Cheap flights from Portland to Houston from $117

The month of January is, on average, the cheapest month to fly to Houston from Portland, with most prices found around $280. The month of May is another great option to travel to Houston, with average flight prices from Portland averaging around $352.

Our data shows that the cheapest Portland to Houston flights are usually those with departure times at noon. Our users have found flights to Houston at noon for as low as $484. Try not to purchase tickets in the evening because they tend to be around $585. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Portland to Houston George Bush Intcntl for the best Portland - Houston flight prices

You are more likely to see cheaper flights to Houston from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston for around $399 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston from Portland for as low as $321 on momondo.

Frontier, Delta, and Southwest are the most popular carriers operating from Portland to Houston

Alaska Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Houston from Portland according to our data. Alaska Airlines is the first choice among our users, with 47% 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.

As of November 2026, 2 flights take off from Portland and land in Houston each day. The most common flight departure time for this route is 7:00AM, with 66% of daily flights taking off at noon.

As of November 2026, there are 17 flights per week flying from Portland to Houston. The most common day of the week flights depart is Tue, with 29% of flights taking off on this day.