Tucson International Airport
Tucson, United StatesTUS / KTUS
Regional airport · 40 direct destinations · 2 runways · longest runway 10,997 ft
69 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Tucson → Denver
TUS
TucsonTucson International Airport
TucsonTucson International AirportDENDenverDenver International Airport
DenverDenver International Airport- Distance
- 639 mi
- Estimated flight time
- ~1h 45m
Denver is currently 1 hour ahead of Tucson.
Observed nonstop
How often does this route fly?
Frequency
Several times a day
On average around 8 flights a day, observed from October 2025 to September 2026.
- 8
- flights per day
- 9
- busiest month · Mar
- 5
- quietest month · Jun
- 1 hr 29 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 8Jan2026
- 8Feb
- 9Mar
- 8Apr
- 7May
- 5Jun
- 5Jul
- 5Aug
- 6Sep
- 8Oct2025
- 8Nov
- 8Dec
Airlines
Who flies it
Southwest Airlinesall year
United Airlinesall year
SkyWest Airlinesall year
Frontier Airlineswinter
Through the day
Departure times
Local time in Tucson. Most departures between 05:00 and 08:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 7.6Mon
- 6.4Tue
- 6.5Wed
- 6.9Thu
- 7.4Fri
- 6.7Sat
- 7.5Sun
Fleet
Aircraft observed
- Boeing 737-800B73824%
- Boeing 737-700B73721%
- Boeing 737 MAX 8B38M16%
- Embraer 175E75L15%
- Airbus A319A3196%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 8 | 243 |
|
| February 2026 | 8 | 234 |
|
| March 2026 | 9 | 260 |
|
| April 2026 | 8 | 242 |
|
| May 2026 | 7 | 211 |
|
| June 2026 | 5 | 139 |
|
| July 2026 | 5 | 143 |
|
| August 2026 | 5 | 159 |
|
| September 2026 | 6 | 179 |
|
| October 2025 | 8 | 242 |
|
| November 2025 | 8 | 248 |
|
| December 2025 | 8 | 234 |
|
Airlines observed on this route
From observed callsign routes on TUS-DEN - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Tucson: 40.
- Direct destinations observed from Denver: 203.
The airports on this route
Denver International Airport
Denver, United StatesDEN / KDEN
International hub · 203 direct destinations · 6 runways · longest runway 16,001 ft
36 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Tucson to Denver
The observed direct connection between Tucson International Airport (TUS) and Denver International Airport (DEN) covers approximately 639 mi. The estimated flight time is around 1h 45m. Frontier Airlines, SkyWest Airlines, Southwest Airlines and United Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Tucson from Denver by air?
- The great-circle distance between Tucson International Airport and Denver International Airport is approximately 639 mi.
- How long is the flight from Tucson to Denver?
- Based on the distance, the estimated flight time is about 1h 45m. This is an estimate, not a schedule.
- Is there a direct connection from Tucson to Denver?
- Yes, a direct connection between TUS and DEN has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Frontier Airlines, SkyWest Airlines, Southwest Airlines and United Airlines.
- How often is there a flight from Tucson to Denver?
- On average around 8 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 2,534 observed flights. Mainly Southwest Airlines, United Airlines, SkyWest Airlines. That is an observation, not a timetable.
- What is the current time difference between Tucson and Denver?
- Denver is currently 1 hour ahead of Tucson.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.