Sit on the Left side of the plane for the best views on flights from Toronto to Seoul. The left side wins overall because the Toronto departure view is genuinely spectacular — the CN Tower, Lake Ontario, and the islands are hard to beat as an opening scene. The right side at landing is excellent for Seoul, but the left side also gets reasonable views of the Korean Peninsula's western coastline during descent. For the full flight, left gives you the better iconic moment.

During takeoff from Lester B Pearson International (YYZ), sit on the Left side for the best views. YYZ's most common departure is runway 23 (heading southwest), which puts the left side facing southeast toward downtown Toronto and Lake Ontario. You get a clear view of the CN Tower, the downtown skyline, and the lake shoreline as the aircraft banks left onto its northwesterly routing toward Alaska. Notable sights include: CN Tower and downtown Toronto skyline, Lake Ontario shoreline, Toronto Islands, Scarborough Bluffs along the eastern lakeshore.

When landing at Incheon International (ICN), sit on the Right side for the best views. Incheon Airport sits on Yeongjong Island west of Seoul, and aircraft typically approach from the west or northwest over the Yellow Sea on runway 33L/33R. The right side faces east toward Seoul, giving views of the Han River, the city's dense urban grid, and the mountains ringing the capital including Bukhansan. Notable sights include: Han River cutting through Seoul's urban grid, Bukhansan mountain range north of the city, Incheon's coastal mudflats and tidal islands, Seoul's dense high-rise districts.

The flight from Lester B Pearson International (YYZ) to Incheon International (ICN) takes Approximately 13 to 14 hours.

The polar great circle route tracks northwest from Toronto over Hudson Bay, then across the southern tip of Baffin Island, over the Greenland Sea, across the Alaskan interior near Fairbanks, down over the Kamchatka Peninsula and the Sea of Okhotsk, then southwest across the Korean Strait toward Incheon. Key features include the sea ice and fjords of the Canadian Arctic, the volcanic peaks of Kamchatka visible on clear days, and the island chains of the North Pacific.