The flight distance from Monte Caseros Airport (MCS) in Monte Caseros, Argentina to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 10,783 kilometers (6,700 miles / 5,823 nautical miles). The estimated flight time for this route is approximately 14h, flying northwest at a heading of 322°.

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

This is an international route connecting Argentina with United States. It is an intercontinental flight between South America and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 22:55 in Monte Caseros, it's 18:55 in Seattle. The 4-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from Seattle (SEA) to Monte Caseros (MCS) follows a heading of 128° (southeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Monte Caseros Airport (MCS) and Seattle-Tacoma International Airport (SEA) detail pages, or use our flight duration calculator to compare other routes.