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Cheap flights from San Antonio to Seattle from $69

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 8/30. 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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Find the cheapest flights from San Antonio to Seattle

Cheap round-trip flights

Frontier Logo
6:59 pm - 11:42 pmSAT-SEA
6h 43m1 stop
Frontier Logo
6:25 am - 2:35 pmSEA-SAT
6h 10m1 stop
$139Frontier
Find Deal
Sat, Aug 16 - Sat, Aug 23
Frontier Logo
8:20 pm - 12:30 amSAT-SEA
6h 10m1 stop
Frontier Logo
6:12 am - 7:15 pmSEA-SAT
11h 03m1 stop
$150Frontier
Find Deal
Fri, Sep 5 - Fri, Sep 12
Southwest Logo
6:15 am - 10:25 amSAT-SEA
6h 10m1 stop
Southwest Logo
3:05 pm - 11:15 pmSEA-SAT
6h 10m1 stop
$195Southwest
Find Deal
Mon, Aug 18 - Mon, Aug 25
Southwest Logo
7:10 pm - 12:15 amSAT-SEA
7h 05m1 stop
Southwest Logo
5:00 am - 1:50 pmSEA-SAT
6h 50m2 stops
$200Southwest
Find Deal
Mon, Aug 18 - Fri, Aug 22
Delta Logo
12:41 pm - 6:56 pmSAT-SEA
8h 15m1 stop
Delta Logo
12:15 pm - 11:54 pmSEA-SAT
9h 39m1 stop
$217Delta
Find Deal
Wed, Aug 13 - Sat, Aug 23
American Airlines Logo
5:00 am - 9:19 amSAT-SEA
6h 19m1 stop
American Airlines Logo
6:30 am - 4:58 pmSEA-SAT
8h 28m1 stop
$224American Airlines
Find Deal
Sat, Aug 2 - Wed, Aug 6
United Airlines Logo
2:14 pm - 7:25 pmSAT-SEA
7h 11m1 stop
United Airlines Logo
5:05 am - 12:56 pmSEA-SAT
5h 51m1 stop
$235United Airlines
Find Deal
Wed, Nov 19 - Sat, Nov 22
Delta Logo
6:07 pm - 12:06 amSAT-SEA
7h 59m1 stop
Delta Logo
12:15 pm - 11:54 pmSEA-SAT
9h 39m1 stop
$237Delta
Find Deal
Fri, Aug 15 - Mon, Aug 18
American Airlines Logo
6:12 pm - 12:43 amSAT-SEA
8h 31m1 stop
American Airlines Logo
12:59 am - 9:13 amSEA-SAT
6h 14m1 stop
$246American Airlines
Find Deal
Sun, Jul 27 - Thu, Jul 31
United Airlines Logo
4:21 pm - 10:59 pmSAT-SEA
8h 38m2 stops
United Airlines Logo
5:02 am - 12:48 pmSEA-SAT
5h 46m1 stop
$268United Airlines
Find Deal
Sat, Aug 16 - Sat, Aug 23

Southwest flights from San Antonio to Seattle

Our best Southwest deals on San Antonio to Seattle flight tickets
Southwest
Aug 18
SAT6:15 amSan Antonio
6h 10m
1 stop
SEA10:25 amSeattle/Tacoma Intl
Aug 25
SEA3:05 pmSeattle/Tacoma Intl
6h 10m
1 stop
SAT11:15 pmSan Antonio
Southwest
Aug 18
SAT7:10 pmSan Antonio
7h 05m
1 stop
SEA12:15 amSeattle/Tacoma Intl
Aug 22
SEA5:00 amSeattle/Tacoma Intl
6h 50m
2 stops
SAT1:50 pmSan Antonio
Southwest
Aug 20
SAT5:00 pmSan Antonio
9h 05m
2 stops
SEA12:05 amSeattle/Tacoma Intl
Aug 27
SEA6:45 amSeattle/Tacoma Intl
8h 25m
2 stops
SAT5:10 pmSan Antonio

Delta flights from San Antonio to Seattle

Our best Delta deals on San Antonio to Seattle flight tickets
Delta
Aug 13
SAT12:41 pmSan Antonio
8h 15m
1 stop
SEA6:56 pmSeattle/Tacoma Intl
Aug 23
SEA12:15 pmSeattle/Tacoma Intl
9h 39m
1 stop
SAT11:54 pmSan Antonio
Delta
Aug 15
SAT6:07 pmSan Antonio
7h 59m
1 stop
SEA12:06 amSeattle/Tacoma Intl
Aug 18
SEA12:15 pmSeattle/Tacoma Intl
9h 39m
1 stop
SAT11:54 pmSan Antonio
Delta
Dec 1
SAT4:10 pmSan Antonio
9h 14m
1 stop
SEA11:24 pmSeattle/Tacoma Intl
Dec 4
SEA12:00 pmSeattle/Tacoma Intl
9h 21m
1 stop
SAT11:21 pmSan Antonio

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, 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 September to fly from San Antonio, when ticket prices are also cheap, with an average price of $294.

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 $433. 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 $585.

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 $421 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 $340 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 $285 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 July 2025, prices for San Antonio to Seattle flights are approximately 18% 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

$69

Fastest flight time

4h 16m

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 $69. The best round-trip flight deal from San Antonio to Seattle found on momondo in the last 72 hours is $139.
The fastest flight from San Antonio to Seattle takes 4h 16m
Direct flights go from San Antonio to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • 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 16m.

  • 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
8,094 reviews
Search Spirit Airlines flights
FrontierPriceFrom $101Free CancellationRating
5.9
3,284 reviews
Search Frontier flights
DeltaPriceFrom $178Free CancellationRating
8.0
7,983 reviews
Search Delta flights
American AirlinesPriceFrom $192Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $216Free CancellationRating
7.4
8,861 reviews
Search United Airlines flights
SouthwestPriceFrom $216Free CancellationRating
8.0
4,270 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $236Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $237Free CancellationRating
7.8
2,545 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 $416, but momondo users have found Alaska Airlines deals from San Antonio to Seattle from as low as $236 round-trip. Alaska Airlines has been scored 8.0/10 in 10,000 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 2,545 user reviews) flies into Seattle from San Antonio 7 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
Federal Way
Kent
Lynnwood
Puyallup
Tukwila
Kirkland
Marysville
Lakewood
Fife
Shoreline
Centralia
Cle Elum
Westport
Redmond

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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1 adult
Tue 7/8
Tue 7/15

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