Cheap flights from San Antonio to Seattle from $91
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 Seattle departing on 9/10. 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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Alaska Airlines flights from San Antonio to Seattle
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Hawaiian Airlines flights from San Antonio to Seattle
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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
What is the cheapest month to fly to Seattle?
In general, January is the cheapest month to fly from San Antonio to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $270. If you don’t want to visit Seattle in January, then you should wait until September to fly from San Antonio, when ticket prices are also cheap, with an average price of $296.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from San Antonio is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $441. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from San Antonio because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $567.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from San Antonio in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $402 when looking at flights departing in the afternoon. Flights to Seattle are more costly at noon, with an average ticket price of $621. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest San Antonio to Seattle/Tacoma Intl flight route?
Fly from San Antonio to Seattle/Tacoma Intl for the best San Antonio - Seattle/Tacoma Intl flight prices
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from San Antonio when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $340 when searching 14 weeks out.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 $288 on momondo.
What cabin class options are available on San Antonio to Seattle/Tacoma Intl flights?
There are 4 cabin classes available to choose from on San Antonio to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from San Antonio to Seattle/Tacoma Intl?
Delta, Southwest, and Spirit Airlines are the most popular carriers operating from San Antonio to Seattle/Tacoma Intl
What airlines fly to Seattle?
Alaska Airlines, Delta and American Airlines are the top three most popular airlines that fly to Seattle from San Antonio according to our data. Alaska Airlines is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 8 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
How many flights depart from San Antonio to Seattle on average per day?
As of June 2025, there are 2 flights per day flying from San Antonio to Seattle. The most common time of day flights depart is 7:00PM, with 55% of flights taking off in the evening.
How many flights depart from San Antonio to Seattle on average per week?
As of June 2025, 18 flights take off from San Antonio and land in Seattle each week. The most common flight departure day for this route is Thu, with 44% of weekly flights taking off on this day.
When to book flights from San Antonio to Seattle
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
How far is San Antonio to Seattle/Tacoma Intl by plane?
A flight from San Antonio to Seattle/Tacoma Intl will travel around 1785.1 mi. By plane, this route typically takes 4h 16m.
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 many operators does momondo search for flights from San Antonio Airport to Seattle/Tacoma Intl Airport?
As of June 2025, there are 8 operators available to choose from for flights from San Antonio Airport to Seattle/Tacoma Intl Airport.
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 layovers. 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 required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from San Antonio to Seattle?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from San Antonio to Seattle is Boeing 737 MAX 9 (44.39% of total bookings). The next most popular plane models are Boeing 737 (20.07%), Boeing 737-900 Passenger/BBJ3 (winglets) (15.47%), and Boeing 737-800 Passenger/BBJ2 (winglets) (9.19%).
What is the most popular airline from San Antonio to Seattle?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Antonio to Seattle is Alaska Airlines (52% of total bookings). The next most popular airlines are Delta (16%), American Airlines (11%), and United Airlines (6%).
Best airlines flying from San Antonio to Seattle
Compare and see reviews for airlines that fly from San Antonio to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $89 | Free Cancellation | Rating 6.3 8,052 reviews | |||
| PriceFrom $101 | Free Cancellation | Rating 5.9 3,295 reviews | |||
| PriceFrom $178 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $195 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $216 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $216 | Free Cancellation | Rating 8.0 4,287 reviews | |||
| PriceFrom $237 | Free Cancellation | Rating 7.8 2,494 reviews | |||
| PriceFrom $237 | Free Cancellation | Rating 8.0 10,000 reviews |
Alaska Airlines Flights From San Antonio to Seattle
Alaska Airlines operates around 4 flights from San Antonio to Seattle every week. The average price of these flights found in the last 72 hours has been $411, but momondo users have found Alaska Airlines deals from San Antonio to Seattle from as low as $237 round-trip. Alaska Airlines has been scored 8.0/10 in 10,000 reviews.
Hawaiian Airlines Flights From San Antonio to Seattle
$237 is the best Hawaiian Airlines flight deal from San Antonio to Seattle found on momondo over the last 72 hours. The average Hawaiian Airlines ticket price found was closer to $377, however, with flight time and availability significantly affecting the price. Hawaiian Airlines (7.8/10 from 2,494 user reviews) flies into Seattle from San Antonio 5 times in an average week so prices can vary.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from San Antonio to Seattle?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from San Antonio.
Can I find flights from San Antonio to Seattle with flexible booking policies on momondo?
momondo does allow users to show only those flights to Seattle from San Antonio which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from San Antonio to Seattle?
Once you have performed a search for San Antonio to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from San Antonio to Seattle right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of San Antonio to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.