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IAH to SEA: distance & flight time
Houston (George Bush Intercontinental Houston Airport) → Seattle (Seattle Tacoma International Airport)
1,872 mi
3,013 km · 1,627 nm
4h 8m
estimated nonstop flight time
-2h
time difference · heading northwest
See live IAH→SEA fares Phone-only fares on this route — call free
Flight time details
1,872 miles nonstop takes roughly 4h 8m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- IAH — George Bush Intercontinental Houston Airport · Houston, United States
- SEA — Seattle Tacoma International Airport · Seattle, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near IAH
- DWH · David Wayne Hooks Memorial Airport14 mi away
- IWS · West Houston Airport23 mi away
- AAP · Andrau Airpark23 mi away
- HOU · William P Hobby Airport24 mi away
Near SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Frequently asked questions
How far is IAH from SEA?
The flight distance from Houston (IAH) to Seattle (SEA) is 1,872 miles (3,013 km, 1,627 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAH to SEA?
A nonstop flight takes about 4h 8m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from IAH to SEA?
Nonstop service on IAH–SEA depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 4h 8m nonstop estimate.
What is the time difference between Houston and Seattle?
Seattle is 2 hours behind Houston.
What is the cheapest way to fly from IAH to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAH–SEA that never appear on search engines, with no booking fees.
Why are some IAH to SEA fares phone-only?
Consolidator contracts let us sell certain IAH–SEA tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.