Seattle to Montréal (SEA–YUL) — Airlines, Schedules & Connections

US passport holders enter Canada without a visa for stays up to 6 months. No eTA is needed when arriving by air with a US passport. Passport must be valid for the duration of the stay. A return or onward ticket and proof of funds may be requested at the border.

Link Light Rail runs from downtown Seattle (Westlake station) to the airport in 38 minutes ($3.50 peak). Trains run every 6–12 minutes during peak hours from 5am to 1am. Ride-shares run $30–50 from downtown; SR-99 and I-5 can be heavily congested southbound during afternoon rush (3–7pm).

Sound Transit 574 express bus serves Tacoma ($2.50–4). Sounder commuter rail connects Tacoma to the airport area via a shuttle.

The 747 Express bus departs from the arrivals level every 20–30 minutes around the clock (CAD $11). It stops at several downtown métro stations, making it convenient for most city-centre destinations. Taxis from the arrivals level charge a flat rate of CAD $45 to downtown; Uber and Lyft are available from a separate ride-share zone.Rental car facilities are located on-site in the terminal complex. During winter, confirm road conditions before driving; Highway 20 can be slow or briefly closed during heavy snowstorms.

Continental climate with dramatic seasonal swings. Summers (June–August) are warm and humid at 24–30°C with occasional thunderstorms. Winters (December–March) are severe, with temperatures regularly dropping to −15°C or colder and heavy snowfall that causes frequent de-icing delays and occasional ground stops.

Spring (April–May) and autumn (September–October) are transitional and relatively pleasant, though spring snowstorms are not unusual. Pack serious winter gear from November through March; ice storms in early spring create particularly difficult travel conditions.