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760 km · Domestic

Ronald Reagan Washington National (DCA) – Louisville Muhammad Ali (SDF)

In July 2026, 162 flights operated between Ronald Reagan Washington National and Louisville Muhammad Ali (both directions), and 74.7% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

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
January147145▼ 1.4%
February137155▲ 13.1%
March170177▲ 4.1%
April155179▲ 15.5%
May170179▲ 5.3%
June150159▲ 6.0%
July143162▲ 13.3%
August168––
September179––
October186–in progress
November158––
December117––
Year to date (Jan–Jul)1,0721,156▲ 7.8%

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
January77.6%75.2%▼ 3.1%
February68.6%74.2%▲ 8.2%
March77.1%76.8%▼ 0.4%
April75.5%87.7%▲ 16.2%
May72.9%85.5%▲ 17.3%
June68.0%79.2%▲ 16.5%
July72.0%74.7%▲ 3.8%
August78.0%––
September86.0%––
October86.6%–in progress
November75.3%––
December72.6%––
Year-to-date average (Jan–Jul)73.1%79.0%▲ 8.1%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January1721▲ 23.5%
February2513▼ 48.0%
March65▼ 16.7%
April110.0%
May101▼ 90.0%
June2213▼ 40.9%
July3314▼ 57.6%
August8––
September1––
October0–in progress
November10––
December9––
Year to date (Jan–Jul)11468▼ 40.4%

Airlines on this route

  1. PSA Airlines 55.1%
  2. Republic Airways 43.7%
  3. Envoy Air 0.7%
  4. American Airlines 0.5%

Oct 1, 2024 – Jul 31, 2026

By direction

DCA → SDF

Scheduled flights
1,831
Flights operated
1,712
Cancelled
119 · 6.5%
On-time departures
76.7%

SDF → DCA

Scheduled flights
1,830
Flights operated
1,734
Cancelled
96 · 5.2%
On-time departures
81.4%

DCA → SDF and SDF → DCA counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
PSA Airlines OH 2,016 55.1% 74.8% 154
Republic Airways YX 1,601 43.7% 84.1% 59
Envoy Air MQ 26 0.7% 83.3% 2
American Airlines AA 18 0.5% 83.3% 0

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 delay06:00–07:00-1.3min · 530 recorded · 521 measured
Gap to highest-delay hour35.2min06:00 ↔ 16:00
Recorded flights3,661DCA–SDF

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 67 recorded · 66 measured · Source: the US BTS 06:00 · 94.6% · 530 recorded · 521 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 171 recorded · 164 measured · Source: the US BTS 08:00 · 84.6% · 477 recorded · 447 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 35 recorded · 32 measured · Source: the US BTS 10:00 · 80.6% · 222 recorded · 211 measured · Source: the US BTS 11:00 · 79.7% · 395 recorded · 370 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 32 recorded · 32 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 92 recorded · 89 measured · Source: the US BTS 14:00 · 74.8% · 237 recorded · 230 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 43 recorded · 43 measured · Source: the US BTS 16:00 · 59.5% · 261 recorded · 242 measured · Source: the US BTS 17:00 · 71.8% · 229 recorded · 206 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 35 recorded · 35 measured · Source: the US BTS 19:00 · 69.7% · 662 recorded · 603 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 120 recorded · 103 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 26 recorded · 26 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 27 recorded · 26 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 67 recorded · 66 measured · Source: the US BTS 06:00 · -1.3 min · 530 recorded · 521 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 171 recorded · 164 measured · Source: the US BTS 08:00 · 8.0 min · 477 recorded · 447 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 35 recorded · 32 measured · Source: the US BTS 10:00 · 20.5 min · 222 recorded · 211 measured · Source: the US BTS 11:00 · 11.7 min · 395 recorded · 370 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 32 recorded · 32 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 92 recorded · 89 measured · Source: the US BTS 14:00 · 11.9 min · 237 recorded · 230 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 43 recorded · 43 measured · Source: the US BTS 16:00 · 34.0 min · 261 recorded · 242 measured · Source: the US BTS 17:00 · 19.2 min · 229 recorded · 206 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 35 recorded · 35 measured · Source: the US BTS 19:00 · 23.5 min · 662 recorded · 603 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 120 recorded · 103 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 26 recorded · 26 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 27 recorded · 26 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 67 · 67 recorded · 66 measured · Source: the US BTS 06:00 · 530 · 530 recorded · 521 measured · Source: the US BTS 07:00 · 171 · 171 recorded · 164 measured · Source: the US BTS 08:00 · 477 · 477 recorded · 447 measured · Source: the US BTS 09:00 · 35 · 35 recorded · 32 measured · Source: the US BTS 10:00 · 222 · 222 recorded · 211 measured · Source: the US BTS 11:00 · 395 · 395 recorded · 370 measured · Source: the US BTS 12:00 · 32 · 32 recorded · 32 measured · Source: the US BTS 13:00 · 92 · 92 recorded · 89 measured · Source: the US BTS 14:00 · 237 · 237 recorded · 230 measured · Source: the US BTS 15:00 · 43 · 43 recorded · 43 measured · Source: the US BTS 16:00 · 261 · 261 recorded · 242 measured · Source: the US BTS 17:00 · 229 · 229 recorded · 206 measured · Source: the US BTS 18:00 · 35 · 35 recorded · 35 measured · Source: the US BTS 19:00 · 662 · 662 recorded · 603 measured · Source: the US BTS 20:00 · 120 · 120 recorded · 103 measured · Source: the US BTS 21:00 · 26 · 26 recorded · 26 measured · Source: the US BTS 22:00 · 27 · 27 recorded · 26 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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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———
05:00Fewer than 200 measured departures—6667
06:0094.6%-1.3 min521530
07:00Fewer than 200 measured departures—164171
08:0084.6%8.0 min447477
09:00Fewer than 200 measured departures—3235
10:0080.6%20.5 min211222
11:0079.7%11.7 min370395
12:00Fewer than 200 measured departures—3232
13:00Fewer than 200 measured departures—8992
14:0074.8%11.9 min230237
15:00Fewer than 200 measured departures—4343
16:0059.5%34.0 min242261
17:0071.8%19.2 min206229
18:00Fewer than 200 measured departures—3535
19:0069.7%23.5 min603662
20:00Fewer than 200 measured departures—103120
21:00Fewer than 200 measured departures—2626
22:00Fewer than 200 measured departures—2627
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 78.3% · 536 recorded · 507 measured · Source: the US BTS Tuesday · 79.2% · 546 recorded · 520 measured · Source: the US BTS Wednesday · 78.4% · 546 recorded · 514 measured · Source: the US BTS Thursday · 78.4% · 531 recorded · 496 measured · Source: the US BTS Friday · 75.5% · 532 recorded · 502 measured · Source: the US BTS Saturday · 85.9% · 438 recorded · 411 measured · Source: the US BTS Sunday · 79.0% · 532 recorded · 496 measured · Source: the US BTS

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
Monday · 17.1 min · 536 recorded · 507 measured · Source: the US BTS Tuesday · 14.6 min · 546 recorded · 520 measured · Source: the US BTS Wednesday · 14.6 min · 546 recorded · 514 measured · Source: the US BTS Thursday · 14.9 min · 531 recorded · 496 measured · Source: the US BTS Friday · 18.0 min · 532 recorded · 502 measured · Source: the US BTS Saturday · 4.9 min · 438 recorded · 411 measured · Source: the US BTS Sunday · 13.7 min · 532 recorded · 496 measured · Source: the US BTS

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
Monday · 536 · 536 recorded · 507 measured · Source: the US BTS Tuesday · 546 · 546 recorded · 520 measured · Source: the US BTS Wednesday · 546 · 546 recorded · 514 measured · Source: the US BTS Thursday · 531 · 531 recorded · 496 measured · Source: the US BTS Friday · 532 · 532 recorded · 502 measured · Source: the US BTS Saturday · 438 · 438 recorded · 411 measured · Source: the US BTS Sunday · 532 · 532 recorded · 496 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday78.3%17.1 min507536
Tuesday79.2%14.6 min520546
Wednesday78.4%14.6 min514546
Thursday78.4%14.9 min496531
Friday75.5%18.0 min502532
Saturday85.9%4.9 min411438
Sunday79.0%13.7 min496532

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
Jan · 76.4% · 330 recorded · 292 measured · Source: the US BTS Feb · 71.6% · 330 recorded · 292 measured · Source: the US BTS Mar · 77.0% · 358 recorded · 347 measured · Source: the US BTS Apr · 82.0% · 336 recorded · 334 measured · Source: the US BTS May · 79.4% · 360 recorded · 349 measured · Source: the US BTS Jun · 73.8% · 344 recorded · 309 measured · Source: the US BTS Jul · 73.4% · 352 recorded · 305 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 176 recorded · 168 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 180 recorded · 179 measured · Source: the US BTS Oct · 89.0% · 300 recorded · 300 measured · Source: the US BTS Nov · 84.0% · 334 recorded · 324 measured · Source: the US BTS Dec · 80.6% · 261 recorded · 247 measured · Source: the US BTS

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Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 16.1 min · 330 recorded · 292 measured · Source: the US BTS Feb · 18.1 min · 330 recorded · 292 measured · Source: the US BTS Mar · 11.1 min · 358 recorded · 347 measured · Source: the US BTS Apr · 10.2 min · 336 recorded · 334 measured · Source: the US BTS May · 18.5 min · 360 recorded · 349 measured · Source: the US BTS Jun · 31.1 min · 344 recorded · 309 measured · Source: the US BTS Jul · 18.3 min · 352 recorded · 305 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 176 recorded · 168 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 180 recorded · 179 measured · Source: the US BTS Oct · 1.2 min · 300 recorded · 300 measured · Source: the US BTS Nov · 13.0 min · 334 recorded · 324 measured · Source: the US BTS Dec · 11.8 min · 261 recorded · 247 measured · Source: the US BTS

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
Jan · 330 · 330 recorded · 292 measured · Source: the US BTS Feb · 330 · 330 recorded · 292 measured · Source: the US BTS Mar · 358 · 358 recorded · 347 measured · Source: the US BTS Apr · 336 · 336 recorded · 334 measured · Source: the US BTS May · 360 · 360 recorded · 349 measured · Source: the US BTS Jun · 344 · 344 recorded · 309 measured · Source: the US BTS Jul · 352 · 352 recorded · 305 measured · Source: the US BTS Aug · 176 · 176 recorded · 168 measured · Source: the US BTS Sep · 180 · 180 recorded · 179 measured · Source: the US BTS Oct · 300 · 300 recorded · 300 measured · Source: the US BTS Nov · 334 · 334 recorded · 324 measured · Source: the US BTS Dec · 261 · 261 recorded · 247 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan76.4%16.1 min292330
Feb71.6%18.1 min292330
Mar77.0%11.1 min347358
Apr82.0%10.2 min334336
May79.4%18.5 min349360
Jun73.8%31.1 min309344
Jul73.4%18.3 min305352
AugFewer than 200 measured departures—168176
SepFewer than 200 measured departures—179180
Oct89.0%1.2 min300300
Nov84.0%13.0 min324334
Dec80.6%11.8 min247261

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 74.4% 2,725
  • Delayed >15 min 19.7% 721
  • Cancelled 5.9% 215
  • 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

25
25 of 25
Flight numbersBy direction DeparturesOn time
YX4549 SDF → DCA 657 94.9%
YX4672 DCA → SDF 574 75.3%
OH5602 DCA → SDF 401 82.0%
OH5602 SDF → DCA 398 77.3%
OH5674 SDF → DCA 87 72.0%
OH5057 SDF → DCA 77 68.6%
OH5057 DCA → SDF 74 72.1%
OH5400 SDF → DCA 70 79.0%
OH5189 SDF → DCA 61 57.9%
OH5189 DCA → SDF 61 65.5%
OH5400 DCA → SDF 53 84.8%
OH5268 DCA → SDF 52 30.6%
OH5268 SDF → DCA 52 36.1%
OH5674 DCA → SDF 45 69.8%
YX4515 DCA → SDF 44 84.1%
YX4753 SDF → DCA 44 78.6%
YX4753 DCA → SDF 44 79.6%
OH5250 SDF → DCA 42 42.9%
OH5461 DCA → SDF 42 64.3%
OH5440 DCA → SDF 41 100.0%
OH5440 SDF → DCA 41 97.6%
OH5203 DCA → SDF 33 84.9%
OH5203 SDF → DCA 33 87.9%
YX4350 DCA → SDF 31 45.2%
OH5227 DCA → SDF 30 82.1%

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 162 +13.3% 14 74.7%
June 2026 159 +6.0% 13 79.2%
May 2026 179 +5.3% 1 85.5%
April 2026 179 +15.5% 1 87.7%
March 2026 177 +4.1% 5 76.8%
February 2026 155 +13.1% 13 74.2%
January 2026 145 −1.4% 21 75.2%
December 2025 117 −10.0% 9 72.6%
November 2025 158 −4.8% 10 75.3%
October 2025 186 +63.2% 0 86.6%
September 2025 179 1 86.0%
August 2025 168 8 78.0%
July 2025 143 33 72.0%
June 2025 150 22 68.0%
May 2025 170 10 72.9%
April 2025 155 1 75.5%
March 2025 170 6 77.1%
February 2025 137 25 68.6%
January 2025 147 17 77.6%
December 2024 130 5 87.7%
November 2024 166 0 92.2%
October 2024 114 0 93.0%

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