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361 km · Domestic

Washington Dulles (IAD) – Raleigh-Durham (RDU)

In July 2026, 162 flights operated between Washington Dulles and Raleigh-Durham (both directions), and 75.9% 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
January129175▲ 35.7%
February84180▲ 114.3%
March144228▲ 58.3%
April177226▲ 27.7%
May282224▼ 20.6%
June248170▼ 31.5%
July148162▲ 9.5%
August214––
September277––
October238–in progress
November234––
December240––
Year to date (Jan–Jul)1,2121,365▲ 12.6%

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
January90.7%89.1%▼ 1.8%
February94.0%91.1%▼ 3.1%
March91.7%81.1%▼ 11.6%
April92.1%89.4%▼ 2.9%
May81.9%89.7%▲ 9.5%
June81.9%83.5%▲ 2.0%
July85.1%75.9%▼ 10.8%
August89.3%––
September90.6%––
October89.5%–in progress
November92.3%––
December79.2%––
Year-to-date average (Jan–Jul)88.2%85.7%▼ 2.9%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January911▲ 22.2%
February03–
March02–
April00–
May40▼ 100.0%
June72▼ 71.4%
July910▲ 11.1%
August1––
September2––
October0–in progress
November2––
December0––
Year to date (Jan–Jul)2928▼ 3.4%

Airlines on this route

  1. United Airlines 75.8%
  2. Republic Airways 24.2%

Oct 1, 2024 – Jul 31, 2026

By direction

IAD → RDU

Scheduled flights
2,173
Flights operated
2,143
Cancelled
30 · 1.4%
On-time departures
86.1%

RDU → IAD

Scheduled flights
2,171
Flights operated
2,139
Cancelled
32 · 1.5%
On-time departures
89.2%

IAD → RDU and RDU → IAD counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 3,292 75.8% 89.0% 38
Republic Airways YX 1,052 24.2% 83.3% 24

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 delay08:00–09:00-0.0min · 527 recorded · 526 measured
Gap to highest-delay hour19.3min08:00 ↔ 17:00
Recorded flights4,344IAD–RDU

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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 94.7% · 554 recorded · 543 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 92.4% · 527 recorded · 526 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · 90.3% · 572 recorded · 568 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 88.5% · 371 recorded · 365 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 196 recorded · 194 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 91 recorded · 88 measured · Source: the US BTS 15:00 · 85.5% · 477 recorded · 469 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 80.4% · 526 recorded · 519 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 19:00 · 83.0% · 358 recorded · 352 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 119 recorded · 119 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · 83.8% · 552 recorded · 538 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 0.1 min · 554 recorded · 543 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · -0.0 min · 527 recorded · 526 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · 0.9 min · 572 recorded · 568 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 3.3 min · 371 recorded · 365 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 196 recorded · 194 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 91 recorded · 88 measured · Source: the US BTS 15:00 · 9.4 min · 477 recorded · 469 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 19.2 min · 526 recorded · 519 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 19:00 · 11.6 min · 358 recorded · 352 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 119 recorded · 119 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · 9.3 min · 552 recorded · 538 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 554 · 554 recorded · 543 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 527 · 527 recorded · 526 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · 572 · 572 recorded · 568 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 371 · 371 recorded · 365 measured · Source: the US BTS 13:00 · 196 · 196 recorded · 194 measured · Source: the US BTS 14:00 · 91 · 91 recorded · 88 measured · Source: the US BTS 15:00 · 477 · 477 recorded · 469 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 526 · 526 recorded · 519 measured · Source: the US BTS 18:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 19:00 · 358 · 358 recorded · 352 measured · Source: the US BTS 20:00 · 119 · 119 recorded · 119 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · 552 · 552 recorded · 538 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———
05:00No observations———
06:0094.7%0.1 min543554
07:00No observations———
08:0092.4%-0.0 min526527
09:00No observations———
10:0090.3%0.9 min568572
11:00No observations———
12:0088.5%3.3 min365371
13:00Fewer than 200 measured departures—194196
14:00Fewer than 200 measured departures—8891
15:0085.5%9.4 min469477
16:00No observations———
17:0080.4%19.2 min519526
18:00Fewer than 200 measured departures—11
19:0083.0%11.6 min352358
20:00Fewer than 200 measured departures—119119
21:00No observations———
22:0083.8%9.3 min538552
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 84.2% · 638 recorded · 626 measured · Source: the US BTS Tuesday · 91.5% · 633 recorded · 625 measured · Source: the US BTS Wednesday · 88.7% · 642 recorded · 639 measured · Source: the US BTS Thursday · 87.0% · 651 recorded · 640 measured · Source: the US BTS Friday · 86.1% · 650 recorded · 642 measured · Source: the US BTS Saturday · 90.8% · 485 recorded · 480 measured · Source: the US BTS Sunday · 85.7% · 645 recorded · 630 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 · 9.2 min · 638 recorded · 626 measured · Source: the US BTS Tuesday · 3.3 min · 633 recorded · 625 measured · Source: the US BTS Wednesday · 6.6 min · 642 recorded · 639 measured · Source: the US BTS Thursday · 4.7 min · 651 recorded · 640 measured · Source: the US BTS Friday · 9.5 min · 650 recorded · 642 measured · Source: the US BTS Saturday · 3.1 min · 485 recorded · 480 measured · Source: the US BTS Sunday · 8.4 min · 645 recorded · 630 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 · 638 · 638 recorded · 626 measured · Source: the US BTS Tuesday · 633 · 633 recorded · 625 measured · Source: the US BTS Wednesday · 642 · 642 recorded · 639 measured · Source: the US BTS Thursday · 651 · 651 recorded · 640 measured · Source: the US BTS Friday · 650 · 650 recorded · 642 measured · Source: the US BTS Saturday · 485 · 485 recorded · 480 measured · Source: the US BTS Sunday · 645 · 645 recorded · 630 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday84.2%9.2 min626638
Tuesday91.5%3.3 min625633
Wednesday88.7%6.6 min639642
Thursday87.0%4.7 min640651
Friday86.1%9.5 min642650
Saturday90.8%3.1 min480485
Sunday85.7%8.4 min630645

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 · 89.8% · 324 recorded · 304 measured · Source: the US BTS Feb · 92.1% · 267 recorded · 264 measured · Source: the US BTS Mar · 85.2% · 374 recorded · 372 measured · Source: the US BTS Apr · 90.6% · 403 recorded · 403 measured · Source: the US BTS May · 85.4% · 510 recorded · 506 measured · Source: the US BTS Jun · 82.5% · 427 recorded · 418 measured · Source: the US BTS Jul · 80.3% · 329 recorded · 310 measured · Source: the US BTS Aug · 89.3% · 215 recorded · 214 measured · Source: the US BTS Sep · 90.6% · 279 recorded · 277 measured · Source: the US BTS Oct · 91.4% · 338 recorded · 338 measured · Source: the US BTS Nov · 92.9% · 464 recorded · 462 measured · Source: the US BTS Dec · 84.1% · 414 recorded · 414 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
Jan · 9.7 min · 324 recorded · 304 measured · Source: the US BTS Feb · 6.1 min · 267 recorded · 264 measured · Source: the US BTS Mar · 8.6 min · 374 recorded · 372 measured · Source: the US BTS Apr · 1.3 min · 403 recorded · 403 measured · Source: the US BTS May · 9.6 min · 510 recorded · 506 measured · Source: the US BTS Jun · 13.7 min · 427 recorded · 418 measured · Source: the US BTS Jul · 15.8 min · 329 recorded · 310 measured · Source: the US BTS Aug · 3.1 min · 215 recorded · 214 measured · Source: the US BTS Sep · 1.8 min · 279 recorded · 277 measured · Source: the US BTS Oct · 0.9 min · 338 recorded · 338 measured · Source: the US BTS Nov · 0.6 min · 464 recorded · 462 measured · Source: the US BTS Dec · 5.9 min · 414 recorded · 414 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 · 324 · 324 recorded · 304 measured · Source: the US BTS Feb · 267 · 267 recorded · 264 measured · Source: the US BTS Mar · 374 · 374 recorded · 372 measured · Source: the US BTS Apr · 403 · 403 recorded · 403 measured · Source: the US BTS May · 510 · 510 recorded · 506 measured · Source: the US BTS Jun · 427 · 427 recorded · 418 measured · Source: the US BTS Jul · 329 · 329 recorded · 310 measured · Source: the US BTS Aug · 215 · 215 recorded · 214 measured · Source: the US BTS Sep · 279 · 279 recorded · 277 measured · Source: the US BTS Oct · 338 · 338 recorded · 338 measured · Source: the US BTS Nov · 464 · 464 recorded · 462 measured · Source: the US BTS Dec · 414 · 414 recorded · 414 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan89.8%9.7 min304324
Feb92.1%6.1 min264267
Mar85.2%8.6 min372374
Apr90.6%1.3 min403403
May85.4%9.6 min506510
Jun82.5%13.7 min418427
Jul80.3%15.8 min310329
Aug89.3%3.1 min214215
Sep90.6%1.8 min277279
Oct91.4%0.9 min338338
Nov92.9%0.6 min462464
Dec84.1%5.9 min414414

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 86.4% 3,752
  • Delayed >15 min 12.2% 530
  • Cancelled 1.4% 62
  • 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

29
29 of 29
Flight numbersBy direction DeparturesOn time
UA2163 RDU → IAD 411 92.4%
UA1348 IAD → RDU 349 94.0%
UA1322 IAD → RDU 318 83.5%
UA2382 IAD → RDU 288 82.0%
UA2463 RDU → IAD 265 82.5%
UA1357 IAD → RDU 233 86.5%
UA1789 RDU → IAD 167 96.3%
UA689 RDU → IAD 164 89.6%
UA1535 RDU → IAD 149 86.5%
UA1257 RDU → IAD 143 95.7%
YX3616 RDU → IAD 88 87.5%
YX3643 IAD → RDU 88 83.0%
UA1536 IAD → RDU 87 94.3%
YX3624 IAD → RDU 81 72.7%
UA1502 RDU → IAD 78 85.9%
UA1370 IAD → RDU 73 90.0%
YX3515 IAD → RDU 69 94.0%
UA2642 RDU → IAD 66 83.3%
UA1685 IAD → RDU 63 90.3%
YX3520 RDU → IAD 63 73.3%
YX3666 RDU → IAD 58 96.5%
YX3685 IAD → RDU 58 87.5%
UA2653 RDU → IAD 51 88.0%
UA1964 RDU → IAD 47 95.7%
YX3462 RDU → IAD 45 88.9%
UA2288 RDU → IAD 37 94.6%
UA529 IAD → RDU 37 77.8%
YX3447 RDU → IAD 30 75.0%
YX3625 IAD → RDU 30 50.0%

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 +9.5% 10 75.9%
June 2026 170 −31.5% 2 83.5%
May 2026 224 −20.6% 0 89.7%
April 2026 226 +27.7% 0 89.4%
March 2026 228 +58.3% 2 81.1%
February 2026 180 +114.3% 3 91.1%
January 2026 175 +35.7% 11 89.1%
December 2025 240 +37.9% 0 79.2%
November 2025 234 +2.6% 2 92.3%
October 2025 238 +138.0% 0 89.5%
September 2025 277 2 90.6%
August 2025 214 1 89.3%
July 2025 148 9 85.1%
June 2025 248 7 81.9%
May 2025 282 4 81.9%
April 2025 177 0 92.1%
March 2025 144 0 91.7%
February 2025 84 0 94.0%
January 2025 129 9 90.7%
December 2024 174 0 90.8%
November 2024 228 0 93.4%
October 2024 100 0 96.0%

How to read this chart

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