Cheap Flights from Houston to Seattle from US$117

Frequently Asked Questions

• What are the cheapest flights from Houston to Seattle (HOU-SEA)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as US$117 on Cheapest nonstop routes (e.g. IAH to SEA on Tue, Jul 21), while Frontier Airlines offers Cheapest nonstop round-trips from US$226 departing on Wed, Jul 22 and returning on Tue, Jul 28.

• Which airlines offer direct flights from Houston to Seattle?

  At the moment, you can catch a nonstop flight from Houston to Seattle with the following airlines, including: Alaska Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from Houston to Seattle?

  It takes about 4 hours 52 minutes to fly from Houston to Seattle.

• When is the best time to book flights from Houston to Seattle?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Houston to Seattle is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Houston to Seattle?

  Based on Trip.com data in the past 4 weeks, there is 53 flight per week flying from Houston to Seattle. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS453 (07:09)

• How can I find the best deals on flights from Houston to Seattle?

  To find best deals on flights from Houston to Seattle, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Jul 21, with one-way flights priced at just US$117.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Alaska Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Seattle travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Houston (HOU) to Seattle (SEA) the cheapest?

  The cheapest months to fly from Houston to Seattle is November, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Houston to Seattle on?

  After crunching the numbers on our June flight calendar, it's currently cheapest to fly from Houston to Seattle on June 30, 2026 with Frontier Airlines, with prices starting at US$117.

• Which airports can I fly to for Seattle from Houston?

  You can land at any one of the following hubs in Seattle, with George Bush Intercontinental Airport to Seattle-Tacoma International Airport (IAH-SEA) is by far the most common option on this route: King County (Boeing Field) International Airport (BFI) Kenmore Air Harbor Seaplane Base (LKE) Seattle-Tacoma International Airport (SEA).

• Is there any time difference between Houston and Seattle?

  The time difference between Seattle and Houston is 2h.

• How do I change or cancel my ticket from Houston to Seattle?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.