2,369 km · Domestic

Ronald Reagan Washington National (DCA) – Denver (DEN)

In July 2026, 218 flights operated between Ronald Reagan Washington National and Denver (both directions), and 80.3% left on time, according to the US BTS.

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January239222▼ 7.1%
February224208▼ 7.1%
March246226▼ 8.1%
April240216▼ 10.0%
May244232▼ 4.9%
June218220▲ 0.9%
July225218▼ 3.1%
August231––
September220––
October229–in progress
November224––
December228––
Year to date (Jan–Jul)1,6361,542▼ 5.7%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January76.6%81.5%▲ 6.4%
February61.6%84.1%▲ 36.5%
March82.9%76.5%▼ 7.7%
April79.6%84.3%▲ 5.9%
May77.0%89.2%▲ 15.8%
June75.2%81.4%▲ 8.2%
July75.1%80.3%▲ 6.9%
August77.9%––
September82.3%––
October85.6%–in progress
November82.1%––
December81.6%––
Year-to-date average (Jan–Jul)75.4%82.5%▲ 9.3%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January910▲ 11.1%
February00–
March14▲ 300.0%
April02–
May20▼ 100.0%
June00–
July220.0%
August0––
September0––
October1–in progress
November0––
December0––
Year to date (Jan–Jul)1418▲ 28.6%

Airlines on this route

  1. Frontier Airlines 73.7%
  2. United Airlines 26.3%

Oct 1, 2024 – Jul 31, 2026

By direction

DCA → DEN

Scheduled flights
2,494
Flights operated
2,474
Cancelled
20 · 0.8%
On-time departures
81.5%

DEN → DCA

Scheduled flights
2,497
Flights operated
2,482
Cancelled
15 · 0.6%
On-time departures
78.2%

DCA → DEN and DEN → DCA counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Frontier Airlines F9 3,677 73.7% 79.1% 32
United Airlines UA 1,314 26.3% 82.1% 3

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 31, 2026

Lowest average delay06:00–07:00-2.1min · 368 recorded · 366 measured
Gap to highest-delay hour30.5min06:00 ↔ 18:00
Recorded flights4,991DCA–DEN

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00No observations———
06:0093.7%-2.1 min366368
07:0091.7%3.4 min721728
08:00Fewer than 200 measured departures—149150
09:0087.0%7.3 min656657
10:00No observations———
11:0074.1%14.2 min576581
12:00Fewer than 200 measured departures—3030
13:0089.8%0.9 min449452
14:00Fewer than 200 measured departures—133135
15:00No observations———
16:0068.6%22.6 min1,2961,303
17:00No observations———
18:0067.4%28.5 min580587
19:00No observations———
20:00No observations———
21:00No observations———
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday76.5%18.9 min741749
Tuesday81.9%9.0 min631632
Wednesday79.2%10.8 min633633
Thursday75.5%17.2 min735742
Friday78.6%14.4 min743750
Saturday85.7%4.9 min735739
Sunday82.0%11.0 min738746

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

On-time departures Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan79.0%12.8 min461480
Feb72.5%21.9 min432432
Mar79.9%14.0 min472477
Apr81.8%7.8 min456458
May83.0%8.1 min476478
Jun78.3%21.2 min438438
Jul77.7%20.4 min443447
Aug77.9%8.6 min231231
Sep82.3%9.1 min220220
Oct81.0%8.6 min389390
Nov81.8%8.2 min462464
Dec83.2%5.7 min476476

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 79.3% 3,959
  • Delayed >15 min 20.0% 997
  • Cancelled 0.7% 35
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

16
16 of 16
Flight numbersBy direction DeparturesOn time
F99685 DCA → DEN 651 91.6%
F99690 DEN → DCA 651 59.9%
F99687 DCA → DEN 599 89.2%
F99688 DEN → DCA 596 73.6%
F99686 DEN → DCA 593 93.2%
F99689 DCA → DEN 587 67.4%
UA746 DCA → DEN 511 79.8%
UA789 DEN → DCA 225 91.1%
UA1767 DEN → DCA 222 79.7%
UA2104 DCA → DEN 87 64.4%
UA1925 DEN → DCA 54 92.6%
UA1234 DEN → DCA 37 91.9%
UA2420 DEN → DCA 37 78.4%
UA498 DCA → DEN 36 75.0%
UA1222 DEN → DCA 35 91.4%
UA514 DEN → DCA 31 96.8%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 218 −3.1% 2 80.3%
June 2026 220 +0.9% 0 81.4%
May 2026 232 −4.9% 0 89.2%
April 2026 216 −10.0% 2 84.3%
March 2026 226 −8.1% 4 76.5%
February 2026 208 −7.1% 0 84.1%
January 2026 222 −7.1% 10 81.5%
December 2025 228 −8.1% 0 81.6%
November 2025 224 −5.9% 0 82.1%
October 2025 229 +43.1% 1 85.6%
September 2025 220 0 82.3%
August 2025 231 0 77.9%
July 2025 225 2 75.1%
June 2025 218 0 75.2%
May 2025 244 2 77.0%
April 2025 240 0 79.6%
March 2025 246 1 82.9%
February 2025 224 0 61.6%
January 2025 239 9 76.6%
December 2024 248 0 84.7%
November 2024 238 2 81.5%
October 2024 160 0 74.4%

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