Houston (IAH) to San Diego (SAN) flights
One airline flies nonstop from Houston (IAH) to San Diego (SAN): United Airlines. The two airports are 1,301 miles (2,094 km) apart. United Airlines is in Star Alliance. There are also 29 ways to fly it with one stop, through El Paso, Tucson and Austin and more.
Airlines flying nonstop from IAH to SAN
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book IAH to SAN 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 SAN with one stop
29 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via El Paso (ELP)United Airlines, then Southwest Airlines
- Via Tucson (TUS)United Airlines, then Southwest Airlines
- Via Austin (AUS)United Airlines, then Alaska Airlines, Southwest Airlines and 1 more
- Via Phoenix (PHX)American Airlines and Frontier Airlines the whole way
+1 - Via San Antonio (SAT)United Airlines, then Southwest Airlines
- Via Albuquerque (ABQ)United Airlines, then Southwest Airlines
- Via Dallas (DFW)American Airlines the whole way
- Via Las Vegas (LAS)Frontier Airlines the whole way+1
- Via Los Angeles (LAX)United Airlines and Delta Air Lines the whole way+1
- Via Colorado Springs (COS)United Airlines, then Southwest Airlines
- Via Tulsa (TUL)United Airlines, then Alaska Airlines
- Via Vail (EGE)United Airlines, then Alaska Airlines
- Via Denver (DEN)Frontier Airlines and United Airlines the whole way+1
- Via Hayden (HDN)United Airlines, then Alaska Airlines
- Via San Jose Cabo (SJD)United Airlines, then Alaska Airlines and Southwest Airlines
IAH to SAN: common questions
Which airlines fly nonstop from IAH to SAN?
United Airlines (Star Alliance) flies nonstop from Houston (IAH) to San Diego (SAN).
How far is Houston from San Diego by plane?
Houston (IAH) and San Diego (SAN) are 1,301 miles (2,094 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 SAN 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 SAN 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 SAN with taxes and fees.
Where can I connect between Houston and San Diego?
The most direct connections are through El Paso (ELP), Tucson (TUS), Austin (AUS), Phoenix (PHX) and San Antonio (SAT). On 9 of them the same airline flies both flights, for example American Airlines through Phoenix.
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.