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Denver (DEN) to Tucson (TUS)

639mi
1,029 km555 nm

Flight time

≈ 2h 05m

Bearing

215° SW

Denver (DEN) to Tucson (TUS) is 639 miles (1,029 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.

Route map: DEN → TUSDENTUS

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What actually flies DEN–TUS

US DOT T-100 · filed data

In April 2026, Southwest Airlines operated the most departures, one of 4 carriers flying nonstop DEN–TUS; the Embraer E175 was the most common aircraft at 34% of departures; flights ran 80% full.

Departures

529

April 2026

Seats

68,890

both directions

Passengers

54,979

both directions

Load factor

79.8%

passengers ÷ seats

Who flies DEN–TUS?

Southwest Airlines operated the most nonstop DEN–TUS departures in April 2026 (212), one of 4 carriers on the route.

  • WN

    Southwest Airlines

    212 departures · 33,566 seats

    78.2%

    Load

  • OO

    SkyWest Airlines

    190 departures · 13,786 seats

    80.0%

    Load

  • UA

    United Airlines

    119 departures · 19,746 seats

    84.2%

    Load

  • F9

    Frontier Airlines

    8 departures · 1,792 seats

    60.7%

    Load

What plane flies DEN–TUS?

In April 2026, the Embraer E175 flew 34% of DEN–TUS departures — more than any other aircraft type.

How has DEN–TUS traffic changed?

Nonstop DEN–TUS departures fell from 545 in May 2025 to 529 in April 2026.

Monthly nonstop DEN–TUS traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.

  • May 2025

    545 departures · 56,547 passengers

    77.8%

    Load

  • June 2025

    379 departures · 38,314 passengers

    82.0%

    Load

  • July 2025

    327 departures · 36,592 passengers

    80.8%

    Load

  • August 2025

    388 departures · 40,950 passengers

    79.5%

    Load

  • September 2025

    392 departures · 47,541 passengers

    77.3%

    Load

  • October 2025

    518 departures · 61,178 passengers

    81.1%

    Load

  • November 2025

    519 departures · 53,198 passengers

    73.5%

    Load

  • December 2025

    541 departures · 54,275 passengers

    71.0%

    Load

  • January 2026

    511 departures · 48,803 passengers

    69.5%

    Load

  • February 2026

    498 departures · 54,414 passengers

    79.3%

    Load

  • March 2026

    556 departures · 65,608 passengers

    84.0%

    Load

  • April 2026

    529 departures · 54,979 passengers

    79.8%

    Load

By direction

The DOT files each direction separately — they rarely match.

TUS → DEN

83.4% full

268 departures · 28,822 passengers

DEN → TUS

76.2% full

261 departures · 26,157 passengers

Nonstop DEN–TUS traffic has been filed with the US DOT since 2025.

Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.

The airports

DEN

Denver

US

Denver International Airport

Coordinates

39.86°N, 104.67°W

Hemisphere

N · W

TUS

Tucson

US

Tucson International Airport

Coordinates

32.12°N, 110.94°W

Hemisphere

N · W

Frequently asked

How far is Denver (DEN) from Tucson (TUS)?

DEN to TUS is 639 miles (1,029 km / 555 nautical miles) measured great-circle — the shortest path over the surface of the Earth.

How long is the flight from DEN to TUS?

A nonstop covers the 639-mile great-circle distance in roughly 2h 05m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.

What plane flies DEN–TUS?

In April 2026, the Embraer E175 flew the largest share of departures (34.2%), followed by the Boeing 737-800 (22.5%).

What mileage do I earn flying DEN–TUS?

Distance-based programs credit off the 639-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.

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