Seattle (SEA) to Guanacaste (LIR) flights
An economy award from Seattle (SEA) to Guanacaste (LIR) starts at 12,500 miles one way with Alaska Atmos Rewards on Alaska Airlines, plus taxes and fees from $5.60. Finnair Plus charges the same. 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.
How many miles SEA to LIR costs
Economy, one way, on the nonstop flights, from the Award Flight Pricer's award charts. Ranges run off-peak to peak; "from" is the floor of a dynamic price.
| Program | Economy | Taxes and fees |
|---|---|---|
| Alaska Atmos RewardsOn Alaska Airlines | 12,500 | $5.60 |
| Finnair PlusOn Alaska Airlines | 12,500 | $5.60 |
| American AAdvantageOn Alaska Airlines | 17,500 | $5.60 |
| Iberia ClubOn Alaska Airlines | 18,000 | $5.60 |
| British Airways ClubOn Alaska Airlines | 20,750 | $5.60 |
| Qatar Airways Privilege ClubOn Alaska Airlines | 20,750 | $5.60 |
| JAL Mileage BankOn Alaska Airlines | 23,000 | $5.60 |
| Cathay Pacific Asia MilesOn Alaska Airlines | 27,000 | $29–38 |
| Qantas Frequent FlyerOn Alaska Airlines | 28,200 | $5.60 |
| Starlux (COSMILE)On Alaska Airlines | 35,000 | $38.60 |
Business and first class prices are in the Award Flight Pricer. Chart prices need award space on your date, so search it before you transfer points.
Compare every program in the Award Flight PricerAirlines 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
How many miles does SEA to LIR cost?
In economy it starts at 12,500 miles one way with Alaska Atmos Rewards on Alaska Airlines, plus taxes and fees from $5.60. Next cheapest: Finnair Plus (12,500), American AAdvantage (17,500) and Iberia Club (18,000). These are award chart prices from the Award Flight Pricer. Programs that price dynamically can cost more on busy dates, so check yours before you transfer points. Business and first class prices are in the pricer too.
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.
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.