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Cheap flights from San Antonio to Seattle from $77

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Seattle departing on 9/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Delta Logo
4:00 pm - 10:25 pmSAT-SEA
8h 25m1 stop
Delta Logo
2:30 pm - 11:17 pmSEA-SAT
6h 47m1 stop
$195Delta
Find Deal
Wed, Sep 17 - Sat, Sep 27
Frontier Logo
8:16 pm - 12:30 amSAT-SEA
6h 14m1 stop
Frontier Logo
6:12 am - 7:15 pmSEA-SAT
11h 03m1 stop
$200Frontier
Find Deal
Thu, Sep 11 - Thu, Sep 18
Southwest Logo
5:35 am - 10:10 amSAT-SEA
6h 35m1 stop
Southwest Logo
6:35 am - 9:50 pmSEA-SAT
13h 15m2 stops
$206Southwest
Find Deal
Fri, Nov 14 - Mon, Nov 17
Hawaiian Airlines Logo
7:57 pm - 10:27 pmSAT-SEA
4h 30mnonstop
Hawaiian Airlines Logo
5:59 pm - 12:04 amSEA-SAT
4h 05mnonstop
$216Hawaiian Airlines
Find Deal
Fri, Oct 3 - Fri, Oct 10
American Airlines Logo
12:44 pm - 7:09 pmSAT-SEA
8h 25m1 stop
American Airlines Logo
12:30 am - 9:19 amSEA-SAT
6h 49m1 stop
$217American Airlines
Find Deal
Sat, Sep 27 - Sun, Oct 5
United Airlines Logo
5:58 pm - 10:52 pmSAT-SEA
6h 54m1 stop
United Airlines Logo
11:11 am - 10:48 pmSEA-SAT
9h 37m2 stops
$222United Airlines
Find Deal
Wed, Sep 17 - Wed, Sep 24
Southwest Logo
3:50 pm - 9:45 pmSAT-SEA
7h 55m1 stop
Southwest Logo
6:30 am - 11:50 pmSEA-SAT
15h 20m2 stops
$228Southwest
Find Deal
Thu, Sep 11 - Thu, Sep 18
Hawaiian Airlines Logo
7:57 pm - 10:27 pmSAT-SEA
4h 30mnonstop
Hawaiian Airlines Logo
5:55 pm - 12:03 amSEA-SAT
4h 08mnonstop
$237Hawaiian Airlines
Find Deal
Thu, Sep 11 - Thu, Sep 18
United Airlines Logo
2:25 pm - 7:11 pmSAT-SEA
6h 46m1 stop
United Airlines Logo
11:10 am - 9:29 pmSEA-SAT
8h 19m2 stops
$252United Airlines
Find Deal
Mon, Sep 29 - Thu, Oct 2
American Airlines Logo
6:00 am - 10:44 amSAT-SEA
6h 44m1 stop
American Airlines Logo
12:59 am - 12:03 pmSEA-SAT
9h 04m1 stop
$266American Airlines
Find Deal
Wed, Nov 12 - Sat, Nov 15

Delta flights from San Antonio to Seattle

Our best Delta deals on San Antonio to Seattle flight tickets
Delta
Sep 17
SAT4:00 pmSan Antonio
8h 25m
1 stop
SEA10:25 pmSeattle/Tacoma Intl
Sep 27
SEA2:30 pmSeattle/Tacoma Intl
6h 47m
1 stop
SAT11:17 pmSan Antonio
$195
Find similar
Delta
Sep 2
SAT12:41 pmSan Antonio
5h 57m
1 stop
SEA4:38 pmSeattle/Tacoma Intl
Sep 11
SEA12:45 pmSeattle/Tacoma Intl
9h 07m
1 stop
SAT11:52 pmSan Antonio
$221
Find similar
Delta
Sep 25
SAT6:05 pmSan Antonio
7h 54m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
Sep 30
SEA6:00 amSeattle/Tacoma Intl
9h 15m
1 stop
SAT5:15 pmSan Antonio
$246
Find similar

Frontier flights from San Antonio to Seattle

Our best Frontier deals on San Antonio to Seattle flight tickets
Frontier
Sep 11
SAT8:16 pmSan Antonio
6h 14m
1 stop
SEA12:30 amSeattle/Tacoma Intl
Sep 18
SEA6:12 amSeattle/Tacoma Intl
11h 03m
1 stop
SAT7:15 pmSan Antonio
$200
Find similar
Frontier
Oct 2
SAT8:20 pmSan Antonio
6h 10m
1 stop
SEA12:30 amSeattle/Tacoma Intl
Oct 5
SEA1:22 pmSeattle/Tacoma Intl
21h 54m
1 stop
SAT1:16 pmSan Antonio
$201
Find similar
Frontier
Oct 3
SAT7:25 pmSan Antonio
7h 05m
1 stop
SEA12:30 amSeattle/Tacoma Intl
Oct 5
SEA1:22 pmSeattle/Tacoma Intl
21h 54m
1 stop
SAT1:16 pmSan Antonio
$207
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 21, 2025.
Use the filters below to find and compare flights from San Antonio to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Wed 9/17

4:00 pm-10:25 pm

1 stop8h 25m

Seattle/Tacoma Intl

Sat 9/27

2:30 pm-11:17 pm

1 stop6h 47m

$195

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 9/11

8:16 pm-12:30 am

1 stop6h 14m

Seattle/Tacoma Intl

Thu 9/18

6:12 am-7:15 pm

1 stop11h 03m

$200

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Fri 11/14

5:35 am-10:10 am

1 stop6h 35m

Seattle/Tacoma Intl

Mon 11/17

6:35 am-9:50 pm

2 stops13h 15m

$206

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Fri 10/3

7:57 pm-10:27 pm

Nonstop4h 30m

Seattle/Tacoma Intl

Fri 10/10

5:59 pm-12:04 am

Nonstop4h 05m

$216

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Sat 9/27

12:44 pm-7:09 pm

1 stop8h 25m

Seattle/Tacoma Intl

Sun 10/5

12:30 am-9:19 am

1 stop6h 49m

$217

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Wed 9/17

5:58 pm-10:52 pm

1 stop6h 54m

Seattle/Tacoma Intl

Wed 9/24

11:11 am-10:48 pm

2 stops9h 37m

$222

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 9/11

3:50 pm-9:45 pm

1 stop7h 55m

Seattle/Tacoma Intl

Thu 9/18

6:30 am-11:50 pm

2 stops15h 20m

$228

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 9/11

7:57 pm-10:27 pm

Nonstop4h 30m

Seattle/Tacoma Intl

Thu 9/18

5:55 pm-12:03 am

Nonstop4h 08m

$237

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Mon 9/29

2:25 pm-7:11 pm

1 stop6h 46m

Seattle/Tacoma Intl

Thu 10/2

11:10 am-9:29 pm

2 stops8h 19m

$252

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Wed 11/12

6:00 am-10:44 am

1 stop6h 44m

Seattle/Tacoma Intl

Sat 11/15

12:59 am-12:03 pm

1 stop9h 04m

$266

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from San Antonio to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from San Antonio to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $270. If you don’t want to visit Seattle in January, then you should wait until October to fly from San Antonio, when ticket prices are also cheap, with an average price of $287.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from San Antonio is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $459. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from San Antonio because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $592.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from San Antonio in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $503 when looking at flights departing in the afternoon. Flights to Seattle are more costly at noon, with an average ticket price of $621. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest San Antonio to Seattle/Tacoma Intl flight route?

Fly from San Antonio to Seattle/Tacoma Intl for the best San Antonio - Seattle/Tacoma Intl flight prices

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

You are more likely to see cheaper flights to Seattle from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $345 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from San Antonio for as low as $282 on momondo.

What cabin class options are available on San Antonio to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on San Antonio to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have San Antonio to Seattle flight prices changed over time?

As of August 2025, prices for San Antonio to Seattle flights are approximately 70% cheaper when compared to flights at the same time last year.

When to book flights from San Antonio to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Antonio to Seattle (SAT to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Seattle

Best Price Found

$166

Fastest flight time

4h 23m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from San Antonio in the past 72 hours is $166. The best round-trip flight deal from San Antonio to Seattle found on momondo in the last 72 hours is $342.
The fastest flight from San Antonio to Seattle takes 4h 23m
Direct flights go from San Antonio to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

  • How far is San Antonio to Seattle/Tacoma Intl by plane?

    A flight from San Antonio to Seattle/Tacoma Intl will travel around 1785.1 mi. By plane, this route typically takes 4h 28m.

  • When did momondo last update prices for flights from San Antonio Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from San Antonio Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How many operators does momondo search for flights from San Antonio Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from San Antonio Airport to Seattle/Tacoma Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from San Antonio to Seattle?

  • What is the most popular airline from San Antonio to Seattle?

Best airlines flying from San Antonio to Seattle

Compare and see reviews for airlines that fly from San Antonio to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $87Free CancellationRating
6.3
8,035 reviews
Search Spirit Airlines flights
FrontierPriceFrom $101Free CancellationRating
5.8
3,207 reviews
Search Frontier flights
DeltaPriceFrom $177Free CancellationRating
7.9
7,981 reviews
Search Delta flights
SouthwestPriceFrom $194Free CancellationRating
8.0
4,245 reviews
Search Southwest flights
American AirlinesPriceFrom $194Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $223Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $237Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $237Free CancellationRating
7.8
2,672 reviews
Search Hawaiian Airlines flights

  • Southwest Flights From San Antonio to Seattle

    Southwest operates around 3 flights from San Antonio to Seattle every week. The average price of these flights found in the last 72 hours has been $365, but momondo users have found Southwest deals from San Antonio to Seattle from as low as $194 round-trip. Southwest has been scored 8.0/10 in 4,245 reviews.

  • Alaska Airlines Flights From San Antonio to Seattle

    $237 is the best Alaska Airlines flight deal from San Antonio to Seattle found on momondo over the last 72 hours. The average Alaska Airlines ticket price found was closer to $426, however, with flight time and availability significantly affecting the price. Alaska Airlines (8.0/10 from 10,000 user reviews) flies into Seattle from San Antonio 5 times in an average week so prices can vary.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Olympia
Renton
Kent
Lynnwood
Federal Way
Marysville
Puyallup
Tukwila
Kirkland
Lakewood
Centralia
Cle Elum
Shoreline
Fife
Redmond
Westport

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Seattle?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from San Antonio.

Can I find flights from San Antonio to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from San Antonio which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from San Antonio to Seattle?

Once you have performed a search for San Antonio to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from San Antonio to Seattle right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of San Antonio to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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