Are there direct flights?

Yes, United Airlines operates direct flights between IAH and SEA.

How long is the flight?

A direct flight takes about 4 hours and 30 minutes.

What is the best way to travel?

Flying is the most efficient and practical method.

Yes, downtown Seattle is very walkable and has excellent public transit.

What is the time difference?

Seattle is two hours behind Houston.

Houston

Seattle

Flight

Houston to Seattle

Updated: 28 May 2026

The most practical way to travel from Houston to Seattle is by air, connecting George Bush Intercontinental Airport (IAH) to Seattle-Tacoma International Airport (SEA). Direct flights take approximately 4.5 hours. Driving is a massive cross-country journey of over 3,500 kilometers, taking roughly 32 hours via I-45 and I-90. Seattle is a major tech and cultural hub, while Houston is a major energy center. Flying is highly recommended to save time.

Total Distance: Driving distance 3,550 km, Air distance 3,000 km.

Fastest Way

Direct flight from IAH to SEA takes 4 hours 30 minutes.

Cheapest Way

Booking a round-trip flight at least four weeks in advance is the cheapest option.

Compare Houston to Seattle Routes

Flight

Direct

Duration

4 hours 30 mins

Avg Price

$250-$600

Operator

United Airlines

Route

IAH to SEA

United offers the most frequent direct service on this route.

Travel Tips

Airport Transit
Use the Link Light Rail or ride-share to get from SEA to downtown Seattle.
Weather
Seattle weather is often rainy and cloudy; pack a raincoat if traveling at any time of year.
Dining
Try the diverse food scene in Seattle, from seafood to fine dining.
Booking
Check for flight deals on Tuesday afternoons for the best prices.
Packing
Bring comfortable walking shoes for exploring Seattle's diverse neighborhoods.