BLS AG is a Swiss railway company created by the 2006; 20 years ago (2006) merger ofBLS Lötschbergbahn andRegionalverkehr Mittelland AG. Its ownership is divided, with 55.8% of it owned by thecanton of Berne, and 21.7% by theSwiss Confederation. It has two main business fields: passenger traffic and infrastructure.

BLS has a subsidiary—BLS Cargo—which is responsible for all freight operations. BLS Cargo works in cooperation with the freight subsidiary ofDeutsche Bahn,Railion. However, the staff, apart from management and sales, is employed by BLS AG. Part of the BLS locomotive fleet is owned by BLS Cargo.

Another subsidiary,BLS Fernverkehr AG, is responsible for long-distance passenger transport. BLS Fernverkehr AG is wholly owned by BLS AG.

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In 2007 the new, 34.6-kilometre-long (21.5 mi)Lötschberg Base Tunnel opened, which is part of the 449 km of infrastructure owned and operated by BLS AG. The Lötschberg base tunnel was built by a wholly owned subsidiary,BLS AlpTransit AG. By mid-2007 this company handed over the base tunnel to BLS AG. In 2009 this company was renamedBLS Netz AG and the entire BLS infrastructure passed over to this company which is mainly owned by theSwiss Confederation, which has paid for most of the recent investments.

BLS AG owns the following railway lines:^[1]

• Bern–Neuchâtel railway line
• Moutier–Lengnau line
• Gürbetal railway line
• Lake Thun railway line
• Lötschberg railway line
• Spiez–Erlenbach–Zweisimmen railway line
• Solothurn–Moutier railway line
• Huttwil–Wolhusen railway line
• Langenthal–Huttwil railway

Also seeBern–Lötschberg–Simplon railway#Locomotives and multiple units

• 3 xBLS Re 420
• 33 xBLS Re 425
• 18 xBLS Re 465
• 28 xBLS RABe 515
• 36 xBLS RABe 525
• 13 xBLS RABe 526
• 30 xBLS RABe 528 (+ 28 under delivery)
• 25 xBLS RABe 535
• 21 xBLS RBDe 565
• 13 xBLS RBDe 566

BLS Cargo has the following rolling stock.

• 4 xBLS Re 425
• 2 xBLS Re 456
• 10 xBLS Re 465
• 15 xBLS Re 475
• 20 xBLS Re 485
• 10 xBLS Re 486
• 1 xBLS Am 845

In 2010, 28Stadler KISS EMUs were ordered; the first was delivered in March 2012. As of 2012^[update], BLS was planning to spend around 1·2bn SFr on new rolling stock by 2025, building a more standardised fleet with fewer different types of train.^[2] In 2017, 58Stadler FLIRT EMUs were ordered, expected to enter service between 2021 and 2026.^[3]

Since the merger, BLS has been the exclusive operator of the standard gauge part of theS-Bahn Bern. This includes open access services overSwiss Federal Railways (SBB) and STBSensetalbahn tracks. Since December 2007 BLS offers a newRegioExpress (RE) service over theold Lötschberg route while the SBB-operatedInterCity (IC), andEuroCity (EC) trains use thenew Lötschberg tunnel. As of the December 2024 timetable change,^[update] BLS operates the following services:

S-Bahn Bern^[4]

• S1Fribourg/Freiburg –Düdingen –Flamatt –Bern Europaplatz –Bern –Bern Wankdorf –Gümligen –Münsingen –Thun
• S2Laupen BE –Flamatt –Bern Europaplatz –Bern –Bern Wankdorf –Gümligen –Konolfingen –Langnau i.E.
• S21Thun –Steffisburg –Konolfingen
• S3Biel/Bienne –Lyss –Zollikofen –Bern Wankdorf –Bern –Bern Europaplatz –Belp
• S31 (Biel/Bienne –Lyss) –Münchenbuchsee –Zollikofen –Bern Wankdorf –Bern –Bern Europaplatz –Belp
• S35Kerzers –Lyss
• S36Lyss –Büren an der Aare
• S4Thun –Belp –Bern –Bern Wankdorf –Zollikofen –Burgdorf –Langnau i.E.
• S41Thun –Konolfingen –Hasle-Rüegsau –Burgdorf –Solothurn
• S42Thun –Konolfingen –Hasle-Rüegsau
• S44Thun –Belp –Bern –Bern Wankdorf –Burgdorf –Solothurn /Sumiswald-Grünen
• S45Ramsei –Sumiswald-Grünen
• S5Bern –Kerzers –Neuchâtel /Avenches
• S51Bern –Bern Stöckacker –Bern Brünnen Westside
• S52Bern –Bern Brünnen Westside –Kerzers –Murten/Morat (–Payerne) / (–Ins)
• S6Bern –Bern Europaplatz –Köniz –Schwarzenburg

S-Bahn Luzern

• S6Langnau i.E. –Wolhusen –Malters –Luzern
• S7Langenthal –Huttwil –Willisau –Wolhusen –Luzern (coupled withRE7 between Wolhusen and Luzern)
• S77Luzern –Malters –Wolhusen –Willisau

RegioExpress (RE)

• RE1Bern –Spiez –Kandersteg –Brig (–Domodossola)
• RE2Domodossola –Brig –Visp
• RE7Bern –Langnau i.E. –Luzern
• RE8Spiez –Zweisimmen
• RE9Spiez –Interlaken Ost
• RE11Biel/Bienne –Lyss –Spiez –Kandersteg –Brig

Regional trains (R)

• R11Spiez –Zweisimmen
• R12Spiez –Frutigen

InterRegio (IR)

• Bern –Olten
• Basel SBB –Delémont –Biel/Bienne
• Bern –Biel/Bienne
• Bern –Neuchâtel –La Chaux-de-Fonds

Car Shuttle Train (AV)

• AV 1Brig –Iselle di Trasquera
• AV 2Kandersteg –Iselle di Trasquera
• AV 3Kandersteg –Goppenstein

BLS Busland operates a fleet of 36 buses over a network that complements the passenger train services.^[5] The bus fleet consists of^{[citation needed]}

• Mercedes-Benz Citaro
• Volvo B7L

BLS owns and operatessteamers onLake Brienz andLake Thun under the BLS Navigation brand. These steamers utilise theInterlaken andThun ship canals.^{[citation needed]}

• Blümlisalp, paddle steamer built in 1906

• Rail transport in Switzerland

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