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Route · BWI → DEN · 2020–2025 BTS data

Baltimore to Denver

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BWI to DEN (Baltimore to Denver) ranks #545 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

78.5%
On-time
-0.5 pts
vs US avg
62 min
Delay when late
16,251
Flights
#545 of 4927
Corpus placement

Cancelled

1.0%

Best Month

Oct 2024 90%

Worst Month

Dec 2025 63%

Distance

1,491 mi

Carriers

16

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 243 91 2 2 WN,UA
Nov 2025 237 38 2 0 UA,WN
Oct 2025 269 29 0 1 UA,WN,F9
Sep 2025 266 43 0 0 UA,WN,F9
Aug 2025 282 68 1 2 WN,F9,UA
Jul 2025 317 110 9 2 UA,WN,F9
Jun 2025 301 98 2 2 UA,WN,F9
May 2025 243 60 1 2 UA,WN,F9
Apr 2025 230 66 0 0 F9,UA,WN
Mar 2025 241 36 1 0 UA,WN,F9
Feb 2025 185 40 0 0 UA,WN
Jan 2025 210 35 10 0 UA,WN,F9
Dec 2024 247 35 0 1 F9,UA,WN
Nov 2024 249 35 2 0 UA,WN,F9
Oct 2024 277 27 1 0 UA,WN,F9
Sep 2024 268 42 0 0 WN,UA,F9
Aug 2024 282 93 5 4 F9,WN,UA
Jul 2024 321 95 6 0 F9,UA,WN
Jun 2024 305 93 1 1 F9,UA,WN
May 2024 306 93 2 2 F9,UA,WN
Apr 2024 259 79 1 1 F9,UA,WN
Mar 2024 230 43 6 0 UA,WN
Feb 2024 210 30 0 1 UA,WN
Jan 2024 239 47 9 0 F9,WN,UA

BWI–DEN seasonal on-time pattern

Best: November (85.7%) · weakest: June (69.6%)

65%70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 75.6%

Strongest calendar month

November

85.7% on-time · ~224 flights/mo

Busiest calendar month

August

~261 flights/mo avg

Weakest calendar month

June

69.6% on-time · ~231 flights/mo

Cancellation Rate

1.0%

61 of 6,217 flights

Diversion Rate

0.3%

21 of 6,217 flights

Explore origin & destination

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

BWI - Baltimore

Full on-time, delay-cause, and seasonal performance for Baltimore, MD.

BWI 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 BWI and DEN side by side on delays, cancellations, and reliability.

Compare BWI vs DEN

Origin-hub reliability standing

Mid-pack among BWI departures

From BWI, this corridor sits with 53 other 75–85% on-time routes out of 64 tracked departures, not the hub's reliability leaders (0 at ≥85%) and not the softest ( 11 below 75%). Destination: Denver · fleet on-time rank #3667 of 4927.

What the Data Says About BWI to DEN

16,251 tracked flights put the BWI to DEN pairing (Baltimore to Denver) at a 78.5% on-time rate, squarely in line with the wider network. Delays that do occur run 61.7 minutes on average. Across the 1,491-mile route and its 16 carriers, the trailing 24 months show 1.0% cancelled and 0.3% diverted (6,217 flights sampled).

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 90% on-time, while Dec 2025 came in at just 63% - a 28-point swing worth factoring into travel timing.

On the multi-year calendar, BWI–DEN peaks in November at 85.7% on-time while August carries the heaviest traffic (~261 flights per month) ; the softest month is June at 69.6%, a 16.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does BWI to DEN rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, BWI to DEN ranks #545 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 BWI to DEN? ▼
Flights from Baltimore to Denver have a 78.5% on-time rate based on 16,251 flights. The average delay is 61.7 minutes. The best recent month was Oct 2024 with 90% on-time.
What is the cancellation rate for BWI to DEN? ▼
Over the last 24 months, 1.0% of flights on this route were cancelled (61 of 6,217 flights) and 0.3% were diverted.
How far is the flight from BWI to DEN? ▼
The flight distance from Baltimore (BWI) to Denver (DEN) is approximately 1,491 miles. This route is served by 16 carriers.
When is the best time to fly from BWI to DEN? ▼
The best recent month for on-time performance was Oct 2024 (90% on-time). The worst was Dec 2025 (63% on-time). Consider booking during months with historically better performance.

Airports on this route

BWI Airport

Baltimore
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 BWI–DEN data

BWI–DEN is mid-pack at 78.5% on-time; month and carrier mix move more than the corridor headline.

  • Compare BWI and DEN airport profiles: delay causes and top routes differ even on the same corridor. BWI airport
  • If your dates flex, November (85.7% on-time) beats June (69.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 78.5% 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.