--- title: "Denver (DEN) to Alamosa (ALS) flights: who flies it" description: "Key Lime Air flies Denver (DEN) to Alamosa (ALS) nonstop about 12 times a week, scheduled at 50 minutes to 55 minutes. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/den-als" url: "https://2lnr.com/routes/den-als.md" date_modified: "2026-10-18T05:10:47Z" --- # Denver to Alamosa (DEN-ALS): nonstop flights and who flies them Key Lime Air flies the DEN to ALS nonstop about 12 times a week. In the timetable below it flies as KG 3583 and KG 3587, scheduled at 50 minutes to 55 minutes for the 179 miles. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 23, 2026. See DEN to ALS on the interactive map [Get started free](https://2lnr.com/login) 12 Flights a week, 4-week average 50 minutes to 55 minutes Scheduled flight time 179 mi Nonstop distance Free To get started ## Denver to Alamosa flight schedule Scheduled nonstop departures for DEN to ALS 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 Denver (DEN) to Alamosa (ALS) | Date | Flight | Airline | Departs DEN | Arrives ALS | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Thu, Oct 22 | KG 3583 | Key Lime Air | 12:40 | 13:30 | 50 minutes | Embraer ERJ-145 | | Thu, Oct 22 | KG 3587 | Key Lime Air | 17:15 | 18:10 | 55 minutes | Embraer ERJ-145 | | Fri, Oct 23 | KG 3583 | Key Lime Air | 12:40 | 13:30 | 50 minutes | Embraer ERJ-145 | | Fri, Oct 23 | KG 3587 | Key Lime Air | 17:15 | 18:10 | 55 minutes | Embraer ERJ-145 | | Sat, Oct 24 | KG 3583 | Key Lime Air | 12:40 | 13:30 | 50 minutes | Embraer ERJ-145 | | Sun, Oct 25 | KG 3583 | Key Lime Air | 12:40 | 13:30 | 50 minutes | Embraer ERJ-145 | | Sun, Oct 25 | KG 3587 | Key Lime Air | 17:15 | 18:10 | 55 minutes | Embraer ERJ-145 | | Mon, Oct 26 | KG 3583 | Key Lime Air | 12:40 | 13:30 | 50 minutes | Embraer ERJ-145 | | Mon, Oct 26 | KG 3587 | Key Lime Air | 17:15 | 18:10 | 55 minutes | Embraer ERJ-145 | | Tue, Oct 27 | KG 3583 | Key Lime Air | 12:40 | 13:30 | 50 minutes | Embraer ERJ-145 | | Wed, Oct 28 | KG 3583 | Key Lime Air | 12:40 | 13:30 | 50 minutes | Embraer ERJ-145 | | Wed, Oct 28 | KG 3587 | Key Lime Air | 17:15 | 18:10 | 55 minutes | Embraer ERJ-145 | Showing all 12 scheduled DEN to ALS 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 DEN to ALS date on the interactive map ## Aircraft on the Denver to Alamosa nonstop Key Lime Air flies the Embraer ERJ-145 on every departure in the schedule table on this page. ## The full DEN to ALS nonstop schedule This page carries the full DEN to ALS nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below. ### See the schedule Who operates each DEN to ALS nonstop and how often it runs, from 2LNR's schedule data. ### Plan on the map See DEN to ALS on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Denver to Alamosa nonstop Carriers operating DEN to ALS nonstop in the current schedule. - [Key Lime Air (KG) route map](https://2lnr.com/routes/airlines/kg.md)\ [The aircraft KG flies](https://2lnr.com/seatmaps/kg.md) See DEN to ALS on the interactive map → ## Frequently asked questions about DEN to ALS **How long is the flight from Denver (DEN) to Alamosa (ALS)?** Scheduled flight times from Denver (DEN) to Alamosa (ALS) run from 50 minutes to 55 minutes across the departures in the schedule table on this page. The nonstop covers about 179 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from DEN to ALS?** Key Lime Air is currently the only airline flying DEN to ALS nonstop. 2LNR doesn't show award or upgrade space for it on DEN to ALS, so this page carries the schedule rather than a space claim. **How many flights a week are there from DEN to ALS?** About 12 nonstop flights a week run between Denver (DEN) and Alamosa (ALS) in the current schedule, operated by Key Lime Air. Frequency shifts by season, and the schedule table on this page shows what is scheduled next. **What time do flights from DEN to ALS depart?** Scheduled DEN to ALS nonstops in the next 7 days with service leave between 12:40 and 17:15, local time at Denver. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate DEN to ALS nonstop?** In the schedule table on this page, DEN to ALS nonstops fly as KG 3583 and KG 3587 on Key Lime Air. The table lists each departure by date with its times and aircraft. **Does 2LNR show upgrade or award space on DEN to ALS?** Not on this route: 2LNR doesn't show award or upgrade space for Key Lime Air on DEN to ALS. The page carries the full DEN to ALS nonstop schedule and who flies each departure, and the reverse direction is linked below. Flying the other way? See [ALS to DEN nonstop flights](https://2lnr.com/routes/als-den.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Denver (DEN)](https://2lnr.com/routes/den.md), or [every route from Alamosa (ALS)](https://2lnr.com/routes/als.md). Nonstops from Denver (DEN) to other airports within 150 miles of Alamosa (ALS): - [Denver (DEN) to Taos (TSM)](https://2lnr.com/routes/den-tsm.md), 70 miles from ALS - [Denver (DEN) to Pueblo (PUB)](https://2lnr.com/routes/den-pub.md), 95 miles from ALS - [Denver (DEN) to Gunnison (GUC)](https://2lnr.com/routes/den-guc.md), 96 miles from ALS - [Denver (DEN) to Durango (DRO)](https://2lnr.com/routes/den-dro.md), 106 miles from ALS - [Denver (DEN) to Telluride (TEX)](https://2lnr.com/routes/den-tex.md), 112 miles from ALS 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 DEN to ALS 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)