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635 km · Domestic

Boston Logan (BOS) – Buffalo Niagara (BUF)

In July 2026, 340 flights operated between Boston Logan and Buffalo Niagara (both directions), and 72.1% 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
January10192▼ 8.9%
February9770▼ 27.8%
March128218▲ 70.3%
April171209▲ 22.2%
May172330▲ 91.9%
June203327▲ 61.1%
July244340▲ 39.3%
August246––
September173––
October207–in progress
November169––
December132––
Year to date (Jan–Jul)1,1161,586▲ 42.1%

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
January84.2%62.0%▼ 26.4%
February79.4%78.6%▼ 1.0%
March75.0%72.5%▼ 3.3%
April90.1%73.2%▼ 18.8%
May79.7%86.7%▲ 8.8%
June77.3%78.3%▲ 1.3%
July64.3%72.1%▲ 12.1%
August85.0%––
September68.8%––
October72.5%–in progress
November78.7%––
December62.9%––
Year-to-date average (Jan–Jul)78.6%74.8%▼ 4.8%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January29▲ 350.0%
February26▲ 200.0%
March01–
April10▼ 100.0%
May04–
June011–
July226▲ 1,200.0%
August2––
September2––
October4–in progress
November0––
December12––
Year to date (Jan–Jul)757▲ 714.3%

Airlines on this route

  1. JetBlue Airways 81.9%
  2. Republic Airways 14.7%
  3. Envoy Air 3.4%

Oct 1, 2024 – Jul 31, 2026

By direction

BOS → BUF

Scheduled flights
2,080
Flights operated
2,034
Cancelled
46 · 2.2%
On-time departures
75.8%

BUF → BOS

Scheduled flights
2,080
Flights operated
2,034
Cancelled
46 · 2.2%
On-time departures
78.7%

BOS → BUF and BUF → BOS counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
JetBlue Airways B6 3,407 81.9% 76.1% 76
Republic Airways YX 610 14.7% 83.2% 16
Envoy Air MQ 143 3.4% 79.0% 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 delay07:00–08:00-0.7min · 459 recorded · 456 measured
Gap to highest-delay hour31.5min07:00 ↔ 18:00
Recorded flights4,160BOS–BUF

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 · Fewer than 200 measured departures · 3 recorded · 3 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 196 recorded · 189 measured · Source: the US BTS 07:00 · 92.1% · 459 recorded · 456 measured · Source: the US BTS 08:00 · 85.9% · 381 recorded · 368 measured · Source: the US BTS 09:00 · 84.8% · 291 recorded · 289 measured · Source: the US BTS 10:00 · 83.4% · 308 recorded · 302 measured · Source: the US BTS 11:00 · 80.2% · 369 recorded · 364 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 160 recorded · 157 measured · Source: the US BTS 13:00 · 73.4% · 245 recorded · 244 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 154 recorded · 152 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 158 recorded · 153 measured · Source: the US BTS 16:00 · 70.7% · 280 recorded · 273 measured · Source: the US BTS 17:00 · 68.4% · 298 recorded · 291 measured · Source: the US BTS 18:00 · 57.0% · 271 recorded · 265 measured · Source: the US BTS 19:00 · 66.2% · 270 recorded · 263 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 153 recorded · 146 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 114 recorded · 111 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 50 recorded · 42 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 · Fewer than 200 measured departures · 3 recorded · 3 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 196 recorded · 189 measured · Source: the US BTS 07:00 · -0.7 min · 459 recorded · 456 measured · Source: the US BTS 08:00 · 7.6 min · 381 recorded · 368 measured · Source: the US BTS 09:00 · 5.6 min · 291 recorded · 289 measured · Source: the US BTS 10:00 · 3.8 min · 308 recorded · 302 measured · Source: the US BTS 11:00 · 8.3 min · 369 recorded · 364 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 160 recorded · 157 measured · Source: the US BTS 13:00 · 12.1 min · 245 recorded · 244 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 154 recorded · 152 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 158 recorded · 153 measured · Source: the US BTS 16:00 · 19.7 min · 280 recorded · 273 measured · Source: the US BTS 17:00 · 23.1 min · 298 recorded · 291 measured · Source: the US BTS 18:00 · 30.7 min · 271 recorded · 265 measured · Source: the US BTS 19:00 · 22.8 min · 270 recorded · 263 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 153 recorded · 146 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 114 recorded · 111 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 50 recorded · 42 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 · 3 · 3 recorded · 3 measured · Source: the US BTS 06:00 · 196 · 196 recorded · 189 measured · Source: the US BTS 07:00 · 459 · 459 recorded · 456 measured · Source: the US BTS 08:00 · 381 · 381 recorded · 368 measured · Source: the US BTS 09:00 · 291 · 291 recorded · 289 measured · Source: the US BTS 10:00 · 308 · 308 recorded · 302 measured · Source: the US BTS 11:00 · 369 · 369 recorded · 364 measured · Source: the US BTS 12:00 · 160 · 160 recorded · 157 measured · Source: the US BTS 13:00 · 245 · 245 recorded · 244 measured · Source: the US BTS 14:00 · 154 · 154 recorded · 152 measured · Source: the US BTS 15:00 · 158 · 158 recorded · 153 measured · Source: the US BTS 16:00 · 280 · 280 recorded · 273 measured · Source: the US BTS 17:00 · 298 · 298 recorded · 291 measured · Source: the US BTS 18:00 · 271 · 271 recorded · 265 measured · Source: the US BTS 19:00 · 270 · 270 recorded · 263 measured · Source: the US BTS 20:00 · 153 · 153 recorded · 146 measured · Source: the US BTS 21:00 · 114 · 114 recorded · 111 measured · Source: the US BTS 22:00 · 50 · 50 recorded · 42 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———
05:00Fewer than 200 measured departures—33
06:00Fewer than 200 measured departures—189196
07:0092.1%-0.7 min456459
08:0085.9%7.6 min368381
09:0084.8%5.6 min289291
10:0083.4%3.8 min302308
11:0080.2%8.3 min364369
12:00Fewer than 200 measured departures—157160
13:0073.4%12.1 min244245
14:00Fewer than 200 measured departures—152154
15:00Fewer than 200 measured departures—153158
16:0070.7%19.7 min273280
17:0068.4%23.1 min291298
18:0057.0%30.7 min265271
19:0066.2%22.8 min263270
20:00Fewer than 200 measured departures—146153
21:00Fewer than 200 measured departures—111114
22:00Fewer than 200 measured departures—4250
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 77.7% · 632 recorded · 610 measured · Source: the US BTS Tuesday · 79.3% · 575 recorded · 556 measured · Source: the US BTS Wednesday · 81.4% · 564 recorded · 553 measured · Source: the US BTS Thursday · 73.5% · 626 recorded · 622 measured · Source: the US BTS Friday · 73.2% · 629 recorded · 623 measured · Source: the US BTS Saturday · 83.0% · 497 recorded · 489 measured · Source: the US BTS Sunday · 74.6% · 637 recorded · 615 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 · 12.8 min · 632 recorded · 610 measured · Source: the US BTS Tuesday · 7.8 min · 575 recorded · 556 measured · Source: the US BTS Wednesday · 10.9 min · 564 recorded · 553 measured · Source: the US BTS Thursday · 15.8 min · 626 recorded · 622 measured · Source: the US BTS Friday · 14.9 min · 629 recorded · 623 measured · Source: the US BTS Saturday · 6.8 min · 497 recorded · 489 measured · Source: the US BTS Sunday · 15.1 min · 637 recorded · 615 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 · 632 · 632 recorded · 610 measured · Source: the US BTS Tuesday · 575 · 575 recorded · 556 measured · Source: the US BTS Wednesday · 564 · 564 recorded · 553 measured · Source: the US BTS Thursday · 626 · 626 recorded · 622 measured · Source: the US BTS Friday · 629 · 629 recorded · 623 measured · Source: the US BTS Saturday · 497 · 497 recorded · 489 measured · Source: the US BTS Sunday · 637 · 637 recorded · 615 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday77.7%12.8 min610632
Tuesday79.3%7.8 min556575
Wednesday81.4%10.9 min553564
Thursday73.5%15.8 min622626
Friday73.2%14.9 min623629
Saturday83.0%6.8 min489497
Sunday74.6%15.1 min615637

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 · 204 recorded · 193 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 175 recorded · 167 measured · Source: the US BTS Mar · 73.4% · 347 recorded · 346 measured · Source: the US BTS Apr · 80.8% · 381 recorded · 380 measured · Source: the US BTS May · 84.3% · 506 recorded · 502 measured · Source: the US BTS Jun · 77.9% · 541 recorded · 530 measured · Source: the US BTS Jul · 68.8% · 612 recorded · 584 measured · Source: the US BTS Aug · 85.0% · 248 recorded · 246 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 175 recorded · 173 measured · Source: the US BTS Oct · 79.0% · 327 recorded · 323 measured · Source: the US BTS Nov · 81.9% · 343 recorded · 343 measured · Source: the US BTS Dec · 73.3% · 301 recorded · 281 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 · Fewer than 200 measured departures · 204 recorded · 193 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 175 recorded · 167 measured · Source: the US BTS Mar · 15.9 min · 347 recorded · 346 measured · Source: the US BTS Apr · 6.2 min · 381 recorded · 380 measured · Source: the US BTS May · 4.5 min · 506 recorded · 502 measured · Source: the US BTS Jun · 11.7 min · 541 recorded · 530 measured · Source: the US BTS Jul · 22.2 min · 612 recorded · 584 measured · Source: the US BTS Aug · 3.2 min · 248 recorded · 246 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 175 recorded · 173 measured · Source: the US BTS Oct · 11.0 min · 327 recorded · 323 measured · Source: the US BTS Nov · 8.1 min · 343 recorded · 343 measured · Source: the US BTS Dec · 14.9 min · 301 recorded · 281 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 · 204 · 204 recorded · 193 measured · Source: the US BTS Feb · 175 · 175 recorded · 167 measured · Source: the US BTS Mar · 347 · 347 recorded · 346 measured · Source: the US BTS Apr · 381 · 381 recorded · 380 measured · Source: the US BTS May · 506 · 506 recorded · 502 measured · Source: the US BTS Jun · 541 · 541 recorded · 530 measured · Source: the US BTS Jul · 612 · 612 recorded · 584 measured · Source: the US BTS Aug · 248 · 248 recorded · 246 measured · Source: the US BTS Sep · 175 · 175 recorded · 173 measured · Source: the US BTS Oct · 327 · 327 recorded · 323 measured · Source: the US BTS Nov · 343 · 343 recorded · 343 measured · Source: the US BTS Dec · 301 · 301 recorded · 281 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—193204
FebFewer than 200 measured departures—167175
Mar73.4%15.9 min346347
Apr80.8%6.2 min380381
May84.3%4.5 min502506
Jun77.9%11.7 min530541
Jul68.8%22.2 min584612
Aug85.0%3.2 min246248
SepFewer than 200 measured departures—173175
Oct79.0%11.0 min323327
Nov81.9%8.1 min343343
Dec73.3%14.9 min281301

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 75.6% 3,143
  • Delayed >15 min 22.2% 925
  • Cancelled 2.2% 92
  • 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

31
31 of 31
Flight numbersBy direction DeparturesOn time
B66716 BUF → BOS 549 84.5%
B66715 BOS → BUF 519 69.8%
B66516 BUF → BOS 327 61.8%
B66415 BOS → BUF 322 65.5%
B66216 BUF → BOS 310 85.3%
B661115 BOS → BUF 305 67.7%
B661215 BOS → BUF 200 86.0%
B661216 BUF → BOS 200 71.9%
YX4788 BUF → BOS 103 90.0%
B662115 BOS → BUF 95 92.4%
B661295 BOS → BUF 82 84.0%
B661296 BUF → BOS 82 79.3%
YX4616 BOS → BUF 72 70.2%
YX4666 BUF → BOS 72 94.3%
YX4666 BOS → BUF 71 94.2%
B66515 BOS → BUF 65 87.5%
B662116 BUF → BOS 54 78.4%
B66915 BOS → BUF 52 74.5%
YX4440 BUF → BOS 51 66.7%
YX4440 BOS → BUF 51 90.2%
B66916 BUF → BOS 47 69.6%
YX4500 BOS → BUF 44 79.6%
YX4500 BUF → BOS 44 79.6%
B661316 BUF → BOS 43 73.8%
B661116 BUF → BOS 37 91.7%
YX4774 BUF → BOS 35 74.3%
YX4774 BOS → BUF 35 82.9%
MQ4068 BUF → BOS 33 66.7%
YX4702 BOS → BUF 32 74.2%
B66315 BOS → BUF 31 96.8%
B66316 BUF → BOS 31 93.6%

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 340 +39.3% 26 72.1%
June 2026 327 +61.1% 11 78.3%
May 2026 330 +91.9% 4 86.7%
April 2026 209 +22.2% 0 73.2%
March 2026 218 +70.3% 1 72.5%
February 2026 70 −27.8% 6 78.6%
January 2026 92 −8.9% 9 62.0%
December 2025 132 −11.4% 12 62.9%
November 2025 169 −2.9% 0 78.7%
October 2025 207 +78.4% 4 72.5%
September 2025 173 2 68.8%
August 2025 246 2 85.0%
July 2025 244 2 64.3%
June 2025 203 0 77.3%
May 2025 172 0 79.7%
April 2025 171 1 90.1%
March 2025 128 0 75.0%
February 2025 97 2 79.4%
January 2025 101 2 84.2%
December 2024 149 8 82.6%
November 2024 174 0 85.1%
October 2024 116 0 90.5%

How to read this chart

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