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Route guide

Cheap Flights from Houston to Seattle | EazAir

Travellers

Houston to Seattle flight insights

Average flight time

~4h 34m (estimated)

IAH → SEA

Cheapest month

—

Based on cached fare history

Cheapest cached price

$277

Checking live fares…

Prices shown may not be current. Last checked: Sep 2, 2026.

Planning a trip from Houston to Seattle? The average flight time on this route is ~4h 34m (estimated). The lowest fare we have cached for this route is $277 (last checked Sep 2, 2026).

Houston to Seattle covers a straight-line distance of about 1,872 miles. Based on that distance, a nonstop flight would take approximately ~4h 34m (estimated). Actual flight time varies by airline, aircraft and routing.

Route Quick Facts

Quick facts for flights from Houston to Seattle on Eazair
OriginHouston (IAH)
DestinationSeattle (SEA)
Average Flight Time—
Cheapest Month to Fly—
Current Lowest Fare$277
Fares Last CheckedSep 2, 2026

Flight deals from Houston to Seattle

Direct flights from Houston to Seattle typically take about four hours and thirty minutes to cover the 1,894-mile distance. Travelers depart from either George Bush Intercontinental Airport (IAH) or William P. Hobby Airport (HOU) and arrive at Seattle-Tacoma International Airport (SEA). Nonstop routes connecting these tech and energy hubs provide quick access from the Texas Gulf Coast to the Pacific Northwest. United Airlines operates multiple daily nonstop flights from George Bush Intercontinental Airport (IAH) to Seattle-Tacoma International Airport (SEA). Alaska Airlines also provides direct service on this exact route, while Southwest Airlines occasionally offers nonstop options out of William P. Hobby Airport (HOU). Connecting flights through hubs like Denver or Dallas expand the daily flight schedule for passengers traveling between Houston and Seattle. Summer represents the busiest travel season for the Houston to Seattle route, as Texans seek relief from July and August heat by visiting the cooler Pacific Northwest. Late spring and early fall offer milder weather and fewer crowds at Seattle-Tacoma International Airport for arriving southerners. Securing tickets at least four weeks ahead of departure usually yields lower fares for this cross-country Houston to Seattle journey.

View of Seattle, a popular flight destination from Houston

About Seattle

Popular areas to know in Seattle include Capitol Hill, Ballard, and Fremont.

Mild, wet winters and dry, mild summers — the Pacific Northwest's rainy reputation is strongest from October through April.

Frequently asked questions

How long does a direct flight from Houston to Seattle take?
Nonstop flights from Houston to Seattle average four hours and thirty minutes from takeoff to touchdown.
Which airports serve flights from Houston to Seattle?
Flights originate from either George Bush Intercontinental Airport or William P. Hobby Airport in Houston and land at Seattle-Tacoma International Airport.
Which airlines fly nonstop from Houston to Seattle?
United Airlines and Alaska Airlines fly direct from Houston to Seattle, operating primarily out of George Bush Intercontinental Airport.
When is the cheapest time of year to fly from Houston to Seattle?
January and February typically offer the lowest fares for flights from Houston to Seattle, following the busy holiday travel season.
How far in advance should I book my ticket from Houston to Seattle?
Purchasing your Houston to Seattle flight at least four to six weeks before your desired departure date usually secures the best pricing.
Do airlines charge extra for checked bags on the Houston to Seattle route?
United and Alaska Airlines usually charge baggage fees on standard economy tickets from Houston to Seattle, whereas Southwest Airlines allows two free checked bags if you depart from Hobby Airport.
Are there early morning flights available from Houston to Seattle?
Yes, the earliest flights from Houston to Seattle usually depart George Bush Intercontinental Airport around 6:00 AM, arriving in Washington by mid-morning.
What is the flight distance from Houston to Seattle?
The flight distance between Houston and Seattle is approximately 1,894 miles across the continental United States.
Can I take a red-eye flight from Houston to Seattle?
Direct red-eye flights from Houston to Seattle are rare, though some late-evening departures with layovers arrive early the next morning.
What are common layover cities when flying from Houston to Seattle?
Passengers on connecting flights from Houston to Seattle frequently stop in Denver, Salt Lake City, or Dallas before continuing to the Pacific Northwest.
How far is it from Houston to Seattle?
The straight-line distance from Houston to Seattle is about 1,872 miles.
What ID do I need to fly from Houston to Seattle?
Since Houston to Seattle is a domestic US flight, you'll need a REAL ID-compliant driver's license or another TSA-accepted form of ID, such as a valid US passport. A standard, non-compliant driver's license alone is no longer accepted at TSA checkpoints.
Which airlines operate flights from Houston to Seattle?
Based on a recent live fare search, United Airlines, American Airlines and Delta Air Lines had bookable flights on the Houston to Seattle route.
What's the weather usually like in Seattle?
Mild, wet winters and dry, mild summers — the Pacific Northwest's rainy reputation is strongest from October through April.

Airline baggage policies

Baggage allowances differ significantly between fare classes (Basic/Light vs. Standard/Flex) and can change over time. Always verify the exact allowance for your specific fare with the airline before you fly.

General airline baggage policy reference
AirlineCabin bagChecked bag
Delta Air Lines1 carry-on + 1 personal item on most fares1 checked bag typically included on Main Cabin and above; Basic Economy usually excludes it
American Airlines1 carry-on + 1 personal item on most fares1 checked bag typically included on Main Cabin and above; Basic Economy usually excludes it
United Airlines1 carry-on + 1 personal item on most fares1 checked bag typically included on Economy and above; Basic Economy usually excludes it
Southwest Airlines1 carry-on + 1 personal item2 checked bags included on every fare — a long-standing, well-known Southwest policy
JetBlue Airways1 personal item on the cheapest (Blue Basic) fare; a carry-on is added on higher faresNot included on Blue Basic; typically included from Blue Plus and above
Alaska Airlines1 carry-on + 1 personal item on most fares1 checked bag typically included on Main and above; Saver fares usually exclude it
Spirit Airlines1 personal item included; a full-sized carry-on is a paid add-onNot included on the base fare — a paid add-on at every fare tier
Frontier Airlines1 personal item included; a full-sized carry-on is a paid add-onNot included on the base fare — a paid add-on at every fare tier

Travel tips

Arrive early for domestic flights

TSA generally recommends arriving at least 2 hours before a domestic departure, more at larger hub airports during peak travel periods.

Pack a mixed carry-on

Keep a change of clothes, chargers, and any essentials in your carry-on rather than only your checked bag, in case of a delay or a bag that doesn't arrive with you.

Ease jet lag on longer routes

On longer cross-country flights, adjusting your sleep schedule a day or two before departure and staying hydrated in flight can reduce jet lag on arrival.

Screenshot your confirmation

Save a screenshot or PDF of your booking confirmation and boarding pass before you travel, in case you lose signal or battery at the airport.

Check in online when it opens

Most airlines open online check-in 24 hours before departure — checking in early can help with seat selection and, on some airlines, boarding group assignment.

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