Mr. Gold drives past the border of Storybrooke with Emma and Henry in episode #213 "Tiny". Greg Mendell meets with Tamara at the edge of town in episode #219 "Lacey".
Anton joins the dwarfs at the end of episode #213 "Tiny". David and Mary Margaret take Emma to the hidden garden where Anton is growing more magic beans in episode #219 "Lacey". The destroyed crops is discovered in episode #220 "The Evil Queen".
From episode #113 "What Happened to Frederick".
Oliver bids his farewells to Tatsu and catches a ride on the back of a pickup truck in episode #312 "Uprising".
Julia and Quentin rescue Jane Chatwin from a trap tree shortly after arriving in Fillory in episode #113 "Have You Brought Me Little Cakes?".
The whole gang comes upon the old grave of Martin Chatwin in episode #113 "Have You Brought Me Little Cakes?".
A group of kids crash during a drag race and discover a strange meteor in episode #108 "Night of the Hawk". Savage meets with himself and later activates one of the meteors in episode #116 "Legendary".
The team raids the gang's camp to capture Stillwater but Jax is captured in the process in episode #111 "The Magnificent Eight".
Rip and Rory take the baby Martin Stein from his parents in episode #112 "Last Refuge".
Kendra briefly escapes from Savage's custody to get a message to the team and they arrive to rescue her and thwart Savage's theft of one of the meteors in episode #116 "Legendary".
The Legends and the JSA team up to steal a mysterious amulet from the nazis and then later they attempt to rescue Ray & Amaya from the bunker in episode #202 "The Justice Society of America".
The Legends travel to Mississippi during the Civil War to track down a the crashed pod of a time pirate and stop a zombie outbreak in episode #204 "Abominations".
The Legends arrive at the location of a aberration to find Jonah Hex about to be lynched by some goons of Quentin Turnbull in episode #206 "Outlaw Country".
Source: hushrules — Twitter
Rip Hunter pulls a gun on George Washington after being brainwashed by the Legion of Doom in episode #210 "The Legion of Doom". The Legends arrive on Christmas Eve to prevent Washington's death and save America in episode #211 "Turncoat".
Kinsey meets with a trust member and is taken away in their car in episode #814 "Full Alert".
Daniel is being driven to meet with General Kiselev by Captain Voronkova when they are stopped and the Russian military takes him into custody in episode #814 "Full Alert".
The chase ends with Mitchell being shot and Vala steels someone's car in episode #1008 "Memento Mori".
Flynn and his cohorts shoot down Charles Lindbergh's airplane as he is finishing his transatlantic flight in episode #114 "The Lost Generation".
The leader of the Rowdy Three looks at the photo of Amanda they stole from Todd's apartment in episode #101 "Horizons". Amanda dances with the Rowdy Three and then runs away when they are attacked by the military in episode #108 "Two Sane Guys Doing Normal Things".
Ken and Bart drive away on the stolen bike after escaping the biker gang in episode #103 "Rogue Wall Enthusiasts".
Bart and Ken are driving down the road when they come upon a military roadblock in episode #108 "Two Sane Guys Doing Normal Things".
Raimy is called to a crime scene where an old skeleton is found in a swamp in episode #101 "Pilot".
The team intercepts the antimatter shipment to stop the explosion in episode #102 "Protocol 6".