Flights from Houston to Seattle
North AmericaYear-round

Cheap Flights from Houston to Seattle

Track economy fares on the IAHSEA route and get alerts when prices drop.

From
Houston
IAH
To
Seattle
SEA

Route Intelligence: HoustonSeattle

Flight Duration

4 hr 30 min (Direct)

Price Guidance

A good deal is under $250 roundtrip. Standard fare is $400+.

Peak Season

June to August

Top Airlines

United Airlines, Alaska Airlines, Southwest Airlines

Booking Tip

Book 4-6 weeks in advance for domestic routes like this. Flying Tuesday or Wednesday can save 10-20% compared to weekend fares.

Track HoustonSeattle Fares

Set your target price and FlightKitten will scan this route twice daily. The instant economy fares drop below your budget, you'll get an email with the price, airline, and a direct booking link.

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Flying Business Class?

If you're considering business class on this route, BusinessClassSignal.com is a dedicated tool that tracks premium cabin fares. They alert you when business & first class prices drop — worth checking out if you fly up front.

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Other Routes to Seattle

More Destinations in North America

Route Briefing: Houston to Seattle

Trading Houston's heat and humidity for Seattle's misty, evergreen-draped skyline is one of those trips that feels like stepping into a completely different world — and the best part is it only takes about four and a half hours on a direct flight to get there. United Airlines, Alaska Airlines, and Southwest all serve this route year-round, so you've got solid options and real competition keeping fares honest. A roundtrip under $250 is genuinely achievable if you time it right, while waiting too long or flying last-minute can push you well past $400.

Seattle earns its nickname the Emerald City honestly. The surrounding landscape of Puget Sound, the Olympic Mountains to the west, and Mount Rainier looming to the southeast creates a backdrop that never gets old. The city itself has a distinct energy — creative, outdoorsy, and quietly proud of its coffee obsession. This is, after all, the city that gave the world Starbucks, but the independent café scene here is just as compelling, with roasters and neighborhood spots that take their craft seriously.

Pike Place Market is the kind of place that rewards slow wandering. Beyond the famous fish-throwing vendors, you'll find local produce, flowers, artisan food stalls, and some of the best people-watching in the Pacific Northwest. From there, the waterfront, Capitol Hill's vibrant nightlife and restaurant scene, and the quirky shops of Fremont are all within easy reach.

Summer — June through August — is peak season for good reason. Days are long, temperatures are comfortable, and the outdoor culture fully comes alive with hiking, kayaking, and ferry rides across the Sound. That said, Seattle in the shoulder seasons has its own moody charm, and you'll share it with far fewer tourists.

From Seattle-Tacoma International Airport, light rail connects directly into downtown, making it one of the more straightforward airport-to-city commutes you'll find in any major American city. Skip the rental car for your first day at least — Seattle's core neighborhoods are walkable and well-connected.

On the booking front, aim to lock in your ticket four to six weeks out, and if your schedule has any flexibility, flying on a Tuesday or Wednesday rather than a Friday or Sunday can shave a meaningful amount off the fare. That extra money is better spent on a bowl of clam chowder at the market or a ferry ticket to Bainbridge Island.

How much are flights from Houston to Seattle in 2026?

Flight prices from Houston (IAH) to Seattle (SEA) vary significantly depending on the season, day of the week, and how far in advance you book. A good deal is under $250 roundtrip. Standard fare is $400+. Popular carriers on this route include United Airlines, Alaska Airlines, Southwest Airlines. FlightKitten eliminates the guesswork by monitoring 220+ airlines twice daily and alerting you the moment economy fares hit your target price.

How does FlightKitten track Houston to Seattle fares?

FlightKitten scans over 220 airlines twice every day for economy fares on the IAH to SEA route. When you set a target price, FlightKitten continuously monitors this route and sends an email alert the moment fares drop below your budget. Each alert includes the exact fare, airline, dates, and an AI-powered briefing that explains whether the deal is genuinely good compared to historical pricing on this route. No more obsessive price checking — set your budget and let FlightKitten do the watching.

Pro tip: Book 4-6 weeks in advance for domestic routes like this. Flying Tuesday or Wednesday can save 10-20% compared to weekend fares.

Looking for business class deals on this route? We recommend checking out BusinessClassSignal.com — a dedicated premium cabin fare tracker that's worth a look if you fly up front.