--- title: "Carlsbad (CLD) to Denver (DEN) flights: who flies it" description: "United Airlines flies Carlsbad (CLD) to Denver (DEN) nonstop about 14 times a week, scheduled at 2h 25m to 2h 26m. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/cld-den" url: "https://2lnr.com/routes/cld-den.md" date_modified: "2026-10-18T05:10:47Z" --- # Carlsbad to Denver (CLD-DEN): nonstop flights and who flies them United Airlines flies nonstop between Carlsbad (CLD) and Denver (DEN), roughly 14 times a week. In the timetable below it flies as UA 5515 and UA 5520, scheduled at 2h 25m to 2h 26m for the 839 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 CLD to DEN on the interactive map [Get started free](https://2lnr.com/login) 14 Flights a week, 4-week average 2h 25m to 2h 26m Scheduled flight time 839 mi Nonstop distance Free To get started ## Carlsbad to Denver flight schedule Scheduled nonstop departures for CLD 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 Carlsbad (CLD) to Denver (DEN) | Date | Flight | Airline | Departs CLD | Arrives DEN | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Thu, Oct 22 | UA 5520 | United Airlines | 08:40 | 12:05 | 2h 25m | [Embraer E175](https://2lnr.com/seatmaps/ua/e175.md) | | Thu, Oct 22 | UA 5515 | United Airlines | 13:04 | 16:30 | 2h 26m | Embraer E175 | | Fri, Oct 23 | UA 5520 | United Airlines | 08:40 | 12:05 | 2h 25m | Embraer E175 | | Fri, Oct 23 | UA 5515 | United Airlines | 13:04 | 16:30 | 2h 26m | Embraer E175 | | Sat, Oct 24 | UA 5520 | United Airlines | 08:40 | 12:05 | 2h 25m | Embraer E175 | | Sat, Oct 24 | UA 5515 | United Airlines | 13:04 | 16:30 | 2h 26m | Embraer E175 | | Sun, Oct 25 | UA 5520 | United Airlines | 08:40 | 12:05 | 2h 25m | Embraer E175 | | Sun, Oct 25 | UA 5515 | United Airlines | 13:04 | 16:30 | 2h 26m | Embraer E175 | | Mon, Oct 26 | UA 5520 | United Airlines | 08:40 | 12:05 | 2h 25m | Embraer E175 | | Mon, Oct 26 | UA 5515 | United Airlines | 13:04 | 16:30 | 2h 26m | Embraer E175 | | Tue, Oct 27 | UA 5520 | United Airlines | 08:40 | 12:05 | 2h 25m | Embraer E175 | | Tue, Oct 27 | UA 5515 | United Airlines | 13:04 | 16:30 | 2h 26m | Embraer E175 | | Wed, Oct 28 | UA 5520 | United Airlines | 08:40 | 12:05 | 2h 25m | Embraer E175 | | Wed, Oct 28 | UA 5515 | United Airlines | 13:04 | 16:30 | 2h 26m | Embraer E175 | Showing all 14 scheduled CLD 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 CLD to DEN date on the interactive map ## Aircraft on the Carlsbad to Denver nonstop United Airlines flies the [Embraer E175](https://2lnr.com/seatmaps/ua/e175.md) on every departure in the schedule table on this page. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## The full CLD to DEN nonstop schedule This page carries the full CLD 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 CLD to DEN nonstop and how often it runs, from 2LNR's schedule data. ### Plan on the map See CLD to DEN on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Carlsbad to Denver nonstop Carriers operating CLD 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 CLD to DEN on the interactive map → ## Frequently asked questions about CLD to DEN **How long is the flight from Carlsbad (CLD) to Denver (DEN)?** Scheduled flight times from Carlsbad (CLD) to Denver (DEN) run from 2h 25m to 2h 26m across the departures in the schedule table on this page. The nonstop covers about 839 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from CLD to DEN?** United Airlines is currently the only airline flying CLD to DEN nonstop. 2LNR doesn't show award or upgrade space for it on CLD to DEN, so this page carries the schedule rather than a space claim. **How many flights a week are there from CLD to DEN?** About 14 nonstop flights a week run between Carlsbad (CLD) 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 CLD to DEN depart?** Scheduled CLD to DEN nonstops in the next 7 days with service leave between 08:40 and 13:04, local time at Carlsbad. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate CLD to DEN nonstop?** In the schedule table on this page, CLD to DEN nonstops fly as UA 5515 and UA 5520 on United Airlines. The table lists each departure by date with its times and aircraft. **Does 2LNR show upgrade or award space on CLD to DEN?** Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on CLD to DEN. The page carries the full CLD to DEN nonstop schedule and who flies each departure, and the reverse direction is linked below. Flying the other way? See [DEN to CLD nonstop flights](https://2lnr.com/routes/den-cld.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Carlsbad (CLD)](https://2lnr.com/routes/cld.md), or [every route from Denver (DEN)](https://2lnr.com/routes/den.md). Nonstops to Denver (DEN) from other airports within 150 miles of Carlsbad (CLD): - [San Diego (SAN) to Denver (DEN)](https://2lnr.com/routes/san-den.md), 28 miles from CLD - [Santa Ana (SNA) to Denver (DEN)](https://2lnr.com/routes/sna-den.md), 51 miles from CLD - [Palm Springs (PSP) to Denver (DEN)](https://2lnr.com/routes/psp-den.md), 66 miles from CLD - [Ontario (ONT) to Denver (DEN)](https://2lnr.com/routes/ont-den.md), 67 miles from CLD - [Los Angeles (LAX) to Denver (DEN)](https://2lnr.com/routes/lax-den.md), 86 miles from CLD 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 CLD 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)