Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Antonio to Seattle from $63

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 3/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from San Antonio to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
1:13 pm - 6:29 pm
SAT
-
SEA
7h 16m1 stop
Delta Logo
1:30 pm - 11:29 pm
SEA
-
SAT
7h 59m1 stop
$183Delta
Wed, Mar 4 - Mon, Mar 9
Frontier Logo
8:24 pm - 11:19 am
SAT
-
SEA
16h 55m1 stop
Frontier Logo
9:25 pm - 9:04 pm
SEA
-
SAT
21h 39m1 stop
$185Frontier
Thu, Jan 29 - Thu, Feb 5
Frontier Logo
6:12 pm - 12:01 pm
SAT
-
SEA
19h 49m1 stop
Frontier Logo
12:24 pm - 9:06 am
SEA
-
SAT
18h 42m1 stop
$187Frontier
Wed, Mar 4 - Sun, Mar 8
Frontier Logo
12:31 pm - 9:36 am
SAT
-
SEA
23h 05m2 stops
Frontier Logo
9:25 pm - 12:25 pm
SEA
-
SAT
13h 00m1 stop
$189Frontier
Thu, Jan 29 - Thu, Feb 5
Delta Logo
6:20 pm - 12:09 am
SAT
-
SEA
7h 49m1 stop
Delta Logo
2:02 pm - 11:43 pm
SEA
-
SAT
7h 41m1 stop
$191Delta
Thu, Jan 22 - Sun, Jan 25
Frontier Logo
1:15 pm - 11:56 am
SAT
-
SEA
24h 41m1 stop
Frontier Logo
9:25 pm - 9:04 pm
SEA
-
SAT
21h 39m1 stop
$196Frontier
Sun, Jan 25 - Thu, Jan 29
American Airlines Logo
2:49 pm - 8:53 pm
SAT
-
SEA
8h 04m1 stop
American Airlines Logo
11:57 pm - 9:29 am
SEA
-
SAT
7h 32m1 stop
$197American Airlines
Sat, Feb 14 - Tue, Feb 17
Delta Logo
6:20 pm - 12:09 am
SAT
-
SEA
7h 49m1 stop
Delta Logo
2:02 pm - 11:43 pm
SEA
-
SAT
7h 41m1 stop
$199Delta
Fri, Jan 23 - Sun, Jan 25
United Airlines Logo
5:59 pm - 10:59 pm
SAT
-
SEA
7h 00m1 stop
United Airlines Logo
12:25 pm - 8:44 pm
SEA
-
SAT
6h 19m1 stop
$201United Airlines
Thu, Jan 15 - Wed, Jan 21
Delta Logo
5:59 pm - 12:09 am
SAT
-
SEA
8h 10m1 stop
Delta Logo
4:55 pm - 12:16 am
SEA
-
SAT
5h 21m1 stop
$206Delta
Fri, Mar 6 - Tue, Mar 10

Delta flights from San Antonio to Seattle

Our best Delta deals on San Antonio to Seattle flight tickets
Delta
Jan 8
SAT1:40 pmSan Antonio
11h 10m
1 stop
SEA10:50 pmSeattle/Tacoma Intl
Jan 12
SEA11:25 amSeattle/Tacoma Intl
8h 03m
1 stop
SAT9:28 pmSan Antonio
$183
Find similar
Delta
Jan 22
SAT6:20 pmSan Antonio
7h 49m
1 stop
SEA12:09 amSeattle/Tacoma Intl
Jan 25
SEA2:02 pmSeattle/Tacoma Intl
7h 41m
1 stop
SAT11:43 pmSan Antonio
$191
Find similar
Delta
Jan 23
SAT6:20 pmSan Antonio
7h 49m
1 stop
SEA12:09 amSeattle/Tacoma Intl
Jan 25
SEA2:02 pmSeattle/Tacoma Intl
7h 41m
1 stop
SAT11:43 pmSan Antonio
$199
Find similar

United Airlines flights from San Antonio to Seattle

Our best United Airlines deals on San Antonio to Seattle flight tickets
United Airlines
Jan 15
SAT5:59 pmSan Antonio
7h 00m
1 stop
SEA10:59 pmSeattle/Tacoma Intl
Jan 21
SEA12:25 pmSeattle/Tacoma Intl
6h 19m
1 stop
SAT8:44 pmSan Antonio
$201
Find similar
United Airlines
Jan 15
SAT5:59 pmSan Antonio
7h 00m
1 stop
SEA10:59 pmSeattle/Tacoma Intl
Jan 21
SEA8:40 amSeattle/Tacoma Intl
10h 41m
2 stops
SAT9:21 pmSan Antonio
$206
Find similar
United Airlines
Jan 31
SAT2:15 pmSan Antonio
9h 00m
2 stops
SEA9:15 pmSeattle/Tacoma Intl
Feb 7
SEA12:25 pmSeattle/Tacoma Intl
8h 32m
2 stops
SAT10:57 pmSan Antonio
$212
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 2, 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

Wed 3/4

1:13 pm-6:29 pm

1 stop7h 16m

Seattle/Tacoma Intl

Mon 3/9

1:30 pm-11:29 pm

1 stop7h 59m

$183

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 1/29

8:24 pm-11:19 am

1 stop16h 55m

Seattle/Tacoma Intl

Thu 2/5

9:25 pm-9:04 pm

1 stop21h 39m

$185

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Wed 3/4

6:12 pm-12:01 pm

1 stop19h 49m

Seattle/Tacoma Intl

Sun 3/8

12:24 pm-9:06 am

1 stop18h 42m

$187

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 1/29

12:31 pm-9:36 am

2 stops23h 05m

Seattle/Tacoma Intl

Thu 2/5

9:25 pm-12:25 pm

1 stop13h 00m

$189

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 1/22

6:20 pm-12:09 am

1 stop7h 49m

Seattle/Tacoma Intl

Sun 1/25

2:02 pm-11:43 pm

1 stop7h 41m

$191

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Sun 1/25

1:15 pm-11:56 am

1 stop24h 41m

Seattle/Tacoma Intl

Thu 1/29

9:25 pm-9:04 pm

1 stop21h 39m

$196

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Sat 2/14

2:49 pm-8:53 pm

1 stop8h 04m

Seattle/Tacoma Intl

Tue 2/17

11:57 pm-9:29 am

1 stop7h 32m

$197

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Fri 1/23

6:20 pm-12:09 am

1 stop7h 49m

Seattle/Tacoma Intl

Sun 1/25

2:02 pm-11:43 pm

1 stop7h 41m

$199

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 1/15

5:59 pm-10:59 pm

1 stop7h 00m

Seattle/Tacoma Intl

Wed 1/21

12:25 pm-8:44 pm

1 stop6h 19m

$201

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Fri 3/6

5:59 pm-12:09 am

1 stop8h 10m

Seattle/Tacoma Intl

Tue 3/10

4:55 pm-12:16 am

1 stop5h 21m

$206

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $257. 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 $266.

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 $451. 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 morning is the least expensive time of day to depart. momondo users have found prices as low as $477 when looking at flights departing in the morning. Flights to Seattle are more costly in the evening, with an average ticket price of $557. 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 $320 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 $271 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 5% 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

$218

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 $218. The best round-trip flight deal from San Antonio to Seattle found on momondo in the last 72 hours is $430.
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

  • 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
Spirit AirlinesPriceFrom $87Free CancellationRating
6.3
8,257 reviews
Search Spirit Airlines flights
FrontierPriceFrom $101Free CancellationRating
5.7
3,065 reviews
Search Frontier flights
DeltaPriceFrom $178Free CancellationRating
7.9
8,023 reviews
Search Delta flights
SouthwestPriceFrom $194Free CancellationRating
8.0
4,255 reviews
Search Southwest flights
American AirlinesPriceFrom $194Free CancellationRating
7.2
11,075 reviews
Search American Airlines flights
United AirlinesPriceFrom $214Free CancellationRating
7.4
9,129 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $234Free CancellationRating
8.0
11,607 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $237Free CancellationRating
7.8
2,823 reviews
Search Hawaiian Airlines flights

  • Alaska Airlines Flights From San Antonio to Seattle

    Alaska Airlines operates around 6 flights from San Antonio to Seattle every week. The average price of these flights found in the last 72 hours has been $397, but momondo users have found Alaska Airlines deals from San Antonio to Seattle from as low as $234 round-trip. Alaska Airlines has been scored 8.0/10 in 11,607 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 2,823 user reviews) flies into Seattle from San Antonio 8 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
Centralia
Fife
Westport
Kirkland
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.

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 2/1
Sun 2/8
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States