What are the cheapest airlines flying from Houston to Seattle round-trip?

Currently priced at $226, Frontier will fly you from Houston to Seattle and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Hawaiian Airlines - these airlines can fly you to your destination from $237 and $244, respectively. Users have found that Frontier is 39% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Houston to Seattle one-way?

$149 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on United Airlines and Sun Country Air, with prices starting from $150 and $155, respectively.

How far ahead should I book a flight from Houston to Seattle?

The price you pay for your flight from Houston to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 82 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Houston to Seattle?

Currently, January is the cheapest month in which you can book a flight from Houston to Seattle (average of $238). Flying from Houston to Seattle in June is currently the most expensive (average of $389). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from Houston to Seattle?

Travelers seeking maximum savings on their Houston to Seattle flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

What are the cheapest flights from Houston to Seattle?

While on average a flight from Houston to Seattle is generally $317, our data shows the cheapest flight currently is $72. When looking at the most popular route, (Houston Hobby - Seattle/Tacoma Intl), you can expect to pay $218 for that flight.

What are the most popular airlines that fly from Houston to Seattle?

Consider American Airlines, Alaska Airlines or Delta when booking your flight. These represent the most popular airlines when flying from Houston to Seattle.

Where are the most common layover locations when flying from Houston to Seattle?

Houston to Seattle flights have a layover in Dallas most of the time.

Where are the least popular layover locations for Houston to Seattle flights?

Houston to Seattle flights that have layovers will least frequently stop in Denver.

What are some popular things to do or see while on a layover in Dallas?

If you're on a layover in Dallas and looking for things to do, consider visiting American Airlines Center, Dallas World Aquarium, or Dos Equis Pavilion. American Airlines Center, Dallas World Aquarium, and Dos Equis Pavilion can be accessed by traveling approximately 15.0 mi, 15.5 mi, and 18.3 mi, respectively from Dallas/Fort Worth. Travelers can rent a car at Dallas/Fort Worth for an average daily rate of $51 to make sightseeing during their layover a little easier.

What is the cheapest day to fly round-trip from Houston to Seattle?

Flying to your destination on a Tuesday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Seattle. Check prices with Cheapflights to find a great deal for your trip.

How far in advance should I book a flight from Houston to Seattle?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 31 days in advance, which can save you up to 109% on flights from Houston to Seattle compared to booking the week you need them. Waiting 31 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $411. For sooner than that we have options available in the next 3 days from $652.

What is the cheapest month to fly from Houston to Seattle?

The best pricing can be found in the month of September. Prices to Seattle from Houston average $371. You can even find prices in September for less than $371, as users have found deals to Seattle from as low as $157. The month of December appears to be one of the more expensive times to travel to Seattle from Houston. Flying in the targeted month can save you up to 26%.

What is the cheapest time of day to fly from HOU to SEA?

A simple way to save on the total cost of your ticket is to fly from Houston to Seattle in the morning. If you’re flexible enough to do this you can expect to save up to 25% on your trip compared to booking a flight at noon.

What airport do you fly into for flights to Seattle from Houston?

Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Houston. On average, Seattle/Tacoma Intl has 1 inbound flight from Houston per day from 8 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

Can I find deals for flights from Houston to Seattle that include hotel bookings?

Yes. In addition to deals on Houston to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Houston to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Houston to Seattle.

Can I find deals for business class flights from Houston to Seattle?

Yes. Cheapflights offers flight deals from Houston to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$149+ Flights from Houston to Seattle

Round-trip from	$220 (CheapOair)
One-way from	$149 (Southwest)
Popular in	December
Cheapest in	September
Average price	$412

United's Economy Plus offers extra legroom, enhancing comfort for medium-haul flights.

United's Polaris Lounges offer showers and dining, ideal for premium passengers.

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$102	Average$207	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$129	Average$232	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$138	Average$276	FlexibilityNo cancel fee	On-timeN/A
Hawaiian Airlines	Cheapest$184	Average$387	FlexibilityNo cancel fee	On-time85%
Alaska Airlines	Cheapest$216	Average$388	FlexibilityNo cancel fee	On-time75%
Southwest	Cheapest$237	Average$425	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$240	Average$447	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$256	Average$424	FlexibilityNo cancel fee	On-time71%

$149+ Cheap flights from Houston to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Houston to Seattle/Tacoma Intl are usually found in September or October, booked 82 days in advance, depart on a Monday or Thursday and return on a Thursday

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Cheapest flights from Houston to SeattleExplore the most affordable flight options available from Houston to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Explore the most affordable flight options available from Houston to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

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Best time to book a flight from Houston to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Houston with our price prediction graph.

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Everything you need to know about your flight from Houston to Seattle

How far ahead should I book a flight from Houston to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Houston to Seattle. Price data was last updated on July 25, 2025.

What is the cheapest month to book a flight from Houston to Seattle?

What is the cheapest time of day to fly from HOU to SEA?

Find hourly flight availability from Houston to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2025.

What is the cheapest day to fly from Houston to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Houston to Seattle. Price data was last updated on December 16, 2024.

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Houston to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Houston to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Seattle from Houston?

What are the cheapest airlines flying from Houston to Seattle round-trip?

What are the cheapest airlines to fly from Houston to Seattle one-way?

What are the cheapest flights from Houston to Seattle?

Where are the most common layover locations when flying from Houston to Seattle?

What are some popular things to do or see while on a layover in Dallas?

Where are the least popular layover locations for Houston to Seattle flights?

Can I find deals for flights from Houston to Seattle that include hotel bookings?

How can I find direct flights from Houston to Seattle?

Can I find deals for business class flights from Houston to Seattle?

What is the cheapest month to book a flight from Houston to Seattle?

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Cheapest flights from Houston to Seattle
Explore the most affordable flight options available from Houston to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.