8:35 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/19/2025 2:50:00 AM to Central Station, Basel (Switzerland) arriving at 4/19/2025 8:35:00 AM. 50 Economy ticket for $35 per person are available. Travel duration is 5h 45m
-
BlaBlaCar Bus6h 30m012:30 PMFrankfurt am MainCentral Bus Station7:00 PMBaselSolothurnerstrasse Bus Station0EconomyA Bus from BlaBlaCar Bus goes from Central Bus Station, Frankfurt am Main (Germany) at 4/19/2025 12:30:00 PM to Solothurnerstrasse Bus Station, Basel (Switzerland) arriving at 4/19/2025 7:00:00 PM. 50 Economy ticket for $45 per person are available. Travel duration is 6h 30m
-
-
BlaBlaCar Bus6h 30m012:00 PMFrankfurt am MainCentral Bus Station3:30 PMStrasbourgPlace de l'Etoile0EconomyA Bus from BlaBlaCar Bus goes from Central Bus Station, Frankfurt am Main (Germany) at 4/24/2025 12:00:00 PM to Place de l'Etoile, Strasbourg (France) arriving at 4/24/2025 3:30:00 PM. 50 Economy ticket for $16 per person are available. Travel duration is 3h 30m
-
BlaBlaCar Bus2h 50m03:40 PMStrasbourgPlace de l'Etoile6:30 PMBaselSolothurnerstrasse Bus Station0EconomyA Bus from BlaBlaCar Bus goes from Place de l'Etoile, Strasbourg (France) at 4/24/2025 3:40:00 PM to Solothurnerstrasse Bus Station, Basel (Switzerland) arriving at 4/24/2025 6:30:00 PM. 50 Economy ticket for $7 per person are available. Travel duration is 2h 50m
Waiting Time 0h 10m -
Cheapest bus trips Sunday
-
FlixBus5h 45m02:50 AMFrankfurt am MainCentral Station8:35 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/20/2025 2:50:00 AM to Central Station, Basel (Switzerland) arriving at 4/20/2025 8:35:00 AM. 50 Economy ticket for $33 per person are available. Travel duration is 5h 45m
-
FlixBus5h 25m09:20 PMFrankfurt am MainCentral Station2:45 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/20/2025 9:20:00 PM to Central Station, Basel (Switzerland) arriving at 4/21/2025 2:45:00 AM. 50 Economy ticket for $44 per person are available. Travel duration is 5h 25m
-
FlixBus7h 10m010:30 AMFrankfurt am MainCentral Station5:40 PMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/20/2025 10:30:00 AM to Central Station, Basel (Switzerland) arriving at 4/20/2025 5:40:00 PM. 50 Economy ticket for $52 per person are available. Travel duration is 7h 10m
-
FlixBus4h 55m011:00 AMFrankfurt am MainCentral Station3:55 PMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/20/2025 11:00:00 AM to Central Station, Basel (Switzerland) arriving at 4/20/2025 3:55:00 PM. 50 Economy ticket for $52 per person are available. Travel duration is 4h 55m
-
FlixBus5h 25m08:15 AMFrankfurt am MainCentral Station1:40 PMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/20/2025 8:15:00 AM to Central Station, Basel (Switzerland) arriving at 4/20/2025 1:40:00 PM. 50 Economy ticket for $60 per person are available. Travel duration is 5h 25m
-
-
BlaBlaCar Bus6h 30m012:00 PMFrankfurt am MainCentral Bus Station3:30 PMStrasbourgPlace de l'Etoile0EconomyA Bus from BlaBlaCar Bus goes from Central Bus Station, Frankfurt am Main (Germany) at 4/24/2025 12:00:00 PM to Place de l'Etoile, Strasbourg (France) arriving at 4/24/2025 3:30:00 PM. 50 Economy ticket for $16 per person are available. Travel duration is 3h 30m
-
BlaBlaCar Bus2h 50m03:40 PMStrasbourgPlace de l'Etoile6:30 PMBaselSolothurnerstrasse Bus Station0EconomyA Bus from BlaBlaCar Bus goes from Place de l'Etoile, Strasbourg (France) at 4/24/2025 3:40:00 PM to Solothurnerstrasse Bus Station, Basel (Switzerland) arriving at 4/24/2025 6:30:00 PM. 50 Economy ticket for $7 per person are available. Travel duration is 2h 50m
Waiting Time 0h 10m -
Cheapest bus trips Monday
-
FlixBus5h 45m02:50 AMFrankfurt am MainCentral Station8:35 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/21/2025 2:50:00 AM to Central Station, Basel (Switzerland) arriving at 4/21/2025 8:35:00 AM. 50 Economy ticket for $48 per person are available. Travel duration is 5h 45m
-
FlixBus5h 25m09:20 PMFrankfurt am MainCentral Station2:45 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/21/2025 9:20:00 PM to Central Station, Basel (Switzerland) arriving at 4/22/2025 2:45:00 AM. 50 Economy ticket for $53 per person are available. Travel duration is 5h 25m
-
FlixBus4h 45m08:00 PMFrankfurt am MainCentral Station12:45 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/21/2025 8:00:00 PM to Central Station, Basel (Switzerland) arriving at 4/22/2025 12:45:00 AM. 50 Economy ticket for $78 per person are available. Travel duration is 4h 45m
-
FlixBus5h 25m08:15 AMFrankfurt am MainCentral Station1:40 PMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/21/2025 8:15:00 AM to Central Station, Basel (Switzerland) arriving at 4/21/2025 1:40:00 PM. 50 Economy ticket for $82 per person are available. Travel duration is 5h 25m
-
FlixBus7h 10m010:30 AMFrankfurt am MainCentral Station5:40 PMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/21/2025 10:30:00 AM to Central Station, Basel (Switzerland) arriving at 4/21/2025 5:40:00 PM. 50 Economy ticket for $82 per person are available. Travel duration is 7h 10m
-
-
BlaBlaCar Bus6h 30m012:00 PMFrankfurt am MainCentral Bus Station3:30 PMStrasbourgPlace de l'Etoile0EconomyA Bus from BlaBlaCar Bus goes from Central Bus Station, Frankfurt am Main (Germany) at 4/24/2025 12:00:00 PM to Place de l'Etoile, Strasbourg (France) arriving at 4/24/2025 3:30:00 PM. 50 Economy ticket for $16 per person are available. Travel duration is 3h 30m
-
BlaBlaCar Bus2h 50m03:40 PMStrasbourgPlace de l'Etoile6:30 PMBaselSolothurnerstrasse Bus Station0EconomyA Bus from BlaBlaCar Bus goes from Place de l'Etoile, Strasbourg (France) at 4/24/2025 3:40:00 PM to Solothurnerstrasse Bus Station, Basel (Switzerland) arriving at 4/24/2025 6:30:00 PM. 50 Economy ticket for $7 per person are available. Travel duration is 2h 50m
Waiting Time 0h 10m -
Cheapest bus trips Tuesday
-
FlixBus5h 45m02:50 AMFrankfurt am MainCentral Station8:35 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/22/2025 2:50:00 AM to Central Station, Basel (Switzerland) arriving at 4/22/2025 8:35:00 AM. 50 Economy ticket for $31 per person are available. Travel duration is 5h 45m
-
FlixBus5h 5m010:45 PMFrankfurt am MainCentral Station3:50 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/22/2025 10:45:00 PM to Central Station, Basel (Switzerland) arriving at 4/23/2025 3:50:00 AM. 50 Economy ticket for $36 per person are available. Travel duration is 5h 5m
-
FlixBus7h 10m010:30 AMFrankfurt am MainCentral Station5:40 PMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/22/2025 10:30:00 AM to Central Station, Basel (Switzerland) arriving at 4/22/2025 5:40:00 PM. 50 Economy ticket for $43 per person are available. Travel duration is 7h 10m
-
FlixBus4h 45m08:00 PMFrankfurt am MainCentral Station12:45 AMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/22/2025 8:00:00 PM to Central Station, Basel (Switzerland) arriving at 4/23/2025 12:45:00 AM. 50 Economy ticket for $44 per person are available. Travel duration is 4h 45m
-
FlixBus5h 25m04:45 PMFrankfurt am MainCentral Station10:10 PMBaselCentral Station0EconomyA Bus from FlixBus goes from Central Station, Frankfurt am Main (Germany) at 4/22/2025 4:45:00 PM to Central Station, Basel (Switzerland) arriving at 4/22/2025 10:10:00 PM. 50 Economy ticket for $49 per person are available. Travel duration is 5h 25m
-
-
BlaBlaCar Bus6h 30m012:00 PMFrankfurt am MainCentral Bus Station3:30 PMStrasbourgPlace de l'Etoile0EconomyA Bus from BlaBlaCar Bus goes from Central Bus Station, Frankfurt am Main (Germany) at 4/24/2025 12:00:00 PM to Place de l'Etoile, Strasbourg (France) arriving at 4/24/2025 3:30:00 PM. 50 Economy ticket for $16 per person are available. Travel duration is 3h 30m
-
BlaBlaCar Bus2h 50m03:40 PMStrasbourgPlace de l'Etoile6:30 PMBaselSolothurnerstrasse Bus Station0EconomyA Bus from BlaBlaCar Bus goes from Place de l'Etoile, Strasbourg (France) at 4/24/2025 3:40:00 PM to Solothurnerstrasse Bus Station, Basel (Switzerland) arriving at 4/24/2025 6:30:00 PM. 50 Economy ticket for $7 per person are available. Travel duration is 2h 50m
Waiting Time 0h 10m -
Frequency of bus connections between Frankfurt am Main and Basel
Facts about the bus from Frankfurt am Main to Basel
Compare all providers like FlixBus and BlaBlaCar Bus that travel 8 times every day by bus from Frankfurt am Main to Basel in one click! Book your bus ticket from Frankfurt am Main to Basel starting from $31!
Cheapest Bus | $31 |
Fastest Bus | 4h 45m |
Earliest Bus | 2:50 AM |
Latest Bus | 10:45 PM |
Daily Bus Routes | 8 Ø |
Distance | 182.6 miles |
Bus Companies | FlixBus and BlaBlaCar Bus |
Cheapest bus connections from Frankfurt am Main to Basel
Every day, 8 buses from 2 bus companies leave Frankfurt am Main for Basel: in the table below, you will find the cheapest prices for a bus ticket for this route, starting from 04/16/2025 and for the following days.
The cheapest time to travel from Frankfurt am Main to Basel
How to save money travelling from Frankfurt am Main to Basel
Book the ticket from Frankfurt am Main to Basel in advance! The earlier you book, the cheaper usually the price is. Also, you will be sure to have a place on the bus from Frankfurt am Main to Basel, compared instead if you buy it at the last moment, or directly at the station.
If you can, avoid travelling at peak times. Instead of weekend, try travelling during the week. Travelling in the evening or at night it’s also cheaper, and later buses from Frankfurt am Main to Basel are also emptier.All bus stations and stops in Frankfurt am Main and Basel
In the map below, you can see where to find all bus stations in Frankfurt am Main and Basel.
Compare the bus with other modes of transport
Service and Comfort on the bus from Frankfurt am Main to Basel
FAQs about the Frankfurt am Main to Basel bus
How much does a Frankfurt am Main Basel bus trip cost?
How much could I save by comparing buses from Frankfurt am Main to Basel?
On average, how many connections are available from Frankfurt am Main to Basel each day?
How long does a bus journey from Frankfurt am Main to Basel take?
What time is the first bus from Frankfurt am Main to Basel?
What time is the last bus from Frankfurt am Main to Basel?
Which bus companies operate the Frankfurt am Main Basel route?
Is there a direct bus between Frankfurt am Main and Basel?
What can I take with me on the Frankfurt am Main to Basel bus route?
What equipment is available for the Frankfurt am Main Basel bus route?
Available seat classes which are offered on the bus route Frankfurt am Main to Basel
The cheapest option available for your ticket, it usually comes with reclinable seats and AC.
More bus routes to Frankfurt am Main and to Basel
- Bus Routes to Frankfurt am Main
- Bus from Aschaffenburg to Frankfurt am Main
- Bus to Frankfurt am Main from Geneva
- Bus Hanover to Frankfurt am Main
- Bus Innsbruck to Frankfurt am Main
- Bus from Kaliningrad to Frankfurt am Main
- Bus Kiel - Frankfurt am Main
- Buses Kosice - Frankfurt am Main
- Buses Lisbon to Frankfurt am Main
- Buses from London to Frankfurt am Main
- Bus Manchester to Frankfurt am Main
- Buses from Marseille to Frankfurt am Main
- Buses from Metz to Frankfurt am Main
- Milan to Frankfurt am Main bus
- Bus Moscow - Frankfurt am Main
- Buses from Odesa to Frankfurt am Main
- Bus from Paris to Frankfurt am Main
- Buses to Frankfurt am Main from Prague
- From Rothenburg ob der Tauber to Frankfurt am Main bus
- Szczecin to Frankfurt am Main bus
- Bus to Frankfurt am Main from Zurich
- Bus Routes to Basel
- Bus from Baden to Basel
- Buses Belgrade - Basel
- Bus Birmingham to Basel
- Dresden to Basel bus
- Buses to Basel from Europa-Park Rust
- Bus Lausanne to Basel
- London to Basel bus
- From Marseille to Basel bus
- Buses Munich - Basel
- Buses Nantes to Basel
- Bus to Basel from Pescara
- Buses from Prague to Basel
- From Rome to Basel bus
- Bus from Rotterdam to Basel
- Bus Thun - Basel
- Bus from Toulouse to Basel
- Buses from Vevey to Basel
- Bus Vienna - Basel
- Bus to Basel from Zagreb
- Zurich to Basel bus