Austin (AUS) to Seattle (SEA)
Flight time
≈ 4h 20m
Bearing
319° NW
Austin (AUS) to Seattle (SEA) is 1,769 miles (2,848 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies AUS–SEA
Filed traffic dataIn June 2026, Alaska Airlines operated the most departures, one of 4 carriers flying nonstop AUS–SEA; the Airbus A220-300 was the most common aircraft at 28% of departures; flights ran 92% full.
Departures
416
June 2026
Seats
66,675
both directions
Passengers
61,006
both directions
Load factor
91.5%
RPM ÷ ASM
Who flies AUS–SEA?
Alaska Airlines operated the most nonstop AUS–SEA departures in June 2026 (182), one of 4 carriers on the route.
- AS
182 departures · 32,158 seats
Share of departures43.8%91.3%
Load
- DL
178 departures · 24,938 seats
Share of departures42.8%91.7%
Load
- WN
53 departures · 9,009 seats
Share of departures12.7%91.8%
Load
- AA
3 departures · 570 seats
Share of departures0.7%89.8%
Load
What plane flies AUS–SEA?
In June 2026, the Airbus A220-300 flew 28% of AUS–SEA departures — more than any other aircraft type.
- Airbus A220-300
118 departures · 92.6% load
28.4% - Boeing 737-900ER
104 departures · 91.1% load
25.0% - Boeing 737-800
86 departures · 90.0% load
20.7% - Boeing 737 MAX 9
64 departures · 92.1% load
15.4% - Boeing 737 MAX 8
34 departures · 92.0% load
8.2% - Boeing 737-700
7 departures · 95.2% load
1.7% - Airbus A321
3 departures · 89.8% load
0.7%
How has AUS–SEA traffic changed?
Nonstop AUS–SEA departures rose from 413 in July 2025 to 416 in June 2026.
Monthly nonstop AUS–SEA traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
July 2025
413 departures · 57,653 passengers
88.2%
Load
August 2025
389 departures · 51,123 passengers
84.2%
Load
September 2025
336 departures · 43,013 passengers
80.9%
Load
October 2025
340 departures · 43,720 passengers
83.3%
Load
November 2025
339 departures · 40,494 passengers
76.9%
Load
December 2025
336 departures · 40,743 passengers
79.5%
Load
January 2026
224 departures · 29,546 passengers
81.3%
Load
February 2026
250 departures · 32,841 passengers
83.0%
Load
March 2026
336 departures · 43,610 passengers
88.0%
Load
April 2026
339 departures · 41,462 passengers
84.3%
Load
May 2026
370 departures · 48,585 passengers
84.2%
Load
June 2026
416 departures · 61,006 passengers
91.5%
Load
By direction
Each direction is filed separately — they rarely match.
SEA → AUS
89.6% full
211 departures · 30,499 passengers
AUS → SEA
93.4% full
205 departures · 30,507 passengers
Nonstop AUS–SEA traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through June 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Austin (AUS) from Seattle (SEA)?
AUS to SEA is 1,769 miles (2,848 km / 1,538 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from AUS to SEA?
A nonstop covers the 1,769-mile great-circle distance in roughly 4h 20m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies AUS–SEA?
In June 2026, the Airbus A220-300 flew the largest share of departures (28.4%), followed by the Boeing 737-900ER (25.0%).
What mileage do I earn flying AUS–SEA?
Distance-based programs credit off the 1,769-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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