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Cheap flights from San Antonio to Seattle from $65

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 3/5. 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

Enter your travel dates to find the best prices.
American Airlines Logo
3:08 pm - 9:15 pm
SAT
-
SEA
8h 07m1 stop
American Airlines Logo
11:57 pm - 8:23 am
SEA
-
SAT
6h 26m1 stop
$178American Airlines
Sat, Feb 14 - Wed, Feb 18
Frontier Logo
6:45 am - 5:09 pm
SAT
-
SEA
36h 24m2 stops
Frontier Logo
9:35 pm - 10:40 am
SEA
-
SAT
11h 05m1 stop
$185Frontier
Mon, Mar 9 - Sun, Mar 15
American Airlines Logo
8:16 am - 1:04 pm
SAT
-
SEA
6h 48m1 stop
American Airlines Logo
6:00 am - 3:45 pm
SEA
-
SAT
7h 45m1 stop
$187American Airlines
Wed, Jan 28 - Sun, Feb 1
Alaska Airlines Logo
6:46 pm - 9:22 pm
SAT
-
SEA
4h 36mnonstop
Alaska Airlines Logo
11:40 am - 5:45 pm
SEA
-
SAT
4h 05mnonstop
$196Alaska Airlines
Tue, Feb 3 - Tue, Feb 10
Alaska Airlines Logo
6:46 pm - 9:22 pm
SAT
-
SEA
4h 36mnonstop
Alaska Airlines Logo
11:40 am - 5:45 pm
SEA
-
SAT
4h 05mnonstop
$197Alaska Airlines
Wed, Jan 28 - Wed, Feb 4
American Airlines Logo
5:00 am - 11:01 am
SAT
-
SEA
8h 01m1 stop
American Airlines Logo
2:29 pm - 11:09 pm
SEA
-
SAT
6h 40m1 stop
$198American Airlines
Mon, Jan 26 - Fri, Jan 30
Southwest Logo
6:15 pm - 11:05 pm
SAT
-
SEA
6h 50m1 stop
Southwest Logo
5:15 am - 4:30 pm
SEA
-
SAT
9h 15m2 stops
$202Southwest
Wed, Jan 28 - Wed, Feb 4
Frontier Logo
11:35 am - 8:08 pm
SAT
-
SEA
10h 33m1 stop
Frontier Logo
6:30 pm - 5:15 pm
SEA
-
SAT
20h 45m2 stops
$204Frontier
Sun, Feb 15 - Tue, Feb 17
Delta Logo
4:10 pm - 11:23 pm
SAT
-
SEA
9h 13m1 stop
Delta Logo
1:30 pm - 11:29 pm
SEA
-
SAT
7h 59m1 stop
$206Delta
Sun, Mar 15 - Thu, Mar 19
Frontier Logo
8:24 pm - 11:19 am
SAT
-
SEA
16h 55m1 stop
Frontier Logo
10:51 am - 9:04 pm
SEA
-
SAT
8h 13m1 stop
$209Frontier
Sun, Feb 1 - Fri, Feb 6

American Airlines flights from San Antonio to Seattle

Our best American Airlines deals on San Antonio to Seattle flight tickets
American Airlines
Feb 14
SAT3:08 pmSan Antonio
8h 07m
1 stop
SEA9:15 pmSeattle/Tacoma Intl
Feb 18
SEA11:57 pmSeattle/Tacoma Intl
6h 26m
1 stop
SAT8:23 amSan Antonio
$178
Find similar
American Airlines
Jan 28
SAT8:16 amSan Antonio
6h 48m
1 stop
SEA1:04 pmSeattle/Tacoma Intl
Feb 1
SEA6:00 amSeattle/Tacoma Intl
7h 45m
1 stop
SAT3:45 pmSan Antonio
$187
Find similar
American Airlines
Jan 26
SAT5:00 amSan Antonio
8h 01m
1 stop
SEA11:01 amSeattle/Tacoma Intl
Jan 30
SEA2:29 pmSeattle/Tacoma Intl
6h 40m
1 stop
SAT11:09 pmSan Antonio
$198
Find similar

Alaska Airlines flights from San Antonio to Seattle

Our best Alaska Airlines deals on San Antonio to Seattle flight tickets
Alaska Airlines
Feb 3
SAT6:46 pmSan Antonio
4h 36m
SEA9:22 pmSeattle/Tacoma Intl
Feb 10
SEA11:40 amSeattle/Tacoma Intl
4h 05m
SAT5:45 pmSan Antonio
$196
Find similar
Alaska Airlines
Jan 28
SAT6:46 pmSan Antonio
4h 36m
SEA9:22 pmSeattle/Tacoma Intl
Feb 4
SEA11:40 amSeattle/Tacoma Intl
4h 05m
SAT5:45 pmSan Antonio
$197
Find similar
Alaska Airlines
Feb 20
SAT6:06 pmSan Antonio
4h 37m
SEA8:43 pmSeattle/Tacoma Intl
Feb 24
SEA11:09 amSeattle/Tacoma Intl
4h 01m
SAT5:10 pmSan Antonio
$217
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 January 7, 2026.
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

Sat 2/14

3:08 pm-9:15 pm

1 stop8h 07m

Seattle/Tacoma Intl

Wed 2/18

11:57 pm-8:23 am

1 stop6h 26m

$178

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Mon 3/9

6:45 am-5:09 pm

2 stops36h 24m

Seattle/Tacoma Intl

Sun 3/15

9:35 pm-10:40 am

1 stop11h 05m

$185

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Wed 1/28

8:16 am-1:04 pm

1 stop6h 48m

Seattle/Tacoma Intl

Sun 2/1

6:00 am-3:45 pm

1 stop7h 45m

$187

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Tue 2/3

6:46 pm-9:22 pm

Nonstop4h 36m

Seattle/Tacoma Intl

Tue 2/10

11:40 am-5:45 pm

Nonstop4h 05m

$196

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Wed 1/28

6:46 pm-9:22 pm

Nonstop4h 36m

Seattle/Tacoma Intl

Wed 2/4

11:40 am-5:45 pm

Nonstop4h 05m

$197

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Mon 1/26

5:00 am-11:01 am

1 stop8h 01m

Seattle/Tacoma Intl

Fri 1/30

2:29 pm-11:09 pm

1 stop6h 40m

$198

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Wed 1/28

6:15 pm-11:05 pm

1 stop6h 50m

Seattle/Tacoma Intl

Wed 2/4

5:15 am-4:30 pm

2 stops9h 15m

$202

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Sun 2/15

11:35 am-8:08 pm

1 stop10h 33m

Seattle/Tacoma Intl

Tue 2/17

6:30 pm-5:15 pm

2 stops20h 45m

$204

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Sun 3/15

4:10 pm-11:23 pm

1 stop9h 13m

Seattle/Tacoma Intl

Thu 3/19

1:30 pm-11:29 pm

1 stop7h 59m

$206

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Sun 2/1

8:24 pm-11:19 am

1 stop16h 55m

Seattle/Tacoma Intl

Fri 2/6

10:51 am-9:04 pm

1 stop8h 13m

$209

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, October 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 $265. If you don’t want to visit Seattle in October, then you should wait until September to fly from San Antonio, when ticket prices are also cheap, with an average price of $267.

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 $437. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday 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 morning is the least expensive time of day to depart. momondo users have found prices as low as $475 when looking at flights departing in the morning. Flights to Seattle are more costly in the evening, with an average ticket price of $559. 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 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 $318 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 $267 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 January 2026, prices for San Antonio to Seattle flights are approximately 38% 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

$218

Fastest flight time

4h 36m

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 $218. The best round-trip flight deal from San Antonio to Seattle found on momondo in the last 72 hours is $397.
The fastest flight from San Antonio to Seattle takes 4h 36m
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

  • 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 36m.

  • 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
8,285 reviews
Search Spirit Airlines flights
FrontierPriceFrom $101Free CancellationRating
5.7
3,063 reviews
Search Frontier flights
DeltaPriceFrom $178Free CancellationRating
7.9
8,022 reviews
Search Delta flights
SouthwestPriceFrom $194Free CancellationRating
8.0
4,249 reviews
Search Southwest flights
American AirlinesPriceFrom $194Free CancellationRating
7.2
11,091 reviews
Search American Airlines flights
United AirlinesPriceFrom $214Free CancellationRating
7.4
9,138 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $230Free CancellationRating
8.0
11,660 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $237Free CancellationRating
7.8
2,824 reviews
Search Hawaiian Airlines flights

  • Alaska Airlines Flights From San Antonio to Seattle

    Alaska Airlines operates around 2 flights from San Antonio to Seattle every week. The average price of these flights found in the last 72 hours has been $394, but momondo users have found Alaska Airlines deals from San Antonio to Seattle from as low as $230 round-trip. Alaska Airlines has been scored 8.0/10 in 11,660 reviews.

  • Hawaiian Airlines Flights From San Antonio to Seattle

    $237 is the best Hawaiian Airlines flight deal from San Antonio to Seattle found on momondo over the last 72 hours. The average Hawaiian Airlines ticket price found was closer to $377, however, with flight time and availability significantly affecting the price. Hawaiian Airlines (7.8/10 from 2,824 user reviews) flies into Seattle from San Antonio 2 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
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Redmond
Tukwila
Federal Way
Cle Elum
Lakewood
Fife
Westport
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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