$145 Cheap Frontier Airlines flights Seattle (SEA) to Austin (AUS)

View $145 flight on Sat, Aug 30, 2025Opens in a new window

$145 Cheap Frontier Airlines flights Seattle (SEA) to Austin (AUS)

Prices were available within the past 7 days and start at $145 for one-way flights and $195 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Sep 6 - Thu, Sep 11
SEA
Seattle
AUS
Austin
$195 Roundtrip, found 3 days ago
$195
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sat, Sep 6 from Seattle to Austin, returning Thu, Sep 11, priced at $195 found 3 days ago
Frontier Airlines
Tue, Aug 19 - Wed, Aug 27
SEA
Seattle
AUS
Austin
$203 Roundtrip, found 16 hours ago
$203
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Tue, Aug 19 from Seattle to Austin, returning Wed, Aug 27, priced at $203 found 16 hours ago
Frontier Airlines
Wed, Sep 3 - Tue, Sep 9
SEA
Seattle
AUS
Austin
$207 Roundtrip, found 14 hours ago
$207
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Sep 3 from Seattle to Austin, returning Tue, Sep 9, priced at $207 found 14 hours ago
Frontier Airlines
Tue, Aug 26 - Tue, Sep 2
SEA
Seattle
AUS
Austin
$208 Roundtrip, found 18 hours ago
$208
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Tue, Aug 26 from Seattle to Austin, returning Tue, Sep 2, priced at $208 found 18 hours ago
Frontier Airlines
Wed, Sep 3 - Tue, Sep 9
SEA
Seattle
AUS
Austin
$212 Roundtrip, found 14 hours ago
$212
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Sep 3 from Seattle to Austin, returning Tue, Sep 9, priced at $212 found 14 hours ago
Frontier Airlines
Mon, Oct 13 - Wed, Oct 15
SEA
Seattle
AUS
Austin
$216 Roundtrip, found 2 days ago
$216
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Mon, Oct 13 from Seattle to Austin, returning Wed, Oct 15, priced at $216 found 2 days ago
Flights from Seattle (SEA) to Austin (AUS)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Austin-Bergstrom Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Popular airline
Alaska Airlines
Distance
1768 mi
Average flight time
6 hours 47 mins

Frequently asked questions

How much is a Frontier Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Austin-Bergstrom Intl. Airport (AUS)?
Finding cheap one-way Frontier Airlines flights from SEA to AUS from $145 on Expedia couldn't be simpler --- just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly return fares from $195 for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SEA to AUS with Frontier Airlines?
Search for one-way or return flights to Austin in January or December. You could find an affordable fare with Frontier Airlines during these off-peak months.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Austin-Bergstrom Intl. Airport (AUS) with Frontier Airlines?
To find cheap Frontier Airlines fares from Seattle - Tacoma Intl. Airport (SEA) to Austin-Bergstrom Intl. Airport (AUS), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect what you pay. Sunday is generally the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Frontier Airlines fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Austin-Bergstrom Intl. Airport (AUS)?
Fill in your dates, press search and select the "Nonstop" filter on Expedia to browse any direct flights from SEA to AUS with Frontier Airlines or another carrier.
What is the earliest Frontier Airlines flight from SEA to AUS?
Browse Frontier Airlines's earliest flights from SEA to AUS by checking the "Early Morning" and "Morning" filters. Not only will you get to your destination sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Frontier Airlines fly into in Austin?
Austin-Bergstrom Intl. Airport (AUS) is the main Austin gateway for Frontier Airlines flights from Seattle - Tacoma Intl. Airport (SEA).
Why fly with Frontier Airlines from SEA to AUS?
With a rewarding loyalty program, Frontier Airlines is a top pick for many travelers journeying from SEA to AUS. Plus, if you're a Frontier Miles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Frontier Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Austin-Bergstrom Intl. Airport (AUS)?
Depending on the type of ticket you purchased, a fee may apply if you cancel or change your flight more than 24 hours after it's been confirmed. To find plane tickets with more flexibility, select our "No cancel fee" or "Changes included" filter while searching for flights. To learn more about canceling or modifying your reservation, visit "Trips," select your flight and click on "Manage Booking."

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*Available to One Key members.