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1,225 km · Domestic

Patrick Leahy Burlington (BTV) – Chicago O'Hare (ORD)

In July 2026, 242 flights operated between Patrick Leahy Burlington and Chicago O'Hare (both directions), and 71.9% 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
January134129▼ 3.7%
February112118▲ 5.4%
March164122▼ 25.6%
April160269▲ 68.1%
May207284▲ 37.2%
June225222▼ 1.3%
July237242▲ 2.1%
August220––
September244––
October326–in progress
November119––
December152––
Year to date (Jan–Jul)1,2391,386▲ 11.9%

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
January77.6%77.5%▼ 0.1%
February80.4%81.4%▲ 1.2%
March82.3%76.2%▼ 7.4%
April90.6%74.7%▼ 17.5%
May86.5%84.2%▼ 2.7%
June63.1%70.7%▲ 12.0%
July59.9%71.9%▲ 20.0%
August70.5%––
September81.1%––
October77.9%–in progress
November77.3%––
December78.3%––
Year-to-date average (Jan–Jul)77.2%76.7%▼ 0.7%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January05–
February00–
March02–
April04–
May04–
June716▲ 128.6%
July56▲ 20.0%
August10––
September0––
October0–in progress
November2––
December0––
Year to date (Jan–Jul)1237▲ 208.3%

Airlines on this route

  1. United Airlines 58.3%
  2. SkyWest Airlines 28.7%
  3. Republic Airways 8.9%
  4. Envoy Air 4.1%

Oct 1, 2024 – Jul 31, 2026

By direction

BTV → ORD

Scheduled flights
2,084
Flights operated
2,052
Cancelled
32 · 1.5%
On-time departures
80.9%

ORD → BTV

Scheduled flights
2,085
Flights operated
2,055
Cancelled
30 · 1.4%
On-time departures
74.7%

BTV → ORD and ORD → BTV counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 2,430 58.3% 80.6% 14
SkyWest Airlines OO 1,195 28.7% 66.2% 45
Republic Airways YX 372 8.9% 92.7% 3
Envoy Air MQ 172 4.1% 83.7% 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 delay07:00–08:005.3min · 221 recorded · 219 measured
Gap to highest-delay hour20.7min07:00 ↔ 18:00
Recorded flights4,169BTV–ORD

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 · 85.5% · 803 recorded · 794 measured · Source: the US BTS 07:00 · 94.1% · 221 recorded · 219 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 41 recorded · 41 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 26 recorded · 26 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 180 recorded · 180 measured · Source: the US BTS 11:00 · 82.6% · 576 recorded · 574 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 120 recorded · 120 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 80 recorded · 80 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 160 recorded · 159 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 87 recorded · 83 measured · Source: the US BTS 16:00 · 81.1% · 584 recorded · 577 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 188 recorded · 184 measured · Source: the US BTS 18:00 · 70.1% · 868 recorded · 857 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 121 recorded · 110 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 113 recorded · 102 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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 · 14.2 min · 803 recorded · 794 measured · Source: the US BTS 07:00 · 5.3 min · 221 recorded · 219 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 41 recorded · 41 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 26 recorded · 26 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 180 recorded · 180 measured · Source: the US BTS 11:00 · 9.1 min · 576 recorded · 574 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 120 recorded · 120 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 80 recorded · 80 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 160 recorded · 159 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 87 recorded · 83 measured · Source: the US BTS 16:00 · 25.0 min · 584 recorded · 577 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 188 recorded · 184 measured · Source: the US BTS 18:00 · 26.0 min · 868 recorded · 857 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 121 recorded · 110 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 113 recorded · 102 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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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 · 803 · 803 recorded · 794 measured · Source: the US BTS 07:00 · 221 · 221 recorded · 219 measured · Source: the US BTS 08:00 · 41 · 41 recorded · 41 measured · Source: the US BTS 09:00 · 26 · 26 recorded · 26 measured · Source: the US BTS 10:00 · 180 · 180 recorded · 180 measured · Source: the US BTS 11:00 · 576 · 576 recorded · 574 measured · Source: the US BTS 12:00 · 120 · 120 recorded · 120 measured · Source: the US BTS 13:00 · 80 · 80 recorded · 80 measured · Source: the US BTS 14:00 · 160 · 160 recorded · 159 measured · Source: the US BTS 15:00 · 87 · 87 recorded · 83 measured · Source: the US BTS 16:00 · 584 · 584 recorded · 577 measured · Source: the US BTS 17:00 · 188 · 188 recorded · 184 measured · Source: the US BTS 18:00 · 868 · 868 recorded · 857 measured · Source: the US BTS 19:00 · 121 · 121 recorded · 110 measured · Source: the US BTS 20:00 · 113 · 113 recorded · 102 measured · Source: the US BTS 21:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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———
06:0085.5%14.2 min794803
07:0094.1%5.3 min219221
08:00Fewer than 200 measured departures—4141
09:00Fewer than 200 measured departures—2626
10:00Fewer than 200 measured departures—180180
11:0082.6%9.1 min574576
12:00Fewer than 200 measured departures—120120
13:00Fewer than 200 measured departures—8080
14:00Fewer than 200 measured departures—159160
15:00Fewer than 200 measured departures—8387
16:0081.1%25.0 min577584
17:00Fewer than 200 measured departures—184188
18:0070.1%26.0 min857868
19:00Fewer than 200 measured departures—110121
20:00Fewer than 200 measured departures—102113
21:00Fewer than 200 measured departures—11
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 80.1% · 609 recorded · 592 measured · Source: the US BTS Tuesday · 79.7% · 569 recorded · 565 measured · Source: the US BTS Wednesday · 80.7% · 568 recorded · 558 measured · Source: the US BTS Thursday · 77.9% · 606 recorded · 598 measured · Source: the US BTS Friday · 78.1% · 610 recorded · 602 measured · Source: the US BTS Saturday · 74.4% · 601 recorded · 594 measured · Source: the US BTS Sunday · 74.1% · 606 recorded · 598 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 · 19.1 min · 609 recorded · 592 measured · Source: the US BTS Tuesday · 16.0 min · 569 recorded · 565 measured · Source: the US BTS Wednesday · 22.3 min · 568 recorded · 558 measured · Source: the US BTS Thursday · 16.6 min · 606 recorded · 598 measured · Source: the US BTS Friday · 21.0 min · 610 recorded · 602 measured · Source: the US BTS Saturday · 25.5 min · 601 recorded · 594 measured · Source: the US BTS Sunday · 24.4 min · 606 recorded · 598 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 · 609 · 609 recorded · 592 measured · Source: the US BTS Tuesday · 569 · 569 recorded · 565 measured · Source: the US BTS Wednesday · 568 · 568 recorded · 558 measured · Source: the US BTS Thursday · 606 · 606 recorded · 598 measured · Source: the US BTS Friday · 610 · 610 recorded · 602 measured · Source: the US BTS Saturday · 601 · 601 recorded · 594 measured · Source: the US BTS Sunday · 606 · 606 recorded · 598 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday80.1%19.1 min592609
Tuesday79.7%16.0 min565569
Wednesday80.7%22.3 min558568
Thursday77.9%16.6 min598606
Friday78.1%21.0 min602610
Saturday74.4%25.5 min594601
Sunday74.1%24.4 min598606

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 · 77.6% · 268 recorded · 263 measured · Source: the US BTS Feb · 80.9% · 230 recorded · 230 measured · Source: the US BTS Mar · 79.7% · 288 recorded · 286 measured · Source: the US BTS Apr · 80.7% · 433 recorded · 429 measured · Source: the US BTS May · 85.1% · 495 recorded · 491 measured · Source: the US BTS Jun · 66.9% · 470 recorded · 447 measured · Source: the US BTS Jul · 66.0% · 490 recorded · 479 measured · Source: the US BTS Aug · 70.5% · 230 recorded · 220 measured · Source: the US BTS Sep · 81.2% · 244 recorded · 244 measured · Source: the US BTS Oct · 82.7% · 474 recorded · 474 measured · Source: the US BTS Nov · 83.2% · 247 recorded · 244 measured · Source: the US BTS Dec · 83.3% · 300 recorded · 300 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 · 12.6 min · 268 recorded · 263 measured · Source: the US BTS Feb · 14.4 min · 230 recorded · 230 measured · Source: the US BTS Mar · 14.4 min · 288 recorded · 286 measured · Source: the US BTS Apr · 13.4 min · 433 recorded · 429 measured · Source: the US BTS May · 10.1 min · 495 recorded · 491 measured · Source: the US BTS Jun · 47.2 min · 470 recorded · 447 measured · Source: the US BTS Jul · 38.8 min · 490 recorded · 479 measured · Source: the US BTS Aug · 33.2 min · 230 recorded · 220 measured · Source: the US BTS Sep · 11.7 min · 244 recorded · 244 measured · Source: the US BTS Oct · 14.4 min · 474 recorded · 474 measured · Source: the US BTS Nov · 14.2 min · 247 recorded · 244 measured · Source: the US BTS Dec · 11.7 min · 300 recorded · 300 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 · 268 · 268 recorded · 263 measured · Source: the US BTS Feb · 230 · 230 recorded · 230 measured · Source: the US BTS Mar · 288 · 288 recorded · 286 measured · Source: the US BTS Apr · 433 · 433 recorded · 429 measured · Source: the US BTS May · 495 · 495 recorded · 491 measured · Source: the US BTS Jun · 470 · 470 recorded · 447 measured · Source: the US BTS Jul · 490 · 490 recorded · 479 measured · Source: the US BTS Aug · 230 · 230 recorded · 220 measured · Source: the US BTS Sep · 244 · 244 recorded · 244 measured · Source: the US BTS Oct · 474 · 474 recorded · 474 measured · Source: the US BTS Nov · 247 · 247 recorded · 244 measured · Source: the US BTS Dec · 300 · 300 recorded · 300 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan77.6%12.6 min263268
Feb80.9%14.4 min230230
Mar79.7%14.4 min286288
Apr80.7%13.4 min429433
May85.1%10.1 min491495
Jun66.9%47.2 min447470
Jul66.0%38.8 min479490
Aug70.5%33.2 min220230
Sep81.2%11.7 min244244
Oct82.7%14.4 min474474
Nov83.2%14.2 min244247
Dec83.3%11.7 min300300

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 76.6% 3,195
  • Delayed >15 min 21.9% 912
  • Cancelled 1.5% 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

35
35 of 35
Flight numbersBy direction DeparturesOn time
UA786 ORD → BTV 461 81.5%
UA1001 BTV → ORD 349 80.7%
UA636 ORD → BTV 327 71.4%
UA215 BTV → ORD 276 90.2%
UA1851 BTV → ORD 258 85.9%
UA349 ORD → BTV 141 64.5%
OO6251 BTV → ORD 133 74.2%
OO4943 ORD → BTV 132 46.7%
UA329 BTV → ORD 124 74.8%
OO6330 BTV → ORD 78 38.4%
OO6218 ORD → BTV 71 67.2%
OO6218 BTV → ORD 71 63.1%
YX3429 BTV → ORD 67 91.0%
OO4885 ORD → BTV 62 54.8%
UA2155 BTV → ORD 51 94.0%
OO6361 ORD → BTV 44 75.6%
OO6451 BTV → ORD 44 57.5%
OO6451 ORD → BTV 44 72.1%
OO6193 BTV → ORD 43 88.4%
OO6005 BTV → ORD 37 75.7%
UA1678 ORD → BTV 37 86.5%
UA1910 ORD → BTV 37 73.0%
UA2630 ORD → BTV 37 67.6%
YX3418 BTV → ORD 37 91.9%
UA2202 ORD → BTV 36 83.3%
MQ3657 ORD → BTV 33 84.9%
MQ3772 BTV → ORD 32 90.6%
UA350 BTV → ORD 32 93.8%
YX3531 ORD → BTV 32 93.8%
OO4775 ORD → BTV 31 83.9%
OO5615 BTV → ORD 31 80.7%
YX4635 ORD → BTV 31 77.4%
MQ3348 BTV → ORD 30 56.7%
MQ3348 ORD → BTV 30 86.7%
YX4632 BTV → ORD 30 100.0%

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 242 +2.1% 6 71.9%
June 2026 222 −1.3% 16 70.7%
May 2026 284 +37.2% 4 84.2%
April 2026 269 +68.1% 4 74.7%
March 2026 122 −25.6% 2 76.2%
February 2026 118 +5.4% 0 81.4%
January 2026 129 −3.7% 5 77.5%
December 2025 152 +2.7% 0 78.3%
November 2025 119 −4.8% 2 77.3%
October 2025 326 +120.3% 0 77.9%
September 2025 244 0 81.1%
August 2025 220 10 70.5%
July 2025 237 5 59.9%
June 2025 225 7 63.1%
May 2025 207 0 86.5%
April 2025 160 0 90.6%
March 2025 164 0 82.3%
February 2025 112 0 80.4%
January 2025 134 0 77.6%
December 2024 148 0 88.5%
November 2024 125 1 88.8%
October 2024 148 0 93.2%

How to read this chart

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