Direct (nonstop) flights from Seattle to Guanacaste
1 airline flys nonstop from Seattle Tacoma International (SEA) to Daniel Oduber Quiros International (LIR). It's 3,319 miles (5,341 km), about 6h 58m in the air. Operated by Alaska Airlines.
Alaska Airlines
Route data last updated: May 30, 2026
Airlines with non-stop flights
AS
Alaska Airlines
Alternative Routes
Other ways to fly from Seattle to Guanacaste with one stop · direct emits 507 kg CO₂ per passenger
Looking for the return flight?
LIR → SEA: Flights from Guanacaste to SeattleOther direct flights from Seattle
Direct flights from Guanacaste (LIR)
Frequently Asked Questions
How long is the direct flight from Seattle to Guanacaste?
A nonstop flight from Seattle (SEA) to Guanacaste (LIR) takes approximately 6 hours and 58 minutes. The distance is 3,319 miles (5,341 km).
Which airlines fly nonstop from Seattle to Guanacaste?
Just Alaska Airlines.
Is there a nonstop flight from Seattle to Guanacaste?
Yes. 1 airline: Alaska Airlines.
How far is Seattle from Guanacaste?
The flight distance from Seattle to Guanacaste is 3,319 miles (5,341 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as London to New York.
What is the time difference between Seattle and Guanacaste?
Guanacaste is 1 hour ahead of Seattle. (America/Los_Angeles vs America/Costa_Rica.)
What type of aircraft flies from Seattle to Guanacaste?
At 6h 58m, 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 Costa Rica?
Depends on your passport. Check with the Costa Rica embassy or an official visa portal before booking — requirements change.
What is the carbon footprint of a flight from Seattle to Guanacaste?
Roughly 507 kg CO2 per passenger one-way. That's about the same as driving 2,535 km.
Is the return flight from Guanacaste 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 Guanacaste?
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.