Direct (nonstop) flights from Seattle to Cancun
2 airlines fly nonstop from Seattle Tacoma International (SEA) to Cancun International Airport (CUN). It's 2,684 miles (4,320 km), about 6h 1m in the air. Operated by Alaska Airlines, Delta Air Lines.
Alaska Airlines
Delta Air Lines
Route data last updated: May 30, 2026
Airlines with non-stop flights
AS
Alaska Airlines
DL
Delta Air Lines
Alternative Routes
Other ways to fly from Seattle to Cancun with one stop · direct emits 410 kg CO₂ per passenger
Looking for the return flight?
CUN → SEA: Flights from Cancun to SeattleOther direct flights from Seattle
Direct flights from Cancun (CUN)
Frequently Asked Questions
How long is the direct flight from Seattle to Cancun?
A nonstop flight from Seattle (SEA) to Cancun (CUN) takes approximately 6 hours and 1 minutes. The distance is 2,684 miles (4,320 km).
Which airlines fly nonstop from Seattle to Cancun?
2 airlines: Alaska Airlines, Delta Air Lines.
Is there a nonstop flight from Seattle to Cancun?
Yes. 2 airlines: Alaska Airlines, Delta Air Lines.
How far is Seattle from Cancun?
The flight distance from Seattle to Cancun is 2,684 miles (4,320 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Los Angeles.
What is the time difference between Seattle and Cancun?
Cancun is 2 hours ahead of Seattle. (America/Los_Angeles vs America/Cancun.)
What type of aircraft flies from Seattle to Cancun?
At 6h 1m, this route typically uses wide-body aircraft — Boeing 777, 787, or Airbus A330/A350. Varies by airline.
Do I need a visa to travel from USA to Mexico?
Depends on your passport. Check with the Mexico embassy or an official visa portal before booking — requirements change.
What is the carbon footprint of a flight from Seattle to Cancun?
Roughly 410 kg CO2 per passenger one-way. That's about the same as driving 2,050 km.
Is the return flight from Cancun to Seattle also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Seattle to Cancun?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Seattle Tacoma International for this flight?
3 hours before departure for international flights. You need time for check-in, security, and immigration.