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Cheap flights from San Antonio to Washington 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 Washington departing on 1/10. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
4:40 pm - 10:24 pm
SAT
-
SEA
7h 44m1 stop
Delta Logo
11:10 pm - 11:26 am
SEA
-
SAT
10h 16m1 stop
$215Delta
Thu, Jan 8 - Tue, Jan 13
Alaska Airlines Logo
6:46 pm - 9:22 pm
SAT
-
SEA
4h 36mnonstop
Alaska Airlines Logo
11:40 am - 5:45 pm
SEA
-
SAT
4h 05mnonstop
$217Alaska Airlines
Thu, Jan 8 - Tue, Jan 13
Multiple Airlines Logo
11:55 am - 10:30 pm
SAT
-
SEA
12h 35m1 stop
Multiple Airlines Logo
11:40 am - 5:45 pm
SEA
-
SAT
4h 05mnonstop
$220Multiple Airlines
Thu, Jan 8 - Wed, Jan 14
Southwest Logo
5:30 pm - 12:30 am
SAT
-
SEA
9h 00m1 stop
Southwest Logo
5:15 am - 3:45 pm
SEA
-
SAT
8h 30m1 stop
$226Southwest
Mon, Jan 5 - Wed, Jan 7
United Airlines Logo
12:30 pm - 9:15 pm
SAT
-
SEA
10h 45m2 stops
United Airlines Logo
8:40 am - 4:53 pm
SEA
-
SAT
6h 13m1 stop
$232United Airlines
Wed, Jan 7 - Sat, Jan 10
Alaska Airlines Logo
6:25 am - 9:05 am
SAT
-
SEA
4h 40mnonstop
Alaska Airlines Logo
11:40 am - 5:45 pm
SEA
-
SAT
4h 05mnonstop
$236Alaska Airlines
Wed, Jan 7 - Sat, Jan 10
Delta Logo
7:35 am - 12:32 pm
SAT
-
PDX
6h 57m1 stop
Delta Logo
5:30 am - 11:43 pm
PDX
-
SAT
16h 13m2 stops
$277Delta
Tue, Jan 20 - Thu, Jan 29
American Airlines Logo
12:56 pm - 6:35 pm
SAT
-
GEG
7h 39m1 stop
American Airlines Logo
6:33 am - 4:56 pm
GEG
-
SAT
8h 23m1 stop
$339American Airlines
Thu, Dec 25 - Tue, Jan 13
American Airlines Logo
12:56 pm - 6:35 pm
SAT
-
GEG
7h 39m1 stop
American Airlines Logo
6:33 am - 4:45 pm
GEG
-
SAT
8h 12m2 stops
$344American Airlines
Thu, Dec 25 - Tue, Jan 13
United Airlines Logo
8:30 am - 1:46 pm
SAT
-
PSC
7h 16m1 stop
United Airlines Logo
6:00 am - 8:44 pm
PSC
-
SAT
12h 44m2 stops
$374United Airlines
Thu, Jan 8 - Mon, Jan 12

Frontier flights from San Antonio to State of Washington

Our best Frontier deals on San Antonio to State of Washington flight tickets
Frontier
Jan 5
SAT2:01 pmSan Antonio
29h 50m
1 stop
SEA5:51 pmSeattle/Tacoma Intl
Jan 9
SEA12:26 pmSeattle/Tacoma Intl
24h 34m
1 stop
SAT3:00 pmSan Antonio
$222
Find similar
Frontier
Jan 8
SAT11:55 amSan Antonio
7h 42m
1 stop
SEA5:37 pmSeattle/Tacoma Intl
Jan 12
SEA9:02 pmSeattle/Tacoma Intl
57h 12m
2 stops
SAT8:14 amSan Antonio
$225
Find similar
Frontier
Jan 5
SAT2:01 pmSan Antonio
29h 50m
1 stop
SEA5:51 pmSeattle/Tacoma Intl
Jan 10
SEA2:49 pmSeattle/Tacoma Intl
16h 29m
1 stop
SAT9:18 amSan Antonio
$227
Find similar

United Airlines flights from San Antonio to State of Washington

Our best United Airlines deals on San Antonio to State of Washington flight tickets
United Airlines
Jan 7
SAT12:30 pmSan Antonio
10h 45m
2 stops
SEA9:15 pmSeattle/Tacoma Intl
Jan 10
SEA8:40 amSeattle/Tacoma Intl
6h 13m
1 stop
SAT4:53 pmSan Antonio
$232
Find similar
United Airlines
Mar 5
SAT5:47 amSan Antonio
6h 02m
1 stop
SEA9:49 amSeattle/Tacoma Intl
Mar 10
SEA12:55 pmSeattle/Tacoma Intl
8h 37m
1 stop
SAT11:32 pmSan Antonio
$249
Find similar
United Airlines
Dec 24
SAT5:59 pmSan Antonio
6h 53m
1 stop
SEA10:52 pmSeattle/Tacoma Intl
Jan 4
SEA11:59 pmSeattle/Tacoma Intl
6h 51m
1 stop
SAT8:50 amSan Antonio
$288
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to State of Washington 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 December 11, 2025.
Use the filters below to find and compare flights from San Antonio to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 1/8

4:40 pm-10:24 pm

1 stop7h 44m

Seattle/Tacoma Intl

Tue 1/13

11:10 pm-11:26 am

1 stop10h 16m

$215

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 1/8

6:46 pm-9:22 pm

Nonstop4h 36m

Seattle/Tacoma Intl

Tue 1/13

11:40 am-5:45 pm

Nonstop4h 05m

$217

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 1/8

11:55 am-10:30 pm

1 stop12h 35m

Seattle/Tacoma Intl

Wed 1/14

11:40 am-5:45 pm

Nonstop4h 05m

$220

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Mon 1/5

5:30 pm-12:30 am

1 stop9h 00m

Seattle/Tacoma Intl

Wed 1/7

5:15 am-3:45 pm

1 stop8h 30m

$226

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Wed 1/7

12:30 pm-9:15 pm

2 stops10h 45m

Seattle/Tacoma Intl

Sat 1/10

8:40 am-4:53 pm

1 stop6h 13m

$232

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Wed 1/7

6:25 am-9:05 am

Nonstop4h 40m

Seattle/Tacoma Intl

Sat 1/10

11:40 am-5:45 pm

Nonstop4h 05m

$236

San AntonioPortland

SAT - PDX

SATPDX

San Antonio

Tue 1/20

7:35 am-12:32 pm

1 stop6h 57m

Portland

Thu 1/29

5:30 am-11:43 pm

2 stops16h 13m

$277

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Thu 12/25

12:56 pm-6:35 pm

1 stop7h 39m

Spokane

Tue 1/13

6:33 am-4:56 pm

1 stop8h 23m

$339

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Thu 12/25

12:56 pm-6:35 pm

1 stop7h 39m

Spokane

Tue 1/13

6:33 am-4:45 pm

2 stops8h 12m

$344

San AntonioPasco

SAT - PSC

SATPSC

San Antonio

Thu 1/8

8:30 am-1:46 pm

1 stop7h 16m

Pasco Tri Cities

Mon 1/12

6:00 am-8:44 pm

2 stops12h 44m

$374

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 Washington from

How to get the cheapest flight ticket from San Antonio to State of Washington

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 State of Washington?

The month of October is, on average, the cheapest month to fly to State of Washington from San Antonio, with most prices found around $266. If you aren’t able to travel to State of Washington during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $267.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from San Antonio to State of Washington is on a Thursday. Travelers who choose to depart for State of Washington on a Thursday will often find tickets for as low as $461. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from San Antonio to State of Washington for around $602.

What is the cheapest time of day to depart on your flight to State of Washington?

The cheapest time of day to fly to State of Washington is in the morning when flights can be purchased for as low as $480. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $556 on average. Flights to State of Washington from San Antonio in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest San Antonio to Washington flight route?

Fly from San Antonio to Seattle/Tacoma Intl for the best San Antonio - Washington flight prices

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $323 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from San Antonio for as low as $290 on momondo.

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

There are 4 cabin classes available to choose from on San Antonio to Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Antonio to State of Washington flights?

You could potentially save up to 47% on your flight if you consider stops on a San Antonio to State of Washington flight.

Cheap San Antonio to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to State of Washington

Best Price Found

$268

Fastest flight time

4h 36m

Direct flights

Every day

Airports in State of Washington

96 airports
The best one-way flight to State of Washington from San Antonio in the past 72 hours is $268. The best round-trip flight deal from San Antonio to State of Washington found on momondo in the last 72 hours is $432.
The fastest flight from San Antonio to State of Washington takes 4h 36m
Direct flights go from San Antonio to State of Washington every day.
There are 96 airports in State of Washington. From San Antonio there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

  • When did momondo last update prices for flights from San Antonio Airport to Washington?

    Prices for flights from San Antonio Airport to Washington were last updated today.

  • How many operators does momondo search for flights from San Antonio Airport to Washington?

  • How old do you have to be to fly from San Antonio Airport to Washington?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Washington.

  • What documentation or ID do you need to fly to Washington?

    The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from San Antonio to State of Washington?

Best airlines flying from San Antonio to State of Washington

Compare and see reviews for airlines that fly from San Antonio to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $87Free CancellationRating
6.3
8,174 reviews
Search Spirit Airlines flights
FrontierPriceFrom $101Free CancellationRating
5.8
3,084 reviews
Search Frontier flights
DeltaPriceFrom $178Free CancellationRating
7.9
8,009 reviews
Search Delta flights
SouthwestPriceFrom $194Free CancellationRating
7.9
4,252 reviews
Search Southwest flights
American AirlinesPriceFrom $194Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
United AirlinesPriceFrom $214Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $237Free CancellationRating
8.0
11,431 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $237Free CancellationRating
7.8
2,818 reviews
Search Hawaiian Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Antonio to Washington for you.

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

Yes. All flights to Washington from San Antonio on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Antonio to Washington.

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

Price alerts on flights to Washington from San Antonio are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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