Zurich–Zug–Lugano–Milan.

• Hourly Zurich–Zug–Milan services at times of high demand in one direction. The Zug–Milan journey time will be 2 hours 50 minutes. New Giruno trains will operate services.
• The trains will depart from Zug towards Ticino on the hour and at 30 minutes past the hour. The journey time from Zug–Lugano will be reduced to less than 1 hour 30 minutes.
• The IR46 will provide a two hourly direct service from Zurich–Zug via the Gotthard panoramic route to Locarno in cooperation with SOB. As engineering work has been delayed due to the coronavirus situation, full implementation will not take place until 5 April 2021. That means that SOB trains will only run to Bellinzona and will stop for nearly 20 minutes in Airolo. The services will be operated by new Traverso trains.

Zug–Luzern–Zürich HB–Zürich Flughafen (–Konstanz/St.Gallen).

• The IR70 will depart from Zug towards Luzern at 31 minutes past the hours and towards Zurich at 29 minutes past the hour. The train will no longer stop in Thalwil. Passengers for Thalwil should use the IR75 or the S24. After a stop of nearly 20 minutes at Zürich HB, the IR70 will continue as IR13 towards St. Gallen–Chur with a stop at Zürich Flughafen. The services will be operated by long-distance double-deckers.
• The direct IR75 service to Konstanz will continue to operate. Rotkreuz will therefore continue to have direct services to Flughafen Zürich. The IR70, IR75 and S24 will provide Zug with four direct services to the airport every hour.

Aarau–Rotkreuz–Arth-Goldau.

At the weekend, direct trains will run between Aarau–Rotkreuz–Arth-Goldau, with connections to long-distance services to/from Ticino at Arth-Goldau. The trains will depart Rotkreuz at 07:27 and 08:27. This means that passengers from Rotkreuz heading south will no longer need to travel via Zug.

Zug–Erstfeld.

• The S2 will continue to run direct between Zug and Arth Goldau.
• The S2 will run half-hourly from Baar Lindenpark to Walchwil on Mondays to Saturdays. This will provide passengers with good connections to long-distance services every half hour. Walchwil Hörndli will be served by the S2 every half hour.
• The S2 will run hourly to and from Erstfeld on Mondays to Sundays.

Baar–Luzern.

The half-hourly S1 stop in Hünenberg Chämleten for services towards Zug will be moved to 26 minutes past the hour and 54 minutes past the hour (Monday to Saturdays).

Muri–Zug.

A new additional train will run at peak time from Muri to Zug via Rotkreuz and Cham. Departure from Muri at 06:42, Rotkreuz at 07:03, Cham at 07:09 and arrival in Zug at 07:14.

Zurich–Arth-Goldau–Lugano–Milan.

• New hourly Zurich–Arth-Goldau–Milan services at times of high demand in one direction. The Arth-Goldau–Milan journey time will be reduced to 2 hours 32 minutes. Services will be operated by new Giruno trains.
• Half-hourly Arth-Goldau–Lugano services will run at times of high demand in one direction. The journey time will be reduced by around 10 minutes.
• New departure times from Arth-Goldau: IC services towards Ticino at 49 minutes past the hour, EC services towards Milan at minute 18 past the hours. 
• Zurich–Arth-Goldau: introduction of a continuous half-hourly service on weekdays and additional services at the weekend. 
• Direct services will operate alternately from Basel (IR26) and Zurich (IR46) to Locarno via the Gotthard panoramic route and will be run in cooperation with SOB. As engineering work had been delayed due to the coronavirus situation, full implementation will not take place until 5 April 2021. Until then, SOB trains will only run to Bellinzona and will stop for almost 20 minutes in Airolo. Services will be operated by new Traverso trains.

Zug–Erstfeld.

Direct Baar Lindenpark–Zug–Arth-Goldau–Erstfeld S2 services will be restored. There will be no need to change in Rotkreuz.

Lucerne–Brunnen.

• More evening services will be provided on the S3 Luzern–Brunnen. It will run to Küssnacht am Rigi every 30 minutes until the end of operations and every 60 minutes to Brunnen. The S3 will now run at regular intervals until 00:06 (6 minutes past the hour from Luzern).
• The Luzern–Küssnacht lakeside line will be closed from 6 April to 19 April 2021. This will affect the S3 and SOB’s Voralpenexpress (VAE). Rail replacement buses will substitute the S3, and the VAE trains will be diverted via Rotkreuz.

Zurich–Flüelen–Lugano.

• The first IC towards Zürich HB will depart Flüelen earlier (at 05:51). Arrival at Zürich HB is at 06:55.
• Six IC trains will continue to stop in Flüelen:
  • New departure times from Flüelen to Zurich: 05:51 / 08:52 / 16:52
  • New departure times from Flüelen towards Lugano: 07:06 / 09:06 / 18:06 
• Direct services will operate alternately from Basel (IR26) and Zurich (IR46) to Locarno via the Gotthard panoramic route and will be run in cooperation with SOB. The stops served in the canton of Uri will be Flüelen, Altdorf(?)Show note AltdorfThe IR26/46 will only stop in Altdorf from 13 June 2021. Until then, rail replacement buses will continue to run Flüelen–Altdorf–Erstfeld.Close note, Erstfeld and Göschenen. Services will be operated by SOB’s new Traverso trains.
• The first IR26 / IR46 services from Erstfeld at 05:31 / 06:31 will call at all stations to Arth-Goldau and then continue to Basel SBB / Zürich HB.
• As engineering work has been delayed due to the coronavirus situation, the direct IR26 and 46 trains will only run to Locarno from 5 April 2021. Until then, trains will only run to Bellinzona and will stop for nearly 20 minutes in Airolo. 

Erstfeld–Zug.

• The S2 will run directly on the Baar Lindenpark–Zug–Arth-Goldau–Erstfeld route. Passengers will no longer need to change in Rotkreuz. The first S2 will depart Erstfeld at 05:01 running towards Arth-Goldau–Zug–Baar Lindenpark. 
• The IR26 which departs Erstfeld at 05:31 and runs to Luzern will stop at all stations to Arth-Goldau and replace the S2 which previously departed Erstfeld at 05:20. 
• The S2 will only stop in Altdorf from 13 June 2021. Until then, rail replacement buses will continue to run Flüelen–Altdorf–Erstfeld.

Basel–Olten–Luzern–Lugano.

• At 12:18 and 16:18, there will be new direct services from Lucerne to Milan (direct trains from Milan arrive at 11:41 and 13:41). This means that Lucerne will receive a second international service.
• When engineering works on the eastern side of Lake Zug are complete, Lucerne will once again have two-hourly services through the Gotthard Base Tunnel, and these will continue through the Ceneri Base Tunnel. The trains will run directly to Lugano every 2 hours through the Gotthard Base Tunnel, starting at 06:18. Connections will be available at Arth-Goldau to the Treno Gottardo via the Gotthard mountain route to Bellinzona–Locarno.
• With the opening of the Ceneri Base Tunnel, journey times to Lugano will be reduced to 1 hour 40 minutes (previously 1 hour 59 minutes). Services will be operated by new Giruno trains.

Basel–Olten–Luzern–Altdorf–Göschenen–Locarno.

• SOB will provide a new early service from Luzern at 04:54 to Olten (dep. 05:28/05:30) and Basel (arrival at 05:56).
• Operations on the Gotthard mountain route will be taken over by SOB. The services will be run with new Traverso trains, departing Luzern every two hours (07:18) via Altdorf–Göschenen and providing a direct link to Locarno. A connection to the IC to Lugano is provided at Arth-Goldau. As engineering work has been delayed due to the coronavirus situation, the direct IR26 and 46 trains will only run to Locarno from 5 April 2021. Until then, trains will only run to Bellinzona and will stop for nearly 20 minutes in Airolo. 
• The journey time from Luzern to Locarno via the Gotthard mountain route will therefore be reduced to 3 hours 8 minutes (from 3 hours 39 minutes currently).

Luzern–Zurich Airport.

• The direct service from Luzern to Flughafen Zürich on the hour (IR 70) will now depart at 9 minutes past the hour and thus enable better connections from Engelberg and Luzern West to Flughafen Zürich, connecting to St. Gallen–Chur. 
• The IR70 no longer stops in Thalwil. 
• The Luzern–Zürich HB journey time will be reduced by 4 minutes to 41 minutes. Services will be operated by long-distance double-decker trains. 
• The IR75 will continue to run Luzern–Zug–Zurich–Winterthur–Weinfelden–Konstanz. That means that there will be two direct Luzern–Flughafen Zürich services each hour.

RE Olten–Luzern.

The RE Olten–Luzern will now also stop in Rothenburg. This is an improvement in particular for commuters from Wauwil, Nebikon, Reiden and Zofingen. However, the service will no longer stop in Aarburg-Oftringen. Since the S29 does not run this late in the evening, the REs which depart Luzern at 22:05/23:05/00:05 will stop additionally at Aarburg-Oftringen. 

Luzern–Arth-Goldau–Brunnen(–Erstfeld).

• From 20:38 until the end of service, the S3 will run every 30 minutes between Luzern and Küssnacht am Rigi and continue to Brunnen every 60 minutes. The train departing Luzern at 23:06 will form part of the regular-interval service. There will also be another S3 from Luzern to Brunnen at 00:06.
• Due to engineering work, the Luzern–Küssnacht am Rigi lakeside line will be closed to services from 6 April to 19 April 2021. This will affect the S3 and SOB’s Voralpenexpress (VAE). Rail replacement buses will substitute the S3, and the VAE trains will be diverted via Rotkreuz.

Sursee–Zofingen–Olten–Aarau–Turgi.

The S29 will now run every 30 minutes between Zofingen and Turgi.