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Cheap Flights from Seattle to Houston | EazAir

Travellers

Seattle to Houston flight insights

Average flight time

~4h 34m (estimated)

SEA → IAH

Cheapest month

—

Based on cached fare history

Cheapest cached price

$208

Checking live fares…

Prices shown may not be current. Last checked: Sep 1, 2026.

Planning a trip from Seattle to Houston? The average flight time on this route is ~4h 34m (estimated). The lowest fare we have cached for this route is $208 (last checked Sep 1, 2026).

Seattle to Houston 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 Seattle to Houston on Eazair
OriginSeattle (SEA)
DestinationHouston (IAH)
Average Flight Time—
Cheapest Month to Fly—
Current Lowest Fare$208
Fares Last CheckedSep 1, 2026

Flight deals from Seattle to Houston

Traveling from the Pacific Northwest to the Gulf Coast takes approximately four hours and twenty minutes on a nonstop flight from Seattle to Houston. Passengers cover a flight distance of roughly 1,894 miles between Seattle-Tacoma International Airport and either George Bush Intercontinental Airport or William P. Hobby Airport. Connecting itineraries through hubs like Dallas or Denver will add two to four additional hours to the total transit time between these two major metropolitan areas. Several major carriers operate regular service for passengers flying from Seattle to Houston. United Airlines maintains a strong presence on this route with multiple daily nonstop departures landing directly at George Bush Intercontinental Airport. Alaska Airlines also provides direct flights connecting the Puget Sound region to southeast Texas, while Southwest Airlines offers scheduled service primarily touching down at William P. Hobby Airport. Passenger demand for travel from Seattle to Houston peaks during the winter and early spring months, particularly between December and March, as Pacific Northwest residents seek warmer Texas temperatures. July and August often present lower airfare opportunities since fewer travelers choose to visit Texas during peak summer heat. Securing tickets at least four weeks ahead of your planned departure yields the most competitive pricing for this specific domestic corridor.

View of Houston, a popular flight destination from Seattle

About Houston

Popular areas to know in Houston include Montrose, Rice Village, and Midtown.

A humid subtropical climate with hot, humid summers; winters are mild, making late fall through early spring the more comfortable stretch to visit.

Frequently asked questions

How long does a nonstop flight from Seattle to Houston take?
Direct flights from Seattle to Houston average four hours and twenty minutes of total air time.
Which airports serve flights traveling from Seattle to Houston?
Departures leave from Seattle-Tacoma International Airport (SEA) and arrive at either George Bush Intercontinental Airport (IAH) or William P. Hobby Airport (HOU) in Houston.
Which airlines provide direct flights from Seattle to Houston?
United Airlines and Alaska Airlines fly direct into George Bush Intercontinental Airport, while Southwest operates direct routes from Seattle into Houston Hobby Airport.
When is the best time to book flights from Seattle to Houston for the lowest price?
Travelers should purchase their Seattle to Houston tickets approximately four to six weeks before departure to secure the most competitive fares.
What are the busiest months for air travel from Seattle to Houston?
December through March see the highest volume of passengers flying from Seattle to Houston, leading to higher ticket prices during the winter season.
During which month are flights from Seattle to Houston typically the cheapest?
August historically offers the lowest airfare for the Seattle to Houston route due to reduced passenger demand during the peak of the Texas summer heat.
What are the standard checked baggage fees for economy flights from Seattle to Houston?
Most major carriers flying from Seattle to Houston charge between thirty and forty dollars for the first checked bag on standard economy tickets, though Southwest Airlines includes two free checked bags.
What are the most common layover cities for connecting flights from Seattle to Houston?
Passengers booking connecting flights from Seattle to Houston frequently stop in Dallas, Denver, or Salt Lake City, depending on the chosen carrier.
Are morning or evening departures cheaper when flying from Seattle to Houston?
Early morning departures before seven o'clock generally feature lower base fares for the Seattle to Houston route compared to mid-afternoon flights.
What is the total flight distance between Seattle and Houston?
The direct flight path from Seattle-Tacoma International Airport to Houston covers roughly 1,894 miles across the United States.
How far is it from Seattle to Houston?
The straight-line distance from Seattle to Houston is about 1,872 miles.
What ID do I need to fly from Seattle to Houston?
Since Seattle to Houston 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 Seattle to Houston?
Based on a recent live fare search, Delta Air Lines, United Airlines and American Airlines had bookable flights on the Seattle to Houston route.
What's the weather usually like in Houston?
A humid subtropical climate with hot, humid summers; winters are mild, making late fall through early spring the more comfortable stretch to visit.

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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