 | Kristen Bell als Alice |
 | Ben Platt als Paul |
 | Allison Janney als Donna |
 | Cynthia Addai-Robinson als Eloise |
 | Dustin Milligan als Dennis |
 | John Macmillan als Ollie |
 | Isaach De Bankolé als Henrique |
 | Karan Soni als Dominic |
 | Jorma Taccone als Jonathan |
 | Lizzy Caplan als Marissa |
 | Andy Daly als Bill |
 | Adam Godley als Narrator (voice) |
 | Brandon Johnston als Elf Photo Clerk |
 | Lexi Janicek als Young Alice |
 | Milakale Kember als Young Eloise |
 | Jaxon Goldenberg als Young Paul |
 | Emma Davies als Helen |
 | Evelyn Mok als Dressing Room Attendant |
 | Judith Amsenga als Lisbet |
| Jesus Revers Ortiz als Crosby |
| Greg Barnett als Preston |
 | Randall Park als Russell |
 | Tony Goldwyn als Dr. Goulding |
 | Julian Ovenden als Alcott |
| Janine Harouni als Young Woman at Airport |
| Nerissa Bradley als Juliet (Gate Agent) |
| Marc Small als Alcott's Driver |
| Alice Brittain als Charlotte (Concierge) |
 | Lawrence Russell als Nicholas (Room Service) |
 | Davina Moon als Daniella |
 | Rufus Jones als Tom |
 | Emily Lloyd-Saini als Moffy |
 | Jemima Rooper als Mimzy |
| Annie McGrath als Bits |
 | Benedict Wolf als Captain |
| Moray Treadwell als Farmer |
 | Sandra James-Young als Marjory |
| Mark Kitto als Frederic Destry-Courtenay |
 | Jonny Weldon als Will (Caterer) |
 | Lloyd Griffith als PC Fox |
 | Rich Keeble als Rich Setting Candles |
 | Mary Roscoe als Martha |
 | April Rock als Photo Clerk #2 |
 | Pedro Minas als Dallas |
| Suzy Kohane als Queen Lear |
| Nas Ganev als Club Guy |
| Doug Berry als Driver Greeting Airport Arrival (uncredited) |
 | D'Arcy Carden als Martha (uncredited) |
| Liam Edwards als Concierge (uncredited) |
 | Lesley Ewen als Barbara (uncredited) |
| Philip Labey als Giles (uncredited) |
 | Stuart Whelan als Airport passenger (uncredited) |
 | Nathan Wiley als Bill (uncredited) |
| Claire Scanlon | Director |
| Grant Ginder | Novel |
| Wendy Molyneux | Co-Writer |
| Lizzie Molyneux-Logelin | Screenplay |
| Ashley Fox | Producer |
| Margot Hand | Producer |
| Liza Carmel | Unit Production Manager |
| Wendy Greene Bricmont | Editor |
| Oliver Stapleton | Director of Photography |
| Jane Musky | Production Design |
| Theo Park | Casting |
| Gary Arthurs | Stunt Coordinator |
| Yusuf Chaudhri | Stunt Double |
| Christina Low | Stunt Double |
| Jodie Saunders | Stunts |
| Charles Jarman | Stunts |
| Ryan Lynch | Set Dresser |
| Craig Lynch | Dressing Prop |
| Adam Morris | First Assistant Director |
| Charlie Vaughan | Second Assistant Director |
| Ben Browning | Executive Producer |
| Alison Cohen | Executive Producer |
| Christos V. Konstantakopoulos | Executive Producer |
| Milan Popelka | Executive Producer |
| Kimberley McBeath | Set Decoration |
| Annie Hardinge | Costume Design |
| Michael Lebensfeld | Visual Effects |
| Kris Cole | First Assistant Editor |
| Andrew Blustain | Assistant Editor |
| Joseph Suzuki | Assistant Editor |
| Mara Vodinelic | Location Coordinator |
| Charlie Somers | Location Manager |
| Paul Paragon | Production Sound Mixer |
| John McHugh | Supervising Art Director |
| Erin Shien Smith | Art Direction |
| Sabrina Naumann | Dialogue Editor |
| Phil Hartley | Sound Recordist |
| Louise Killin | Line Producer |
| Marina Stabile | Line Producer |
| Tom Howe | Original Music Composer |
| Lucy Cain | Hair Designer |
| Lucy Cain | Makeup Designer |
| Sara Austin | Hairstylist |
| Sara Austin | Makeup Artist |
| Laura McGowan | Hairstylist |
| Laura McGowan | Makeup Artist |
| Siobhán McGrath | Hair Supervisor |
| Siobhán McGrath | Makeup Supervisor |
| Paige McKiernan | Makeup Trainee |
| Kristen Saia | Hair Department Head |
| Glenn S. Gainor | Head of Production |
| Alekko Batoctoy | Set Production Assistant |
| Daniel Carmel | Assistant Director |
| David Connon | Third Assistant Director |
| Eric Glasser | First Assistant Director |
| Aaron Davies | Standby Carpenter |
| Freya Espie | Standby Art Director |
| Charlie Fowler | Assistant Art Director |
| Jack Haggerty | Draughtsman |
| Ben Hopwood | Property Master |
| Martyna Jakimowska | Storyboard Artist |
| Isabelle Leduc | Art Department Coordinator |
| Terence N. Morgan | Props |
| Jekaterina Potasova | Graphic Designer |
| Josh Round | Dressing Prop |
| Ej Schreuder | Art Department Trainee |
| Nicholas Peter Yee | Set Decorating Coordinator |
| Grace Averbuch | Sound Effects Editor |
| Isaac Kuruvilla Balachandran | ADR Recordist |
| Dillon Bennett | Sound Re-Recording Mixer |
| Dillon Bennett | Supervising Sound Editor |
| Jennie Shea | ADR Recordist |
| Chiara Cabri | Sound Mix Technician |
| Barry Coxhead | First Assistant Sound Editor |
| Bálint Csáki | First Assistant Sound Editor |
| Mark DeSimone | ADR Mixer |
| George Elliott | Sound Mix Technician |
| Thomas Fennell | First Assistant Sound Editor |
| Michael Gilbert | Sound Effects Editor |
| Brian Hawlk | Additional Sound Re-Recording Mixer |
| Adam Horley | Supervising ADR Editor |
| Adam Horley | Supervising Dialogue Editor |
| Declan Ilett | Sound Mix Technician |
| Tushar Manek | Sound Mix Technician |
| Brendan Nicholson | Sound Re-Recording Mixer |
| Candela Palencia | Additional Sound Re-Recording Mixer |
| Francesca Renda | Second Assistant Sound |
| Jeffrey Roy | ADR Mixer |
| Michael Sinden | First Assistant Sound Editor |
| Matt Waites | Sound Effects Editor |
| James White | ADR Editor |
| Destiny Trow | Special Effects Technician |
| Eleana Gabriel | Additional Visual Effects |
| Bosky Kr | Visual Effects Producer |
| Abhishek Kumar | Visual Effects Producer |
| Michael Lebensfeld | Visual Effects Production Manager |
| Tommy Leigh | Visual Effects Producer |
| Conor O'Sullivan | VFX Editor |
| Paige Prokop | Visual Effects Coordinator |
| Naomi Provis | Digital Compositor |
| Matt Richardson | Compositing Supervisor |
| Sam Ridgway | Digital Compositor |
| Joe Wreford | Digital Compositor |
| Juliette Yager | Executive Visual Effects Producer |
| Nellie Burroughes | Stunt Double |
| Bianca Rennie | Stunt Double |
| Lucy Bristow | "C" Camera Operator |
| Neil Cain | Drone Cinematographer |
| Aaron Paul Champion | Second Assistant Camera |
| Alex Coverley | Key Grip |
| Beatrice da Gama | Camera Trainee |
| Kieran Duff | Lighting Technician |
| Jermaine Edwards | "B" Camera Operator |
| Mark Glenister | Digital Imaging Technician |
| Adam Kavanagh | Second Assistant "A" Camera |
| James Paul Thomas | "B" Camera Operator |
| Michael C. Price | Key Grip |
| Jonathan Spencer | Gaffer |
| Grace Thomas | Second Assistant Camera |
| Maisie Buck | Casting Associate |
| Cédric Andries | Costume Supervisor |
| Jovana Gospavic | Assistant Costume Designer |
| Ilaria Mosca | Wardrobe Master |
| Paul Ensby | Digital Intermediate Colorist |
| Jarryd Hall | Dailies Technician |
| Alison Hanken | Daily Makeup & Hair |
| Yogi Patel | Digital Intermediate Editor |
| Cornelius Shea | Digital Intermediate Producer |
| Alyssa Tomaneng | Post Production Coordinator |
| Flo Miller | Post Production Coordinator |
| Monique Dulieu | Location Assistant |
| Francesca Marago | Assistant Location Manager |
| Richard Nock | Assistant Location Manager |
| Tom Stanimeros | Location Assistant |
| Mat Bartram | Score Engineer |
| David Butterworth | Orchestrator |
| Joanie Diener | Temp Music Editor |
| Christopher M. Foster | Music Editor |
| Becca Gatrell | Music Supervisor |
| Clifton Harrison | Musician |
| Tom Howe | Conductor |
| Jake Jackson | Scoring Mixer |
| Steve Mair | Musician |
| Laurence Ungless | Musician |
| Marilyn Kirby | Script Supervisor |
| Ben Brigden | Transportation Co-Captain |
| Cecily Colahan | Production Coordinator |
| Ellen Steers | Unit Publicist |
| Nick Trumble | Dialect Coach |
