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Route · TUS → DEN · 2020–2025 BTS data

Tucson to Denver

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), TUS to DEN (Tucson to Denver) ranks #721 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

84.4%
On-time
+5.4 pts
vs US avg
75 min
Delay when late
13,748
Flights
#721 of 4927
Corpus placement

Cancelled

0.7%

Best Month

Sep 2024 95%

Worst Month

May 2025 65%

Distance

639 mi

Carriers

22

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 271 47 1 1 WN,F9,UA,OO
Nov 2025 264 24 8 0 OO,UA,F9,WN
Oct 2025 256 34 1 0 OO,UA,WN,F9
Sep 2025 193 34 2 0 UA,WN,OO,F9
Aug 2025 191 51 0 2 OO,WN,F9,UA
Jul 2025 164 49 2 1 OO,UA,WN,F9
Jun 2025 189 59 4 0 OO,UA,WN,F9
May 2025 271 95 1 1 OO,UA,WN,F9
Apr 2025 276 72 2 0 F9,OO,UA,WN
Mar 2025 283 28 0 2 OO,UA,WN,F9
Feb 2025 237 28 0 0 OO,UA,WN
Jan 2025 254 31 1 0 OO,UA,WN
Dec 2024 263 23 0 0 OO,UA,WN
Nov 2024 253 37 3 0 OO,UA,WN
Oct 2024 237 19 0 1 UA,OO,WN
Sep 2024 185 9 0 0 WN,OO,UA
Aug 2024 164 24 0 0 WN,OO,UA
Jul 2024 155 35 0 1 OO,WN
Jun 2024 178 46 0 0 OO,WN
May 2024 234 51 1 0 OO,UA,WN
Apr 2024 235 32 0 0 OO,UA,WN
Mar 2024 210 31 5 0 OO,UA,WN
Feb 2024 202 45 0 0 OO,UA,WN
Jan 2024 216 25 6 0 WN,OO,UA

TUS–DEN seasonal on-time pattern

Best: November (89.2%) · weakest: May (77.1%)

75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 86.4%

Strongest calendar month

November

89.2% on-time · ~209 flights/mo

Busiest calendar month

March

~217 flights/mo avg

Weakest calendar month

May

77.1% on-time · ~195 flights/mo

Cancellation Rate

0.7%

37 of 5,381 flights

Diversion Rate

0.2%

9 of 5,381 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

TUS - Tucson

Full on-time, delay-cause, and seasonal performance for Tucson, AZ.

TUS on-time profile

DEN - Denver

Full on-time, delay-cause, and seasonal performance for Denver, CO.

DEN on-time profile

Compare the two airports

See TUS and DEN side by side on delays, cancellations, and reliability.

Compare TUS vs DEN

Origin-hub reliability standing

Mid-pack among TUS departures

From TUS, this corridor sits with 7 other 75–85% on-time routes out of 15 tracked departures, not the hub's reliability leaders (8 at ≥85%) and not the softest ( 0 below 75%). Destination: Denver · fleet on-time rank #1460 of 4927.

What the Data Says About TUS to DEN

Bureau of Transportation Statistics records show Tucson to Denver (TUS to DEN) running a 84.4% on-time rate over 13,748 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 75.3 minutes. The 639-mile corridor is served by 22 carriers, and over the last 24 months 0.7% of 5,381 flights were cancelled, 0.2% diverted.

The monthly split is wide on this route: Sep 2024 posted the strongest performance at 95% on-time, while May 2025 came in at just 65% - a 30-point swing worth factoring into travel timing.

On the multi-year calendar, TUS–DEN peaks in November at 89.2% on-time while March carries the heaviest traffic (~217 flights per month) ; the softest month is May at 77.1%, a 12.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does TUS to DEN rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, TUS to DEN ranks #721 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from TUS to DEN? ▼
Flights from Tucson to Denver have a 84.4% on-time rate based on 13,748 flights. The average delay is 75.3 minutes. The best recent month was Sep 2024 with 95% on-time.
What is the cancellation rate for TUS to DEN? ▼
Over the last 24 months, 0.7% of flights on this route were cancelled (37 of 5,381 flights) and 0.2% were diverted.
How far is the flight from TUS to DEN? ▼
The flight distance from Tucson (TUS) to Denver (DEN) is approximately 639 miles. This route is served by 22 carriers.
When is the best time to fly from TUS to DEN? ▼
The best recent month for on-time performance was Sep 2024 (95% on-time). The worst was May 2025 (65% on-time). Consider booking during months with historically better performance.

Airports on this route

TUS Airport

Tucson
DEN Airport

Denver
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using TUS–DEN data

TUS–DEN runs 5.4 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare TUS and DEN airport profiles: delay causes and top routes differ even on the same corridor. TUS airport
  • If your dates flex, November (89.2% on-time) beats May (77.1%) on this corridor. Seasonal chart
  • 4 other routes post a similar 84.4% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.