Austin to Seattle AUS → SEA
Austin-Bergstrom International Airport (AUS) → Seattle-Tacoma International Airport (SEA)
The cheapest return found recently is $428 with Alaska Airlines, 24 Dec – 28 Dec, found yesterday.
Return
The cheapest return fare on each of 9 departure dates is usually $366 to $445.
Cheapest return found recently
$428
24 Dec – 28 Dec · Alaska Airlines
Austin-Bergstrom International Airport (AUS) → Seattle-Tacoma International Airport (SEA)
Leaves 7:15 a.m. · Return leaves 6:25 p.m. · 29 h 42 min of travel, both ways together
out 1 stop, back 1 stop
found yesterday
Cheapest nonstop return
$471
24 Dec – 27 Dec · Alaska Airlines
Austin-Bergstrom International Airport (AUS) → Seattle-Tacoma International Airport (SEA)
Leaves 7:04 p.m. · Return leaves 5:11 p.m. · 8 h 49 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Found recently, and the cheapest we hold
$428 24 Dec – 28 Decfound yesterdaySee prices for these dates
$334 5 Jan 2027 – 13 Jan 2027found 4 days agoSee prices for these dates
What have prices looked like?
Over 23 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $145 to $396.
At $428, the cheapest return found recently is above that range.
23 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 9 departure dates from 23 Dec to 5 Jan 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
No. We hold 4-night return fares on 1 other departure date within 3 days of 24 Dec, and it is not cheaper.
Every date we hold
11 fares on 9 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 23 Dec – 27 Dec | $500 | Southwest Airlines | Austin-Bergstrom International Airport (AUS) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 24 Dec – 28 Dec | $428 | Alaska Airlines | Austin-Bergstrom International Airport (AUS) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 25 Dec – 28 Dec | $371 | Frontier Airlines | Austin-Bergstrom International Airport (AUS) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 27 Dec – 28 Dec | $498 | Southwest Airlines | Austin-Bergstrom International Airport (AUS) → Seattle-Tacoma International Airport (SEA) | out nonstop, back 1 stop | found 4 days ago | See prices for these dates |
| 28 Dec – 29 Dec | $445 | American Airlines | Austin-Bergstrom International Airport (AUS) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 29 Dec – 30 Dec | $366 | American Airlines | Austin-Bergstrom International Airport (AUS) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 1 Jan 2027 – 13 Jan 2027 | $343 | Frontier Airlines | Austin-Bergstrom International Airport (AUS) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 2 Jan 2027 – 3 Jan 2027 | $437 | Southwest Airlines | Austin-Bergstrom International Airport (AUS) → Seattle-Tacoma International Airport (SEA) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 5 Jan 2027 – 13 Jan 2027 | $334 | Alaska Airlines | Austin-Bergstrom International Airport (AUS) → Seattle-Tacoma International Airport (SEA) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
Which month looks cheapest?
January 2027 is the cheapest month — from $334.
Airlines on the cheapest dates: Southwest Airlines, Alaska Airlines, Frontier Airlines, American Airlines.
Premium cabin fares from Austin to Seattle
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 24 Dec – 28 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Austin to Seattle?
Return
The cheapest fares were 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (23 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $300 | $164 | Cheapest seen | 9 |
| 7–13 days | $363 | $300 | +21% | 7 |
| 14–29 days | $363 | $328 | +21% | 13 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Austin → Everett
34 km from Seattle
$496
$68 more than flying to Seattle
26 Dec – 28 Dec · AUS → PAE · out 1 stop, back 1 stop
found 4 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Austin → Everett
34 km from Seattle
$282
26 Dec · AUS → PAE · 1 stop
found 4 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 24 Dec – 28 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work