--- title: "Louisville (SDF) to Denver (DEN) flights: who flies it" description: "United Airlines flies Louisville (SDF) to Denver (DEN) nonstop about 14 times a week, scheduled at 2h 55m to 3h 4m. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/sdf-den" url: "https://2lnr.com/routes/sdf-den.md" date_modified: "2026-10-18T05:10:47Z" --- # Louisville to Denver (SDF-DEN): nonstop flights and who flies them United Airlines flies nonstop between Louisville (SDF) and Denver (DEN), roughly 14 times a week. In the timetable below it flies as UA 405, UA 1510, and UA 2390, scheduled at 2h 55m to 3h 4m for the 1,022 miles. 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 DEN on the interactive map [Get started free](https://2lnr.com/login) 14 Flights a week, 4-week average 2h 55m to 3h 4m Scheduled flight time 1,022 mi Nonstop distance Free To get started ## Louisville to Denver flight schedule Scheduled nonstop departures for SDF to DEN 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 Denver (DEN) | Date | Flight | Airline | Departs SDF | Arrives DEN | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Thu, Oct 22 | UA 2390 | United Airlines | 08:00 | 08:55 | 2h 55m | [Airbus A319](https://2lnr.com/seatmaps/ua/a319.md) | | Thu, Oct 22 | UA 1510 | United Airlines | 15:36 | 16:35 | 2h 59m | Airbus A319 | | Fri, Oct 23 | UA 2390 | United Airlines | 08:00 | 08:55 | 2h 55m | Airbus A319 | | Fri, Oct 23 | UA 1510 | United Airlines | 15:36 | 16:35 | 2h 59m | Airbus A319 | | Sat, Oct 24 | UA 2390 | United Airlines | 08:00 | 08:59 | 2h 59m | [Boeing 737-800](https://2lnr.com/seatmaps/ua/737-800.md) | | Sat, Oct 24 | UA 1510 | United Airlines | 15:36 | 16:35 | 2h 59m | Airbus A319 | | Sun, Oct 25 | UA 1510 | United Airlines | 15:36 | 16:35 | 2h 59m | Airbus A319 | | Mon, Oct 26 | UA 405 | United Airlines | 08:00 | 09:04 | 3h 4m | Boeing 737-800 | | Mon, Oct 26 | UA 1510 | United Airlines | 15:36 | 16:35 | 2h 59m | Airbus A319 | | Tue, Oct 27 | UA 405 | United Airlines | 08:00 | 09:04 | 3h 4m | Boeing 737-800 | | Tue, Oct 27 | UA 1510 | United Airlines | 15:36 | 16:35 | 2h 59m | Airbus A319 | | Wed, Oct 28 | UA 405 | United Airlines | 08:00 | 09:04 | 3h 4m | Boeing 737-800 | | Wed, Oct 28 | UA 1510 | United Airlines | 15:36 | 16:35 | 2h 59m | Airbus A319 | Showing all 13 scheduled SDF to DEN departures across 7 days 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 DEN date on the interactive map ## Aircraft on the Louisville to Denver nonstop United Airlines flies the departures in the schedule table on this page with the [Airbus A319](https://2lnr.com/seatmaps/ua/a319.md) and the [Boeing 737-800](https://2lnr.com/seatmaps/ua/737-800.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## The full SDF to DEN nonstop schedule This page carries the full SDF to DEN nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below. ### See the schedule Who operates each SDF to DEN nonstop and how often it runs, from 2LNR's schedule data. ### Plan on the map See SDF to DEN on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Louisville to Denver nonstop Carriers operating SDF to DEN nonstop in the current schedule. - [United Airlines (UA) route map](https://2lnr.com/routes/airlines/ua.md)\ [The aircraft UA flies](https://2lnr.com/seatmaps/ua.md) See SDF to DEN on the interactive map → ## Frequently asked questions about SDF to DEN **How long is the flight from Louisville (SDF) to Denver (DEN)?** Scheduled flight times from Louisville (SDF) to Denver (DEN) run from 2h 55m to 3h 4m across the departures in the schedule table on this page. The nonstop covers about 1,022 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from SDF to DEN?** United Airlines is currently the only airline flying SDF to DEN nonstop. 2LNR doesn't show award or upgrade space for it on SDF to DEN, so this page carries the schedule rather than a space claim. **How many flights a week are there from SDF to DEN?** About 14 nonstop flights a week run between Louisville (SDF) and Denver (DEN) in the current schedule, operated by United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next. **What time do flights from SDF to DEN depart?** Scheduled SDF to DEN nonstops in the next 7 days with service leave between 08:00 and 15:36, 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 DEN nonstop?** In the schedule table on this page, SDF to DEN nonstops fly as UA 405, UA 1510, and UA 2390 on United Airlines. The table lists each departure by date with its times and aircraft. **Does 2LNR show upgrade or award space on SDF to DEN?** Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on SDF to DEN. The page carries the full SDF to DEN nonstop schedule and who flies each departure, and the reverse direction is linked below. Flying the other way? See [DEN to SDF nonstop flights](https://2lnr.com/routes/den-sdf.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Louisville (SDF)](https://2lnr.com/routes/sdf.md), or [every route from Denver (DEN)](https://2lnr.com/routes/den.md). Nonstops to Denver (DEN) from other airports within 150 miles of Louisville (SDF): - [Lexington (LEX) to Denver (DEN)](https://2lnr.com/routes/lex-den.md), 62 miles from SDF - [Cincinnati (CVG) to Denver (DEN)](https://2lnr.com/routes/cvg-den.md), 84 miles from SDF - [Indianapolis (IND) to Denver (DEN)](https://2lnr.com/routes/ind-den.md), 111 miles from SDF - [Dayton (DAY) to Denver (DEN)](https://2lnr.com/routes/day-den.md), 145 miles from SDF Distances are great-circle between the airports, not driving distance. - [How to plan an upgrade by route](https://2lnr.com/guides/upgrade-strategy.md) ## See the full SDF to DEN nonstop schedule Every scheduled departure on this route, with who flies it. 2LNR shows upgrade and award space by date on the carriers it tracks, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)