--- title: "Louisville (SDF) to Austin (AUS) flights: who flies it" description: "American Airlines and Delta Air Lines fly nonstop from SDF to AUS, about 2 flights a week, covering 876 miles. Upgrade and award space by date on 2LNR, next 14 days free." canonical: "https://2lnr.com/routes/sdf-aus" url: "https://2lnr.com/routes/sdf-aus.md" date_modified: "2026-10-18T05:10:47Z" --- # Louisville to Austin (SDF-AUS): nonstop upgrade & award space American Airlines and Delta Air Lines fly nonstop from Louisville (SDF) to Austin (AUS) just twice a week. The timetable below shows the nonstop scheduled at 2h 29m to 2h 45m for the 876 miles. 2LNR checks confirmed upgrade and award space on American Airlines and Delta Air Lines flights on this route, so you can see which departures have space before you book. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 22, 2026. See SDF to AUS on the interactive map [Get started free](https://2lnr.com/login) 2 Flights a week, 4-week average 2h 29m to 2h 45m Scheduled flight time 876 mi Nonstop distance Free To get started ## Louisville to Austin flight schedule Scheduled nonstop departures for SDF to AUS starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from Louisville (SDF) to Austin (AUS) | Date | Flight | Airline | Departs SDF | Arrives AUS | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Sun, May 2 | DL 4540 | Delta Air Lines | 12:30 | 14:15 | 2h 45m | [Embraer E175](https://2lnr.com/seatmaps/dl/e175.md) | | Sun, May 2 | AA 2494 | American Airlines | 14:20 | 15:49 | 2h 29m | [Boeing 737-800](https://2lnr.com/seatmaps/aa/737-800.md) | Showing all 2 scheduled SDF to AUS departures across 1 day with service, starting October 22, 2026. Later dates are on the interactive map. Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure. See every SDF to AUS date on the interactive map ## Aircraft on the Louisville to Austin nonstop In the schedule table on this page, Delta Air Lines flies the [Embraer E175](https://2lnr.com/seatmaps/dl/e175.md), and American Airlines flies the [Boeing 737-800](https://2lnr.com/seatmaps/aa/737-800.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## Confirmed upgrade & award space on SDF to AUS departures 2LNR tracks confirmed upgrade and award space on American Airlines and Delta Air Lines, segment by segment and date by date. Open the calendar for Louisville to Austin to see which departures have space, the next 14 days free on every product and the full horizon on Pro. ### See real availability Confirmed upgrade or award seats by date on the SDF to AUS departures 2LNR tracks, checked against live inventory so you know what's open before you book. ### Set an alert Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're tracking. ### Plan on the map See SDF to AUS on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Louisville to Austin nonstop Carriers operating SDF to AUS nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date. - [American Airlines (AA) route map](https://2lnr.com/routes/airlines/aa.md)\ [The aircraft AA flies](https://2lnr.com/seatmaps/aa.md) - [Delta Air Lines (DL) route map](https://2lnr.com/routes/airlines/dl.md)\ [The aircraft DL flies](https://2lnr.com/seatmaps/dl.md) See SDF to AUS on the interactive map → ## Frequently asked questions about SDF to AUS **How long is the flight from Louisville (SDF) to Austin (AUS)?** Scheduled flight times from Louisville (SDF) to Austin (AUS) run from 2h 29m to 2h 45m across the departures in the schedule table on this page. The nonstop covers about 876 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from SDF to AUS?** American Airlines and Delta Air Lines fly SDF to AUS nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines and Delta Air Lines. **How often does SDF to AUS operate?** The SDF to AUS nonstop currently runs twice a week. Thin schedules like this change by season, and on Pro an alert will catch anything added. **What time do flights from SDF to AUS depart?** Scheduled SDF to AUS nonstops on the next day with service leave between 12:30 and 14:20, local time at Louisville. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate SDF to AUS nonstop?** In the schedule table on this page, SDF to AUS nonstops fly as AA 2494 on American Airlines and DL 4540 on Delta Air Lines. The table lists each departure by date with its times and aircraft. **How do I check upgrade or award availability on SDF to AUS?** Open the SDF to AUS route on the interactive map or the matrix to see confirmed upgrade and award space by date on American Airlines and Delta Air Lines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens. Flying the other way? See [AUS to SDF upgrade and award space](https://2lnr.com/routes/aus-sdf.md). Award seats rather than schedules? See [American Airlines award availability](https://2lnr.com/awards/aa.md) or [Delta Air Lines award availability](https://2lnr.com/awards/dl.md). Looking beyond this route? See [every route from Louisville (SDF)](https://2lnr.com/routes/sdf.md), or [every route from Austin (AUS)](https://2lnr.com/routes/aus.md). Nonstops to Austin (AUS) from other airports within 150 miles of Louisville (SDF): - [Lexington (LEX) to Austin (AUS)](https://2lnr.com/routes/lex-aus.md), 62 miles from SDF - [Cincinnati (CVG) to Austin (AUS)](https://2lnr.com/routes/cvg-aus.md), 84 miles from SDF - [Indianapolis (IND) to Austin (AUS)](https://2lnr.com/routes/ind-aus.md), 111 miles from SDF Nonstops from Louisville (SDF) to other airports within 150 miles of Austin (AUS): - [Louisville (SDF) to Houston (IAH)](https://2lnr.com/routes/sdf-iah.md), 140 miles from AUS Distances are great-circle between the airports, not driving distance. - [How American upgrades clear](https://2lnr.com/about/aa/upgrades.md) - [How to read award availability by date](https://2lnr.com/guides/award-availability.md) ## Never miss SDF to AUS upgrade or award space See what's open by date on this route, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)