IRRI station

In December 2019, the flag stop was opened as PNR extended the Metro South Commuter trips by adding 5 more stations on the present commuter line. KiHa 59 series and KiHa 35 trainsets ply the route, with the former servicing the entire route to Tutuban and the latter going up to Alabang only. The station served as the southern terminus of the newly opened line.

Services were disrupted as soon as the lockdown caused by the COVID-19 pandemic took effect in mid-March 2020. As of October 2021, the service is still inactive. A passing loop was planned for possible use of locomotives in the station but only the switch was laid. This plan was not realized as of October 2021.^{[needs update]}

In January 2022, the railway switch and the steel stairs were dismantled by the PNR Crew along with DEL 5007 to be repurposed for the upcoming Inter-Provincial Commuter Train Service between San Pablo City in the province of Laguna and Lucena City in the province of Quezon. Only some dismantled rail pieces and railfrogs remain scattered in the area of the flagstop. On May 25, 2022, an inspection train hailing from Dela Rosa Station travelled to IRRI Flagstop with officials onboard to conduct certification of the railway from Manila to Los Banos for possible reopening of commuter services along with the San Pablo-Lucena Commuter Line. The trainset used consist of DHL-9003, PC 8303, with DEL 5007 at the end serving as a back engine. As of July 2022, only the line connecting Laguna and Quezon Province has been realized while the Dela Rosa-IRRI-San Pablo is still pending due to lack of available trains.^{[needs update]}

v t e PNR Metro Commuter
Legend
Governor Pascual Malabon Caloocan Caloocan Caloocan Depot 10th Avenue 5th Avenue Caloocan Manila Estero de Sunog Apog Solis Tutuban Railyard & Tayuman Locomotive Shed Tutuban Blumentritt Laon Laan España Estero de Valencia Santa Mesa Pasig River Estero de Pandacan Pandacan Estero de Pandacan Paco San Andres Vito Cruz Manila Makati Buendia Dela Rosa Pasay Road Estero de Tripa de Gallina EDSA Estero de Tripa de Gallina Makati Taguig Nichols FTI Taguig Parañaque Bicutan Parañaque Muntinlupa Sucat Sucat River Mangangate River Alabang Bayanan Creek Poblacion River Muntinlupa Magdaong River Tunasan Muntinlupa   Tunasan River   San Pedro San Isidro River San Pedro San Pedro Carmona Carmona Pacita Main Gate San Pedro Biñan Golden City 1 Biñan Biñan River Biñan Santa Rosa Silang-Santa Rosa River Santa Rosa Golden City 2 Santa Rosa Cabuyao Cabuyao River delta Cabuyao Gulod Cabuyao River delta Mamatid Banlic Cabuyao Calamba San Cristobal River San Juan River Calamba Pansol Masili Calamba Los Baños Dampalit Creek Los Baños Anos Creek College Molawin River IRRI Lucena-Legazpi

A new Los Baños station will be built further south of IRRI station at Brgy. Putho-Tuntungin under the PNR South Long Haul project, a reconstruction of the existing narrow-gauge rail line to standard gauge. It will be composed of three tracks, with two passing siding for each of its platforms, and the middle track reserved for express trains skipping the station.^{[2][dead link][3]}