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711 km · Domestic

Patrick Leahy Burlington (BTV) – Washington Dulles (IAD)

In July 2026, 87 flights operated between Patrick Leahy Burlington and Washington Dulles (both directions), and 92.0% 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
January10329▼ 71.8%
February6889▲ 30.9%
March10484▼ 19.2%
April11237▼ 67.0%
May13476▼ 43.3%
June13652▼ 61.8%
July17087▼ 48.8%
August142––
September65––
October85–in progress
November25––
December31––
Year to date (Jan–Jul)827454▼ 45.1%

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
January86.4%89.7%▲ 3.8%
February85.3%88.8%▲ 4.1%
March98.1%85.7%▼ 12.6%
April96.4%91.9%▼ 4.7%
May85.8%96.1%▲ 12.0%
June77.9%96.2%▲ 23.5%
July81.2%92.0%▲ 13.3%
August86.6%––
September89.2%––
October87.1%–in progress
November92.0%––
December93.5%––
Year-to-date average (Jan–Jul)87.3%91.5%▲ 4.8%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January220.0%
February32▼ 33.3%
March220.0%
April00–
May00–
June50▼ 100.0%
July224▼ 81.8%
August1––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)3410▼ 70.6%

Airlines on this route

  1. Republic Airways 89.1%
  2. United Airlines 10.9%

Oct 1, 2024 – Jul 31, 2026

By direction

BTV → IAD

Scheduled flights
866
Flights operated
847
Cancelled
19 · 2.2%
On-time departures
89.1%

IAD → BTV

Scheduled flights
1,092
Flights operated
1,066
Cancelled
26 · 2.4%
On-time departures
88.5%

BTV → IAD and IAD → BTV counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Republic Airways YX 1,745 89.1% 89.4% 43
United Airlines UA 213 10.9% 83.9% 2

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 delay08:00–09:00-1.7min · 583 recorded · 577 measured
Gap to highest-delay hour22.5min08:00 ↔ 22:00
Recorded flights1,958BTV–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 · 91.5% · 279 recorded · 271 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 94.5% · 583 recorded · 577 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 125 recorded · 124 measured · Source: the US BTS 10:00 · 90.9% · 278 recorded · 276 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 125 recorded · 125 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 46 recorded · 44 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 73 recorded · 73 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 130 recorded · 124 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 78 recorded · 72 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 · 81.9% · 241 recorded · 227 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 · 7.8 min · 279 recorded · 271 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · -1.7 min · 583 recorded · 577 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 125 recorded · 124 measured · Source: the US BTS 10:00 · 0.0 min · 278 recorded · 276 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 125 recorded · 125 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 46 recorded · 44 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 73 recorded · 73 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 130 recorded · 124 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 78 recorded · 72 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 · 20.8 min · 241 recorded · 227 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 · 279 · 279 recorded · 271 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 583 · 583 recorded · 577 measured · Source: the US BTS 09:00 · 125 · 125 recorded · 124 measured · Source: the US BTS 10:00 · 278 · 278 recorded · 276 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 125 · 125 recorded · 125 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · 46 · 46 recorded · 44 measured · Source: the US BTS 15:00 · 73 · 73 recorded · 73 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 130 · 130 recorded · 124 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · 78 · 78 recorded · 72 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 · 241 · 241 recorded · 227 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———
05:0091.5%7.8 min271279
06:00No observations———
07:00No observations———
08:0094.5%-1.7 min577583
09:00Fewer than 200 measured departures—124125
10:0090.9%0.0 min276278
11:00No observations———
12:00Fewer than 200 measured departures—125125
13:00No observations———
14:00Fewer than 200 measured departures—4446
15:00Fewer than 200 measured departures—7373
16:00No observations———
17:00Fewer than 200 measured departures—124130
18:00No observations———
19:00Fewer than 200 measured departures—7278
20:00No observations———
21:00No observations———
22:0081.9%20.8 min227241
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 91.0% · 310 recorded · 300 measured · Source: the US BTS Tuesday · 89.7% · 271 recorded · 262 measured · Source: the US BTS Wednesday · 87.4% · 251 recorded · 246 measured · Source: the US BTS Thursday · 87.7% · 316 recorded · 309 measured · Source: the US BTS Friday · 85.9% · 323 recorded · 320 measured · Source: the US BTS Saturday · 86.5% · 226 recorded · 222 measured · Source: the US BTS Sunday · 93.3% · 261 recorded · 254 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 · 4.9 min · 310 recorded · 300 measured · Source: the US BTS Tuesday · 4.3 min · 271 recorded · 262 measured · Source: the US BTS Wednesday · 3.8 min · 251 recorded · 246 measured · Source: the US BTS Thursday · 12.3 min · 316 recorded · 309 measured · Source: the US BTS Friday · 9.3 min · 323 recorded · 320 measured · Source: the US BTS Saturday · 7.4 min · 226 recorded · 222 measured · Source: the US BTS Sunday · 5.1 min · 261 recorded · 254 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 · 310 · 310 recorded · 300 measured · Source: the US BTS Tuesday · 271 · 271 recorded · 262 measured · Source: the US BTS Wednesday · 251 · 251 recorded · 246 measured · Source: the US BTS Thursday · 316 · 316 recorded · 309 measured · Source: the US BTS Friday · 323 · 323 recorded · 320 measured · Source: the US BTS Saturday · 226 · 226 recorded · 222 measured · Source: the US BTS Sunday · 261 · 261 recorded · 254 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday91.0%4.9 min300310
Tuesday89.7%4.3 min262271
Wednesday87.4%3.8 min246251
Thursday87.7%12.3 min309316
Friday85.9%9.3 min320323
Saturday86.5%7.4 min222226
Sunday93.3%5.1 min254261

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 · Fewer than 200 measured departures · 136 recorded · 132 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 162 recorded · 157 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 192 recorded · 188 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 149 recorded · 149 measured · Source: the US BTS May · 89.5% · 210 recorded · 210 measured · Source: the US BTS Jun · Fewer than 200 measured departures · 193 recorded · 188 measured · Source: the US BTS Jul · 84.8% · 283 recorded · 257 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 143 recorded · 142 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 65 recorded · 65 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 159 recorded · 159 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 121 recorded · 121 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 145 recorded · 145 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 · Fewer than 200 measured departures · 136 recorded · 132 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 162 recorded · 157 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 192 recorded · 188 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 149 recorded · 149 measured · Source: the US BTS May · 1.8 min · 210 recorded · 210 measured · Source: the US BTS Jun · Fewer than 200 measured departures · 193 recorded · 188 measured · Source: the US BTS Jul · 17.2 min · 283 recorded · 257 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 143 recorded · 142 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 65 recorded · 65 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 159 recorded · 159 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 121 recorded · 121 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 145 recorded · 145 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 · 136 · 136 recorded · 132 measured · Source: the US BTS Feb · 162 · 162 recorded · 157 measured · Source: the US BTS Mar · 192 · 192 recorded · 188 measured · Source: the US BTS Apr · 149 · 149 recorded · 149 measured · Source: the US BTS May · 210 · 210 recorded · 210 measured · Source: the US BTS Jun · 193 · 193 recorded · 188 measured · Source: the US BTS Jul · 283 · 283 recorded · 257 measured · Source: the US BTS Aug · 143 · 143 recorded · 142 measured · Source: the US BTS Sep · 65 · 65 recorded · 65 measured · Source: the US BTS Oct · 159 · 159 recorded · 159 measured · Source: the US BTS Nov · 121 · 121 recorded · 121 measured · Source: the US BTS Dec · 145 · 145 recorded · 145 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—132136
FebFewer than 200 measured departures—157162
MarFewer than 200 measured departures—188192
AprFewer than 200 measured departures—149149
May89.5%1.8 min210210
JunFewer than 200 measured departures—188193
Jul84.8%17.2 min257283
AugFewer than 200 measured departures—142143
SepFewer than 200 measured departures—6565
OctFewer than 200 measured departures—159159
NovFewer than 200 measured departures—121121
DecFewer than 200 measured departures—145145

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 86.7% 1,698
  • Delayed >15 min 11.0% 215
  • Cancelled 2.3% 45
  • 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

23
23 of 23
Flight numbersBy direction DeparturesOn time
YX3593 IAD → BTV 131 86.1%
YX3417 BTV → IAD 88 87.4%
YX3643 IAD → BTV 78 89.5%
YX3406 BTV → IAD 71 95.8%
YX3575 IAD → BTV 68 89.7%
YX3601 IAD → BTV 68 94.1%
YX3494 IAD → BTV 67 100.0%
YX3402 BTV → IAD 62 95.2%
YX3505 IAD → BTV 61 96.7%
YX3440 BTV → IAD 59 89.8%
YX3619 IAD → BTV 56 92.7%
YX3420 BTV → IAD 54 90.6%
YX3465 IAD → BTV 48 95.7%
YX3634 IAD → BTV 46 97.8%
YX3497 BTV → IAD 43 77.5%
YX3597 BTV → IAD 39 92.3%
YX3408 IAD → BTV 37 83.8%
YX3617 BTV → IAD 36 97.2%
YX3564 IAD → BTV 35 77.1%
YX3444 IAD → BTV 32 100.0%
YX3532 BTV → IAD 32 87.5%
YX3424 BTV → IAD 31 100.0%
YX3447 IAD → BTV 31 93.3%

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 87 −48.8% 4 92.0%
June 2026 52 −61.8% 0 96.2%
May 2026 76 −43.3% 0 96.1%
April 2026 37 −67.0% 0 91.9%
March 2026 84 −19.2% 2 85.7%
February 2026 89 +30.9% 2 88.8%
January 2026 29 −71.8% 2 89.7%
December 2025 31 −72.8% 0 93.5%
November 2025 25 −74.0% 0 92.0%
October 2025 85 +14.9% 0 87.1%
September 2025 65 0 89.2%
August 2025 142 1 86.6%
July 2025 170 22 81.2%
June 2025 136 5 77.9%
May 2025 134 0 85.8%
April 2025 112 0 96.4%
March 2025 104 2 98.1%
February 2025 68 3 85.3%
January 2025 103 2 86.4%
December 2024 114 0 89.5%
November 2024 96 0 91.7%
October 2024 74 0 95.9%

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