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Flights from San Antonio to Seattle

Find cheap airlines flights from San Antonio to Seattle

You can choose from 3 airlines that fly from San Antonio to Seattle, including Delta Air Lines, Alaska Airlines, and American Airlines. Hawaiian Airlines has lowest fares on this route.
Delta Air Lines logo Delta Air Lines
Alaska Airlines logo Alaska Airlines
American Airlines logo American Airlines
Airlines are determined based on actual purchased flight tickets from San Antonio to Seattle according to previous 12 months data from Trip.com.

Book direct flights from San Antonio to Seattle: One way flights from $135, round trip flights from $222. Find flight deals for the next 3 months below.

      • Cheapest nonstop
        SAT 5:50 PM
        4h 36m
        Nonstop
        SEA 8:26 PM
        San Antonio - Seattle | Tue, Mar 24 | Hawaiian Airlines
        SEA 10:53 AM
        4h 1m
        Nonstop
        SAT 4:54 PM
        Seattle - San Antonio | Sat, Mar 28 | Hawaiian Airlines
        $222 $260
        15% off
        15% off
        $260 $222
      • SAT 5:50 PM
        4h 36m
        Nonstop
        SEA 8:26 PM
        San Antonio - Seattle | Tue, Mar 24 | Alaska Airlines
        SEA 10:53 AM
        4h 1m
        Nonstop
        SAT 4:54 PM
        Seattle - San Antonio | Sat, Mar 28 | Alaska Airlines
        $226 $260
        13% off
        13% off
        $260 $226
      • SAT 6:45 AM
        7h 45m
        1 stop
        SEA 12:30 PM
        San Antonio - Seattle | Sat, Apr 4 | Frontier Airlines
        SEA 2:54 PM
        7h 23m
        1 stop
        SAT 12:17 AM
        Seattle - San Antonio | Thu, Apr 9 | Frontier Airlines
        $160 $260
        38% off
        38% off
        $260 $160
      • SAT 5:55 PM
        6h 8m
        1 stop
        SEA 10:03 PM
        San Antonio - Seattle | Sat, May 9 | Delta Air Lines
        SEA 9:10 AM
        10h 22m
        1 stop
        SAT 9:32 PM
        Seattle - San Antonio | Tue, May 12 | Delta Air Lines
        $164
        37% off
        $260 $164
      • SAT 4:10 PM
        9h 13m
        1 stop
        SEA 11:23 PM
        San Antonio - Seattle | Fri, Apr 3 | Delta Air Lines
        SEA 1:30 PM
        8h 46m
        1 stop
        SAT 12:16 AM
        Seattle - San Antonio | Wed, Apr 8 | Delta Air Lines
        $164
        37% off
        $260 $164
      • SAT 6:05 PM
        7h 54m
        1 stop
        SEA 11:59 PM
        San Antonio - Seattle | Wed, May 6 | Delta Air Lines
        SEA 5:30 AM
        6h 45m
        1 stop
        SAT 2:15 PM
        Seattle - San Antonio | Sat, May 9 | Delta Air Lines
        $164
        37% off
        $260 $164
      • SAT 6:05 PM
        7h 54m
        1 stop
        SEA 11:59 PM
        San Antonio - Seattle | Mon, Apr 20 | Delta Air Lines
        SEA 1:45 PM
        7h 51m
        1 stop
        SAT 11:36 PM
        Seattle - San Antonio | Wed, Apr 22 | Delta Air Lines
        $171
        34% off
        $260 $171
      • SAT 7:35 AM
        9h 6m
        1 stop
        SEA 2:41 PM
        San Antonio - Seattle | Tue, Apr 7 | Delta Air Lines
        SEA 4:36 PM
        5h 49m
        1 stop
        SAT 12:25 AM
        Seattle - San Antonio | Tue, Apr 14 | Delta Air Lines
        $172
        34% off
        $260 $172
      • SAT 4:47 PM
        8h 8m
        1 stop
        SEA 10:55 PM
        San Antonio - Seattle | Fri, May 8 | Delta Air Lines
        SEA 7:30 AM
        8h 53m
        1 stop
        SAT 6:23 PM
        Seattle - San Antonio | Tue, May 12 | Delta Air Lines
        $172
        34% off
        $260 $172
      • SAT 6:12 PM
        7h 42m
        1 stop
        SEA 11:54 PM
        San Antonio - Seattle | Thu, Apr 16 | Delta Air Lines
        SEA 1:45 PM
        7h 51m
        1 stop
        SAT 11:36 PM
        Seattle - San Antonio | Fri, Apr 24 | Delta Air Lines
        $173
        33% off
        $260 $173
      • SAT 4:10 PM
        9h 13m
        1 stop
        SEA 11:23 PM
        San Antonio - Seattle | Wed, Mar 25 | Delta Air Lines
        SEA 9:25 AM
        5h 40m
        1 stop
        SAT 5:05 PM
        Seattle - San Antonio | Wed, Apr 1 | Delta Air Lines
        $181
        30% off
        $260 $181
      • SAT 7:35 AM
        7h 14m
        1 stop
        SEA 12:49 PM
        San Antonio - Seattle | Wed, Apr 8 | Delta Air Lines
        SEA 5:35 AM
        6h 3m
        1 stop
        SAT 1:38 PM
        Seattle - San Antonio | Wed, Apr 15 | Delta Air Lines
        $182
        30% off
        $260 $182
      • SAT 1:00 PM
        17h 25m
        1 stop
        SEA Invalid Date
        San Antonio - Seattle | Tue, Mar 17 | Normal Airline
        SEA 3:00 PM
        6h
        Nonstop
        SAT 4:00 PM
        Seattle - San Antonio | Thu, Mar 19 | Normal Airline
        Find more flights
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      • Cheapest nonstop
        SAT 6:06 PM
        4h 37m
        Nonstop
        SEA 8:43 PM
        San Antonio - Seattle | Tue, Mar 17 | Hawaiian Airlines
        $135 $159
        15% off
        15% off
        $159 $135
      • SAT 6:06 PM
        4h 37m
        Nonstop
        SEA 8:43 PM
        San Antonio - Seattle | Tue, Mar 17 | Alaska Airlines
        $138 $159
        13% off
        13% off
        $159 $138
      • SAT 3:00 PM
        20h 27m
        1 stop
        SEA 9:27 AM
        San Antonio - Seattle | Fri, May 1 | Frontier Airlines
        $86 $159
        46% off
        46% off
        $159 $86
      • SAT 7:54 PM
        14h 9m
        1 stop
        SEA 8:03 AM
        San Antonio - Seattle | Mon, May 11 | Frontier Airlines
        $102
        36% off
        $159 $102
      • SAT 6:14 PM
        8h 37m
        1 stop
        SEA 12:51 AM
        San Antonio - Seattle | Tue, May 5 | American Airlines
        $102
        36% off
        $159 $102
      • SAT 5:55 PM
        8h 8m
        1 stop
        SEA 12:03 AM
        San Antonio - Seattle | Sun, Mar 22 | Delta Air Lines
        $102
        36% off
        $159 $102
      • SAT 7:45 AM
        16h 7m
        1 stop
        SEA 9:52 PM
        San Antonio - Seattle | Tue, Apr 7 | Frontier Airlines
        $103
        35% off
        $159 $103
      • SAT 1:37 PM
        10h 28m
        1 stop
        SEA 10:05 PM
        San Antonio - Seattle | Fri, Apr 3 | Delta Air Lines
        $104
        35% off
        $159 $104
      • SAT 7:35 AM
        7h 14m
        1 stop
        SEA 12:49 PM
        San Antonio - Seattle | Thu, Apr 2 | Delta Air Lines
        $104
        35% off
        $159 $104
      • SAT 6:45 AM
        28h 42m
        1 stop
        SEA 9:27 AM
        San Antonio - Seattle | Mon, Apr 13 | Frontier Airlines
        $107
        33% off
        $159 $107
      • SAT 7:00 AM
        7h 27m
        1 stop
        SEA 12:27 PM
        San Antonio - Seattle | Tue, Mar 17 | Delta Air Lines
        $108
        32% off
        $159 $108
      • SAT 6:12 PM
        7h 42m
        1 stop
        SEA 11:54 PM
        San Antonio - Seattle | Fri, Apr 24 | Delta Air Lines
        $108
        32% off
        $159 $108
      • SAT 1:00 PM
        17h 25m
        1 stop
        SEA Invalid Date
        San Antonio - Seattle | Tue, Mar 17 | Normal Airline
        Find more flights
        Find more flights

Displayed flight fares from San Antonio to Seattle are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | San Antonio to Seattle

The distance between San Antonio and Seattle is approximately 2,853.97 km. It takes around 4 hours 32 minutes on average to fly from San Antonio 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$86
Cheapest round-trip ticket price$160
Off-season for travelNovember
Peak season for travelJuly
Flight distance2,853.97 km
Average flight time4 hours 32 minutes
Popular airlineDelta Air Lines
Flight statistics for the San Antonio–Seattle route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com price insights on flights from San Antonio to Seattle

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

The average price of one-way flights from San Antonio 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 San Antonio to Seattle is August, with an average price of $135; while the month with the highest flight price is usually July, with an average price of up to $305.

$305
$220
$135
$50
    Cheapest
  • $144
    Mar
  • $153
    Apr
  • $251
    May
  • $195
    Jun
  • $305
    Jul
  • $135
    Aug
  • $167
    Sep
  • $264
    Oct
  • $147
    Nov
  • $303
    Dec
  • $213
    Jan
  • $173
    Feb

What's the cheapest day to fly from San Antonio to Seattle?

Data is based on the average flight price for each day of the week from San Antonio to Seattle on Trip.com over the past 12 months.

Based on Trip.com data from the past 12 months, the cheapest day to fly from San Antonio to Seattle is Saturday, with average prices lower than on other days. Avoid Thursday, as prices are usually highest then.

$235
$194
$153
$112
    Cheapest
  • $194
    Mon
  • $162
    Tue
  • $177
    Wed
  • $235
    Thu
  • $223
    Fri
  • $153
    Sat
  • $211
    Sun

Frequently Asked Questions

  • What are the cheapest flights from San Antonio to Seattle (SAT-SEA)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as $86 on Cheapest nonstop routes (e.g. SAT to SEA on Fri, May 1), while Frontier Airlines offers Cheapest nonstop round-trips from $160 departing on Sat, Apr 4 and returning on Thu, Apr 9.
  • At the moment, you can catch a nonstop flight from San Antonio 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 around 4 hours 32 minutes to fly from San Antonio (SAT) 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 San Antonio 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 6 flight per week flying from San Antonio to Seattle. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS494 (20:50)
  • To find best deals on flights from San Antonio 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 Fri, May 1, with one-way flights priced at just $86.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Hawaiian 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 San Antonio to Seattle is November, when demand for travel is lower.
  • After crunching the numbers on our March flight calendar, it's currently cheapest to fly from San Antonio to Seattle on March 25, 2026 with Delta Air Lines, with prices starting at $181.
  • You can land at any one of the following hubs in Seattle, with San Antonio International Airport to Seattle-Tacoma International Airport (SAT-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 - Lake Union (LKE).
  • The time difference between Seattle and San Antonio 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.

Trip.com airline insights on flights from San Antonio to Seattle

Which airlines offer the cheapest nonstop flights from San Antonio to Seattle?

Data is based on the average price of all nonstop flights from San Antonio to Seattle on Trip.com in the past 12 months.

Based on Trip.com data from the past 12 months, Frontier Airlines offers the cheapest nonstop flights from San Antonio to Seattle, with an average price of $147.

$106
$147
$189
$231
$272
Frontier Airlines
$147
Frontier Airlines
American Airlines
$179
American Airlines
Delta Air Lines
$200
Delta Air Lines
Alaska Airlines
$262
Alaska Airlines
Hawaiian Airlines
$272
Hawaiian Airlines

Which airlines operate the most flights from San Antonio to Seattle?

Data is based on the number of flights from San Antonio to Seattle operated by each airline on Trip.com in the past month.

Based on Trip.com data from the past month, Alaska Airlines/Hawaiian Airlines/Air Tahiti Nui operates the most flights from San Antonio to Seattle, with 8 flight per week.

8
Alaska Airlines
8
Alaska Airlines
Hawaiian Airlines
8
Hawaiian Airlines
Air Tahiti Nui
8
Air Tahiti Nui

How many flights are there each day from San Antonio to Seattle?

Data is based on the number of flights from San Antonio to Seattle for each day of the week on Trip.com over the last month.

Based on Trip.com data from the past month, the most flights from San Antonio to Seattle depart on Friday/Saturday/Sunday, and the fewest flights depart on Monday/Tuesday/Wednesday/Thursday.

15
14
12
11
Highest
12
Mon
12
Tue
12
Wed
12
Thu
15
Fri
15
Sat
15
Sun

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.