Tucson to Denver (TUS-DEN): nonstop flights and who flies them

United Airlines and Frontier Airlines fly nonstop between Tucson (TUS) and Denver (DEN), roughly 34 times a week. With United Airlines running most of the schedule, the shape of a week is predictable, which makes an open premium seat on a given date easy to spot and quick to lose. United Airlines and Frontier Airlines fly the route nonstop in 2LNR's schedule data; the timetable and the reverse direction are below.

Schedule last confirmed September 6, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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Nonstop flights a week

638 mi

Nonstop distance

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Tucson to Denver flight schedule

Scheduled nonstop departures for TUS to DEN, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Scheduled nonstop departures from Tucson (TUS) to Denver (DEN)
Date	Flight	Airline	Departs TUS	Arrives DEN	Duration	Aircraft
Tue, Sep 8	UA 1540	United Airlines	05:30	08:27	1h 57m	738
Tue, Sep 8	UA 2418	United Airlines	05:45	08:38	1h 53m	320
Tue, Sep 8	UA 1656	United Airlines	09:15	12:13	1h 58m	319
Tue, Sep 8	UA 2671	United Airlines	13:29	16:32	2h 3m	738
Wed, Sep 9	UA 1540	United Airlines	05:30	08:27	1h 57m	738
Wed, Sep 9	UA 2418	United Airlines	05:45	08:38	1h 53m	320
Wed, Sep 9	UA 1656	United Airlines	09:15	12:13	1h 58m	319
Wed, Sep 9	UA 2671	United Airlines	13:29	16:32	2h 3m	738
Thu, Sep 10	UA 1540	United Airlines	05:30	08:27	1h 57m	738
Thu, Sep 10	UA 2418	United Airlines	05:45	08:38	1h 53m	320
Thu, Sep 10	UA 1656	United Airlines	09:15	12:13	1h 58m	319
Thu, Sep 10	UA 2671	United Airlines	13:29	16:32	2h 3m	738
Fri, Sep 11	UA 1540	United Airlines	05:30	08:27	1h 57m	738
Fri, Sep 11	UA 2418	United Airlines	05:45	08:38	1h 53m	320
Fri, Sep 11	UA 1656	United Airlines	09:15	12:13	1h 58m	319
Fri, Sep 11	UA 2671	United Airlines	13:29	16:32	2h 3m	738
Sat, Sep 12	UA 1540	United Airlines	05:30	08:27	1h 57m	738
Sat, Sep 12	UA 2418	United Airlines	05:45	08:38	1h 53m	320
Sat, Sep 12	UA 1656	United Airlines	09:15	12:13	1h 58m	319
Sat, Sep 12	UA 2671	United Airlines	13:29	16:32	2h 3m	738
Sun, Sep 13	UA 1540	United Airlines	05:30	08:27	1h 57m	738
Sun, Sep 13	UA 2418	United Airlines	05:45	08:38	1h 53m	320
Sun, Sep 13	UA 1656	United Airlines	09:15	12:13	1h 58m	319
Sun, Sep 13	UA 2671	United Airlines	13:29	16:32	2h 3m	738
Mon, Sep 14	UA 1540	United Airlines	05:30	08:27	1h 57m	738
Mon, Sep 14	UA 2418	United Airlines	05:45	08:38	1h 53m	320
Mon, Sep 14	UA 1656	United Airlines	09:15	12:13	1h 58m	319
Mon, Sep 14	UA 2671	United Airlines	13:29	16:32	2h 3m	738

Showing all 28 scheduled TUS to DEN departures across the next 7 days with service. 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 has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every TUS to DEN date on the interactive map

The full TUS to DEN nonstop schedule

United Airlines and Frontier Airlines fly the route nonstop in 2LNR's schedule data. This page carries the full TUS to DEN nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See real availability

Confirmed upgrade and award seats on each TUS to DEN departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See TUS to DEN on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Tucson to Denver nonstop

Carriers operating TUS to DEN nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See TUS to DEN on the interactive map →

Frequently asked questions about TUS to DEN

How far is Denver from Tucson?

TUS to DEN covers about 638 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.

Which airlines fly nonstop from TUS to DEN?

United Airlines and Frontier Airlines fly the route nonstop. None of them is a carrier 2LNR reads inventory for, so this page carries the TUS to DEN schedule rather than a space claim.

How many flights a week are there from TUS to DEN?

About 34 nonstop flights a week run between Tucson and Denver in the current schedule, operated by United Airlines and Frontier Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.

What time do flights from TUS to DEN depart?

Scheduled TUS to DEN nonstops in the next 7 days with service leave between 05:30 and 13:29, local time at Tucson. The schedule table on this page lists every departure by date, with its arrival time and aircraft.

Does 2LNR show upgrade or award space on TUS to DEN?

Not on this route: none of United Airlines and Frontier Airlines is a carrier 2LNR reads inventory for. The page carries the full TUS to DEN nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full TUS to DEN nonstop schedule

Every scheduled departure on this route, with who flies it. On the routes 2LNR does read inventory for, upgrade and award space shows by date, the next 14 days free on every product and the full horizon on Pro.

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