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Cheap flights from San Antonio to Washington from $83

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 4/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 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
4:04 pm - 11:38 am
SAT
-
PDX
21h 34m
1 stop
Frontier Logo
12:38 pm - 3:53 pm
PDX
-
SAT
25h 15m
1 stop
$171Frontier
Tue, Apr 14 - Tue, Apr 21
Frontier Logo
7:54 pm - 4:46 pm
SAT
-
PDX
22h 52m
1 stop
Frontier Logo
8:46 pm - 8:14 pm
PDX
-
SAT
21h 28m
1 stop
$187Frontier
Sat, May 9 - Mon, May 11
Southwest Logo
5:45 pm - 10:10 pm
SAT
-
SEA
6h 25m
1 stop
Southwest Logo
6:40 am - 5:00 pm
SEA
-
SAT
8h 20m
2 stops
$235Southwest
Sat, Apr 25 - Sat, May 2
Southwest Logo
2:45 pm - 12:55 am
SAT
-
SEA
12h 10m
2 stops
Southwest Logo
5:30 am - 3:50 pm
SEA
-
SAT
8h 20m
1 stop
$245Southwest
Thu, May 7 - Thu, May 14
Delta Logo
4:47 pm - 11:55 pm
SAT
-
SEA
9h 08m
1 stop
Delta Logo
6:00 am - 5:20 pm
SEA
-
SAT
9h 20m
1 stop
$247Delta
Thu, May 7 - Sun, May 10
United Airlines Logo
4:35 pm - 9:10 pm
SAT
-
SEA
6h 35m
1 stop
United Airlines Logo
1:19 pm - 10:02 pm
SEA
-
SAT
6h 43m
1 stop
$250United Airlines
Tue, Aug 4 - Wed, Aug 12
United Airlines Logo
2:25 pm - 9:16 pm
SAT
-
GEG
8h 51m
2 stops
United Airlines Logo
6:00 am - 8:49 pm
GEG
-
SAT
12h 49m
2 stops
$327United Airlines
Sat, May 9 - Tue, May 12
Delta Logo
6:03 pm - 11:58 pm
SAT
-
PSC
7h 55m
1 stop
Delta Logo
1:52 pm - 12:16 am
PSC
-
SAT
8h 24m
1 stop
$339Delta
Thu, Jun 11 - Wed, Jun 17
Alaska Airlines Logo
7:37 pm - 12:14 am
SAT
-
PSC
6h 37m
1 stop
Alaska Airlines Logo
8:00 am - 6:38 pm
PSC
-
SAT
8h 38m
1 stop
$367Alaska Airlines
Tue, Sep 1 - Sat, Sep 5
Alaska Airlines Logo
6:01 pm - 11:59 pm
SAT
-
PSC
7h 58m
1 stop
Alaska Airlines Logo
7:30 pm - 5:40 am
PSC
-
SAT
8h 10m
1 stop
$403Alaska Airlines
Sat, May 9 - Tue, May 12

Southwest flights from San Antonio to State of Washington

Our best Southwest deals on San Antonio to State of Washington flight tickets
Southwest
Apr 25
SAT5:45 pmSan Antonio
6h 25m
1 stop
SEA10:10 pmSeattle/Tacoma Intl
May 2
SEA6:40 amSeattle/Tacoma Intl
8h 20m
2 stops
SAT5:00 pmSan Antonio
$235
Southwest
May 7
SAT2:45 pmSan Antonio
12h 10m
2 stops
SEA12:55 amSeattle/Tacoma Intl
May 14
SEA5:30 amSeattle/Tacoma Intl
8h 20m
1 stop
SAT3:50 pmSan Antonio
$245
Southwest
Apr 25
SAT5:45 pmSan Antonio
6h 25m
1 stop
SEA10:10 pmSeattle/Tacoma Intl
May 2
SEA6:40 amSeattle/Tacoma Intl
8h 25m
1 stop
SAT5:05 pmSan Antonio
$255

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
Aug 4
SAT4:35 pmSan Antonio
6h 35m
1 stop
SEA9:10 pmSeattle/Tacoma Intl
Aug 12
SEA1:19 pmSeattle/Tacoma Intl
6h 43m
1 stop
SAT10:02 pmSan Antonio
$250
United Airlines
Apr 15
SAT4:17 pmSan Antonio
8h 39m
2 stops
SEA10:56 pmSeattle/Tacoma Intl
Apr 19
SEA11:35 pmSeattle/Tacoma Intl
7h 07m
1 stop
SAT8:42 amSan Antonio
$282
United Airlines
Apr 8
SAT6:02 pmSan Antonio
7h 10m
1 stop
SEA11:12 pmSeattle/Tacoma Intl
Apr 13
SEA11:35 pmSeattle/Tacoma Intl
7h 07m
1 stop
SAT8:42 amSan Antonio
$291

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 March 24, 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 AntonioPortland

SAT - PDX

SATPDX

San Antonio

Tue 4/14

4:04 pm-11:38 am

1 stop21h 34m

Portland

Tue 4/21

12:38 pm-3:53 pm

1 stop25h 15m

$171

San AntonioPortland

SAT - PDX

SATPDX

San Antonio

Sat 5/9

7:54 pm-4:46 pm

1 stop22h 52m

Portland

Mon 5/11

8:46 pm-8:14 pm

1 stop21h 28m

$187

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Sat 4/25

5:45 pm-10:10 pm

1 stop6h 25m

Seattle/Tacoma Intl

Sat 5/2

6:40 am-5:00 pm

2 stops8h 20m

$235

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 5/7

2:45 pm-12:55 am

2 stops12h 10m

Seattle/Tacoma Intl

Thu 5/14

5:30 am-3:50 pm

1 stop8h 20m

$245

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Thu 5/7

4:47 pm-11:55 pm

1 stop9h 08m

Seattle/Tacoma Intl

Sun 5/10

6:00 am-5:20 pm

1 stop9h 20m

$247
Quickest round-trip

San AntonioSeattle

SAT - SEA

SATSEA

San Antonio

Tue 8/4

4:35 pm-9:10 pm

1 stop6h 35m

Seattle/Tacoma Intl

Wed 8/12

1:19 pm-10:02 pm

1 stop6h 43m

$250

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Sat 5/9

2:25 pm-9:16 pm

2 stops8h 51m

Spokane

Tue 5/12

6:00 am-8:49 pm

2 stops12h 49m

$327

San AntonioPasco

SAT - PSC

SATPSC

San Antonio

Thu 6/11

6:03 pm-11:58 pm

1 stop7h 55m

Pasco Tri Cities

Wed 6/17

1:52 pm-12:16 am

1 stop8h 24m

$339

San AntonioPasco

SAT - PSC

SATPSC

San Antonio

Tue 9/1

7:37 pm-12:14 am

1 stop6h 37m

Pasco Tri Cities

Sat 9/5

8:00 am-6:38 pm

1 stop8h 38m

$367

San AntonioPasco

SAT - PSC

SATPSC

San Antonio

Sat 5/9

6:01 pm-11:59 pm

1 stop7h 58m

Pasco Tri Cities

Tue 5/12

7:30 pm-5:40 am

1 stop8h 10m

$403

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 $260. 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 $269.

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 $427. 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 $582.

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 afternoon when flights can be purchased for as low as $447. 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 $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 $256 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 27% 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

$249

Fastest flight time

4h 25m

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 $249. The best round-trip flight deal from San Antonio to State of Washington found on momondo in the last 72 hours is $397.
The fastest flight from San Antonio to State of Washington takes 4h 25m
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
FrontierPriceFrom $78Free CancellationRating
5.7
3,018 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $87Free CancellationRating
6.3
8,536 reviews
Search Spirit Airlines flights
DeltaPriceFrom $112Free CancellationRating
7.9
8,319 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $178Free CancellationRating
7.8
2,840 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $190Free CancellationRating
8.0
4,329 reviews
Search Southwest flights
American AirlinesPriceFrom $194Free CancellationRating
7.1
11,492 reviews
Search American Airlines flights
United AirlinesPriceFrom $214Free CancellationRating
7.4
9,467 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $217Free CancellationRating
7.9
12,102 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.

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