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Cheap flights from San Antonio to Seattle from $68

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 11/15. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 pm - 10:46 pmSAT-SEA
6h 46m1 stop
United Airlines Logo
1:43 pm - 10:56 pmSEA-SAT
7h 13m1 stop
$201United Airlines
Find Deal
lun., nov. 10 - mar., nov. 11
Frontier Logo
8:43 pm - 12:13 pmSAT-SEA
17h 30m1 stop
Frontier Logo
1:08 pm - 7:30 pmSEA-SAT
28h 22m1 stop
$202Frontier
Find Deal
jue., oct. 30 - jue., nov. 6
Southwest Logo
6:25 pm - 10:55 pmSAT-SEA
6h 30m1 stop
Southwest Logo
5:15 am - 1:35 pmSEA-SAT
6h 20m1 stop
$206Southwest
Find Deal
mié., nov. 5 - lun., nov. 10
Southwest Logo
8:25 pm - 12:35 amSAT-SEA
6h 10m1 stop
Southwest Logo
6:35 am - 7:50 pmSEA-SAT
11h 15m1 stop
$211Southwest
Find Deal
dom., nov. 16 - lun., nov. 17
American Airlines Logo
8:21 pm - 12:58 amSAT-SEA
6h 37m1 stop
American Airlines Logo
11:59 pm - 8:24 amSEA-SAT
6h 25m1 stop
$215American Airlines
Find Deal
jue., nov. 6 - dom., nov. 9
Delta Logo
6:25 am - 12:58 pmSAT-SEA
8h 33m1 stop
Delta Logo
2:10 pm - 11:46 pmSEA-SAT
7h 36m1 stop
$217Delta
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vie., oct. 31 - mié., nov. 5
American Airlines Logo
5:00 am - 9:45 amSAT-SEA
6h 45m1 stop
American Airlines Logo
5:24 am - 3:36 pmSEA-SAT
8h 12m1 stop
$227American Airlines
Find Deal
vie., nov. 7 - lun., nov. 10
Delta Logo
7:05 am - 12:56 pmSAT-SEA
7h 51m1 stop
Delta Logo
6:00 am - 5:18 pmSEA-SAT
9h 18m1 stop
$228Delta
Find Deal
dom., nov. 16 - mié., nov. 19
Alaska Airlines Logo
6:32 am - 9:05 amSAT-SEA
4h 33mnonstop
Alaska Airlines Logo
11:45 am - 5:55 pmSEA-SAT
4h 10mnonstop
$235Alaska Airlines
Find Deal
sáb., nov. 15 - mar., nov. 18
Alaska Airlines Logo
6:32 am - 9:05 amSAT-SEA
4h 33mnonstop
Alaska Airlines Logo
11:45 am - 5:55 pmSEA-SAT
4h 10mnonstop
$237Alaska Airlines
Find Deal
jue., nov. 13 - sáb., nov. 15

United Airlines flights from San Antonio to Seattle

Our best United Airlines deals on San Antonio to Seattle flight tickets
United Airlines
Nov 10
SAT6:00 pmSan Antonio
6h 46m
1 stop
SEA10:46 pmSeattle/Tacoma Intl
Nov 11
SEA1:43 pmSeattle/Tacoma Intl
7h 13m
1 stop
SAT10:56 pmSan Antonio
$201
Find similar
United Airlines
Nov 15
SAT1:10 pmSan Antonio
9h 41m
2 stops
SEA8:51 pmSeattle/Tacoma Intl
Nov 18
SEA1:43 pmSeattle/Tacoma Intl
7h 13m
1 stop
SAT10:56 pmSan Antonio
$207
Find similar
United Airlines
Nov 4
SAT7:30 amSan Antonio
8h 08m
1 stop
SEA1:38 pmSeattle/Tacoma Intl
Nov 8
SEA1:43 pmSeattle/Tacoma Intl
7h 13m
1 stop
SAT10:56 pmSan Antonio
$243
Find similar

Southwest flights from San Antonio to Seattle

Our best Southwest deals on San Antonio to Seattle flight tickets
Southwest
Nov 5
SAT6:25 pmSan Antonio
6h 30m
1 stop
SEA10:55 pmSeattle/Tacoma Intl
Nov 10
SEA5:15 amSeattle/Tacoma Intl
6h 20m
1 stop
SAT1:35 pmSan Antonio
$206
Find similar
Southwest
Nov 16
SAT8:25 pmSan Antonio
6h 10m
1 stop
SEA12:35 amSeattle/Tacoma Intl
Nov 17
SEA6:35 amSeattle/Tacoma Intl
11h 15m
1 stop
SAT7:50 pmSan Antonio
$211
Find similar
Southwest
Nov 10
SAT8:25 pmSan Antonio
6h 10m
1 stop
SEA12:35 amSeattle/Tacoma Intl
Nov 11
SEA6:35 amSeattle/Tacoma Intl
13h 20m
2 stops
SAT9:55 pmSan Antonio
$226
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 octubre 16, 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

lun. 11/10

6:00 pm-10:46 pm

1 stop6h 46m

Seattle/Tacoma Intl

mar. 11/11

1:43 pm-10:56 pm

1 stop7h 13m

$201

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

jue. 10/30

8:43 pm-12:13 pm

1 stop17h 30m

Seattle/Tacoma Intl

jue. 11/6

1:08 pm-7:30 pm

1 stop28h 22m

$202

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

mié. 11/5

6:25 pm-10:55 pm

1 stop6h 30m

Seattle/Tacoma Intl

lun. 11/10

5:15 am-1:35 pm

1 stop6h 20m

$206

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

dom. 11/16

8:25 pm-12:35 am

1 stop6h 10m

Seattle/Tacoma Intl

lun. 11/17

6:35 am-7:50 pm

1 stop11h 15m

$211

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

jue. 11/6

8:21 pm-12:58 am

1 stop6h 37m

Seattle/Tacoma Intl

dom. 11/9

11:59 pm-8:24 am

1 stop6h 25m

$215

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

vie. 10/31

6:25 am-12:58 pm

1 stop8h 33m

Seattle/Tacoma Intl

mié. 11/5

2:10 pm-11:46 pm

1 stop7h 36m

$217

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

vie. 11/7

5:00 am-9:45 am

1 stop6h 45m

Seattle/Tacoma Intl

lun. 11/10

5:24 am-3:36 pm

1 stop8h 12m

$227

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

dom. 11/16

7:05 am-12:56 pm

1 stop7h 51m

Seattle/Tacoma Intl

mié. 11/19

6:00 am-5:18 pm

1 stop9h 18m

$228

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

sáb. 11/15

6:32 am-9:05 am

Nonstop4h 33m

Seattle/Tacoma Intl

mar. 11/18

11:45 am-5:55 pm

Nonstop4h 10m

$235

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

jue. 11/13

6:32 am-9:05 am

Nonstop4h 33m

Seattle/Tacoma Intl

sáb. 11/15

11:45 am-5:55 pm

Nonstop4h 10m

$237

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?

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 $257. 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 Wednesday. momondo users have found tickets for Wednesday departures for as low as $468. 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 $596.

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 $489 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the evening, with an average ticket price of $538. 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 $330 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 $273 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 October 2025, prices for San Antonio to Seattle flights are approximately 57% 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

$138

Fastest flight time

4h 27m

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 $138. The best round-trip flight deal from San Antonio to Seattle found on momondo in the last 72 hours is $288.
The fastest flight from San Antonio to Seattle takes 4h 27m
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 33m.

  • 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
8,099 reviews
Search Spirit Airlines flights
FrontierPriceFrom $101Free CancellationRating
5.8
3,137 reviews
Search Frontier flights
DeltaPriceFrom $178Free CancellationRating
7.9
7,980 reviews
Search Delta flights
SouthwestPriceFrom $194Free CancellationRating
8.0
4,241 reviews
Search Southwest flights
American AirlinesPriceFrom $194Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
United AirlinesPriceFrom $223Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $237Free CancellationRating
7.8
2,781 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $237Free CancellationRating
8.0
11,102 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From San Antonio to Seattle

    Alaska Airlines operates around 4 flights from San Antonio to Seattle every week. The average price of these flights found in the last 72 hours has been $420, but momondo users have found Alaska Airlines deals from San Antonio to Seattle from as low as $237 round-trip. Alaska Airlines has been scored 8.0/10 in 11,102 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 2,781 user reviews) flies into Seattle from San Antonio 9 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
Federal Way
Tukwila
Lakewood
Kirkland
Fife
Centralia
Shoreline
Cle Elum
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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