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Cheap flights from San Antonio to Seattle from $95

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from San Antonio to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
10:11 pm - 12:37 pmSAT  San Antonio-SEA Seattle/Tacoma Intl
16h 26m1 stop Las Vegas Harry Reid Intl
Frontier Logo
4:58 pm - 7:56 pmSEA  Seattle/Tacoma Intl-SAT San Antonio
24h 58m1 stop Denver Intl
$274Frontier
Mon, Nov 23 - Wed, Dec 2
Southwest Logo
6:15 pm - 10:50 pmSAT  San Antonio-SEA Seattle/Tacoma Intl
6h 35m1 stop Denver Intl
Southwest Logo
11:35 am - 9:30 pmSEA  Seattle/Tacoma Intl-SAT San Antonio
7h 55m2 stops Sacramento Intl Phoenix Sky Harbor Intl
$274Southwest
Mon, Dec 7 - Wed, Dec 9
Frontier Logo
11:56 am - 5:18 pmSAT  San Antonio-SEA Seattle/Tacoma Intl
7h 22m1 stop Las Vegas Harry Reid Intl
Frontier Logo
6:33 pm - 11:01 amSEA  Seattle/Tacoma Intl-SAT San Antonio
14h 28m1 stop Las Vegas Harry Reid Intl
$276Frontier
Fri, Jan 15 - Thu, Jan 21
Delta Logo
6:01 pm - 12:23 amSAT  San Antonio-SEA Seattle/Tacoma Intl
8h 22m1 stop Salt Lake City
Delta Logo
2:40 pm - 11:44 pmSEA  Seattle/Tacoma Intl-SAT San Antonio
7h 04m1 stop Los Angeles
$277Delta
Mon, Jan 11 - Fri, Jan 22
Delta Logo
7:00 am - 2:30 pmSAT  San Antonio-SEA Seattle/Tacoma Intl
9h 30m1 stop Los Angeles
Delta Logo
11:12 pm - 11:43 amSEA  Seattle/Tacoma Intl-SAT San Antonio
10h 31m1 stop Detroit Metropolitan Wayne County
$277Delta
Mon, Jan 11 - Tue, Jan 19
United Airlines Logo
2:15 pm - 7:24 pmSAT  San Antonio-SEA Seattle/Tacoma Intl
7h 09m1 stop Houston George Bush Intcntl
United Airlines Logo
11:59 pm - 8:54 amSEA  Seattle/Tacoma Intl-SAT San Antonio
6h 55m1 stop Houston George Bush Intcntl
$277United Airlines
Tue, Mar 23 - Fri, Mar 26
American Airlines Logo
5:26 pm - 10:35 pmSAT  San Antonio-SEA Seattle/Tacoma Intl
7h 09m1 stop Dallas/Fort Worth
American Airlines Logo
7:20 am - 3:36 pmSEA  Seattle/Tacoma Intl-SAT San Antonio
6h 16m1 stop Dallas/Fort Worth
$277American Airlines
Mon, Feb 1 - Sat, Feb 6
American Airlines Logo
5:00 am - 11:30 amSAT  San Antonio-SEA Seattle/Tacoma Intl
8h 30m1 stop Dallas/Fort Worth
American Airlines Logo
1:13 pm - 10:59 pmSEA  Seattle/Tacoma Intl-SAT San Antonio
7h 46m1 stop Los Angeles
$277American Airlines
Thu, Jan 21 - Mon, Jan 25
Southwest Logo
6:05 am - 10:45 amSAT  San Antonio-SEA Seattle/Tacoma Intl
6h 40m1 stop Dallas Love Field
Southwest Logo
5:40 am - 2:15 pmSEA  Seattle/Tacoma Intl-SAT San Antonio
6h 35m1 stop Phoenix Sky Harbor Intl
$277Southwest
Thu, Jan 21 - Mon, Jan 25
United Airlines Logo
9:35 am - 6:12 pmSAT  San Antonio-SEA Seattle/Tacoma Intl
10h 37m2 stops Houston George Bush Intcntl Denver Intl
United Airlines Logo
5:00 am - 12:58 pmSEA  Seattle/Tacoma Intl-SAT San Antonio
5h 58m1 stop Denver Intl
$282United Airlines
Tue, Jan 12 - Wed, Jan 20

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United Airlines flights from San Antonio to Seattle

Our best United Airlines deals on San Antonio to Seattle flight tickets
United Airlines
Dec 1
SAT4:57 pmSan Antonio
6h 24m
1 stop
SEA9:21 pmSeattle/Tacoma Intl
Dec 4
SEA11:59 pmSeattle/Tacoma Intl
8h 52m
1 stop
SAT10:51 amSan Antonio
$298
United Airlines
May 1
SAT4:20 pmSan Antonio
8h 39m
2 stops
SEA10:59 pmSeattle/Tacoma Intl
May 10
SEA3:30 pmSeattle/Tacoma Intl
6h 34m
1 stop
SAT12:04 amSan Antonio
$314
United Airlines
Nov 12
SAT5:30 amSan Antonio
11h 09m
2 stops
SEA2:39 pmSeattle/Tacoma Intl
Nov 15
SEA11:59 pmSeattle/Tacoma Intl
6h 30m
1 stop
SAT8:29 amSan Antonio
$402

Frontier flights from San Antonio to Seattle

Our best Frontier deals on San Antonio to Seattle flight tickets
Frontier
Nov 23
SAT10:11 pmSan Antonio
16h 26m
1 stop
SEA12:37 pmSeattle/Tacoma Intl
Dec 2
SEA4:58 pmSeattle/Tacoma Intl
24h 58m
1 stop
SAT7:56 pmSan Antonio
$274
Frontier
Jan 31
SAT11:56 amSan Antonio
7h 22m
1 stop
SEA5:18 pmSeattle/Tacoma Intl
Feb 10
SEA4:29 pmSeattle/Tacoma Intl
24h 58m
1 stop
SAT7:27 pmSan Antonio
$276
Frontier
Nov 19
SAT10:29 pmSan Antonio
16h 08m
1 stop
SEA12:37 pmSeattle/Tacoma Intl
Nov 22
SEA9:53 pmSeattle/Tacoma Intl
21h 23m
1 stop
SAT9:16 pmSan Antonio
$283

momondo Fare Finder

 
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

Cheapest round-trip

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Mon 11/23

10:11 pm-12:37 pm

1 stop16h 26m

Seattle/Tacoma Intl

Wed 12/2

4:58 pm-7:56 pm

1 stop24h 58m

$274

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Mon 12/7

6:15 pm-10:50 pm

1 stop6h 35m

Seattle/Tacoma Intl

Wed 12/9

11:35 am-9:30 pm

2 stops7h 55m

$274

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Fri 1/15

11:56 am-5:18 pm

1 stop7h 22m

Seattle/Tacoma Intl

Thu 1/21

6:33 pm-11:01 am

1 stop14h 28m

$276

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Mon 1/11

6:01 pm-12:23 am

1 stop8h 22m

Seattle/Tacoma Intl

Fri 1/22

2:40 pm-11:44 pm

1 stop7h 04m

$277

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Mon 1/11

7:00 am-2:30 pm

1 stop9h 30m

Seattle/Tacoma Intl

Tue 1/19

11:12 pm-11:43 am

1 stop10h 31m

$277

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Tue 3/23

2:15 pm-7:24 pm

1 stop7h 09m

Seattle/Tacoma Intl

Fri 3/26

11:59 pm-8:54 am

1 stop6h 55m

$277

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Mon 2/1

5:26 pm-10:35 pm

1 stop7h 09m

Seattle/Tacoma Intl

Sat 2/6

7:20 am-3:36 pm

1 stop6h 16m

$277

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Thu 1/21

5:00 am-11:30 am

1 stop8h 30m

Seattle/Tacoma Intl

Mon 1/25

1:13 pm-10:59 pm

1 stop7h 46m

$277
Quickest round-trip

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Thu 1/21

6:05 am-10:45 am

1 stop6h 40m

Seattle/Tacoma Intl

Mon 1/25

5:40 am-2:15 pm

1 stop6h 35m

$277

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Tue 1/12

9:35 am-6:12 pm

2 stops10h 37m

Seattle/Tacoma Intl

Wed 1/20

5:00 am-12:58 pm

1 stop5h 58m

$282

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 typical price of a round-trip flight between San Antonio and Seattle?

Prices are currently low for flights on this route.

Typical prices usually range from $314 to $562.
The lowest price recently found on this route was $274.

What is the cheapest month to fly to Seattle?

In general, April 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 $286. If you don’t want to visit Seattle in April, then you should wait until February 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 Thursday. momondo users have found tickets for Thursday departures for as low as $515. 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 $577.

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

Flying to Seattle from San Antonio in the morning is the least expensive time of day to depart. momondo users have found prices as low as $507 when looking at flights departing in the morning. Flights to Seattle are more costly in the evening, with an average ticket price of $691. Departure times in the evening 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 from San Antonio 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 $356 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 $311 on momondo.

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

There are 4 cabin classes available to choose from on San Antonio to Seattle 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 November 2026, prices for San Antonio to Seattle flights are approximately 46% more expensive 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

$95

Fastest flight time

4h 25m

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 $95. The best round-trip flight deal from San Antonio to Seattle found on momondo in the last 72 hours is $274.
The fastest flight from San Antonio to Seattle takes 4h 25m
Direct flights go from San Antonio to Seattle every day.
There is 1 airport in Seattle. From San Antonio there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

Frequently asked questions about flying from San Antonio to Seattle

  • 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 25m.

  • 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
FrontierPriceFrom $80Free CancellationRating
5.5
2,510 reviews
Search Frontier flights
DeltaPriceFrom $178Free CancellationRating
7.8
8,697 reviews
Search Delta flights
American AirlinesPriceFrom $196Free CancellationRating
7.0
12,215 reviews
Search American Airlines flights
SouthwestPriceFrom $216Free CancellationRating
8.0
4,220 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $229Free CancellationRating
7.9
13,137 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $237Free CancellationRating
7.3
10,463 reviews
Search United Airlines flights

  • Alaska Airlines Flights From San Antonio to Seattle

    Alaska Airlines operates around 1 flight from San Antonio to Seattle every week. The average price of these flights found in the last 72 hours has been $453, but momondo users have found Alaska Airlines deals from San Antonio to Seattle from as low as $229 round-trip. Alaska Airlines has been scored 7.9/10 in 13,136 reviews.

Traveling to a place near Seattle?

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

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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