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

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

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

As of September 2026, 8 flights take off from San Antonio and land in Seattle each week. The most common flight departure day for this route is Sun, with 38% of weekly flights taking off on this day.

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

1 flights are operational daily from San Antonio to Seattle as of September 2026. The most popular departure time for this route is 17:00, with 100% of flights per day taking off in the afternoon.

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 590 Cheap Flights from San Antonio to Seattle in 2026/27

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.

5:55 - 10:25SAT San Antonio-SEA Seattle/Tacoma Intl

6h 30m1 stop Dallas Love Field

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

5h 35m1 stop Dallas Love Field

R5 081Southwest

Wed, Jan 6 - Thu, Jan 14

5:25 - 15:03SAT San Antonio-SEA Seattle/Tacoma Intl

11h 38m1 stop Detroit Metropolitan Wayne County

15:21 - 0:05SEA Seattle/Tacoma Intl-SAT San Antonio

6h 44m1 stop Los Angeles

R5 163Delta

Fri, Dec 4 - Tue, Dec 8

5:55 - 13:30SAT San Antonio-SEA Seattle/Tacoma Intl

9h 35m2 stops Dallas Love Field Las Vegas Harry Reid Intl

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

5h 35m1 stop Dallas Love Field

R5 180Southwest

Tue, Jan 12 - Wed, Jan 20

12:50 - 20:05SAT San Antonio-SEA Seattle/Tacoma Intl

9h 15m1 stop Phoenix Sky Harbor Intl

6:15 - 15:50SEA Seattle/Tacoma Intl-SAT San Antonio

7h 35m2 stops Denver Intl Houston Hobby

R5 245Southwest

Sat, Oct 24 - Wed, Oct 28

18:30 - 23:55SAT San Antonio-SEA Seattle/Tacoma Intl

7h 25m2 stops El Paso Phoenix Sky Harbor Intl

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

8h 45m2 stops Chicago Midway Kansas City

R5 327Southwest

Tue, Oct 27 - Mon, Nov 2

20:00 - 1:00SAT San Antonio-SEA Seattle/Tacoma Intl

7h 00m1 stop Phoenix Sky Harbor Intl

11:20 - 22:20SEA Seattle/Tacoma Intl-SAT San Antonio

9h 00m2 stops Long Beach Municipal Las Vegas Harry Reid Intl

R5 409Southwest

Sun, Nov 8 - Thu, Nov 12

11:45 - 22:35SAT San Antonio-SEA Seattle/Tacoma Intl

12h 50m2 stops Denver Intl Oakland

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

8h 10m2 stops Sacramento Intl Dallas Love Field

R5 426Southwest

Fri, Oct 23 - Tue, Oct 27

16:48 - 21:19SAT San Antonio-SEA Seattle/Tacoma Intl

6h 31m1 stop Denver Intl

23:59 - 10:46SEA Seattle/Tacoma Intl-SAT San Antonio

8h 47m1 stop Houston George Bush Intcntl

R5 458United Airlines

Mon, Nov 16 - Fri, Nov 20

5:50 - 10:35SAT San Antonio-SEA Seattle/Tacoma Intl

6h 45m1 stop Dallas Love Field

11:05 - 21:25SEA Seattle/Tacoma Intl-SAT San Antonio

8h 20m2 stops Oakland Phoenix Sky Harbor Intl

R5 475Southwest

Mon, Dec 7 - Tue, Dec 8

18:08 - 0:05SAT San Antonio-SEA Seattle/Tacoma Intl

7h 57m1 stop Salt Lake City

15:21 - 0:05SEA Seattle/Tacoma Intl-SAT San Antonio

6h 44m1 stop Los Angeles

R5 491Delta

Fri, Dec 11 - Wed, Dec 16

Cheap last-minute flights

Enter your travel dates to find the best prices.

6:00 - 12:58SAT San Antonio-SEA Seattle/Tacoma Intl

8h 58m1 stop Minneapolis St Paul

23:59 - 9:43SEA Seattle/Tacoma Intl-SAT San Antonio

7h 44m1 stop Atlanta Hartsfield-Jackson

R6 999Delta

Sun, Oct 4 - Sat, Oct 10

7:45 - 12:05SAT San Antonio-SEA Seattle/Tacoma Intl

6h 20m1 stop Phoenix Sky Harbor Intl

5:15 - 15:35SEA Seattle/Tacoma Intl-SAT San Antonio

8h 20m2 stops Sacramento Intl Las Vegas Harry Reid Intl

R7 327Southwest

Wed, Sep 30 - Thu, Dec 24

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

8h 50m2 stops Houston Hobby Denver Intl

5:15 - 15:35SEA Seattle/Tacoma Intl-SAT San Antonio

8h 20m2 stops Sacramento Intl Las Vegas Harry Reid Intl

R7 409Southwest

Wed, Sep 30 - Thu, Dec 24

14:25 - 19:03SAT San Antonio-SEA Seattle/Tacoma Intl

6h 38m1 stop Houston George Bush Intcntl

13:19 - 21:59SEA Seattle/Tacoma Intl-SAT San Antonio

6h 40m1 stop San Francisco

R7 573United Airlines

Sat, Oct 3 - Wed, Oct 7

20:35 - 1:20SAT San Antonio-SEA Seattle/Tacoma Intl

6h 45m1 stop Las Vegas Harry Reid Intl

12:00 - 22:50SEA Seattle/Tacoma Intl-SAT San Antonio

8h 50m1 stop Phoenix Sky Harbor Intl

R7 655Southwest

Thu, Oct 1 - Sat, Oct 3

12:55 - 20:25SAT San Antonio-SEA Seattle/Tacoma Intl

9h 30m2 stops Las Vegas Harry Reid Intl Sacramento Intl

12:45 - 23:45SEA Seattle/Tacoma Intl-SAT San Antonio

9h 00m1 stop Las Vegas Harry Reid Intl

R7 737Southwest

Sat, Oct 3 - Tue, Oct 6

12:55 - 20:00SAT San Antonio-SEA Seattle/Tacoma Intl

9h 05m2 stops Las Vegas Harry Reid Intl San Diego

8:45 - 21:40SEA Seattle/Tacoma Intl-SAT San Antonio

10h 55m2 stops Oakland Las Vegas Harry Reid Intl

R7 819Southwest

Sat, Oct 3 - Wed, Oct 7

12:55 - 20:25SAT San Antonio-SEA Seattle/Tacoma Intl

9h 30m2 stops Las Vegas Harry Reid Intl Sacramento Intl

21:15 - 10:05SEA Seattle/Tacoma Intl-SAT San Antonio

10h 50m1 stop Denver Intl

R7 835Southwest

Sat, Oct 3 - Sun, Oct 4

18:01 - 23:59SAT San Antonio-SEA Seattle/Tacoma Intl

7h 58m1 stop Salt Lake City

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

7h 43m1 stop Los Angeles

R8 081Delta

Sun, Oct 4 - Sun, Oct 11

7:45 - 12:23SAT San Antonio-SEA Seattle/Tacoma Intl

6h 38m1 stop San Francisco

13:19 - 21:59SEA Seattle/Tacoma Intl-SAT San Antonio

6h 40m1 stop San Francisco

R8 179United Airlines

Wed, Sep 30 - Thu, Oct 8

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Southwest flights from San Antonio to Seattle

Our best Southwest deals on San Antonio to Seattle flight tickets

Southwest

Jan 6

SAT5:55San Antonio

6h 30m

1 stop

SEA10:25Seattle/Tacoma Intl

Jan 14

SEA12:35Seattle/Tacoma Intl

5h 35m

1 stop

SAT20:10San Antonio

R5 081

Southwest

Jan 12

SAT5:55San Antonio

9h 35m

2 stops

SEA13:30Seattle/Tacoma Intl

Jan 20

SEA12:35Seattle/Tacoma Intl

5h 35m

1 stop

SAT20:10San Antonio

R5 180

Southwest

Oct 24

SAT12:50San Antonio

9h 15m

1 stop

SEA20:05Seattle/Tacoma Intl

Oct 28

SEA6:15Seattle/Tacoma Intl

7h 35m

2 stops

SAT15:50San Antonio

R5 245

Delta flights from San Antonio to Seattle

Our best Delta deals on San Antonio to Seattle flight tickets

Delta

Dec 4

SAT5:25San Antonio

11h 38m

1 stop

SEA15:03Seattle/Tacoma Intl

Dec 8

SEA15:21Seattle/Tacoma Intl

6h 44m

1 stop

SAT0:05San Antonio

R5 163

Delta

Dec 11

SAT18:08San Antonio

7h 57m

1 stop

SEA0:05Seattle/Tacoma Intl

Dec 16

SEA15:21Seattle/Tacoma Intl

6h 44m

1 stop

SAT0:05San Antonio

R5 491

Delta

Nov 24

SAT18:30San Antonio

7h 27m

1 stop

SEA23:57Seattle/Tacoma Intl

Nov 30

SEA15:13Seattle/Tacoma Intl

6h 50m

1 stop

SAT0:03San Antonio

R5 819

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

Wed 6/1

5:55-10:25

1 stop6h 30m

Seattle/Tacoma Intl

Thu 14/1

12:35-20:10

1 stop5h 35m

R5 081

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Fri 4/12

5:25-15:03

1 stop11h 38m

Seattle/Tacoma Intl

Tue 8/12

15:21-0:05

1 stop6h 44m

R5 163

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Tue 12/1

5:55-13:30

2 stops9h 35m

Seattle/Tacoma Intl

Wed 20/1

12:35-20:10

1 stop5h 35m

R5 180

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Sat 24/10

12:50-20:05

1 stop9h 15m

Seattle/Tacoma Intl

Wed 28/10

6:15-15:50

2 stops7h 35m

R5 245

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Tue 27/10

18:30-23:55

2 stops7h 25m

Seattle/Tacoma Intl

Mon 2/11

5:30-16:15

2 stops8h 45m

R5 327

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Sun 8/11

20:00-1:00

1 stop7h 00m

Seattle/Tacoma Intl

Thu 12/11

11:20-22:20

2 stops9h 00m

R5 409

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Fri 23/10

11:45-22:35

2 stops12h 50m

Seattle/Tacoma Intl

Tue 27/10

12:05-22:15

2 stops8h 10m

R5 426

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Mon 16/11

16:48-21:19

1 stop6h 31m

Seattle/Tacoma Intl

Fri 20/11

23:59-10:46

1 stop8h 47m

R5 458

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Mon 7/12

5:50-10:35

1 stop6h 45m

Seattle/Tacoma Intl

Tue 8/12

11:05-21:25

2 stops8h 20m

R5 475

San AntonioSeattle

SAT San Antonio - SEA Seattle/Tacoma Intl

SATSEA

San Antonio

Fri 11/12

18:08-0:05

1 stop7h 57m

Seattle/Tacoma Intl

Wed 16/12

15:21-0:05

1 stop6h 44m

R5 491

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 032 to R6 180.
The lowest price recently found on this route was R5 081.

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 524, 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 February is also cheap. Prices for this month can be found on momondo for an average of R4 540.

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 523 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 819 on momondo.

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 590
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 590. The best return flight deal from San Antonio to Seattle found on momondo in the last 72 hours is R5 081.

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 15,56% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 15,56%, Boeing 737 with 11,11%, and Airbus A220-300 with 11,11%.

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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.