Trip.com
>
Flights
>
United States
>
Washington
>
Flights to Seattle
Hotels in Seattle
>
Cheap Flights from Houston to Seattle

Explore the cheapest flights from Houston to Seattle in the next three months. Based on Trip.com's data from the latest 7 days, one-way direct flights start at S$ 179, and round-trip direct tickets start at S$ 358.

      • Cheapest nonstop
        IAH 14:34
        4h 45m
        Direct
        SEA 17:19
        Houston - Seattle | Sun, Sep 20 | Alaska Airlines
        SEA 17:34
        4h 25m
        Direct
        IAH 23:59
        Seattle - Houston | Sun, Sep 27 | Alaska Airlines
        S$ 358 S$ 385
        7% off
        7% off
        S$ 385 S$ 358
      • IAH 08:00
        4h 41m
        Direct
        SEA 10:41
        Houston - Seattle | Sun, Aug 16 | Alaska Airlines
        SEA 23:57
        4h 23m
        Direct
        IAH 06:20
        Seattle - Houston | Fri, Aug 21 | Alaska Airlines
        S$ 358 S$ 385
        7% off
        7% off
        S$ 385 S$ 358
      • IAH 06:30
        8h 52m
        1 stop
        SEA 13:22
        Houston - Seattle | Tue, Sep 1 | Frontier Airlines
        SEA 13:35
        9h 5m
        1 stop
        IAH 00:40
        Seattle - Houston | Sun, Sep 6 | Frontier Airlines
        S$ 219 S$ 385
        43% off
        43% off
        S$ 385 S$ 219
      • IAH 14:34
        4h 45m
        Direct
        SEA 17:19
        Houston - Seattle | Sun, Sep 20 | Alaska Airlines
        SEA 07:00
        15h 9m
        1 stop
        IAH 00:09
        Seattle - Houston | Sun, Sep 27 | Frontier Airlines
        S$ 264
        31% off
        S$ 385 S$ 264
      • IAH 07:02
        4h 40m
        Direct
        SEA 09:42
        Houston - Seattle | Sun, Sep 13 | Alaska Airlines
        SEA 07:00
        9h 49m
        1 stop
        IAH 18:49
        Seattle - Houston | Sun, Sep 20 | Frontier Airlines
        S$ 277
        28% off
        S$ 385 S$ 277
      • IAH 20:53
        15h 46m
        1 stop
        SEA 10:39
        Houston - Seattle | Tue, Jul 28 | Frontier Airlines
        SEA 20:12
        21h 46m
        1 stop
        IAH 19:58
        Seattle - Houston | Mon, Aug 3 | Frontier Airlines
        S$ 291
        24% off
        S$ 385 S$ 291
      • IAH 19:44
        6h 43m
        1 stop
        SEA 00:27
        Houston - Seattle | Sun, Sep 20 | Frontier Airlines
        SEA 07:00
        15h 9m
        1 stop
        IAH 00:09
        Seattle - Houston | Sun, Sep 27 | Frontier Airlines
        S$ 291
        24% off
        S$ 385 S$ 291
      • IAH 06:30
        8h 52m
        1 stop
        SEA 13:22
        Houston - Seattle | Fri, Aug 28 | Frontier Airlines
        SEA 14:37
        8h 3m
        1 stop
        IAH 00:40
        Seattle - Houston | Fri, Sep 4 | Frontier Airlines
        S$ 314
        18% off
        S$ 385 S$ 314
      • IAH 06:30
        28h 49m
        1 stop
        SEA 09:19
        Houston - Seattle | Fri, Sep 11 | Frontier Airlines
        SEA 14:37
        8h 18m
        1 stop
        IAH 00:55
        Seattle - Houston | Mon, Sep 14 | Frontier Airlines
        S$ 335
        13% off
        S$ 385 S$ 335
      • IAH 20:53
        15h 46m
        1 stop
        SEA 10:39
        Houston - Seattle | Wed, Jul 29 | Frontier Airlines
        SEA 11:54
        9h 11m
        1 stop
        IAH 23:05
        Seattle - Houston | Wed, Aug 5 | Frontier Airlines
        S$ 335
        13% off
        S$ 385 S$ 335
      • HOU 13:00
        17h 25m
        1 stop
        SEA 14:00
        Houston - Seattle | Fri, Jul 24 | Normal Airline
        SEA 15:00
        6h
        Direct
        HOU 16:00
        Seattle - Houston | Sun, Jul 26 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        IAH 14:34
        4h 45m
        Direct
        SEA 17:19
        Houston - Seattle | Tue, Sep 1 | Alaska Airlines
        S$ 179 S$ 194
        8% off
        8% off
        S$ 194 S$ 179
      • IAH 14:34
        4h 45m
        Direct
        SEA 17:19
        Houston - Seattle | Sun, Sep 6 | Alaska Airlines
        S$ 180 S$ 194
        7% off
        7% off
        S$ 194 S$ 180
      • IAH 06:50
        19h 37m
        1 stop
        SEA 00:27
        Houston - Seattle | Wed, Sep 9 | Frontier Airlines
        S$ 81 S$ 194
        57% off
        57% off
        S$ 194 S$ 81
      • IAH 06:30
        7h 50m
        1 stop
        SEA 12:20
        Houston - Seattle | Mon, Aug 31 | Frontier Airlines
        S$ 81
        57% off
        S$ 194 S$ 81
      • IAH 06:50
        19h 37m
        1 stop
        SEA 00:27
        Houston - Seattle | Wed, Sep 16 | Frontier Airlines
        S$ 82
        57% off
        S$ 194 S$ 82
      • IAH 06:30
        28h 34m
        1 stop
        SEA 09:04
        Houston - Seattle | Tue, Aug 11 | Frontier Airlines
        S$ 84
        56% off
        S$ 194 S$ 84
      • IAH 06:50
        19h 37m
        1 stop
        SEA 00:27
        Houston - Seattle | Sat, Sep 12 | Frontier Airlines
        S$ 106
        45% off
        S$ 194 S$ 106
      • IAH 06:30
        28h 49m
        1 stop
        SEA 09:19
        Houston - Seattle | Mon, Aug 17 | Frontier Airlines
        S$ 130
        33% off
        S$ 194 S$ 130
      • IAH 06:30
        8h 52m
        1 stop
        SEA 13:22
        Houston - Seattle | Tue, Aug 18 | Frontier Airlines
        S$ 130
        33% off
        S$ 194 S$ 130
      • IAH 11:35
        27h 47m
        1 stop
        SEA 13:22
        Houston - Seattle | Sat, Sep 5 | Frontier Airlines
        S$ 136
        30% off
        S$ 194 S$ 136
      • IAH 06:50
        16h 18m
        1 stop
        SEA 21:08
        Houston - Seattle | Sat, Sep 19 | Frontier Airlines
        S$ 138
        28% off
        S$ 194 S$ 138
      • IAH 11:35
        11h 10m
        1 stop
        SEA 20:45
        Houston - Seattle | Sat, Aug 22 | Frontier Airlines
        S$ 142
        27% off
        S$ 194 S$ 142
      • HOU 13:00
        17h 25m
        1 stop
        SEA 14:00
        Houston - Seattle | Fri, Jul 24 | Normal Airline
        Find more flights
        Find more flights

Popular airlines from Houston to Seattle

You can choose from 1 airlines that fly from Houston to Seattle, including Alaska Airlines, Alaska Airlines offers the lowest prices on this route.
Alaska Airlines logo Alaska Airlines
Airlines are determined based on actual purchased flight tickets from Houston to Seattle according to previous 12 months data from Trip.com.

Flying from Houston to Seattle

The distance between Houston and Seattle is approximately 3,043.14km. It takes around 4 hours 55 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 S$ 81
Cheapest return ticket price S$ 219
Off-season for travel November
Peak season for travel July
Flight distance 3,043.14km
Average flight time 4 hours 55 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.

What is the cheapest month for 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 S$ 229, and the most expensive month is February, with an average price of up to S$ 497.

S$ 497
S$ 363
S$ 229
S$ 95
    Cheapest
  • S$ 328
    Jul
  • S$ 317
    Aug
  • S$ 370
    Sep
  • S$ 281
    Oct
  • S$ 229
    Nov
  • S$ 405
    Dec
  • S$ 259
    Jan
  • S$ 497
    Feb
  • S$ 331
    Mar
  • S$ 330
    Apr
  • S$ 337
    May
  • S$ 405
    Jun

What is the cheapest day to fly from Houston to Seattle during National Day?

Based on Trip.com's data over the past 3 days, these are the lowest one-way airfares from Houston to Seattle during National Day.

National Day is scheduled on Aug 9. The flights from Houston to Seattle are cheapest on Aug 10, with the lowest fare of S$ 181.

S$ 248
S$ 215
S$ 181
S$ 148
    Cheapest
  • S$ 223
    5
    Aug
  • S$ 208
    6
  • S$ 248
    7
  • S$ 214
    8
  • S$ 208
    9
  • S$ 181
    10
  • S$ 190
    11

Frequently Asked Questions

  • Which airlines offer the cheapest flights from Houston (HOU) to Seattle (SEA)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as S$ 81 on Cheapest nonstop routes (e.g. IAH to SEA on Wed, Sep 9), while Frontier Airlines offers Cheapest nonstop round-trips from S$ 219 departing on Tue, Sep 1 and returning on Sun, Sep 6.
  • At the moment, you can catch a direct 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.
  • It takes about 4 hours 55 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 56 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 (08:16)
  • 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 S$ 81.
    · 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 S$ 165.
  • 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 cancelled 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.

Find Cheap Flights & Deals on Trip.com

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

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are shown before payment. Charges for checked baggage, meals, Wi-Fi, and other optional services may also appear in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours, and with many routes refreshed in real time. The more popular the route, the more accurate the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.