C$124 Cheap Flights from San Antonio International (SAT) to Seattle / Tacoma International (SEA)

Compare San Antonio International to Seattle / Tacoma International flight deals

Find the cheapest month or even day of the year to fly to Seattle / Tacoma International

Book the best Seattle / Tacoma International fare with no extra fees

Flight deals from San Antonio International to Seattle / Tacoma International

Looking for a cheap last-minute deal or the best return flight from San Antonio International Airport to Seattle / Tacoma International Airport? If you want to travel next month, return fares start from C$343. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from San Antonio International to Seattle / Tacoma International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Antonio International to Seattle / Tacoma International flights are currently cheapest in August.

Which airlines fly from San Antonio International to Seattle / Tacoma International?

San Antonio International to Seattle / Tacoma International: Alternative routes

Compare routes from San Antonio International to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.

San Antonio to Seattle: Flight information

The things to know before you go.
Cheapest flight foundC$124
Cheapest month to flyAugust
Average flight time4 hrs, 26 mins
Most popular airlineQatar Airways
Average flights per week18

Finding cheap flights from San Antonio International to Seattle / Tacoma International: Frequently asked questions

The best price we found for a return flight from San Antonio International to Seattle / Tacoma International is C$247. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
4 hours and 26 minutes is the average flight time from San Antonio International to Seattle / Tacoma International.
Qatar Airways and Alaska Airlines fly direct from San Antonio International to Seattle / Tacoma International.
As of June 2026, there are 18 flights per week flying from San Antonio International to Seattle / Tacoma International.
The cheapest month to fly from San Antonio International to Seattle / Tacoma International is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Antonio International Airport to Seattle / Tacoma International Airport on Wednesday, August 26, 2026.
Yes – the average flight time is 4 hours and 26 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle / Tacoma International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta and Alaska Airlines offer the cheapest flight tickets to Seattle / Tacoma International.

Traveling from San Antonio International Airport (SAT) to Seattle-Tacoma International Airport (SEA): what you need to know

  • The average duration of a direct flight from San Antonio International Airport to Seattle-Tacoma International Airport is 4 hours 25 minutes. Seattle's timezone is UTC-7, making Seattle 2 hours behind San Antonio.

  • Each week, there are 12 flights from San Antonio International Airport to Seattle-Tacoma International Airport. If you prefer to be on board as soon as possible, take the 07:00 Alaska Airlines flight. If you're keen to make the most of your day before you fly, the last flight from SAT to SEA is 23:52 with Alaska Airlines.

  • If you're taking off during a major holiday or other peak period, give yourself extra time. A good general rule is two hours ahead of domestic flights and up to four hours before international departures. Queues at check-in and security will be longer.

  • If you'd like a stopover for your flight from San Antonio International Airport to Seattle-Tacoma International Airport, simply deselect 'Direct flights only' and explore your options. These are the popular stopovers between SAT and SEA:

    • Phoenix Sky Harbor International Airport

    • Denver International Airport

    • Harry Reid Airport (formerly McCarran Airport)

How to find the cheapest flights from San Antonio International Airport (SAT) to Seattle-Tacoma International Airport (SEA)

  • The best price we've seen for a one-way ticket from San Antonio International Airport to Seattle-Tacoma International Airport is C$124. The cheapest price for a return flight is C$247. Bear in mind that fares could change due to availability when booking.

  • Score cheap flight tickets from SAT to SEA by booking at least 9 months ahead. According to our research, that's the sweet spot for finding a bargain.

  • May is the cheapest month for flight tickets from San Antonio International Airport to Seattle-Tacoma International Airport. If you prefer to fly at a different time of year, the 'Whole month' tool will give you the lowest airfares across every month.

  • Sign into your online account or use the app to create a Price Alert. We'll notify you right away if there's a cheaper deal on this route. It's easy to do, and it'll save you from searching for cheap flight tickets from SAT to SEA every day.

  • Use filters to tailor your flights from San Antonio International Airport to Seattle-Tacoma International Airport. Select your ideal departure and arrival times, number of stops and airlines. Alternatively, sort your results by 'Cheapest' to see the best deals.

Handy information about San Antonio International Airport (SAT)

Arriving at Seattle-Tacoma International Airport (SEA)

Getting from Seattle-Tacoma International Airport (SEA) to central Seattle

  • Seattle-Tacoma International Airport is approximately 23 kilometres from central Seattle. With a cab or in your own car rental, the drive is about 18 minutes.

  • It takes roughly 54 minutes if you're using public transport.

When to fly to Seattle-Tacoma International Airport (SEA)

  • It's time to choose your trip dates for your flight from San Antonio International Airport to Seattle-Tacoma International Airport. July is the busiest month to visit Seattle. If you want a quieter vibe, go in May.

  • The warmest month in Seattle is August, with the temperature ranging between 12ºC and 28ºC. Lock in your flights from San Antonio International Airport to Seattle-Tacoma International Airport in this month if this is the type of weather you like.

  • If you want to travel in cooler conditions, search for a cheap ticket from SAT to SEA in February. Temperatures average between -1ºC and 11ºC then.

More about Seattle

  • Start your Seattle trip right by finding an amazing stay. After booking your flight from SAT to SEA, browse our range of accommodation options including:

  • There are so many things to explore in this city it can be difficult to know where to start. Picardo Farm P-Patch Community Garden, Elliott Bay Waterfront and LMN Architects are top attractions which should feature on every Seattle itinerary.

Complete your Seattle trip with hotels and a car rental

  • Once you've secured your cheap ticket to Seattle-Tacoma International Airport, check out the lowest prices and exclusive offers on hotels. You can also compare a range of car rental companies in one go to find the best car rental price for your Seattle escape.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.