S9 (Rhine-Main S-Bahn)

The S9 service of the S-Bahn Rhein-Main system bearing the KBS (German scheduled railway route) number 645.9. It is largely concurrent with the S8 service, diverging only to bypass Mainz (which the S8 serves locally).

City tunnel
The city tunnel is an underground, pure S-Bahn route used by almost all services (except for the S7 service which terminates at the central station). In a short section between Mühlberg and Offenbach-Kaiserlei a line parallel with the South Main railway is used.

History
This service was first introduced in 2000 to provide an alternative route to Wiesbaden via Frankfurt Airport skipping Rhineland-Palatinate and its capital Mainz.

Operation

 * 1) Wiesbaden Hbf – Hanau Hbf
 * 2) Wiesbaden Hbf – Frankfurt Hbf
 * 3) Wiesbaden Hbf – Offenbach Ost (sundays only)
 * 4) Flughafen Regionalbahnhof – Frankfurt Hbf (former S15 service)
 * 5) Flughafen Regionalbahnhof – Offenbach Ost (sundays only)

{| class="wikitable" summary="Stations of the S8 service" ! colspan="6" align="center" scope="col" | ! colspan="2" | Journey time ! scope="col" | Station ! scope="col" | Transfer ! scope="col" | S-Bahn service since ! 1 ! 2 ! 3 ! 4 ! 5 ! colspan="5" | ! colspan="13" align="center" class="hintergrundfarbe5" |

Wiesbaden
! colspan="13" align="center" class="hintergrundfarbe5" |
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | || ||
 * 0 ||
 * Wheelchair symbol.svg
 * Wiesbaden Hbf
 * 1978
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | || ||
 * 4 || +4
 * Wiesbaden Ost
 * 1978
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | || ||
 * 8 || +4
 * Mainz-Kastel
 * 1978
 * 1978
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | || ||
 * 8 || +4
 * Mainz-Kastel
 * 1978
 * Mainz-Kastel
 * 1978
 * 1978

Kreis Groß-Gerau
! colspan="13" align="center" class="hintergrundfarbe5" |
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | || ||
 * 15 || +7
 * Wheelchair symbol.svg
 * Mainz-Bischofsheim
 * 1978
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | || ||
 * 18 || +3
 * Rüsselsheim-Opelwerk
 * 1978
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | || ||
 * 21 || +3
 * Rüsselsheim
 * 1978
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | || ||
 * 24 || +3
 * Raunheim
 * 1978
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | || ||
 * 29 || +5
 * Kelsterbach
 * 1978
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | || ||
 * 24 || +3
 * Raunheim
 * 1978
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | || ||
 * 29 || +5
 * Kelsterbach
 * 1978
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | || ||
 * 29 || +5
 * Kelsterbach
 * 1978
 * 1978
 * 1978

Frankfurt am Main
! colspan="13" align="center" class="hintergrundfarbe5" |
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0"|
 * 35 || +6
 * Wheelchair symbol.svg
 * Frankfurt Flughafen Regionalbahnhof
 * 1978
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0"|
 * 37 || +2
 * Gateway Gardens
 * 2019
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0"|
 * 39 || +3
 * Wheelchair symbol.svg
 * Frankfurt Stadion
 * 1978
 * style="background-color:#006e34" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0" | ||style="background-color:#cef2e0"|
 * 42 || +3
 * Wheelchair symbol.svg
 * Frankfurt-Niederrad
 * 1978
 * ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" | ||
 * 46 || +4
 * Wheelchair symbol.svg
 * Frankfurt Hbf
 * 1978
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 47 || +5
 * Wheelchair symbol.svg
 * Frankfurt Hbf (tief)
 * 1978
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 49 || +2
 * Taunusanlage
 * 1978
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 51 || +2
 * Wheelchair symbol.svg
 * Hauptwache
 * 1978
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 52 || +1
 * Wheelchair symbol.svg
 * Konstablerwache
 * 1983
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 54 || +2
 * Ostendstraße
 * 1990
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 56 || +2
 * Wheelchair symbol.svg
 * Mühlberg
 * 1992
 * Wheelchair symbol.svg
 * Hauptwache
 * 1978
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 52 || +1
 * Wheelchair symbol.svg
 * Konstablerwache
 * 1983
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 54 || +2
 * Ostendstraße
 * 1990
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 56 || +2
 * Wheelchair symbol.svg
 * Mühlberg
 * 1992
 * 1990
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 56 || +2
 * Wheelchair symbol.svg
 * Mühlberg
 * 1992
 * 1992
 * 1992

Offenbach
! colspan="13" align="center" class="hintergrundfarbe5" |
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 59 || +3
 * Wheelchair symbol.svg
 * Offenbach-Kaiserlei
 * 1995
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 61 || +2
 * Wheelchair symbol.svg
 * Ledermuseum
 * 1995
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 63 || +2
 * Wheelchair symbol.svg
 * Marktplatz
 * 1995
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 66 || +3
 * Wheelchair symbol.svg
 * Offenbach Ost
 * 1995
 * 1995
 * style="background-color:#006e34" | || ||style="background-color:#cef2e0" | || ||style="background-color:#cef2e0" |
 * 66 || +3
 * Wheelchair symbol.svg
 * Offenbach Ost
 * 1995
 * 1995
 * 1995

Kreis Offenbach
! colspan="13" align="center" class="hintergrundfarbe5" |
 * style="background-color:#006e34" | || || || ||
 * 70 || +4
 * Wheelchair symbol.svg
 * Mühlheim
 * 1995
 * style="background-color:#006e34" | || || || ||
 * 72 || +2
 * Wheelchair symbol.svg
 * Mühlheim-Dietesheim
 * 1995
 * Wheelchair symbol.svg
 * Mühlheim-Dietesheim
 * 1995
 * 1995

Main-Kinzig-Kreis

 * style="background-color:#006e34" | || || || ||
 * 75 || +3
 * Wheelchair symbol.svg
 * Hanau-Steinheim
 * 1995
 * style="background-color:#006e34" | || || || ||
 * 78 || +3
 * Hanau Hbf
 * 1995
 * }
 * Hanau Hbf
 * 1995
 * }
 * 1995
 * }