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1,486 km · Domestic

Washington Dulles (IAD) – Miami (MIA)

In July 2026, 62 flights operated between Washington Dulles and Miami (both directions), and 96.8% 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
January106145▲ 36.8%
February103122▲ 18.4%
March121126▲ 4.1%
April60134▲ 123.3%
May8290▲ 9.8%
June10460▼ 42.3%
July10062▼ 38.0%
August106––
September94––
October98–in progress
November88––
December116––
Year to date (Jan–Jul)676739▲ 9.3%

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
January90.6%84.8%▼ 6.4%
February82.5%84.4%▲ 2.3%
March85.1%78.6%▼ 7.6%
April95.0%87.3%▼ 8.1%
May86.6%97.8%▲ 12.9%
June69.2%100.0%▲ 44.5%
July74.0%96.8%▲ 30.8%
August74.5%––
September93.6%––
October90.8%–in progress
November81.8%––
December91.4%––
Year-to-date average (Jan–Jul)83.3%90.0%▲ 8.0%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January27▲ 250.0%
February10▼ 100.0%
March00–
April02–
May00–
June00–
July40▼ 100.0%
August0––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)79▲ 28.6%

Airlines on this route

  1. United Airlines 85.1%
  2. Frontier Airlines 14.9%

Oct 1, 2024 – Jul 31, 2026

By direction

IAD → MIA

Scheduled flights
1,114
Flights operated
1,106
Cancelled
8 · 0.7%
On-time departures
86.9%

MIA → IAD

Scheduled flights
1,114
Flights operated
1,106
Cancelled
8 · 0.7%
On-time departures
85.8%

IAD → MIA and MIA → IAD counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 1,896 85.1% 89.0% 8
Frontier Airlines F9 332 14.9% 70.7% 8

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 delay08:00–09:001.1min · 622 recorded · 619 measured
Gap to highest-delay hour6.7min08:00 ↔ 13:00
Recorded flights2,228IAD–MIA

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 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 08:00 · 94.2% · 622 recorded · 619 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 185 recorded · 184 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 15 recorded · 14 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 41 recorded · 41 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 145 recorded · 145 measured · Source: the US BTS 13:00 · 87.1% · 687 recorded · 684 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 12 recorded · 11 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 80 recorded · 80 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 21 recorded · 21 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 148 recorded · 148 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 164 recorded · 160 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 51 recorded · 51 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 12 recorded · 12 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 30 recorded · 28 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 10 recorded · 9 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 08:00 · 1.1 min · 622 recorded · 619 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 185 recorded · 184 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 15 recorded · 14 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 41 recorded · 41 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 145 recorded · 145 measured · Source: the US BTS 13:00 · 7.8 min · 687 recorded · 684 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 12 recorded · 11 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 80 recorded · 80 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 21 recorded · 21 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 148 recorded · 148 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 164 recorded · 160 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 51 recorded · 51 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 12 recorded · 12 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 30 recorded · 28 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 10 recorded · 9 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · 5 · 5 recorded · 5 measured · Source: the US BTS 08:00 · 622 · 622 recorded · 619 measured · Source: the US BTS 09:00 · 185 · 185 recorded · 184 measured · Source: the US BTS 10:00 · 15 · 15 recorded · 14 measured · Source: the US BTS 11:00 · 41 · 41 recorded · 41 measured · Source: the US BTS 12:00 · 145 · 145 recorded · 145 measured · Source: the US BTS 13:00 · 687 · 687 recorded · 684 measured · Source: the US BTS 14:00 · 12 · 12 recorded · 11 measured · Source: the US BTS 15:00 · 80 · 80 recorded · 80 measured · Source: the US BTS 16:00 · 21 · 21 recorded · 21 measured · Source: the US BTS 17:00 · 148 · 148 recorded · 148 measured · Source: the US BTS 18:00 · 164 · 164 recorded · 160 measured · Source: the US BTS 19:00 · 51 · 51 recorded · 51 measured · Source: the US BTS 20:00 · 12 · 12 recorded · 12 measured · Source: the US BTS 21:00 · 30 · 30 recorded · 28 measured · Source: the US BTS 22:00 · 10 · 10 recorded · 9 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———
06:00No observations———
07:00Fewer than 200 measured departures—55
08:0094.2%1.1 min619622
09:00Fewer than 200 measured departures—184185
10:00Fewer than 200 measured departures—1415
11:00Fewer than 200 measured departures—4141
12:00Fewer than 200 measured departures—145145
13:0087.1%7.8 min684687
14:00Fewer than 200 measured departures—1112
15:00Fewer than 200 measured departures—8080
16:00Fewer than 200 measured departures—2121
17:00Fewer than 200 measured departures—148148
18:00Fewer than 200 measured departures—160164
19:00Fewer than 200 measured departures—5151
20:00Fewer than 200 measured departures—1212
21:00Fewer than 200 measured departures—2830
22:00Fewer than 200 measured departures—910
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 85.9% · 353 recorded · 348 measured · Source: the US BTS Tuesday · 90.8% · 260 recorded · 260 measured · Source: the US BTS Wednesday · 94.0% · 265 recorded · 265 measured · Source: the US BTS Thursday · 83.2% · 336 recorded · 333 measured · Source: the US BTS Friday · 86.9% · 352 recorded · 352 measured · Source: the US BTS Saturday · 85.9% · 319 recorded · 319 measured · Source: the US BTS Sunday · 80.3% · 343 recorded · 335 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 · 16.1 min · 353 recorded · 348 measured · Source: the US BTS Tuesday · 4.2 min · 260 recorded · 260 measured · Source: the US BTS Wednesday · -1.6 min · 265 recorded · 265 measured · Source: the US BTS Thursday · 10.1 min · 336 recorded · 333 measured · Source: the US BTS Friday · 6.1 min · 352 recorded · 352 measured · Source: the US BTS Saturday · 9.3 min · 319 recorded · 319 measured · Source: the US BTS Sunday · 14.0 min · 343 recorded · 335 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 · 353 · 353 recorded · 348 measured · Source: the US BTS Tuesday · 260 · 260 recorded · 260 measured · Source: the US BTS Wednesday · 265 · 265 recorded · 265 measured · Source: the US BTS Thursday · 336 · 336 recorded · 333 measured · Source: the US BTS Friday · 352 · 352 recorded · 352 measured · Source: the US BTS Saturday · 319 · 319 recorded · 319 measured · Source: the US BTS Sunday · 343 · 343 recorded · 335 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday85.9%16.1 min348353
Tuesday90.8%4.2 min260260
Wednesday94.0%-1.6 min265265
Thursday83.2%10.1 min333336
Friday86.9%6.1 min352352
Saturday85.9%9.3 min319319
Sunday80.3%14.0 min335343

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 · 87.3% · 260 recorded · 251 measured · Source: the US BTS Feb · 83.6% · 226 recorded · 225 measured · Source: the US BTS Mar · 81.8% · 247 recorded · 247 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 196 recorded · 194 measured · Source: the US BTS May · Fewer than 200 measured departures · 172 recorded · 172 measured · Source: the US BTS Jun · Fewer than 200 measured departures · 164 recorded · 164 measured · Source: the US BTS Jul · Fewer than 200 measured departures · 166 recorded · 162 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 106 recorded · 106 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 94 recorded · 94 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 149 recorded · 149 measured · Source: the US BTS Nov · 88.9% · 208 recorded · 208 measured · Source: the US BTS Dec · 88.3% · 240 recorded · 240 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 · 5.6 min · 260 recorded · 251 measured · Source: the US BTS Feb · 10.9 min · 226 recorded · 225 measured · Source: the US BTS Mar · 13.3 min · 247 recorded · 247 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 196 recorded · 194 measured · Source: the US BTS May · Fewer than 200 measured departures · 172 recorded · 172 measured · Source: the US BTS Jun · Fewer than 200 measured departures · 164 recorded · 164 measured · Source: the US BTS Jul · Fewer than 200 measured departures · 166 recorded · 162 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 106 recorded · 106 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 94 recorded · 94 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 149 recorded · 149 measured · Source: the US BTS Nov · 7.0 min · 208 recorded · 208 measured · Source: the US BTS Dec · 6.8 min · 240 recorded · 240 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 · 260 · 260 recorded · 251 measured · Source: the US BTS Feb · 226 · 226 recorded · 225 measured · Source: the US BTS Mar · 247 · 247 recorded · 247 measured · Source: the US BTS Apr · 196 · 196 recorded · 194 measured · Source: the US BTS May · 172 · 172 recorded · 172 measured · Source: the US BTS Jun · 164 · 164 recorded · 164 measured · Source: the US BTS Jul · 166 · 166 recorded · 162 measured · Source: the US BTS Aug · 106 · 106 recorded · 106 measured · Source: the US BTS Sep · 94 · 94 recorded · 94 measured · Source: the US BTS Oct · 149 · 149 recorded · 149 measured · Source: the US BTS Nov · 208 · 208 recorded · 208 measured · Source: the US BTS Dec · 240 · 240 recorded · 240 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan87.3%5.6 min251260
Feb83.6%10.9 min225226
Mar81.8%13.3 min247247
AprFewer than 200 measured departures—194196
MayFewer than 200 measured departures—172172
JunFewer than 200 measured departures—164164
JulFewer than 200 measured departures—162166
AugFewer than 200 measured departures—106106
SepFewer than 200 measured departures—9494
OctFewer than 200 measured departures—149149
Nov88.9%7.0 min208208
Dec88.3%6.8 min240240

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 85.7% 1,910
  • Delayed >15 min 13.6% 302
  • Cancelled 0.7% 16
  • 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

15
15 of 15
Flight numbersBy direction DeparturesOn time
UA1073 IAD → MIA 609 94.1%
UA2435 MIA → IAD 590 87.2%
F993748 MIA → IAD 146 79.0%
F993731 IAD → MIA 112 74.3%
UA1538 MIA → IAD 91 80.2%
UA1214 IAD → MIA 76 90.8%
UA1102 IAD → MIA 74 78.4%
UA1643 MIA → IAD 72 93.1%
UA2144 MIA → IAD 64 92.1%
F993747 IAD → MIA 54 39.6%
UA1282 IAD → MIA 53 81.1%
UA1733 MIA → IAD 37 81.1%
UA2668 MIA → IAD 37 86.1%
UA723 IAD → MIA 37 91.7%
UA2650 IAD → MIA 31 100.0%

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 62 −38.0% 0 96.8%
June 2026 60 −42.3% 0 100.0%
May 2026 90 +9.8% 0 97.8%
April 2026 134 +123.3% 2 87.3%
March 2026 126 +4.1% 0 78.6%
February 2026 122 +18.4% 0 84.4%
January 2026 145 +36.8% 7 84.8%
December 2025 116 −6.5% 0 91.4%
November 2025 88 −26.7% 0 81.8%
October 2025 98 +92.2% 0 90.8%
September 2025 94 0 93.6%
August 2025 106 0 74.5%
July 2025 100 4 74.0%
June 2025 104 0 69.2%
May 2025 82 0 86.6%
April 2025 60 0 95.0%
March 2025 121 0 85.1%
February 2025 103 1 82.5%
January 2025 106 2 90.6%
December 2024 124 0 85.5%
November 2024 120 0 94.2%
October 2024 51 0 96.1%

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