Towards the beginning of the film when Neeson's character is walking through Grand Central Terminal, there is a poster for Paddington 2, which shared its US release date with The Commuter on January 12th.
Although they share no scenes here, Vera Farmiga and Patrick Wilson's third collaboration, following The Conjuring (2013) and The Conjuring 2 (2016).
Fourth collaboration between Jaume Collet-Serra and Liam Neeson, following Unknown (2011), Non-Stop (2014) and Run All Night (2015).
The second film to feature Vera Farmiga and an incident on a commuter train, following Source Code (2011).
Liam Neeson and Sam Neill were both contenders for the role of James Bond in GoldenEye (1995), which eventually went to Irish actor Pierce Brosnan. Neill was also considered for Bond in The Living Daylights (1987). Additionally, both actors starred in a Steven Spielberg film in 1993 (Schindler's List (1993) and Jurassic Park (1993)).
The watch Michael wore is Hamilton Jazzmaster Gent Quartz, the same watch Liam Neeson's character Bryan Mills wore in Taken 2 (2012).
Second collaboration between Jaume Collet-Serra and Vera Farmiga, following Orphan (2009).
Patrick Wilson plays a cop named Alex Murphy. This also happens to be the titular character's name in another cop movie; RoboCop (1987), although it is unclear if the reference is intentional or coincidental.
At the beginning of the movie the book "The Shadow of the Wind", by Carlos Ruiz Zafón can be seen on Liam Neeson's nightstand. Zafón is from Barcelona, as is director Jaume Collet-Serra.
Jonathan Banks plays a character named Walt in this movie. In the TV show Breaking Bad (2008) he was often at odds with the main character, who was also named Walt.
Tarrytown is the town next to Sleepy Hollow which is the main location for the Johnny Depp movie Sleepy Hollow (1999).
Liam Neeson and Elizabeth McGovern's first collaboration since Clash of the Titans (2010).
Elizabeth McGovern Starred in The Handmaid's Tale with with Liam Neeson's Late wife Natasha Jane Richardson