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647 km · Domestic

Helena (HLN) – Salt Lake City (SLC)

In July 2026, 124 flights operated between Helena and Salt Lake City (both directions), and 90.3% 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
January119122▲ 2.5%
February1121120.0%
March1241240.0%
April1201200.0%
May1241240.0%
June1201200.0%
July1241240.0%
August124––
September120––
October124–in progress
November114––
December118––
Year to date (Jan–Jul)843846▲ 0.4%

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
January93.3%95.1%▲ 1.9%
February97.3%93.8%▼ 3.6%
March98.4%97.6%▼ 0.8%
April97.5%95.8%▼ 1.7%
May95.2%100.0%▲ 5.0%
June96.7%94.2%▼ 2.6%
July96.8%90.3%▼ 6.7%
August95.2%––
September96.7%––
October96.0%–in progress
November93.0%––
December100.0%––
Year-to-date average (Jan–Jul)96.5%95.3%▼ 1.2%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January30▼ 100.0%
February00–
March00–
April00–
May00–
June00–
July00–
August0––
September0––
October0–in progress
November4––
December0––
Year to date (Jan–Jul)30▼ 100.0%

By direction

HLN → SLC

Scheduled flights
1,306
Flights operated
1,302
Cancelled
4 · 0.3%
On-time departures
96.0%

SLC → HLN

Scheduled flights
1,306
Flights operated
1,303
Cancelled
3 · 0.2%
On-time departures
95.2%

HLN → SLC and SLC → HLN counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 2,612 100.0% 95.6% 7

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 delay13:00–14:00-3.7min · 623 recorded · 620 measured
Gap to highest-delay hour2.6min13:00 ↔ 10:00
Recorded flights2,612HLN–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 · 97.6% · 620 recorded · 619 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 30 recorded · 30 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 8 recorded · 8 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · 94.5% · 459 recorded · 457 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 189 recorded · 189 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 25 recorded · 25 measured · Source: the US BTS 13:00 · 94.8% · 623 recorded · 620 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · 95.9% · 241 recorded · 241 measured · Source: the US BTS 21:00 · 96.4% · 416 recorded · 415 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 · -3.2 min · 620 recorded · 619 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 30 recorded · 30 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 8 recorded · 8 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · -1.1 min · 459 recorded · 457 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 189 recorded · 189 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 25 recorded · 25 measured · Source: the US BTS 13:00 · -3.7 min · 623 recorded · 620 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · -3.0 min · 241 recorded · 241 measured · Source: the US BTS 21:00 · -3.5 min · 416 recorded · 415 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.

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 · 620 · 620 recorded · 619 measured · Source: the US BTS 06:00 · 30 · 30 recorded · 30 measured · Source: the US BTS 07:00 · 8 · 8 recorded · 8 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · 459 · 459 recorded · 457 measured · Source: the US BTS 11:00 · 189 · 189 recorded · 189 measured · Source: the US BTS 12:00 · 25 · 25 recorded · 25 measured · Source: the US BTS 13:00 · 623 · 623 recorded · 620 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · 241 · 241 recorded · 241 measured · Source: the US BTS 21:00 · 416 · 416 recorded · 415 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———
05:0097.6%-3.2 min619620
06:00Fewer than 200 measured departures—3030
07:00Fewer than 200 measured departures—88
08:00No observations———
09:00No observations———
10:0094.5%-1.1 min457459
11:00Fewer than 200 measured departures—189189
12:00Fewer than 200 measured departures—2525
13:0094.8%-3.7 min620623
14:00No observations———
15:00No observations———
16:00No observations———
17:00Fewer than 200 measured departures—11
18:00No observations———
19:00No observations———
20:0095.9%-3.0 min241241
21:0096.4%-3.5 min415416
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 · 94.7% · 376 recorded · 376 measured · Source: the US BTS Tuesday · 96.5% · 372 recorded · 371 measured · Source: the US BTS Wednesday · 95.4% · 368 recorded · 368 measured · Source: the US BTS Thursday · 95.4% · 368 recorded · 367 measured · Source: the US BTS Friday · 95.2% · 376 recorded · 375 measured · Source: the US BTS Saturday · 95.7% · 376 recorded · 374 measured · Source: the US BTS Sunday · 96.5% · 376 recorded · 374 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 · -1.5 min · 376 recorded · 376 measured · Source: the US BTS Tuesday · -3.2 min · 372 recorded · 371 measured · Source: the US BTS Wednesday · -2.7 min · 368 recorded · 368 measured · Source: the US BTS Thursday · -2.7 min · 368 recorded · 367 measured · Source: the US BTS Friday · -2.0 min · 376 recorded · 375 measured · Source: the US BTS Saturday · -4.3 min · 376 recorded · 374 measured · Source: the US BTS Sunday · -2.0 min · 376 recorded · 374 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 · 376 · 376 recorded · 376 measured · Source: the US BTS Tuesday · 372 · 372 recorded · 371 measured · Source: the US BTS Wednesday · 368 · 368 recorded · 368 measured · Source: the US BTS Thursday · 368 · 368 recorded · 367 measured · Source: the US BTS Friday · 376 · 376 recorded · 375 measured · Source: the US BTS Saturday · 376 · 376 recorded · 374 measured · Source: the US BTS Sunday · 376 · 376 recorded · 374 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday94.7%-1.5 min376376
Tuesday96.5%-3.2 min371372
Wednesday95.4%-2.7 min368368
Thursday95.4%-2.7 min367368
Friday95.2%-2.0 min375376
Saturday95.7%-4.3 min374376
Sunday96.5%-2.0 min374376

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 · 94.2% · 244 recorded · 241 measured · Source: the US BTS Feb · 95.5% · 224 recorded · 224 measured · Source: the US BTS Mar · 98.0% · 248 recorded · 248 measured · Source: the US BTS Apr · 96.7% · 240 recorded · 240 measured · Source: the US BTS May · 97.6% · 248 recorded · 248 measured · Source: the US BTS Jun · 95.4% · 240 recorded · 240 measured · Source: the US BTS Jul · 93.6% · 248 recorded · 248 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 124 recorded · 124 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 120 recorded · 120 measured · Source: the US BTS Oct · 97.1% · 204 recorded · 204 measured · Source: the US BTS Nov · 94.0% · 236 recorded · 232 measured · Source: the US BTS Dec · 94.1% · 236 recorded · 236 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 · -1.1 min · 244 recorded · 241 measured · Source: the US BTS Feb · -3.8 min · 224 recorded · 224 measured · Source: the US BTS Mar · -5.5 min · 248 recorded · 248 measured · Source: the US BTS Apr · -3.7 min · 240 recorded · 240 measured · Source: the US BTS May · -3.0 min · 248 recorded · 248 measured · Source: the US BTS Jun · -3.1 min · 240 recorded · 240 measured · Source: the US BTS Jul · -0.6 min · 248 recorded · 248 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 124 recorded · 124 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 120 recorded · 120 measured · Source: the US BTS Oct · -3.4 min · 204 recorded · 204 measured · Source: the US BTS Nov · -3.1 min · 236 recorded · 232 measured · Source: the US BTS Dec · 0.6 min · 236 recorded · 236 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 · 244 · 244 recorded · 241 measured · Source: the US BTS Feb · 224 · 224 recorded · 224 measured · Source: the US BTS Mar · 248 · 248 recorded · 248 measured · Source: the US BTS Apr · 240 · 240 recorded · 240 measured · Source: the US BTS May · 248 · 248 recorded · 248 measured · Source: the US BTS Jun · 240 · 240 recorded · 240 measured · Source: the US BTS Jul · 248 · 248 recorded · 248 measured · Source: the US BTS Aug · 124 · 124 recorded · 124 measured · Source: the US BTS Sep · 120 · 120 recorded · 120 measured · Source: the US BTS Oct · 204 · 204 recorded · 204 measured · Source: the US BTS Nov · 236 · 236 recorded · 232 measured · Source: the US BTS Dec · 236 · 236 recorded · 236 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan94.2%-1.1 min241244
Feb95.5%-3.8 min224224
Mar98.0%-5.5 min248248
Apr96.7%-3.7 min240240
May97.6%-3.0 min248248
Jun95.4%-3.1 min240240
Jul93.6%-0.6 min248248
AugFewer than 200 measured departures—124124
SepFewer than 200 measured departures—120120
Oct97.1%-3.4 min204204
Nov94.0%-3.1 min232236
Dec94.1%0.6 min236236

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 95.4% 2,491
  • Delayed >15 min 4.4% 114
  • Cancelled 0.3% 7
  • 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

5
Flight numbersBy direction DeparturesOn time
OO3901 HLN → SLC 658 97.7%
OO3880 HLN → SLC 648 94.3%
OO3880 SLC → HLN 626 94.2%
OO3839 SLC → HLN 462 95.9%
OO3542 SLC → HLN 195 96.9%

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 124 +0.0% 0 90.3%
June 2026 120 +0.0% 0 94.2%
May 2026 124 +0.0% 0 100.0%
April 2026 120 +0.0% 0 95.8%
March 2026 124 +0.0% 0 97.6%
February 2026 112 +0.0% 0 93.8%
January 2026 122 +2.5% 0 95.1%
December 2025 118 +0.0% 0 100.0%
November 2025 114 −3.4% 4 93.0%
October 2025 124 +55.0% 0 96.0%
September 2025 120 0 96.7%
August 2025 124 0 95.2%
July 2025 124 0 96.8%
June 2025 120 0 96.7%
May 2025 124 0 95.2%
April 2025 120 0 97.5%
March 2025 124 0 98.4%
February 2025 112 0 97.3%
January 2025 119 3 93.3%
December 2024 118 0 88.1%
November 2024 118 0 94.9%
October 2024 80 0 98.8%

How to read this chart

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