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712 km · Domestic

Charleston (CHS) – Washington Dulles (IAD)

In July 2026, 123 flights operated between Charleston and Washington Dulles (both directions), and 83.7% 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
January108104▼ 3.7%
February110106▼ 3.6%
March135180▲ 33.3%
April153155▲ 1.3%
May130163▲ 25.4%
June120119▼ 0.8%
July122123▲ 0.8%
August116––
September100––
October102–in progress
November121––
December113––
Year to date (Jan–Jul)878950▲ 8.2%

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
January87.0%78.8%▼ 9.4%
February94.5%92.5%▼ 2.1%
March89.6%83.3%▼ 7.0%
April93.5%87.7%▼ 6.2%
May92.3%90.2%▼ 2.3%
June93.3%95.8%▲ 2.7%
July85.2%83.7%▼ 1.8%
August90.5%––
September95.0%––
October91.2%–in progress
November88.4%––
December77.0%––
Year-to-date average (Jan–Jul)90.8%87.4%▼ 3.7%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January1610▼ 37.5%
February20▼ 100.0%
March02–
April00–
May10▼ 100.0%
June01–
July41▼ 75.0%
August0––
September0––
October0–in progress
November1––
December1––
Year to date (Jan–Jul)2314▼ 39.1%

Airlines on this route

  1. United Airlines 51.3%
  2. Republic Airways 48.7%

Oct 1, 2024 – Jul 31, 2026

By direction

CHS → IAD

Scheduled flights
1,369
Flights operated
1,349
Cancelled
20 · 1.5%
On-time departures
88.4%

IAD → CHS

Scheduled flights
1,372
Flights operated
1,353
Cancelled
19 · 1.4%
On-time departures
90.4%

CHS → IAD and IAD → CHS counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 1,405 51.3% 91.5% 8
Republic Airways YX 1,336 48.7% 87.2% 31

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 delay08:00–09:00-1.9min · 574 recorded · 570 measured
Gap to highest-delay hour13.3min08:00 ↔ 14:00
Recorded flights2,741CHS–IAD

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 · Fewer than 200 measured departures · 60 recorded · 60 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 95.3% · 574 recorded · 570 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 77 recorded · 76 measured · Source: the US BTS 10:00 · 94.5% · 497 recorded · 493 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 87.5% · 325 recorded · 319 measured · Source: the US BTS 13:00 · 91.5% · 323 recorded · 318 measured · Source: the US BTS 14:00 · 84.1% · 656 recorded · 646 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 92 recorded · 88 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 83 recorded · 78 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 54 recorded · 54 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 · Fewer than 200 measured departures · 60 recorded · 60 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · -1.9 min · 574 recorded · 570 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 77 recorded · 76 measured · Source: the US BTS 10:00 · -0.4 min · 497 recorded · 493 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 2.4 min · 325 recorded · 319 measured · Source: the US BTS 13:00 · 6.1 min · 323 recorded · 318 measured · Source: the US BTS 14:00 · 11.3 min · 656 recorded · 646 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 92 recorded · 88 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 83 recorded · 78 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 54 recorded · 54 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 · 60 · 60 recorded · 60 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 574 · 574 recorded · 570 measured · Source: the US BTS 09:00 · 77 · 77 recorded · 76 measured · Source: the US BTS 10:00 · 497 · 497 recorded · 493 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 325 · 325 recorded · 319 measured · Source: the US BTS 13:00 · 323 · 323 recorded · 318 measured · Source: the US BTS 14:00 · 656 · 656 recorded · 646 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 92 · 92 recorded · 88 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · 83 · 83 recorded · 78 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · 54 · 54 recorded · 54 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.

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———
06:00Fewer than 200 measured departures—6060
07:00No observations———
08:0095.3%-1.9 min570574
09:00Fewer than 200 measured departures—7677
10:0094.5%-0.4 min493497
11:00No observations———
12:0087.5%2.4 min319325
13:0091.5%6.1 min318323
14:0084.1%11.3 min646656
15:00No observations———
16:00No observations———
17:00Fewer than 200 measured departures—8892
18:00No observations———
19:00Fewer than 200 measured departures—7883
20:00No observations———
21:00No observations———
22:00Fewer than 200 measured departures—5454
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 91.7% · 408 recorded · 399 measured · Source: the US BTS Tuesday · 90.1% · 377 recorded · 375 measured · Source: the US BTS Wednesday · 92.2% · 386 recorded · 382 measured · Source: the US BTS Thursday · 91.4% · 391 recorded · 383 measured · Source: the US BTS Friday · 86.9% · 390 recorded · 388 measured · Source: the US BTS Saturday · 88.0% · 386 recorded · 382 measured · Source: the US BTS Sunday · 85.8% · 403 recorded · 393 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 · 3.6 min · 408 recorded · 399 measured · Source: the US BTS Tuesday · 5.4 min · 377 recorded · 375 measured · Source: the US BTS Wednesday · -0.1 min · 386 recorded · 382 measured · Source: the US BTS Thursday · 2.0 min · 391 recorded · 383 measured · Source: the US BTS Friday · 5.3 min · 390 recorded · 388 measured · Source: the US BTS Saturday · 7.6 min · 386 recorded · 382 measured · Source: the US BTS Sunday · 8.2 min · 403 recorded · 393 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 · 408 · 408 recorded · 399 measured · Source: the US BTS Tuesday · 377 · 377 recorded · 375 measured · Source: the US BTS Wednesday · 386 · 386 recorded · 382 measured · Source: the US BTS Thursday · 391 · 391 recorded · 383 measured · Source: the US BTS Friday · 390 · 390 recorded · 388 measured · Source: the US BTS Saturday · 386 · 386 recorded · 382 measured · Source: the US BTS Sunday · 403 · 403 recorded · 393 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday91.7%3.6 min399408
Tuesday90.1%5.4 min375377
Wednesday92.2%-0.1 min382386
Thursday91.4%2.0 min383391
Friday86.9%5.3 min388390
Saturday88.0%7.6 min382386
Sunday85.8%8.2 min393403

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 · 83.0% · 238 recorded · 212 measured · Source: the US BTS Feb · 93.5% · 218 recorded · 216 measured · Source: the US BTS Mar · 86.0% · 317 recorded · 315 measured · Source: the US BTS Apr · 90.6% · 308 recorded · 308 measured · Source: the US BTS May · 91.1% · 294 recorded · 293 measured · Source: the US BTS Jun · 94.6% · 240 recorded · 239 measured · Source: the US BTS Jul · 84.5% · 250 recorded · 245 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 116 recorded · 116 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 100 recorded · 100 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 182 recorded · 182 measured · Source: the US BTS Nov · 91.2% · 240 recorded · 239 measured · Source: the US BTS Dec · 84.4% · 238 recorded · 237 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 · 8.3 min · 238 recorded · 212 measured · Source: the US BTS Feb · 3.1 min · 218 recorded · 216 measured · Source: the US BTS Mar · 6.6 min · 317 recorded · 315 measured · Source: the US BTS Apr · 5.1 min · 308 recorded · 308 measured · Source: the US BTS May · 2.7 min · 294 recorded · 293 measured · Source: the US BTS Jun · -1.6 min · 240 recorded · 239 measured · Source: the US BTS Jul · 10.6 min · 250 recorded · 245 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 116 recorded · 116 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 100 recorded · 100 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 182 recorded · 182 measured · Source: the US BTS Nov · 3.8 min · 240 recorded · 239 measured · Source: the US BTS Dec · 7.7 min · 238 recorded · 237 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 · 238 · 238 recorded · 212 measured · Source: the US BTS Feb · 218 · 218 recorded · 216 measured · Source: the US BTS Mar · 317 · 317 recorded · 315 measured · Source: the US BTS Apr · 308 · 308 recorded · 308 measured · Source: the US BTS May · 294 · 294 recorded · 293 measured · Source: the US BTS Jun · 240 · 240 recorded · 239 measured · Source: the US BTS Jul · 250 · 250 recorded · 245 measured · Source: the US BTS Aug · 116 · 116 recorded · 116 measured · Source: the US BTS Sep · 100 · 100 recorded · 100 measured · Source: the US BTS Oct · 182 · 182 recorded · 182 measured · Source: the US BTS Nov · 240 · 240 recorded · 239 measured · Source: the US BTS Dec · 238 · 238 recorded · 237 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan83.0%8.3 min212238
Feb93.5%3.1 min216218
Mar86.0%6.6 min315317
Apr90.6%5.1 min308308
May91.1%2.7 min293294
Jun94.6%-1.6 min239240
Jul84.5%10.6 min245250
AugFewer than 200 measured departures—116116
SepFewer than 200 measured departures—100100
OctFewer than 200 measured departures—182182
Nov91.2%3.8 min239240
Dec84.4%7.7 min237238

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 88.1% 2,416
  • Delayed >15 min 10.4% 286
  • Cancelled 1.4% 39
  • 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

17
17 of 17
Flight numbersBy direction DeparturesOn time
YX3487 IAD → CHS 469 90.0%
YX3401 CHS → IAD 432 87.3%
UA1108 IAD → CHS 415 95.9%
UA1858 CHS → IAD 335 94.0%
UA325 IAD → CHS 73 89.0%
UA276 CHS → IAD 68 97.1%
UA1274 IAD → CHS 61 96.7%
UA684 IAD → CHS 58 85.5%
UA780 CHS → IAD 56 75.0%
YX3517 CHS → IAD 56 96.2%
YX3473 IAD → CHS 55 88.2%
UA1872 IAD → CHS 52 88.2%
UA1883 CHS → IAD 52 69.2%
YX3468 IAD → CHS 43 76.2%
YX3409 CHS → IAD 41 87.8%
UA1134 CHS → IAD 37 67.7%
UA281 CHS → IAD 32 93.8%

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 123 +0.8% 1 83.7%
June 2026 119 −0.8% 1 95.8%
May 2026 163 +25.4% 0 90.2%
April 2026 155 +1.3% 0 87.7%
March 2026 180 +33.3% 2 83.3%
February 2026 106 −3.6% 0 92.5%
January 2026 104 −3.7% 10 78.8%
December 2025 113 −8.9% 1 77.0%
November 2025 121 +2.5% 1 88.4%
October 2025 102 +27.5% 0 91.2%
September 2025 100 0 95.0%
August 2025 116 0 90.5%
July 2025 122 4 85.2%
June 2025 120 0 93.3%
May 2025 130 1 92.3%
April 2025 153 0 93.5%
March 2025 135 0 89.6%
February 2025 110 2 94.5%
January 2025 108 16 87.0%
December 2024 124 0 91.1%
November 2024 118 0 94.1%
October 2024 80 0 96.3%

How to read this chart

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