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3,316 km · Domestic

Washington Dulles (IAD) – Harry Reid (LAS)

In July 2026, 184 flights operated between Washington Dulles and Harry Reid (both directions), and 73.9% 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
January179173▼ 3.4%
February200148▼ 26.0%
March198159▼ 19.7%
April239161▼ 32.6%
May288172▼ 40.3%
June222180▼ 18.9%
July246184▼ 25.2%
August238––
September181––
October186–in progress
November178––
December184––
Year to date (Jan–Jul)1,5721,177▼ 25.1%

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
January82.1%83.8%▲ 2.1%
February86.0%88.5%▲ 2.9%
March85.4%86.2%▲ 0.9%
April86.2%92.5%▲ 7.3%
May83.0%87.8%▲ 5.8%
June73.9%70.6%▼ 4.5%
July76.8%73.9%▼ 3.8%
August83.6%––
September95.6%––
October92.5%–in progress
November86.5%––
December87.5%––
Year-to-date average (Jan–Jul)81.9%83.3%▲ 1.7%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January28▲ 300.0%
February00–
March12▲ 100.0%
April110.0%
May10▼ 100.0%
June00–
July00–
August0––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)511▲ 120.0%

Airlines on this route

  1. United Airlines 91.2%
  2. Frontier Airlines 8.8%

Oct 1, 2024 – Jul 31, 2026

By direction

IAD → LAS

Scheduled flights
2,096
Flights operated
2,088
Cancelled
8 · 0.4%
On-time departures
82.9%

LAS → IAD

Scheduled flights
2,095
Flights operated
2,085
Cancelled
10 · 0.5%
On-time departures
86.8%

IAD → LAS and LAS → IAD counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 3,821 91.2% 86.7% 18
Frontier Airlines F9 370 8.8% 65.4% 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 delay08:00–09:001.0min · 906 recorded · 901 measured
Gap to highest-delay hour18.8min08:00 ↔ 17:00
Recorded flights4,191IAD–LAS

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · Fewer than 200 measured departures · 72 recorded · 72 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 · 2 recorded · 2 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 189 recorded · 189 measured · Source: the US BTS 08:00 · 93.2% · 906 recorded · 901 measured · Source: the US BTS 09:00 · 83.2% · 375 recorded · 375 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 88.2% · 477 recorded · 476 measured · Source: the US BTS 13:00 · 85.3% · 703 recorded · 699 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 24 recorded · 24 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 87 recorded · 87 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 23 recorded · 23 measured · Source: the US BTS 17:00 · 75.1% · 250 recorded · 249 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 19:00 · 82.6% · 277 recorded · 276 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 90 recorded · 90 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 139 recorded · 138 measured · Source: the US BTS 23:00 · 87.4% · 575 recorded · 570 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 · Fewer than 200 measured departures · 72 recorded · 72 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 · 2 recorded · 2 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 189 recorded · 189 measured · Source: the US BTS 08:00 · 1.0 min · 906 recorded · 901 measured · Source: the US BTS 09:00 · 5.6 min · 375 recorded · 375 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 7.5 min · 477 recorded · 476 measured · Source: the US BTS 13:00 · 7.9 min · 703 recorded · 699 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 24 recorded · 24 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 87 recorded · 87 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 23 recorded · 23 measured · Source: the US BTS 17:00 · 19.7 min · 250 recorded · 249 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 19:00 · 9.6 min · 277 recorded · 276 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 90 recorded · 90 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 139 recorded · 138 measured · Source: the US BTS 23:00 · 4.7 min · 575 recorded · 570 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 · 72 · 72 recorded · 72 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 · 2 · 2 recorded · 2 measured · Source: the US BTS 07:00 · 189 · 189 recorded · 189 measured · Source: the US BTS 08:00 · 906 · 906 recorded · 901 measured · Source: the US BTS 09:00 · 375 · 375 recorded · 375 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 477 · 477 recorded · 476 measured · Source: the US BTS 13:00 · 703 · 703 recorded · 699 measured · Source: the US BTS 14:00 · 24 · 24 recorded · 24 measured · Source: the US BTS 15:00 · 87 · 87 recorded · 87 measured · Source: the US BTS 16:00 · 23 · 23 recorded · 23 measured · Source: the US BTS 17:00 · 250 · 250 recorded · 249 measured · Source: the US BTS 18:00 · 2 · 2 recorded · 2 measured · Source: the US BTS 19:00 · 277 · 277 recorded · 276 measured · Source: the US BTS 20:00 · 90 · 90 recorded · 90 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · 139 · 139 recorded · 138 measured · Source: the US BTS 23:00 · 575 · 575 recorded · 570 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00Fewer than 200 measured departures—7272
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00No observations———
06:00Fewer than 200 measured departures—22
07:00Fewer than 200 measured departures—189189
08:0093.2%1.0 min901906
09:0083.2%5.6 min375375
10:00No observations———
11:00No observations———
12:0088.2%7.5 min476477
13:0085.3%7.9 min699703
14:00Fewer than 200 measured departures—2424
15:00Fewer than 200 measured departures—8787
16:00Fewer than 200 measured departures—2323
17:0075.1%19.7 min249250
18:00Fewer than 200 measured departures—22
19:0082.6%9.6 min276277
20:00Fewer than 200 measured departures—9090
21:00No observations———
22:00Fewer than 200 measured departures—138139
23:0087.4%4.7 min570575

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 84.1% · 611 recorded · 608 measured · Source: the US BTS Tuesday · 88.0% · 569 recorded · 568 measured · Source: the US BTS Wednesday · 87.8% · 590 recorded · 590 measured · Source: the US BTS Thursday · 83.7% · 607 recorded · 606 measured · Source: the US BTS Friday · 83.2% · 614 recorded · 613 measured · Source: the US BTS Saturday · 84.6% · 589 recorded · 585 measured · Source: the US BTS Sunday · 82.8% · 611 recorded · 603 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 · 10.1 min · 611 recorded · 608 measured · Source: the US BTS Tuesday · 3.9 min · 569 recorded · 568 measured · Source: the US BTS Wednesday · 4.7 min · 590 recorded · 590 measured · Source: the US BTS Thursday · 9.0 min · 607 recorded · 606 measured · Source: the US BTS Friday · 9.0 min · 614 recorded · 613 measured · Source: the US BTS Saturday · 7.0 min · 589 recorded · 585 measured · Source: the US BTS Sunday · 13.5 min · 611 recorded · 603 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 · 611 · 611 recorded · 608 measured · Source: the US BTS Tuesday · 569 · 569 recorded · 568 measured · Source: the US BTS Wednesday · 590 · 590 recorded · 590 measured · Source: the US BTS Thursday · 607 · 607 recorded · 606 measured · Source: the US BTS Friday · 614 · 614 recorded · 613 measured · Source: the US BTS Saturday · 589 · 589 recorded · 585 measured · Source: the US BTS Sunday · 611 · 611 recorded · 603 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday84.1%10.1 min608611
Tuesday88.0%3.9 min568569
Wednesday87.8%4.7 min590590
Thursday83.7%9.0 min606607
Friday83.2%9.0 min613614
Saturday84.6%7.0 min585589
Sunday82.8%13.5 min603611

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% · 362 recorded · 352 measured · Source: the US BTS Feb · 87.1% · 348 recorded · 348 measured · Source: the US BTS Mar · 85.7% · 360 recorded · 357 measured · Source: the US BTS Apr · 88.8% · 402 recorded · 400 measured · Source: the US BTS May · 84.8% · 461 recorded · 460 measured · Source: the US BTS Jun · 72.4% · 402 recorded · 402 measured · Source: the US BTS Jul · 75.6% · 430 recorded · 430 measured · Source: the US BTS Aug · 83.6% · 238 recorded · 238 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 181 recorded · 181 measured · Source: the US BTS Oct · 94.1% · 306 recorded · 306 measured · Source: the US BTS Nov · 89.0% · 356 recorded · 354 measured · Source: the US BTS Dec · 87.8% · 345 recorded · 345 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 · 9.6 min · 362 recorded · 352 measured · Source: the US BTS Feb · 4.7 min · 348 recorded · 348 measured · Source: the US BTS Mar · 10.8 min · 360 recorded · 357 measured · Source: the US BTS Apr · 4.2 min · 402 recorded · 400 measured · Source: the US BTS May · 9.7 min · 461 recorded · 460 measured · Source: the US BTS Jun · 15.6 min · 402 recorded · 402 measured · Source: the US BTS Jul · 17.5 min · 430 recorded · 430 measured · Source: the US BTS Aug · 9.4 min · 238 recorded · 238 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 181 recorded · 181 measured · Source: the US BTS Oct · 1.1 min · 306 recorded · 306 measured · Source: the US BTS Nov · 3.6 min · 356 recorded · 354 measured · Source: the US BTS Dec · 6.0 min · 345 recorded · 345 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 · 362 · 362 recorded · 352 measured · Source: the US BTS Feb · 348 · 348 recorded · 348 measured · Source: the US BTS Mar · 360 · 360 recorded · 357 measured · Source: the US BTS Apr · 402 · 402 recorded · 400 measured · Source: the US BTS May · 461 · 461 recorded · 460 measured · Source: the US BTS Jun · 402 · 402 recorded · 402 measured · Source: the US BTS Jul · 430 · 430 recorded · 430 measured · Source: the US BTS Aug · 238 · 238 recorded · 238 measured · Source: the US BTS Sep · 181 · 181 recorded · 181 measured · Source: the US BTS Oct · 306 · 306 recorded · 306 measured · Source: the US BTS Nov · 356 · 356 recorded · 354 measured · Source: the US BTS Dec · 345 · 345 recorded · 345 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan83.0%9.6 min352362
Feb87.1%4.7 min348348
Mar85.7%10.8 min357360
Apr88.8%4.2 min400402
May84.8%9.7 min460461
Jun72.4%15.6 min402402
Jul75.6%17.5 min430430
Aug83.6%9.4 min238238
SepFewer than 200 measured departures—181181
Oct94.1%1.1 min306306
Nov89.0%3.6 min354356
Dec87.8%6.0 min345345

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 84.5% 3,540
  • Delayed >15 min 15.1% 633
  • Cancelled 0.4% 18
  • 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

33
33 of 33
Flight numbersBy direction DeparturesOn time
UA2382 LAS → IAD 549 83.3%
UA1323 IAD → LAS 523 90.8%
UA284 LAS → IAD 338 89.0%
UA2156 IAD → LAS 278 89.2%
UA780 IAD → LAS 256 78.4%
UA1228 LAS → IAD 202 95.5%
F994277 IAD → LAS 185 63.2%
F994278 LAS → IAD 185 67.6%
UA636 IAD → LAS 135 88.9%
UA1764 IAD → LAS 121 74.4%
UA2497 LAS → IAD 88 88.6%
UA1140 LAS → IAD 72 93.1%
UA1041 IAD → LAS 70 85.7%
UA1066 IAD → LAS 68 92.7%
UA2747 IAD → LAS 68 86.8%
UA2230 LAS → IAD 55 88.9%
UA1379 LAS → IAD 54 96.3%
UA688 LAS → IAD 53 92.5%
UA1627 LAS → IAD 52 98.1%
UA2607 LAS → IAD 49 89.6%
UA1071 LAS → IAD 37 97.3%
UA2741 IAD → LAS 37 94.6%
UA742 LAS → IAD 37 83.8%
UA2136 IAD → LAS 35 65.7%
UA1668 IAD → LAS 34 70.6%
UA1470 IAD → LAS 32 90.6%
UA2863 LAS → IAD 32 81.3%
UA709 LAS → IAD 32 93.8%
UA1972 IAD → LAS 31 96.8%
UA2065 IAD → LAS 31 86.7%
UA2355 IAD → LAS 31 77.4%
UA2711 IAD → LAS 31 54.8%
UA1265 LAS → IAD 30 96.7%

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 184 −25.2% 0 73.9%
June 2026 180 −18.9% 0 70.6%
May 2026 172 −40.3% 0 87.8%
April 2026 161 −32.6% 1 92.5%
March 2026 159 −19.7% 2 86.2%
February 2026 148 −26.0% 0 88.5%
January 2026 173 −3.4% 8 83.8%
December 2025 184 +14.3% 0 87.5%
November 2025 178 +1.1% 0 86.5%
October 2025 186 +55.0% 0 92.5%
September 2025 181 0 95.6%
August 2025 238 0 83.6%
July 2025 246 0 76.8%
June 2025 222 0 73.9%
May 2025 288 1 83.0%
April 2025 239 1 86.2%
March 2025 198 1 85.4%
February 2025 200 0 86.0%
January 2025 179 2 82.1%
December 2024 161 0 88.2%
November 2024 176 2 91.5%
October 2024 120 0 96.7%

How to read this chart

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