How many flights depart from San Antonio to Seattle on average per week?

As of September 2026, 5 flights take off from San Antonio and land in Seattle each week. The most common flight departure day for this route is Sat, with 40% of weekly flights taking off on this day.

What is the cheapest airline that flies from San Antonio to Seattle/Tacoma Intl?

United Airlines, Southwest, and Delta are the most popular carriers operating from San Antonio to Seattle/Tacoma Intl

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 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 stopovers. 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 travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

R2 215 Cheap Flights from San Antonio to Seattle in 2026

Find the cheapest flights from San Antonio to Seattle

Return

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

20:00 - 0:55SAT San Antonio-SEA Seattle/Tacoma Intl

6h 55m1 stop Phoenix Sky Harbor Intl

12:35 - 20:10SEA Seattle/Tacoma Intl-SAT San Antonio

5h 35m1 stop Dallas Love Field

R4 335Southwest

Thu, Nov 12 - Wed, Jan 6

18:13 - 0:06SAT San Antonio-SEA Seattle/Tacoma Intl

7h 53m1 stop Salt Lake City

23:59 - 12:40SEA Seattle/Tacoma Intl-SAT San Antonio

10h 41m1 stop Atlanta Hartsfield-Jackson

R4 414Delta

Fri, Dec 4 - Tue, Dec 8

16:20 - 23:10SAT San Antonio-SEA Seattle/Tacoma Intl

8h 50m2 stops Houston Hobby Denver Intl

22:30 - 11:00SEA Seattle/Tacoma Intl-SAT San Antonio

10h 30m1 stop Baltimore/Washington

R4 494Southwest

Tue, Sep 22 - Tue, Sep 29

12:50 - 20:30SAT San Antonio-SEA Seattle/Tacoma Intl

9h 40m2 stops Phoenix Sky Harbor Intl Sacramento Intl

5:30 - 16:15SEA Seattle/Tacoma Intl-SAT San Antonio

8h 45m2 stops Chicago Midway Kansas City

R4 574Southwest

Sat, Oct 24 - Mon, Nov 2

15:55 - 22:45SAT San Antonio-SEA Seattle/Tacoma Intl

8h 50m2 stops Los Angeles Los Angeles San Jose

20:40 - 11:05SEA Seattle/Tacoma Intl-SAT San Antonio

12h 25m1 stop Las Vegas Harry Reid Intl

R4 590Southwest

Mon, Oct 5 - Mon, Oct 12

17:05 - 22:09SAT San Antonio-SEA Seattle/Tacoma Intl

7h 04m1 stop Los Angeles Los Angeles

15:21 - 0:06SEA Seattle/Tacoma Intl-SAT San Antonio

6h 45m1 stop Los Angeles Los Angeles

R4 733Delta

Fri, Dec 11 - Wed, Dec 16

16:50 - 22:59SAT San Antonio-SEA Seattle/Tacoma Intl

8h 09m1 stop Denver Intl

23:59 - 8:38SEA Seattle/Tacoma Intl-SAT San Antonio

6h 39m1 stop Houston George Bush Intcntl

R4 765United Airlines

Mon, Oct 5 - Sun, Oct 11

6:40 - 13:35SAT San Antonio-SEA Seattle/Tacoma Intl

8h 55m2 stops Phoenix Sky Harbor Intl Sacramento Intl

7:50 - 17:45SEA Seattle/Tacoma Intl-SAT San Antonio

7h 55m1 stop San Diego

R4 829Southwest

Wed, Oct 14 - Sat, Oct 17

17:58 - 22:45SAT San Antonio-SEA Seattle/Tacoma Intl

6h 47m1 stop Houston George Bush Intcntl

12:43 - 22:51SEA Seattle/Tacoma Intl-SAT San Antonio

8h 08m2 stops Denver Intl Houston George Bush Intcntl

R4 861United Airlines

Mon, Oct 19 - Sat, Oct 24

16:40 - 0:40SAT San Antonio-SEA Seattle/Tacoma Intl

10h 00m2 stops Nashville Intl Chicago Midway

12:05 - 22:15SEA Seattle/Tacoma Intl-SAT San Antonio

8h 10m2 stops Sacramento Intl Dallas Love Field

R4 908Southwest

Mon, Oct 5 - Wed, Oct 7

Cheap last-minute flights

Enter your travel dates to find the best prices.

7:20 - 14:53SAT San Antonio-SEA Seattle/Tacoma Intl

9h 33m1 stop Los Angeles Los Angeles

14:30 - 0:13SEA Seattle/Tacoma Intl-SAT San Antonio

7h 43m1 stop Los Angeles Los Angeles

R4 893Delta

Thu, Sep 10 - Thu, Sep 17

7:35 - 12:48SAT San Antonio-SEA Seattle/Tacoma Intl

7h 13m1 stop Houston George Bush Intcntl

13:10 - 21:59SEA Seattle/Tacoma Intl-SAT San Antonio

6h 49m1 stop San Francisco

R5 291United Airlines

Fri, Sep 11 - Tue, Sep 15

5:30 - 12:07SAT San Antonio-SEA Seattle/Tacoma Intl

8h 37m1 stop Atlanta Hartsfield-Jackson

5:45 - 13:40SEA Seattle/Tacoma Intl-SAT San Antonio

5h 55m1 stop Salt Lake City

R5 371Delta

Thu, Sep 10 - Wed, Sep 16

12:40 - 21:15SAT San Antonio-SEA Seattle/Tacoma Intl

10h 35m2 stops Las Vegas Harry Reid Intl Oakland

6:40 - 17:25SEA Seattle/Tacoma Intl-SAT San Antonio

8h 45m1 stop Denver Intl

R5 450Southwest

Fri, Sep 11 - Tue, Sep 15

7:20 - 14:53SAT San Antonio-SEA Seattle/Tacoma Intl

9h 33m1 stop Los Angeles Los Angeles

14:30 - 0:13SEA Seattle/Tacoma Intl-SAT San Antonio

7h 43m1 stop Los Angeles Los Angeles

R5 689Delta

Thu, Sep 10 - Sun, Sep 13

7:20 - 14:53SAT San Antonio-SEA Seattle/Tacoma Intl

9h 33m1 stop Los Angeles Los Angeles

14:30 - 0:13SEA Seattle/Tacoma Intl-SAT San Antonio

7h 43m1 stop Los Angeles Los Angeles

R5 705Delta

Thu, Sep 10 - Sun, Sep 13

12:40 - 21:15SAT San Antonio-SEA Seattle/Tacoma Intl

10h 35m2 stops Las Vegas Harry Reid Intl Oakland

23:00 - 10:20SEA Seattle/Tacoma Intl-SAT San Antonio

9h 20m1 stop Nashville Intl

R5 785Southwest

Fri, Sep 11 - Mon, Sep 14

12:40 - 21:15SAT San Antonio-SEA Seattle/Tacoma Intl

10h 35m2 stops Las Vegas Harry Reid Intl Oakland

6:40 - 16:50SEA Seattle/Tacoma Intl-SAT San Antonio

8h 10m2 stops Denver Intl Dallas Love Field

R5 865Southwest

Fri, Sep 11 - Tue, Sep 15

5:30 - 12:48SAT San Antonio-SEA Seattle/Tacoma Intl

9h 18m1 stop Houston George Bush Intcntl

5:00 - 12:43SEA Seattle/Tacoma Intl-SAT San Antonio

5h 43m1 stop Denver Intl

R6 183United Airlines

Mon, Sep 7 - Sat, Sep 12

12:50 - 19:00SAT San Antonio-SEA Seattle/Tacoma Intl

8h 10m2 stops Las Vegas Harry Reid Intl San Jose

6:40 - 16:50SEA Seattle/Tacoma Intl-SAT San Antonio

8h 10m2 stops Denver Intl Dallas Love Field

R6 199Southwest

Sat, Sep 12 - Tue, Sep 15

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Southwest flights from San Antonio to Seattle

Our best Southwest deals on San Antonio to Seattle flight tickets

Southwest

Nov 12

SAT20:00San Antonio

6h 55m

1 stop

SEA0:55Seattle/Tacoma Intl

Jan 6

SEA12:35Seattle/Tacoma Intl

5h 35m

1 stop

SAT20:10San Antonio

R4 335

Southwest

Sept 18

SAT19:50San Antonio

6h 55m

1 stop

SEA0:45Seattle/Tacoma Intl

Sept 22

SEA22:30Seattle/Tacoma Intl

10h 30m

1 stop

SAT11:00San Antonio

R4 414

Southwest

Sept 22

SAT16:20San Antonio

8h 50m

2 stops

SEA23:10Seattle/Tacoma Intl

Sept 29

SEA22:30Seattle/Tacoma Intl

10h 30m

1 stop

SAT11:00San Antonio

R4 494

Delta flights from San Antonio to Seattle

Our best Delta deals on San Antonio to Seattle flight tickets

Delta

Dec 4

SAT18:13San Antonio

7h 53m

1 stop

SEA0:06Seattle/Tacoma Intl

Dec 8

SEA23:59Seattle/Tacoma Intl

10h 41m

1 stop

SAT12:40San Antonio

R4 414

Delta

Dec 11

SAT17:05San Antonio

7h 04m

1 stop

SEA22:09Seattle/Tacoma Intl

Dec 16

SEA15:21Seattle/Tacoma Intl

6h 45m

1 stop

SAT0:06San Antonio

R4 733

Delta

Sept 14

SAT16:50San Antonio

7h 15m

1 stop

SEA22:05Seattle/Tacoma Intl

Sept 18

SEA23:59Seattle/Tacoma Intl

9h 40m

1 stop

SAT11:39San Antonio

R4 893

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Thu 12/11

20:00-0:55

1 stop6h 55m

Seattle/Tacoma Intl

Wed 6/1

12:35-20:10

1 stop5h 35m

R4 335

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Fri 4/12

18:13-0:06

1 stop7h 53m

Seattle/Tacoma Intl

Tue 8/12

23:59-12:40

1 stop10h 41m

R4 414

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Tue 22/9

16:20-23:10

2 stops8h 50m

Seattle/Tacoma Intl

Tue 29/9

22:30-11:00

1 stop10h 30m

R4 494

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Sat 24/10

12:50-20:30

2 stops9h 40m

Seattle/Tacoma Intl

Mon 2/11

5:30-16:15

2 stops8h 45m

R4 574

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Mon 5/10

15:55-22:45

2 stops8h 50m

Seattle/Tacoma Intl

Mon 12/10

20:40-11:05

1 stop12h 25m

R4 590

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Fri 11/12

17:05-22:09

1 stop7h 04m

Seattle/Tacoma Intl

Wed 16/12

15:21-0:06

1 stop6h 45m

R4 733

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Mon 5/10

16:50-22:59

1 stop8h 09m

Seattle/Tacoma Intl

Sun 11/10

23:59-8:38

1 stop6h 39m

R4 765

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Wed 14/10

6:40-13:35

2 stops8h 55m

Seattle/Tacoma Intl

Sat 17/10

7:50-17:45

1 stop7h 55m

R4 829

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Mon 19/10

17:58-22:45

1 stop6h 47m

Seattle/Tacoma Intl

Sat 24/10

12:43-22:51

2 stops8h 08m

R4 861

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Mon 5/10

16:40-0:40

2 stops10h 00m

Seattle/Tacoma Intl

Wed 7/10

12:05-22:15

2 stops8h 10m

R4 908

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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

Prices are currently typical for flights on this route.

Typical prices usually range from R4 112 to R6 406.
The lowest price recently found on this route was R4 335.

What is the cheapest month to fly to Seattle?

The cheapest month to fly to Seattle from San Antonio is in October. Flight prices, which tend to average around R4 287, are often lower during this time because this is during the off-season. If you aren’t able to travel to Seattle during the month of October, then flying in April is also cheap. Prices for this month can be found on momondo for an average of R4 558.

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 R5 367 when searching weeks before you fly. 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 R4 606 on momondo.

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

There is only 1 cabin class 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 September 2026, prices for San Antonio to Seattle flights are approximately 2% 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 return 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	R2 215
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 R2 215. The best return flight deal from San Antonio to Seattle found on momondo in the last 72 hours is R4 335.

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?
San Antonio and Seattle/Tacoma Intl are 2872,8 km apart from one another.
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 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 stopovers. 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 travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from San Antonio to Seattle?
Based on momondo bookings for flights between San Antonio and Seattle, the leading plane model is Boeing 737-800, making up 15,09% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 13,21%, Boeing 737 MAX 8 with 11,32%, and Boeing 737 with 11,32%.

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Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Antonio to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from San Antonio to Seattle with flexible booking policies on momondo?

All flight searches from San Antonio to Seattle on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from San Antonio to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from San Antonio.

I’m not ready to book a flight from San Antonio to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for San Antonio to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.