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Flights from Houston to Seattle

Book direct flights from Houston to Seattle: One way flights from $139, round trip flights from $277. Find flight deals for the next 3 months below.

      • Cheapest nonstop
        IAH 2:34 PM
        4h 45m
        Nonstop
        SEA 5:19 PM
        Houston - Seattle | Thu, Sep 17 | Alaska Airlines
        SEA 5:34 PM
        4h 25m
        Nonstop
        IAH 11:59 PM
        Seattle - Houston | Tue, Sep 22 | Alaska Airlines
        $277 $360
        23% off
        23% off
        $360 $277
      • IAH 7:02 AM
        4h 40m
        Nonstop
        SEA 9:42 AM
        Houston - Seattle | Tue, Sep 15 | Alaska Airlines
        SEA 5:34 PM
        4h 25m
        Nonstop
        IAH 11:59 PM
        Seattle - Houston | Mon, Sep 21 | Alaska Airlines
        $277 $360
        23% off
        23% off
        $360 $277
      • IAH 6:30 AM
        8h 52m
        1 stop
        SEA 1:22 PM
        Houston - Seattle | Wed, Aug 26 | Frontier Airlines
        SEA 1:35 PM
        9h 5m
        1 stop
        IAH 12:40 AM
        Seattle - Houston | Mon, Aug 31 | Frontier Airlines
        $170 $360
        53% off
        53% off
        $360 $170
      • IAH 2:34 PM
        4h 45m
        Nonstop
        SEA 5:19 PM
        Houston - Seattle | Tue, Sep 15 | Alaska Airlines
        SEA 7:00 AM
        15h 9m
        1 stop
        IAH 12:09 AM
        Seattle - Houston | Mon, Sep 21 | Frontier Airlines
        $205
        43% off
        $360 $205
      • IAH 2:34 PM
        4h 45m
        Nonstop
        SEA 5:19 PM
        Houston - Seattle | Wed, Sep 16 | Alaska Airlines
        SEA 7:00 AM
        15h 9m
        1 stop
        IAH 12:09 AM
        Seattle - Houston | Mon, Sep 21 | Frontier Airlines
        $205
        43% off
        $360 $205
      • IAH 2:34 PM
        4h 45m
        Nonstop
        SEA 5:19 PM
        Houston - Seattle | Mon, Sep 14 | Alaska Airlines
        SEA 7:00 AM
        15h 9m
        1 stop
        IAH 12:09 AM
        Seattle - Houston | Mon, Sep 21 | Frontier Airlines
        $205
        43% off
        $360 $205
      • IAH 7:02 AM
        4h 40m
        Nonstop
        SEA 9:42 AM
        Houston - Seattle | Mon, Sep 7 | Alaska Airlines
        SEA 7:00 AM
        9h 49m
        1 stop
        IAH 6:49 PM
        Seattle - Houston | Mon, Sep 14 | Frontier Airlines
        $215
        40% off
        $360 $215
      • IAH 9:59 PM
        14h 1m
        1 stop
        SEA 10:00 AM
        Houston - Seattle | Sat, Sep 19 | Frontier Airlines
        SEA 7:00 AM
        15h 9m
        1 stop
        IAH 12:09 AM
        Seattle - Houston | Mon, Sep 21 | Frontier Airlines
        $223
        38% off
        $360 $223
      • IAH 7:02 AM
        4h 40m
        Nonstop
        SEA 9:42 AM
        Houston - Seattle | Thu, Sep 17 | Alaska Airlines
        SEA 7:00 AM
        15h 9m
        1 stop
        IAH 12:09 AM
        Seattle - Houston | Tue, Sep 22 | Frontier Airlines
        $224
        38% off
        $360 $224
      • IAH 8:53 PM
        15h 46m
        1 stop
        SEA 10:39 AM
        Houston - Seattle | Wed, Jul 22 | Frontier Airlines
        SEA 8:12 PM
        21h 46m
        1 stop
        IAH 7:58 PM
        Seattle - Houston | Tue, Jul 28 | Frontier Airlines
        $225
        38% off
        $360 $225
      • IAH 7:44 PM
        6h 43m
        1 stop
        SEA 12:27 AM
        Houston - Seattle | Mon, Sep 14 | Frontier Airlines
        SEA 7:00 AM
        15h 9m
        1 stop
        IAH 12:09 AM
        Seattle - Houston | Mon, Sep 21 | Frontier Airlines
        $226
        37% off
        $360 $226
      • IAH 8:43 PM
        15h 56m
        1 stop
        SEA 10:39 AM
        Houston - Seattle | Mon, Aug 17 | Frontier Airlines
        SEA 2:37 PM
        8h 3m
        1 stop
        IAH 12:40 AM
        Seattle - Houston | Wed, Aug 19 | Frontier Airlines
        $232
        36% off
        $360 $232
      • HOU 1:00 PM
        17h 25m
        1 stop
        SEA 2:00 PM
        Houston - Seattle | Thu, Jul 23 | Normal Airline
        SEA 3:00 PM
        6h
        Nonstop
        HOU 4:00 PM
        Seattle - Houston | Sat, Jul 25 | Normal Airline
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      • Cheapest nonstop
        IAH 2:34 PM
        4h 45m
        Nonstop
        SEA 5:19 PM
        Houston - Seattle | Wed, Aug 26 | Alaska Airlines
        $139 $181
        23% off
        23% off
        $181 $139
      • IAH 2:34 PM
        4h 45m
        Nonstop
        SEA 5:19 PM
        Houston - Seattle | Mon, Aug 31 | Alaska Airlines
        $139 $181
        23% off
        23% off
        $181 $139
      • IAH 6:50 AM
        19h 37m
        1 stop
        SEA 12:27 AM
        Houston - Seattle | Wed, Sep 9 | Frontier Airlines
        $63 $181
        65% off
        65% off
        $181 $63
      • IAH 6:30 AM
        7h 50m
        1 stop
        SEA 12:20 PM
        Houston - Seattle | Mon, Aug 31 | Frontier Airlines
        $63
        65% off
        $181 $63
      • IAH 6:50 AM
        19h 37m
        1 stop
        SEA 12:27 AM
        Houston - Seattle | Wed, Sep 16 | Frontier Airlines
        $64
        65% off
        $181 $64
      • IAH 6:30 AM
        28h 34m
        1 stop
        SEA 9:04 AM
        Houston - Seattle | Mon, Aug 10 | Frontier Airlines
        $65
        64% off
        $181 $65
      • IAH 6:30 AM
        28h 34m
        1 stop
        SEA 9:04 AM
        Houston - Seattle | Tue, Aug 11 | Frontier Airlines
        $65
        64% off
        $181 $65
      • IAH 6:50 AM
        19h 37m
        1 stop
        SEA 12:27 AM
        Houston - Seattle | Sat, Sep 12 | Frontier Airlines
        $82
        55% off
        $181 $82
      • IAH 6:30 AM
        28h 49m
        1 stop
        SEA 9:19 AM
        Houston - Seattle | Mon, Aug 17 | Frontier Airlines
        $101
        44% off
        $181 $101
      • IAH 6:30 AM
        8h 52m
        1 stop
        SEA 1:22 PM
        Houston - Seattle | Tue, Aug 18 | Frontier Airlines
        $101
        44% off
        $181 $101
      • IAH 11:35 AM
        27h 47m
        1 stop
        SEA 1:22 PM
        Houston - Seattle | Sat, Sep 5 | Frontier Airlines
        $105
        42% off
        $181 $105
      • IAH 6:50 AM
        16h 18m
        1 stop
        SEA 9:08 PM
        Houston - Seattle | Sat, Sep 19 | Frontier Airlines
        $107
        41% off
        $181 $107
      • HOU 1:00 PM
        17h 25m
        1 stop
        SEA 2:00 PM
        Houston - Seattle | Thu, Jul 23 | Normal Airline
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Find cheap airlines flights from Houston to Seattle

You can choose from 3 airlines that fly from Houston to Seattle, including Alaska Airlines, United Airlines, and Frontier Airlines. Alaska Airlines has lowest fares on this route.
Alaska Airlines logo Alaska Airlines
United Airlines logo United Airlines
Frontier Airlines logo Frontier Airlines
Airlines are determined based on actual purchased flight tickets from Houston to Seattle according to previous 12 months data from Trip.com.

Flight Info | Houston to Seattle

The distance between Houston and Seattle is approximately 3,043.14 km. It takes around 4 hours 54 minutes on average to fly from Houston to Seattle. Based on Trip.com's data travel demand peaks in July. The off-season for travel is November.

Cheapest one-way flight price $63
Cheapest round-trip ticket price $170
Off-season for travel November
Peak season for travel July
Flight distance 3,043.14 km
Average flight time 4 hours 54 minutes
Popular airline Alaska Airlines
Flight statistics for the Houston–Seattle route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com price insights on flights from Houston to Seattle

Which month has the cheapest one-way flights from Houston to Seattle?

The average price of one-way flights from Houston to Seattle purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Houston to Seattle is November, with an average price of $177; while the month with the highest flight price is usually February, with an average price of up to $385.

$385
$281
$177
$73
    Cheapest
  • $254
    Jul
  • $245
    Aug
  • $287
    Sep
  • $218
    Oct
  • $177
    Nov
  • $314
    Dec
  • $201
    Jan
  • $385
    Feb
  • $256
    Mar
  • $256
    Apr
  • $261
    May
  • $313
    Jun

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 $63 on Cheapest nonstop routes (e.g. IAH to SEA on Wed, Sep 9), while Frontier Airlines offers Cheapest nonstop round-trips from $170 departing on Wed, Aug 26 and returning on Mon, Aug 31.
  • At the moment, you can catch a nonstop flight from Houston to Seattle with the following airlines, including: Alaska Airlines United Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 4 hours 54 minutes to fly from Houston (HOU) to Seattle (SEA).
  • 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.
  • Based on Trip.com data in the past 4 weeks, there is 55 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 -- AS241 (08:15)
  • 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 Wed, Sep 9, with one-way flights priced at just $63.
    · 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.
  • The cheapest months to fly from Houston to Seattle is November, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Houston to Seattle on July 21, 2026 with Frontier Airlines, with prices starting at $261.
  • 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: Seattle-Tacoma International Airport (SEA) King County (Boeing Field) International Airport (BFI) Kenmore Air Harbor Seaplane Base (LKE).
  • The time difference between Seattle and Houston is 2h.
  • 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.

Explore More Popular Flights

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
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.
Cancellation/change due to a flight schedule change:
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.