Seattle to Austin BFI, SEA → AUS
Boeing Field International Airport (BFI), Seattle-Tacoma International Airport (SEA) → Austin-Bergstrom International Airport (AUS)
The cheapest return found recently is $337 with Alaska Airlines, 5 Jan 2027 – 13 Jan 2027, found 4 days ago. The cheapest one-way found recently is $153 with Southwest Airlines, 4 Jan 2027, found 3 days ago.
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$337
5 Jan 2027 – 13 Jan 2027 · Alaska Airlines
Seattle-Tacoma International Airport (SEA) → Austin-Bergstrom International Airport (AUS)
Leaves 8:15 a.m. · Return leaves 7:03 p.m. · 8 h 48 min of travel, both ways together
out nonstop, back nonstop
found 4 days ago
Cheapest nonstop return
$337
5 Jan 2027 – 13 Jan 2027 · Alaska Airlines
Seattle-Tacoma International Airport (SEA) → Austin-Bergstrom International Airport (AUS)
Leaves 8:15 a.m. · Return leaves 7:03 p.m. · 8 h 48 min of travel, both ways together
out nonstop, back nonstop
found 4 days ago
Found recently, and the cheapest we hold
$337 5 Jan 2027 – 13 Jan 2027found 4 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 18 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $162 to $400.
18 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?
Not enough comparable prices yet: we hold return fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other 8-night return fares leaving within 3 days of 5 Jan 2027 to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 5 Jan 2027 – 13 Jan 2027 | $337 | Alaska Airlines | Seattle-Tacoma International Airport (SEA) → Austin-Bergstrom International Airport (AUS) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
Airlines on the cheapest dates: Alaska Airlines.
One-way
The cheapest one-way fare on each of 6 departure dates is usually $171 to $198.
Cheapest one-way found recently
$153
4 Jan 2027 · Southwest Airlines
Seattle-Tacoma International Airport (SEA) → Austin-Bergstrom International Airport (AUS)
Leaves 8:30 a.m. · 4 h trip
nonstop
found 3 days ago
Cheapest nonstop one-way
$153
4 Jan 2027 · Southwest Airlines
Seattle-Tacoma International Airport (SEA) → Austin-Bergstrom International Airport (AUS)
Leaves 8:30 a.m. · 4 h trip
nonstop
found 3 days ago
Found recently, and the cheapest we hold
$153 4 Jan 2027found 3 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 22 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $112 to $160.
22 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 one-way price?
Compared with the cheapest one-way fare on each of 6 departure dates from 26 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 one-way fares on 4 other departure dates within 3 days of 4 Jan 2027, and none is cheaper.
Every date we hold
10 fares on 6 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 26 Dec | $205 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → Austin-Bergstrom International Airport (AUS) | 1 stop | found 4 days ago | Open this trip |
| 1 Jan 2027 | $169 | American Airlines | Seattle-Tacoma International Airport (SEA) → Austin-Bergstrom International Airport (AUS) | 1 stop | found 4 days ago | Open this trip |
| 2 Jan 2027 | $201 | Alaska Airlines | Seattle-Tacoma International Airport (SEA) → Austin-Bergstrom International Airport (AUS) | nonstop | found 4 days ago | Open this trip |
| 3 Jan 2027 | $189 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → Austin-Bergstrom International Airport (AUS) | 1 stop | found 4 days ago | Open this trip |
| 4 Jan 2027 | $153 | Southwest Airlines | Seattle-Tacoma International Airport (SEA) → Austin-Bergstrom International Airport (AUS) | nonstop | found 3 days ago | Open this trip |
| 5 Jan 2027 | $175 | Alaska Airlines | Seattle-Tacoma International Airport (SEA) → Austin-Bergstrom International Airport (AUS) | nonstop | found 4 days ago | Open this trip |
Which month looks cheapest?
January 2027 is the cheapest month — from $153.
Airlines on the cheapest dates: Frontier Airlines, Alaska Airlines, American Airlines, Southwest Airlines.
Premium cabin fares from Seattle to Austin
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 5 Jan 2027 – 13 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 4 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Seattle to Austin?
Return
Not enough history yet: in 18 days of return prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
One-way
Not enough history yet: in 22 days of one-way prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Seattle → San Antonio
118 km from Austin
$255
$82 less than flying to Austin
26 Oct – 31 Oct · SEA → SAT · out 1 stop, back nonstop
found yesterday
Everett → Austin
34 km from Seattle
$410
$73 more than flying from Seattle
5 Jan 2027 – 13 Jan 2027 · PAE → AUS · out 1 stop, back nonstop
found 4 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Everett → Austin
34 km from Seattle
$293
$140 more than flying from Seattle
4 Jan 2027 · PAE → AUS · 1 stop
found 3 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 5 Jan 2027 – 13 Jan 2027. 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