Seattle to Houston (SEA–IAH) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
SEA–IAH is served by 3 airlines with nonstop service. United Airlines, Alaska Airlines and All Nippon Airways lead the route. The flight covers 1,873 miles in approximately 4h 25m. Beyond nonstop, 1-stop connecting options are also available.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines Also: BR, OZ | 43 | 320, 738, 739, 7M9, B38M, B39M | 4h21-4h40 | Star Alliance | BR, OZ | |
| AS Alaska Airlines Also: AY, HA, JL, QR | 28 | 73J, 7M9, B39M | 4h23-4h26 | Oneworld | AY, HA, JL, QR | |
| NH All Nippon Airways | 1 | – | – | Star Alliance | – |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach Houston from Seattle
| Metric | SEA→IAH | BFI→IAH | PAE→IAH |
|---|---|---|---|
| Distance from SEA | – | 5 mi | 32 mi |
| Nonstop airlines | 3 | 1 | 1 |
| Weekly flights | 111 | – | 1 |
| Flight time | 4h 25m | 4h 54m | 3h 52m |
| Departure OTP | 28% | – | – |
Travel Essentials
SEA: PDT · IAH: CDT
When it's 6:00 PM in Seattle, it's 8:00 PM in Houston.
Link Light Rail runs from downtown Seattle (Westlake station) to the airport in 38 minutes ($3.50 peak). Trains run every 6–12 minutes during peak hours from 5am to 1am. Ride-shares run $30–50 from downtown; SR-99 and I-5 can be heavily congested southbound during afternoon rush (3–7pm).
Sound Transit 574 express bus serves Tacoma ($2.50–4). Sounder commuter rail connects Tacoma to the airport area via a shuttle.
No direct rail from IAH. The METRO bus 102 (IAH Express) runs to downtown Houston's transit center (60–90 min, $1.25). Taxis to downtown Houston cost $50–70. Ride-hails pick up at the designated Rideshare zones outside baggage claim on the lower level.IAH has five terminals (A–E) connected by an underground tunnel with trams. Terminal D handles international arrivals. Rental car agencies are in a consolidated facility adjacent to Terminal C; a free IAH Connector bus runs between terminals and the rental car center. The Galleria / Uptown area costs $35–50 by ride-hail.
Humid subtropical climate. Hot, humid, and wet for much of the year. Summers are brutal (33–38°C) with high humidity and near-daily afternoon thunderstorms. Severe storms with hail and high winds regularly cause ground stops from April through September. Houston's flooding risk is significant. Heavy rain events, including tropical system remnants, have flooded airport roads, cutting off surface access even when the airport itself remains operational.
Winters are mild (5–18°C) with occasional ice storms. These are rare but highly disruptive when they occur. Hurricane season (June–November) requires monitoring for Gulf storms. October through March has the best flying weather.
SEA–IAH Quick Facts
Frequently Asked Questions
Flights from SEA to IAH
Seattle–Tacoma International Airport (SEA) and George Bush Intercontinental Airport (IAH) are connected by nonstop service from United Airlines, Alaska Airlines and All Nippon Airways. With 111 weekly departures, this is a heavily served route.
SEA to IAH Flight Duration and Schedule
Nonstop flight time from SEA to IAH is about 4 hours 25 minutes gate to gate. The route covers a distance of 1,873 miles (3,013 km). There are approximately 111 weekly flights outbound and 116 return, totaling 227 flights per week in both directions.
Connecting Options and Alternatives
1-stop connecting options are also available, commonly via Austin Bergstrom, Dallas Fort Worth and Salt Lake City. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Seattle (BFI) and Everett (PAE).