Houston (IAH) to Seattle (SEA) flights
An economy award from Houston (IAH) to Seattle (SEA) starts at 10,000 miles one way with Alaska Atmos Rewards on Alaska Airlines, plus taxes and fees from $5.60. Avianca LifeMiles charges the same. 2 airlines fly nonstop from Houston (IAH) to Seattle (SEA): Alaska Airlines and United Airlines. The two airports are 1,872 miles (3,013 km) apart. Alaska Airlines is in oneworld and United Airlines is in Star Alliance. There are also 63 ways to fly it with one stop, through Vail, Hayden and Salt Lake City and more.
How many miles IAH to SEA 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 | 10,000 | $5.60 |
| Avianca LifeMilesOn United Airlines | 10,000 | $30.60 |
| Iberia ClubOn Alaska Airlines | 11,000 | $5.60 |
| Air Canada AeroplanOn United Airlines | 12,500 | $33.60 |
| American AAdvantageOn Alaska Airlines | 12,500 | $5.60 |
| Qatar Airways Privilege ClubOn Alaska Airlines | 14,500 | $5.60 |
| ANA Mileage ClubOn United Airlines | 15,000 | $5.60 |
| Cathay Pacific Asia MilesOn Alaska Airlines | 15,000 | $5.60 |
| JAL Mileage BankOn Alaska Airlines | 15,000 | $5.60 |
| Singapore Airlines KrisFlyerOn United Airlines | 15,000 | $5.60 |
| Starlux (COSMILE)On Alaska Airlines | 15,000 | $38.60 |
| Turkish Airlines Miles&SmilesOn United Airlines | 15,000 | $5.60–45.60 |
Business and first class prices, and 7 more programs, 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 IAH to SEA
- Alaska Airlinesoneworld · bookable with 9 programsWho books it
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book IAH to SEA 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
- Alaska Atmos RewardsBooks Alaska Airlines
- American AAdvantageBooks Alaska Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- British Airways ClubBooks Alaska Airlines
- Cathay Pacific Asia MilesBooks Alaska Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- Finnair PlusBooks Alaska Airlines
- Iberia ClubBooks Alaska Airlines
- JAL Mileage BankBooks Alaska Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Qantas Frequent FlyerBooks Alaska Airlines
- Qatar Airways Privilege ClubBooks Alaska 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 SEA with one stop
63 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Vail (EGE)United Airlines, then Alaska Airlines
- Via Hayden (HDN)United Airlines, then Alaska Airlines
- Via Salt Lake City (SLC)Delta Air Lines the whole way
- Via Dallas (DFW)American Airlines the whole way
- Via Denver (DEN)Frontier Airlines and United Airlines the whole way
+3 - Via Jackson (JAC)United Airlines, then Alaska Airlines
- Via Austin (AUS)United Airlines, then Alaska Airlines, Delta Air Lines and 1 more
- Via Oklahoma City (OKC)United Airlines, then Alaska Airlines
- Via Albuquerque (ABQ)United Airlines, then Alaska Airlines and Delta Air Lines
- Via Bozeman (BZN)United Airlines, then Alaska Airlines and Delta Air Lines
- Via Portland (PDX)Alaska Airlines the whole way
- Via San Antonio (SAT)United Airlines, then Alaska Airlines
- Via Wichita (ICT)United Airlines, then Alaska Airlines
- Via Tulsa (TUL)United Airlines, then Alaska Airlines
- Via Kalispell (FCA)United Airlines, then Alaska Airlines
IAH to SEA: common questions
How many miles does IAH to SEA cost?
In economy it starts at 10,000 miles one way with Alaska Atmos Rewards on Alaska Airlines, plus taxes and fees from $5.60. Next cheapest: Avianca LifeMiles (10,000), Iberia Club (11,000) and Air Canada Aeroplan (12,500). 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 IAH to SEA?
Alaska Airlines (oneworld) and United Airlines (Star Alliance) fly nonstop from Houston (IAH) to Seattle (SEA).
How far is Houston from Seattle by plane?
Houston (IAH) and Seattle (SEA) are 1,872 miles (3,013 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 SEA award flights?
22 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, Alaska Atmos Rewards, American AAdvantage, ANA Mileage Club, Avianca LifeMiles, British Airways Club, Cathay Pacific Asia Miles and 14 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
Where can I connect between Houston and Seattle?
The most direct connections are through Vail (EGE), Hayden (HDN), Salt Lake City (SLC), Dallas (DFW) and Denver (DEN). On 22 of them the same airline flies both flights, for example Delta Air Lines through Salt Lake City.
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.