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Cheap flights from San Antonio to Washington from $100

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 6/23. 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 Washington

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:54 pm - 11:38 am
SAT
-
GEG
17h 44m
1 stop
Frontier Logo
12:31 pm - 6:56 pm
GEG
-
SAT
28h 25m
1 stop
$220Frontier
Sun, Jun 7 - Wed, Jun 10
Frontier Logo
8:56 pm - 7:47 pm
SAT
-
PDX
24h 51m
1 stop
Frontier Logo
5:20 pm - 6:56 pm
PDX
-
SAT
23h 36m
1 stop
$222Frontier
Wed, Jun 17 - Wed, Jun 24
Delta Logo
12:15 pm - 6:52 pm
SAT
-
SEA
8h 37m
1 stop
Delta Logo
5:45 am - 1:31 pm
SEA
-
SAT
5h 46m
1 stop
$255Delta
Wed, Sep 2 - Sat, Sep 12
Southwest Logo
8:35 pm - 12:50 am
SAT
-
SEA
6h 15m
1 stop
Southwest Logo
6:30 am - 8:35 pm
SEA
-
SAT
12h 05m
1 stop
$256Southwest
Fri, Jun 12 - Fri, Jun 26
Delta Logo
5:50 pm - 11:26 pm
SAT
-
SEA
7h 36m
1 stop
Delta Logo
5:45 am - 1:31 pm
SEA
-
SAT
5h 46m
1 stop
$265Delta
Thu, Sep 3 - Mon, Sep 7
Southwest Logo
7:40 pm - 12:50 am
SAT
-
SEA
7h 10m
1 stop
Southwest Logo
6:45 am - 8:40 pm
SEA
-
SAT
11h 55m
2 stops
$266Southwest
Sun, Jun 21 - Sat, Jul 4
Alaska Airlines Logo
4:53 pm - 11:49 pm
SAT
-
PSC
8h 56m
1 stop
Alaska Airlines Logo
6:00 am - 3:57 pm
PSC
-
SAT
7h 57m
1 stop
$339Alaska Airlines
Sat, Aug 22 - Wed, Aug 26
Alaska Airlines Logo
4:53 pm - 9:01 pm
SAT
-
PSC
6h 08m
1 stop
Alaska Airlines Logo
6:00 am - 3:57 pm
PSC
-
SAT
7h 57m
1 stop
$349Alaska Airlines
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
8:53 am - 3:12 pm
SAT
-
GEG
8h 19m
1 stop
United Airlines Logo
4:08 pm - 11:55 pm
GEG
-
SAT
5h 47m
1 stop
$373United Airlines
Wed, Jun 10 - Tue, Jun 16
United Airlines Logo
8:53 am - 3:12 pm
SAT
-
GEG
8h 19m
1 stop
United Airlines Logo
4:08 pm - 11:55 pm
GEG
-
SAT
5h 47m
1 stop
$375United Airlines
Sat, Jun 6 - Wed, Jun 17

Delta flights from San Antonio to State of Washington

Our best Delta deals on San Antonio to State of Washington flight tickets
Delta
Sep 2
SAT12:15 pmSan Antonio
8h 37m
1 stop
SEA6:52 pmSeattle/Tacoma Intl
Sep 12
SEA5:45 amSeattle/Tacoma Intl
5h 46m
1 stop
SAT1:31 pmSan Antonio
$255
Delta
Sep 3
SAT5:50 pmSan Antonio
7h 36m
1 stop
SEA11:26 pmSeattle/Tacoma Intl
Sep 7
SEA5:45 amSeattle/Tacoma Intl
5h 46m
1 stop
SAT1:31 pmSan Antonio
$265
Delta
May 27
SAT5:55 pmSan Antonio
8h 17m
1 stop
SEA12:12 amSeattle/Tacoma Intl
Jun 3
SEA5:30 amSeattle/Tacoma Intl
8h 22m
1 stop
SAT3:52 pmSan Antonio
$272

Southwest flights from San Antonio to State of Washington

Our best Southwest deals on San Antonio to State of Washington flight tickets
Southwest
Jun 12
SAT8:35 pmSan Antonio
6h 15m
1 stop
SEA12:50 amSeattle/Tacoma Intl
Jun 26
SEA6:30 amSeattle/Tacoma Intl
12h 05m
1 stop
SAT8:35 pmSan Antonio
$256
Southwest
Jun 21
SAT7:40 pmSan Antonio
7h 10m
1 stop
SEA12:50 amSeattle/Tacoma Intl
Jul 4
SEA6:45 amSeattle/Tacoma Intl
11h 55m
2 stops
SAT8:40 pmSan Antonio
$266
Southwest
Jun 10
SAT7:55 pmSan Antonio
6h 35m
1 stop
SEA12:30 amSeattle/Tacoma Intl
Sep 16
SEA1:40 pmSeattle/Tacoma Intl
5h 50m
1 stop
SAT9:30 pmSan Antonio
$270

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 May 8, 2026.
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

Cheapest round-trip

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Sun 6/7

7:54 pm-11:38 am

1 stop17h 44m

Spokane

Wed 6/10

12:31 pm-6:56 pm

1 stop28h 25m

$220

San AntonioPortland

SAT - PDX

SATPDX

San Antonio

Wed 6/17

8:56 pm-7:47 pm

1 stop24h 51m

Portland

Wed 6/24

5:20 pm-6:56 pm

1 stop23h 36m

$222

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Wed 9/2

12:15 pm-6:52 pm

1 stop8h 37m

Seattle/Tacoma Intl

Sat 9/12

5:45 am-1:31 pm

1 stop5h 46m

$255

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Fri 6/12

8:35 pm-12:50 am

1 stop6h 15m

Seattle/Tacoma Intl

Fri 6/26

6:30 am-8:35 pm

1 stop12h 05m

$256
Quickest round-trip

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 9/3

5:50 pm-11:26 pm

1 stop7h 36m

Seattle/Tacoma Intl

Mon 9/7

5:45 am-1:31 pm

1 stop5h 46m

$265

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Sun 6/21

7:40 pm-12:50 am

1 stop7h 10m

Seattle/Tacoma Intl

Sat 7/4

6:45 am-8:40 pm

2 stops11h 55m

$266

San AntonioPasco

SAT - PSC

SATPSC

San Antonio

Sat 8/22

4:53 pm-11:49 pm

1 stop8h 56m

Pasco Tri Cities

Wed 8/26

6:00 am-3:57 pm

1 stop7h 57m

$339

San AntonioPasco

SAT - PSC

SATPSC

San Antonio

Sat 8/22

4:53 pm-9:01 pm

1 stop6h 08m

Pasco Tri Cities

Wed 8/26

6:00 am-3:57 pm

1 stop7h 57m

$349

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Wed 6/10

8:53 am-3:12 pm

1 stop8h 19m

Spokane

Tue 6/16

4:08 pm-11:55 pm

1 stop5h 47m

$373

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Sat 6/6

8:53 am-3:12 pm

1 stop8h 19m

Spokane

Wed 6/17

4:08 pm-11:55 pm

1 stop5h 47m

$375

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 May is, on average, the cheapest month to fly to State of Washington from San Antonio, with most prices found around $80. If you aren’t able to travel to State of Washington during the month of May, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $91.

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 Friday. Travelers who choose to depart for State of Washington on a Friday will often find tickets for as low as $429. 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 $570.

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 $466. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $564 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 from San Antonio to 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 $318 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 $257 on momondo.

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

You could potentially save up to 13% 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

$308

Fastest flight time

4h 23m

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 $308. The best round-trip flight deal from San Antonio to State of Washington found on momondo in the last 72 hours is $457.
The fastest flight from San Antonio to State of Washington takes 4h 23m
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

Frequently asked questions about flying from San Antonio to Washington

  • 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
FrontierPriceFrom $78Free CancellationRating
5.6
2,961 reviews
Search Frontier flights
DeltaPriceFrom $109Free CancellationRating
7.9
8,456 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $178Free CancellationRating
7.8
2,837 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $194Free CancellationRating
7.9
4,302 reviews
Search Southwest flights
American AirlinesPriceFrom $194Free CancellationRating
7.1
11,667 reviews
Search American Airlines flights
United AirlinesPriceFrom $210Free CancellationRating
7.4
9,693 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $218Free CancellationRating
7.9
12,345 reviews
Search Alaska 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.

An easier way to manage your State of Washington trip

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