Main •
Chyler Leigh as Kat Landry, Alice's mother and Del's daughter • Alex Hook as teenage and young adult Kat Landry •
Evan Williams as mature Elliot Augustine, a close friend of the Landry family, Alice's physics teacher and Katherine's love interest in the present • David Webster as teenage and young adult Elliot Augustine • Sadie Laflamme-Snow as Alice "Ali" Dhawan, Katherine's daughter and Del's granddaughter •
Andie MacDowell as Del Watson Landry, Katherine's mother and Alice's maternal grandmother • Julia Tomasone as teenage Del Watson in 1974 (seasons 3-4)
Recurring • Remy Smith as child Jacob "Jake" Landry, Delilah's son and Katherine's younger brother, who went missing in 1999 and was eventually
presumed dead. It was revealed in the season 1 finale that he followed a stray dog to the pond, fell in, and was sent back in time to 1790. •
Spencer MacPherson as mature Jacob "Jake" Landry (seasons 2–4) in 1814 and the present •
Jefferson Brown as mature Colton "Cole" Landry, Delilah's late husband and Katherine and Jacob's father who died in a mysterious accident in 2000 and could also time travel • Jordan Doww as teenage Colton "Cole" Landry in 1974 (seasons 3-4) • Lincoln Reign McCaffrey as Colton "Cole" Landry as a child (seasons 2–3) •
Al Mukadam as mature Brayden "Brady" Dhawan, Katherine's ex-husband and Alice's father, a rich lawyer who lives in
Minneapolis with his new girlfriend Rachel, who is never shown on screen • Siddharth Sharma as teenage and young adult Brayden "Brady" Dhawan •
Nigel Whitmey as Byron Groff (season 1), the former owner of the
Port Haven,
New Brunswick newspaper •
Samora Smallwood as mature Monica Hill, a
frenemy of Katherine's in high school and a resident of Port Haven who runs a diner • Monique Jasmine Paul as teenage Monica Hill •
Kataem O'Connor as Spencer Hill, a student at Alice's new high school and Monica's son • Ali Prijono as Zoey (season 1), a student at Alice's new high school and Spencer's girlfriend •
Marnie McPhail-Diamond as Rita Richards, a close friend of Delilah's • Baeyen Hoffman as child Danny Sawyer, Jacob's best friend in 1999 • Peyson Rock as mature Danny Sawyer • Samuel Braun as teenage Nick Oates, Alice's boyfriend in 1999 and Elliot's other best friend •
Kerry James as mature Nick Oates •
Alex Mallari Jr. as Andy Stafford (season 1): a
veterinarian in Port Haven who Monica introduces to Katherine •
Laura de Carteret as Joyce (season 1), Nick's mother and co-owner, with Jude, of the Roxy movie theater •
Megan Fahlenbock as Jude (season 1), Nick's mother and Joyce's
same-sex partner •
Kris Holden-Ried as Thomas Coyle (seasons 2-3), a citizen of Port Haven, Jacob's friend and Katherine's love interest in 1814/1816 •
Stuart Hughes as Elijah Landry (seasons 2-3), Jacob's adoptive father in 1814, and ancestor of the Landrys in the present. • Watson Rose as Susanna Augustine (seasons 2-3), Elliot's ancestor and later a friend of Katherine's in 1814/1816 •
Vaughan Murrae as KC Goodwin (season 2; guest season 3), Katherine Landry's new summer intern at
The Herald newspaper, the
nonbinary teenage grandchild of recently deceased town matriarch Evelyn Goodwin. KC Goodwin is revealed to be a time traveler in season 3. • Alexander Eling as Noah LeBlanc (seasons 2–4), a high school graduate who works for Fish & Chips Truck and Alice's love interest in the present •
Rob Stewart as Sam Bishop (seasons 2–4), the new owner of the land adjacent to the Landry farm and Delilah's love interest in the present • Devin Cecchetto as teenage Evelyn "Evie" Goodwin (seasons 3-4) • Susan Hamann as mature Evelyn "Evie" Goodwin (guest seasons 2-3) • River Price-Maenpaa as Evelyn "Evie" Goodwin as a child (season 3) •
James Gallanders as mature Vic Augustine, Elliot's estranged father who has a longstanding grudge against the "high and mighty" Landry family • Grayson Gallanders as child Vic Augustine in 1974 (season 3) • Mark Ballantyn as Rick Augustine, Victor's teenage elder brother who died in a car accident in 1974 (season 3) • Hawthorne Wilde Fowler as Rick Augustine as a child (season 3) •
Jill Frappier as Fern Landry, Colton's paternal grandmother in 1974-1975 (seasons 3-4) • Bianca Melchior as young Fern Landry, Colton's paternal grandmother in 1925 (season 4) •
Dale Whibley as Max Goodwin (seasons 3-4) • Hannah Storey as teenage Tessa Cooper, Elliot's mother in 1974 (season 3) • Kelsey Falconer as Tessa Cooper, Elliot's mother (season 4) • Miranda Millar as Emma Baker, Elliot's ex-wife (season 3) ==Episodes==