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YCM to SEA: distance & flight time
Saint Catherines (Niagara District Airport) → Seattle (Seattle Tacoma International Airport)
2,089 mi
3,362 km · 1,815 nm
4h 34m
estimated nonstop flight time
-3h
time difference · heading northwest
See live YCM→SEA fares Phone-only fares on this route — call free
Flight time details
2,089 miles nonstop takes roughly 4h 34m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time set-back when reading arrival times on your ticket.
The two airports
- YCM — Niagara District Airport · Saint Catherines, Canada
- SEA — Seattle Tacoma International Airport · Seattle, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near YCM
- YYZ · Lester B. Pearson International Airport41 mi away
- IAG · Niagara Falls International Airport13 mi away
- BUF · Buffalo Niagara International Airport28 mi away
- DU9 · Dunnville Airport31 mi away
Near SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Frequently asked questions
How far is YCM from SEA?
The flight distance from Saint Catherines (YCM) to Seattle (SEA) is 2,089 miles (3,362 km, 1,815 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YCM to SEA?
A nonstop flight takes about 4h 34m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Saint Catherines and Seattle?
Seattle is 3 hours behind Saint Catherines.
What is the cheapest way to fly from YCM to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YCM–SEA that never appear on search engines, with no booking fees.