United States to Costa Rica · 1,480 miles (2,382 km)

Houston (IAH) to Guanacaste (LIR) flights

One airline flies nonstop from Houston (IAH) to Guanacaste (LIR): United Airlines. The two airports are 1,480 miles (2,382 km) apart. United Airlines is in Star Alliance. There are also 7 ways to fly it with one stop, through San Jose, Dallas and Miami and more.

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Airlines flying nonstop from IAH to LIR

United AirlinesStar Alliance · bookable with 13 programsWho books it

Book IAH to LIR 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

IAH to LIR with one stop

7 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.

Via San Jose (SJO)United Airlines, then SANSA and Edelweiss Air
RZ
Via Dallas (DFW)American Airlines the whole way
Via Miami (MIA)American Airlines the whole way
Via Fort Lauderdale (FLL)JetBlue Airways the whole way
Via Atlanta (ATL)Delta Air Lines the whole way
Via Nashville (BNA)United Airlines, then Southwest Airlines
Via Charlotte (CLT)American Airlines the whole way

IAH to LIR: common questions

Which airlines fly nonstop from IAH to LIR?

United Airlines (Star Alliance) flies nonstop from Houston (IAH) to Guanacaste (LIR).

How far is Houston from Guanacaste by plane?

Houston (IAH) and Guanacaste (LIR) are 1,480 miles (2,382 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.

Which points programs can book IAH to LIR 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 IAH 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 IAH to LIR with taxes and fees.

Where can I connect between Houston and Guanacaste?

The most direct connections are through San Jose (SJO), Dallas (DFW), Miami (MIA), Fort Lauderdale (FLL) and Atlanta (ATL). On 5 of them the same airline flies both flights, for example American Airlines through Dallas.

More routes

LIR to IAH Every nonstop from IAH Every nonstop from LIR

IAH to Istanbul IST IAH to Paris CDG IAH to Frankfurt FRA IAH to Chicago ORD IAH to Dallas DFW IAH to Amsterdam AMS IAH to Dubai DXB IAH to Rome FCO IAH to Atlanta ATL IAH to Denver DEN IAH to Munich MUC IAH to London LHR

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.