Aviation Data
EN
EnglishTiếng Việt

3,380 km · Domestic

Boston Logan (BOS) – Salt Lake City (SLC)

In July 2026, 236 flights operated between Boston Logan and Salt Lake City (both directions), and 78.0% 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
January162170▲ 4.9%
February192204▲ 6.3%
March300264▼ 12.0%
April180184▲ 2.2%
May186184▼ 1.1%
June217220▲ 1.4%
July242236▼ 2.5%
August231––
September184––
October184–in progress
November194––
December210––
Year to date (Jan–Jul)1,4791,462▼ 1.1%

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%81.2%▼ 6.0%
February79.7%77.5%▼ 2.8%
March81.7%83.3%▲ 2.0%
April88.9%90.2%▲ 1.5%
May80.1%88.6%▲ 10.6%
June76.0%80.0%▲ 5.3%
July73.6%78.0%▲ 6.0%
August80.1%––
September79.3%––
October77.7%–in progress
November89.2%––
December79.5%––
Year-to-date average (Jan–Jul)80.9%82.7%▲ 2.2%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January214▲ 600.0%
February016–
March20▼ 100.0%
April00–
May02–
June10▼ 100.0%
July410▲ 150.0%
August1––
September0––
October0–in progress
November0––
December4––
Year to date (Jan–Jul)942▲ 366.7%

Airlines on this route

  1. Delta Air Lines 84.6%
  2. JetBlue Airways 15.4%

Oct 1, 2024 – Jul 31, 2026

By direction

BOS → SLC

Scheduled flights
2,246
Flights operated
2,220
Cancelled
26 · 1.2%
On-time departures
81.5%

SLC → BOS

Scheduled flights
2,243
Flights operated
2,213
Cancelled
30 · 1.3%
On-time departures
80.7%

BOS → SLC and SLC → BOS counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Delta Air Lines DL 3,797 84.6% 84.0% 31
JetBlue Airways B6 692 15.4% 64.8% 25

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 delay06:00–07:00-0.4min · 642 recorded · 636 measured
Gap to highest-delay hour16.9min06:00 ↔ 18:00
Recorded flights4,489BOS–SLC

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 · 95.0% · 642 recorded · 636 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 17 recorded · 17 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 52 recorded · 50 measured · Source: the US BTS 09:00 · 84.6% · 565 recorded · 560 measured · Source: the US BTS 10:00 · 83.2% · 562 recorded · 559 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 125 recorded · 124 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 36 recorded · 34 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 41 recorded · 41 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 3 recorded · 3 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 65 recorded · 65 measured · Source: the US BTS 17:00 · 76.6% · 790 recorded · 782 measured · Source: the US BTS 18:00 · 70.9% · 614 recorded · 608 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 121 recorded · 116 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 145 recorded · 139 measured · Source: the US BTS 23:00 · 85.7% · 710 recorded · 698 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 · -0.4 min · 642 recorded · 636 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 17 recorded · 17 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 52 recorded · 50 measured · Source: the US BTS 09:00 · 9.4 min · 565 recorded · 560 measured · Source: the US BTS 10:00 · 13.7 min · 562 recorded · 559 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 125 recorded · 124 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 36 recorded · 34 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 41 recorded · 41 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 3 recorded · 3 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 65 recorded · 65 measured · Source: the US BTS 17:00 · 14.9 min · 790 recorded · 782 measured · Source: the US BTS 18:00 · 16.5 min · 614 recorded · 608 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 121 recorded · 116 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 145 recorded · 139 measured · Source: the US BTS 23:00 · 5.0 min · 710 recorded · 698 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 · 642 · 642 recorded · 636 measured · Source: the US BTS 07:00 · 17 · 17 recorded · 17 measured · Source: the US BTS 08:00 · 52 · 52 recorded · 50 measured · Source: the US BTS 09:00 · 565 · 565 recorded · 560 measured · Source: the US BTS 10:00 · 562 · 562 recorded · 559 measured · Source: the US BTS 11:00 · 125 · 125 recorded · 124 measured · Source: the US BTS 12:00 · 36 · 36 recorded · 34 measured · Source: the US BTS 13:00 · 41 · 41 recorded · 41 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · 3 · 3 recorded · 3 measured · Source: the US BTS 16:00 · 65 · 65 recorded · 65 measured · Source: the US BTS 17:00 · 790 · 790 recorded · 782 measured · Source: the US BTS 18:00 · 614 · 614 recorded · 608 measured · Source: the US BTS 19:00 · 121 · 121 recorded · 116 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 22:00 · 145 · 145 recorded · 139 measured · Source: the US BTS 23:00 · 710 · 710 recorded · 698 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

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———
06:0095.0%-0.4 min636642
07:00Fewer than 200 measured departures—1717
08:00Fewer than 200 measured departures—5052
09:0084.6%9.4 min560565
10:0083.2%13.7 min559562
11:00Fewer than 200 measured departures—124125
12:00Fewer than 200 measured departures—3436
13:00Fewer than 200 measured departures—4141
14:00No observations———
15:00Fewer than 200 measured departures—33
16:00Fewer than 200 measured departures—6565
17:0076.6%14.9 min782790
18:0070.9%16.5 min608614
19:00Fewer than 200 measured departures—116121
20:00No observations———
21:00Fewer than 200 measured departures—11
22:00Fewer than 200 measured departures—139145
23:0085.7%5.0 min698710

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 79.9% · 659 recorded · 641 measured · Source: the US BTS Tuesday · 81.2% · 595 recorded · 586 measured · Source: the US BTS Wednesday · 84.1% · 588 recorded · 584 measured · Source: the US BTS Thursday · 80.3% · 648 recorded · 646 measured · Source: the US BTS Friday · 79.9% · 655 recorded · 648 measured · Source: the US BTS Saturday · 83.1% · 691 recorded · 687 measured · Source: the US BTS Sunday · 79.4% · 653 recorded · 641 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 · 12.6 min · 659 recorded · 641 measured · Source: the US BTS Tuesday · 14.7 min · 595 recorded · 586 measured · Source: the US BTS Wednesday · 7.4 min · 588 recorded · 584 measured · Source: the US BTS Thursday · 11.7 min · 648 recorded · 646 measured · Source: the US BTS Friday · 11.4 min · 655 recorded · 648 measured · Source: the US BTS Saturday · 9.1 min · 691 recorded · 687 measured · Source: the US BTS Sunday · 10.7 min · 653 recorded · 641 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 · 659 · 659 recorded · 641 measured · Source: the US BTS Tuesday · 595 · 595 recorded · 586 measured · Source: the US BTS Wednesday · 588 · 588 recorded · 584 measured · Source: the US BTS Thursday · 648 · 648 recorded · 646 measured · Source: the US BTS Friday · 655 · 655 recorded · 648 measured · Source: the US BTS Saturday · 691 · 691 recorded · 687 measured · Source: the US BTS Sunday · 653 · 653 recorded · 641 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday79.9%12.6 min641659
Tuesday81.2%14.7 min586595
Wednesday84.1%7.4 min584588
Thursday80.3%11.7 min646648
Friday79.9%11.4 min648655
Saturday83.1%9.1 min687691
Sunday79.4%10.7 min641653

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 · 83.7% · 348 recorded · 332 measured · Source: the US BTS Feb · 78.5% · 412 recorded · 396 measured · Source: the US BTS Mar · 82.5% · 566 recorded · 564 measured · Source: the US BTS Apr · 89.6% · 364 recorded · 364 measured · Source: the US BTS May · 84.3% · 372 recorded · 370 measured · Source: the US BTS Jun · 78.0% · 438 recorded · 437 measured · Source: the US BTS Jul · 75.7% · 492 recorded · 478 measured · Source: the US BTS Aug · 80.1% · 232 recorded · 231 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 184 recorded · 184 measured · Source: the US BTS Oct · 82.4% · 323 recorded · 323 measured · Source: the US BTS Nov · 87.0% · 368 recorded · 368 measured · Source: the US BTS Dec · 73.6% · 390 recorded · 386 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 · 11.6 min · 348 recorded · 332 measured · Source: the US BTS Feb · 13.8 min · 412 recorded · 396 measured · Source: the US BTS Mar · 8.4 min · 566 recorded · 564 measured · Source: the US BTS Apr · 4.0 min · 364 recorded · 364 measured · Source: the US BTS May · 6.9 min · 372 recorded · 370 measured · Source: the US BTS Jun · 12.4 min · 438 recorded · 437 measured · Source: the US BTS Jul · 17.0 min · 492 recorded · 478 measured · Source: the US BTS Aug · 11.3 min · 232 recorded · 231 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 184 recorded · 184 measured · Source: the US BTS Oct · 10.7 min · 323 recorded · 323 measured · Source: the US BTS Nov · 7.0 min · 368 recorded · 368 measured · Source: the US BTS Dec · 16.5 min · 390 recorded · 386 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 · 348 · 348 recorded · 332 measured · Source: the US BTS Feb · 412 · 412 recorded · 396 measured · Source: the US BTS Mar · 566 · 566 recorded · 564 measured · Source: the US BTS Apr · 364 · 364 recorded · 364 measured · Source: the US BTS May · 372 · 372 recorded · 370 measured · Source: the US BTS Jun · 438 · 438 recorded · 437 measured · Source: the US BTS Jul · 492 · 492 recorded · 478 measured · Source: the US BTS Aug · 232 · 232 recorded · 231 measured · Source: the US BTS Sep · 184 · 184 recorded · 184 measured · Source: the US BTS Oct · 323 · 323 recorded · 323 measured · Source: the US BTS Nov · 368 · 368 recorded · 368 measured · Source: the US BTS Dec · 390 · 390 recorded · 386 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan83.7%11.6 min332348
Feb78.5%13.8 min396412
Mar82.5%8.4 min564566
Apr89.6%4.0 min364364
May84.3%6.9 min370372
Jun78.0%12.4 min437438
Jul75.7%17.0 min478492
Aug80.1%11.3 min231232
SepFewer than 200 measured departures—184184
Oct82.4%10.7 min323323
Nov87.0%7.0 min368368
Dec73.6%16.5 min386390

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 80.1% 3,596
  • Delayed >15 min 18.6% 837
  • Cancelled 1.2% 56
  • 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

12
12 of 12
Flight numbersBy direction DeparturesOn time
DL657 SLC → BOS 658 84.1%
DL702 SLC → BOS 645 76.7%
DL859 BOS → SLC 641 95.0%
DL445 BOS → SLC 634 74.2%
DL464 BOS → SLC 598 83.8%
DL696 SLC → BOS 568 91.1%
B66247 BOS → SLC 212 65.0%
B66248 SLC → BOS 212 63.0%
B66647 BOS → SLC 101 62.6%
B66648 SLC → BOS 101 59.6%
B66747 BOS → SLC 33 78.8%
B66748 SLC → BOS 33 81.8%

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 236 −2.5% 10 78.0%
June 2026 220 +1.4% 0 80.0%
May 2026 184 −1.1% 2 88.6%
April 2026 184 +2.2% 0 90.2%
March 2026 264 −12.0% 0 83.3%
February 2026 204 +6.3% 16 77.5%
January 2026 170 +4.9% 14 81.2%
December 2025 210 +19.3% 4 79.5%
November 2025 194 +11.5% 0 89.2%
October 2025 184 +32.4% 0 77.7%
September 2025 184 0 79.3%
August 2025 231 1 80.1%
July 2025 242 4 73.6%
June 2025 217 1 76.0%
May 2025 186 0 80.1%
April 2025 180 0 88.9%
March 2025 300 2 81.7%
February 2025 192 0 79.7%
January 2025 162 2 86.4%
December 2024 176 0 66.5%
November 2024 174 0 84.5%
October 2024 139 0 88.5%

How to read this chart

Loading the guide…