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SEA to YCM: distance & flight time
Seattle (Seattle Tacoma International Airport) → Saint Catherines (Niagara District Airport)
2,089 mi
3,362 km · 1,815 nm
4h 34m
estimated nonstop flight time
+3h
time difference · heading east
See live SEA→YCM fares Phone-only fares on this route — call free
Flight time details
2,089 miles nonstop takes roughly 4h 34m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- SEA — Seattle Tacoma International Airport · Seattle, United States
- YCM — Niagara District Airport · Saint Catherines, Canada
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 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
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
Frequently asked questions
How far is SEA from YCM?
The flight distance from Seattle (SEA) to Saint Catherines (YCM) 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 SEA to YCM?
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 Seattle and Saint Catherines?
Saint Catherines is 3 hours ahead of Seattle.
What is the cheapest way to fly from SEA to YCM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–YCM that never appear on search engines, with no booking fees.