Seattle (SEA) to Guanacaste (LIR) flights
One airline flies nonstop from Seattle (SEA) to Guanacaste (LIR): Alaska Airlines. The two airports are 3,322 miles (5,347 km) apart. Alaska Airlines is in oneworld. There are also 24 ways to fly it with one stop, through Houston, Houston and Denver and more.
Airlines flying nonstop from SEA to LIR
- Alaska Airlinesoneworld · bookable with 9 programsWho books it
Book SEA to LIR with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks Alaska Airlines
- American AAdvantageBooks Alaska Airlines
- British Airways ClubBooks Alaska Airlines
- Cathay Pacific Asia MilesBooks Alaska Airlines
- Finnair PlusBooks Alaska Airlines
- Iberia ClubBooks Alaska Airlines
- JAL Mileage BankBooks Alaska Airlines
- Qantas Frequent FlyerBooks Alaska Airlines
- Qatar Airways Privilege ClubBooks Alaska Airlines
SEA to LIR with one stop
24 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Houston (HOU)Southwest Airlines the whole way
- Via Houston (IAH)United Airlines the whole way
- Via Denver (DEN)United Airlines and Southwest Airlines the whole way
+3
- Via Dallas (DFW)American Airlines the whole way
- Via Vancouver (YVR)Air Canada the whole way
- Via Los Angeles (LAX)Alaska Airlines and United Airlines the whole way+2
- Via San Francisco (SFO)Alaska Airlines and United Airlines the whole way
- Via Calgary (YYC)WestJet the whole way
- Via Nashville (BNA)Southwest Airlines the whole way
- Via Atlanta (ATL)Delta Air Lines the whole way
- Via Minneapolis (MSP)Delta Air Lines and Sun Country Airlines the whole way
- Via Miami (MIA)American Airlines the whole way
- Via Fort Lauderdale (FLL)Alaska Airlines and Delta Air Lines, then JetBlue Airways
- Via Chicago (ORD)American Airlines and United Airlines the whole way+1
- Via Charlotte (CLT)American Airlines the whole way
SEA to LIR: common questions
Which airlines fly nonstop from SEA to LIR?
Alaska Airlines (oneworld) flies nonstop from Seattle (SEA) to Guanacaste (LIR).
How far is Seattle from Guanacaste by plane?
Seattle (SEA) and Guanacaste (LIR) are 3,322 miles (5,347 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book SEA to LIR award flights?
9 programs can book at least one of the nonstop airlines: Alaska Atmos Rewards, American AAdvantage, British Airways Club, Cathay Pacific Asia Miles, Finnair Plus, Iberia Club, JAL Mileage Bank, Qantas Frequent Flyer and 1 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does SEA to LIR cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for SEA to LIR with taxes and fees.
Where can I connect between Seattle and Guanacaste?
The most direct connections are through Houston (HOU), Houston (IAH), Denver (DEN), Dallas (DFW) and Vancouver (YVR). On 23 of them the same airline flies both flights, for example Southwest Airlines through Houston.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.