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
US DOT T-100 · filed dataIn April 2026, Delta Air Lines operated the most departures, one of 2 carriers flying nonstop AUS–SEA; the Airbus A220-100 was the most common aircraft at 32% of departures; flights ran 84% full.
Departures
339
April 2026
Seats
49,173
both directions
Passengers
41,462
both directions
Load factor
84.3%
passengers ÷ seats
Who flies AUS–SEA?
Delta Air Lines operated the most nonstop AUS–SEA departures in April 2026 (172), one of 2 carriers on the route.
- DL
Delta Air Lines
172 departures · 20,117 seats
Share of departures50.7%86.9%
Load
- AS
Alaska Airlines
167 departures · 29,056 seats
Share of departures49.3%82.5%
Load
What plane flies AUS–SEA?
In April 2026, the Airbus A220-100 flew 32% of AUS–SEA departures — more than any other aircraft type.
- Airbus A220-100
109 departures · 85.7% load
32.1% - Boeing 737-900ER
78 departures · 85.1% load
23.0% - Boeing 737 MAX 9
51 departures · 78.2% load
15.0% - Airbus A220-300
39 departures · 87.1% load
11.5% - Boeing 737-800
37 departures · 82.9% load
10.9% - Airbus A319
24 departures · 91.1% load
7.1% - Boeing 737 MAX 8
1 departures · 97.5% load
0.3%
How has AUS–SEA traffic changed?
Nonstop AUS–SEA departures fell from 392 in May 2025 to 339 in April 2026.
Monthly nonstop AUS–SEA traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
392 departures · 49,495 passengers
82.1%
Load
June 2025
411 departures · 54,835 passengers
84.8%
Load
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
By direction
The DOT files each direction separately — they rarely match.
AUS → SEA
83.4% full
170 departures · 20,653 passengers
SEA → AUS
85.3% full
169 departures · 20,809 passengers
Nonstop AUS–SEA traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
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 April 2026, the Airbus A220-100 flew the largest share of departures (32.1%), followed by the Boeing 737-900ER (23.0%).
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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