Cheap flights from Seattle to Houston from $144

The month of March is, on average, the cheapest month to fly to Houston from Seattle, with most prices found around $380. The month of January is another great option to travel to Houston, with average flight prices from Seattle averaging around $392.

On average, the least expensive day to fly to Houston from Seattle is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $472. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Houston on Tuesday is $650.

Our data shows that the cheapest Seattle to Houston flights are usually those with departure times in the afternoon. Our users have found flights to Houston in the afternoon for as low as $448. Try not to purchase tickets in the evening because they tend to be around $608. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Seattle/Tacoma Intl to Houston George Bush Intcntl for the best Seattle/Tacoma Intl - Houston flight prices

You are more likely to see cheaper flights to Houston from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston for around $451 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston from Seattle for as low as $388 on momondo.

There are 4 cabin classes available to choose from on Seattle to Houston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Delta, Southwest, and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Houston

Alaska Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Houston from Seattle according to our data. Alaska Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Houston. Keep in mind that there are 6 different airlines that fly to Houston on a routine basis, so you have a few additional options to choose from.

The number of flights available between Seattle and Houston is 4 per day as of November 2026. The most frequent departure time is 5:00PM, with 52% of daily flights leaving in the afternoon.

30 flights are operational weekly from Seattle to Houston as of November 2026. The most popular departure day for this route is Mon, with 37% of flights per week taking off on this day.