Nonstop flight route between Saint John, New Brunswick, Canada and SeaTac (near Seattle and Tacoma), Washington, United States:
Departure Airport:

Arrival Airport:

Distance from YSJ to SEA:
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- About this route
- YSJ Airport Information
- SEA Airport Information
- Facts about YSJ
- Facts about SEA
- Map of Nearest Airports to YSJ
- List of Nearest Airports to YSJ
- Map of Furthest Airports from YSJ
- List of Furthest Airports from YSJ
- Map of Nearest Airports to SEA
- List of Nearest Airports to SEA
- Map of Furthest Airports from SEA
- List of Furthest Airports from SEA
About this route:
A direct, nonstop flight between Saint John Airport (YSJ), Saint John, New Brunswick, Canada and Seattle–Tacoma International Airport (SEA), SeaTac (near Seattle and Tacoma), Washington, United States would travel a Great Circle distance of 2,633 miles (or 4,238 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Saint John Airport and Seattle–Tacoma International Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Saint John Airport and Seattle–Tacoma International Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | YSJ / CYSJ |
Airport Name: | Saint John Airport |
Location: | Saint John, New Brunswick, Canada |
GPS Coordinates: | 45°18'57"N by 65°53'24"W |
Area Served: | Saint John, New Brunswick |
Operator/Owner: | Transport Canada |
Airport Type: | Public |
Elevation: | 357 feet (109 meters) |
# of Runways: | 2 |
View all routes: | Routes from YSJ |
More Information: | YSJ Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SEA / KSEA |
Airport Names: |
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Location: | SeaTac (near Seattle and Tacoma), Washington, United States |
GPS Coordinates: | 47°26'56"N by 122°18'33"W |
Area Served: | Seattle; Tacoma, Washington, US |
Airport Type: | Public |
Elevation: | 433 feet (132 meters) |
# of Runways: | 3 |
View all routes: | Routes from SEA |
More Information: | SEA Maps & Info |
Facts about Saint John Airport (YSJ):
- The airport is classified as an airport of entry by NAV CANADA and is staffed by the Canada Border Services Agency.
- The closest airport to Saint John Airport (YSJ) is 5th Canadian Division Support Base Gagetown, (YCX), which is located 45 miles (72 kilometers) NW of YSJ.
- Saint John Airport (YSJ) has 2 runways.
- Because of Saint John Airport's relatively low elevation of 357 feet, planes can take off or land at Saint John Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- The furthest airport from Saint John Airport (YSJ) is Albany Airport (ALH), which is located 11,694 miles (18,820 kilometers) away in Albany, Western Australia, Australia.
- Saint John Airport handled 227,223 passengers last year.
Facts about Seattle–Tacoma International Airport (SEA):
- Seattle–Tacoma International Airport handled 34,776,666 passengers last year.
- The new 3rd runway opened on November 20, 2008, with a total construction cost of $1.1 billion.
- The April 1957 OAG shows 216 departures a week on United, 80 Northwest, 35 Western, 21 Trans-Canada, 20 Pan Am, 20 Pacific Northern, and 10 Alaska.
- Because of Seattle–Tacoma International Airport's relatively low elevation of 433 feet, planes can take off or land at Seattle–Tacoma International Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- The closest airport to Seattle–Tacoma International Airport (SEA) is Renton Municipal Airport (RNT), which is located only 5 miles (9 kilometers) NE of SEA.
- In addition to being known as "Seattle–Tacoma International Airport", another name for SEA is "Sea–Tac Airport".
- The South Satellite Terminal has reached its maximum capacity for handling international passengers in terms of immigration check stands as well as customs declaration.
- The furthest airport from Seattle–Tacoma International Airport (SEA) is Tôlanaro Airport (FTU), which is located 10,781 miles (17,350 kilometers) away in Tôlanaro, Madagascar.
- A new control tower was built beginning in 2001 and opened November 2004, at a cost of $26 million.
- Seattle–Tacoma International Airport (SEA) has 3 runways.
- Residents of the surrounding area filed lawsuits against the Port in the early 1970s, complaining of noise, vibration, smoke, and other problems.