Guanacaste (LIR) to Dulles (IAD) flights
One airline flies nonstop from Guanacaste (LIR) to Dulles (IAD): United Airlines. The two airports are 2,021 miles (3,253 km) apart. United Airlines is in Star Alliance. There are also 19 ways to fly it with one stop, through Miami, Fort Lauderdale and Charlotte and more.
Airlines flying nonstop from LIR to IAD
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book LIR to IAD with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
LIR to IAD with one stop
19 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Miami (MIA)American Airlines the whole way
- Via Fort Lauderdale (FLL)JetBlue Airways, then United Airlines and Frontier Airlines
- Via Charlotte (CLT)American Airlines the whole way
- Via Atlanta (ATL)Delta Air Lines the whole way
- Via San Jose (SJO)SANSA, then United AirlinesRZ
- Via Philadelphia (PHL)American Airlines, then United Airlines
- Via Nashville (BNA)Southwest Airlines, then United Airlines
- Via New York (EWR)United Airlines the whole way
- Via New York (JFK)Delta Air Lines the whole way
- Via Detroit (DTW)Delta Air Lines the whole way
- Via Toronto (YYZ)Air Canada the whole way
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- Via Houston (IAH)United Airlines the whole way
- Via Chicago (ORD)United Airlines the whole way
- Via Boston (BOS)JetBlue Airways and Delta Air Lines, then United Airlines
- Via Dallas (DFW)American Airlines the whole way
LIR to IAD: common questions
Which airlines fly nonstop from LIR to IAD?
United Airlines (Star Alliance) flies nonstop from Guanacaste (LIR) to Dulles (IAD).
How far is Guanacaste from Dulles by plane?
Guanacaste (LIR) and Dulles (IAD) are 2,021 miles (3,253 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book LIR to IAD award flights?
13 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, ANA Mileage Club, Avianca LifeMiles, Emirates Skywards, EVA Air Infinity MileageLands, JetBlue TrueBlue, Lufthansa Miles & More and 5 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does LIR to IAD cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for LIR to IAD with taxes and fees.
Where can I connect between Guanacaste and Dulles?
The most direct connections are through Miami (MIA), Fort Lauderdale (FLL), Charlotte (CLT), Atlanta (ATL) and San Jose (SJO). On 13 of them the same airline flies both flights, for example American Airlines through Miami.
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.