Countries › United States › Great Falls › GTF Great Falls (GTF) GTF / KGTF
33,361
Great Falls International Airport handled 33,361 passengers in May 2026, up 2.8% on a year earlier, according to US Bureau of Transportation Statistics — T-100 Air Carrier Statistics .
Full count · domestic + international Flight timing & delays ↓
Passengers over time Showing 53 months. Full series runs 1990–2026 (437 periods).
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Against 2019 +18.3% same month, before the pandemic
Series depth 36 years from 1990
The most recent periods Open any period for the full breakdown. As published Newest first Oldest first Highest first Lowest first 24 of 24
Period Passengers Year on year Source May 2026 33,361 +2.8% US Bureau of Transportation Statistics Open this month → April 2026 30,031 +3.7% US Bureau of Transportation Statistics Open this month → March 2026 29,762 −0.4% US Bureau of Transportation Statistics Open this month → February 2026 23,933 −8.0% US Bureau of Transportation Statistics Open this month → January 2026 26,895 −4.6% US Bureau of Transportation Statistics Open this month → December 2025 30,091 −8.2% US Bureau of Transportation Statistics Open this month → November 2025 26,849 −8.4% US Bureau of Transportation Statistics Open this month → October 2025 31,218 +1.5% US Bureau of Transportation Statistics Open this month → September 2025 29,462 −7.0% US Bureau of Transportation Statistics Open this month → August 2025 35,029 −4.1% US Bureau of Transportation Statistics Open this month → July 2025 39,037 +5.8% US Bureau of Transportation Statistics Open this month → June 2025 36,793 +4.4% US Bureau of Transportation Statistics Open this month → May 2025 32,442 +6.5% US Bureau of Transportation Statistics Open this month → April 2025 28,965 +3.4% US Bureau of Transportation Statistics Open this month → March 2025 29,886 +2.0% US Bureau of Transportation Statistics Open this month → February 2025 26,013 +0.4% US Bureau of Transportation Statistics Open this month → January 2025 28,186 +6.0% US Bureau of Transportation Statistics Open this month → December 2024 32,766 +8.5% US Bureau of Transportation Statistics Open this month → November 2024 29,310 +5.0% US Bureau of Transportation Statistics Open this month → October 2024 30,755 −6.6% US Bureau of Transportation Statistics Open this month → September 2024 31,669 +0.7% US Bureau of Transportation Statistics Open this month → August 2024 36,543 +3.1% US Bureau of Transportation Statistics July 2024 36,900 −1.7% US Bureau of Transportation Statistics June 2024 35,248 +11.5% US Bureau of Transportation Statistics
Also tracked here: aircraft movements (through May 2026), tonnes of cargo (through May 2026).
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.
US domestic sectors recorded by BTS Source: BTS · US Department of Transportation · 2024-09-01 → 2026-06-30
Lowest average delay 05:00–06:00 -2.5min · 879 recorded · 878 measured
Gap to highest-delay hour 14.6min 05:00 ↔ 14:00
Recorded flights 4,270 Great Falls International Airport
Departure hour Day of week Month of year
Departure hour On-time departures 100.0 50.0 0.0
00:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 01:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 02:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 03:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 04:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 05:00 · 97.2% · 879 recorded · 878 measured · Source: BTS · US Department of Transportation 06:00 · 93.3% · 716 recorded · 712 measured · Source: BTS · US Department of Transportation 07:00 · Fewer than 200 measured departures · 113 recorded · 112 measured · Source: BTS · US Department of Transportation 08:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 09:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: BTS · US Department of Transportation 10:00 · Fewer than 200 measured departures · 78 recorded · 78 measured · Source: BTS · US Department of Transportation 11:00 · 94.1% · 337 recorded · 337 measured · Source: BTS · US Department of Transportation 12:00 · Fewer than 200 measured departures · 94 recorded · 94 measured · Source: BTS · US Department of Transportation 13:00 · 92.6% · 316 recorded · 311 measured · Source: BTS · US Department of Transportation 14:00 · 79.7% · 705 recorded · 701 measured · Source: BTS · US Department of Transportation 15:00 · Fewer than 200 measured departures · 33 recorded · 33 measured · Source: BTS · US Department of Transportation 16:00 · Fewer than 200 measured departures · 117 recorded · 116 measured · Source: BTS · US Department of Transportation 17:00 · Fewer than 200 measured departures · 110 recorded · 110 measured · Source: BTS · US Department of Transportation 18:00 · 88.8% · 608 recorded · 606 measured · Source: BTS · US Department of Transportation 19:00 · Fewer than 200 measured departures · 23 recorded · 23 measured · Source: BTS · US Department of Transportation 20:00 · Fewer than 200 measured departures · 54 recorded · 54 measured · Source: BTS · US Department of Transportation 21:00 · Fewer than 200 measured departures · 40 recorded · 40 measured · Source: BTS · US Department of Transportation 22:00 · Fewer than 200 measured departures · 46 recorded · 45 measured · Source: BTS · US Department of Transportation 23:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
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Average departure delay 12.1 4.8 -2.5
00:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 01:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 02:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 03:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 04:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 05:00 · -2.5 min · 879 recorded · 878 measured · Source: BTS · US Department of Transportation 06:00 · 2.5 min · 716 recorded · 712 measured · Source: BTS · US Department of Transportation 07:00 · Fewer than 200 measured departures · 113 recorded · 112 measured · Source: BTS · US Department of Transportation 08:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 09:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: BTS · US Department of Transportation 10:00 · Fewer than 200 measured departures · 78 recorded · 78 measured · Source: BTS · US Department of Transportation 11:00 · -2.0 min · 337 recorded · 337 measured · Source: BTS · US Department of Transportation 12:00 · Fewer than 200 measured departures · 94 recorded · 94 measured · Source: BTS · US Department of Transportation 13:00 · -0.5 min · 316 recorded · 311 measured · Source: BTS · US Department of Transportation 14:00 · 12.1 min · 705 recorded · 701 measured · Source: BTS · US Department of Transportation 15:00 · Fewer than 200 measured departures · 33 recorded · 33 measured · Source: BTS · US Department of Transportation 16:00 · Fewer than 200 measured departures · 117 recorded · 116 measured · Source: BTS · US Department of Transportation 17:00 · Fewer than 200 measured departures · 110 recorded · 110 measured · Source: BTS · US Department of Transportation 18:00 · 1.3 min · 608 recorded · 606 measured · Source: BTS · US Department of Transportation 19:00 · Fewer than 200 measured departures · 23 recorded · 23 measured · Source: BTS · US Department of Transportation 20:00 · Fewer than 200 measured departures · 54 recorded · 54 measured · Source: BTS · US Department of Transportation 21:00 · Fewer than 200 measured departures · 40 recorded · 40 measured · Source: BTS · US Department of Transportation 22:00 · Fewer than 200 measured departures · 46 recorded · 45 measured · Source: BTS · US Department of Transportation 23:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
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Recorded flights 879 440 0
00:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 01:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 02:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 03:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 04:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 05:00 · 879 · 879 recorded · 878 measured · Source: BTS · US Department of Transportation 06:00 · 716 · 716 recorded · 712 measured · Source: BTS · US Department of Transportation 07:00 · 113 · 113 recorded · 112 measured · Source: BTS · US Department of Transportation 08:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 09:00 · 1 · 1 recorded · 1 measured · Source: BTS · US Department of Transportation 10:00 · 78 · 78 recorded · 78 measured · Source: BTS · US Department of Transportation 11:00 · 337 · 337 recorded · 337 measured · Source: BTS · US Department of Transportation 12:00 · 94 · 94 recorded · 94 measured · Source: BTS · US Department of Transportation 13:00 · 316 · 316 recorded · 311 measured · Source: BTS · US Department of Transportation 14:00 · 705 · 705 recorded · 701 measured · Source: BTS · US Department of Transportation 15:00 · 33 · 33 recorded · 33 measured · Source: BTS · US Department of Transportation 16:00 · 117 · 117 recorded · 116 measured · Source: BTS · US Department of Transportation 17:00 · 110 · 110 recorded · 110 measured · Source: BTS · US Department of Transportation 18:00 · 608 · 608 recorded · 606 measured · Source: BTS · US Department of Transportation 19:00 · 23 · 23 recorded · 23 measured · Source: BTS · US Department of Transportation 20:00 · 54 · 54 recorded · 54 measured · Source: BTS · US Department of Transportation 21:00 · 40 · 40 recorded · 40 measured · Source: BTS · US Department of Transportation 22:00 · 46 · 46 recorded · 45 measured · Source: BTS · US Department of Transportation 23:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
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View the figures Departure hour On-time departures Average departure delay With departure time Recorded flights 00:00 No observations — — — 01:00 No observations — — — 02:00 No observations — — — 03:00 No observations — — — 04:00 No observations — — — 05:00 97.2% -2.5 min 878 879 06:00 93.3% 2.5 min 712 716 07:00 Fewer than 200 measured departures — 112 113 08:00 No observations — — — 09:00 Fewer than 200 measured departures — 1 1 10:00 Fewer than 200 measured departures — 78 78 11:00 94.1% -2.0 min 337 337 12:00 Fewer than 200 measured departures — 94 94 13:00 92.6% -0.5 min 311 316 14:00 79.7% 12.1 min 701 705 15:00 Fewer than 200 measured departures — 33 33 16:00 Fewer than 200 measured departures — 116 117 17:00 Fewer than 200 measured departures — 110 110 18:00 88.8% 1.3 min 606 608 19:00 Fewer than 200 measured departures — 23 23 20:00 Fewer than 200 measured departures — 54 54 21:00 Fewer than 200 measured departures — 40 40 22:00 Fewer than 200 measured departures — 45 46 23:00 No observations — — —
Day of week On-time departures 100.0 50.0 0.0
Monday · 88.8% · 663 recorded · 663 measured · Source: BTS · US Department of Transportation Tuesday · 91.6% · 574 recorded · 573 measured · Source: BTS · US Department of Transportation Wednesday · 92.2% · 558 recorded · 554 measured · Source: BTS · US Department of Transportation Thursday · 87.4% · 637 recorded · 635 measured · Source: BTS · US Department of Transportation Friday · 89.9% · 653 recorded · 650 measured · Source: BTS · US Department of Transportation Saturday · 88.8% · 540 recorded · 534 measured · Source: BTS · US Department of Transportation Sunday · 88.5% · 645 recorded · 642 measured · Source: BTS · US Department of Transportation Mon Tue Wed Thu Fri Sat Sun
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Average departure delay 8.3 4.1 -0.2
Monday · 2.5 min · 663 recorded · 663 measured · Source: BTS · US Department of Transportation Tuesday · -0.2 min · 574 recorded · 573 measured · Source: BTS · US Department of Transportation Wednesday · 1.1 min · 558 recorded · 554 measured · Source: BTS · US Department of Transportation Thursday · 8.3 min · 637 recorded · 635 measured · Source: BTS · US Department of Transportation Friday · 3.5 min · 653 recorded · 650 measured · Source: BTS · US Department of Transportation Saturday · 6.4 min · 540 recorded · 534 measured · Source: BTS · US Department of Transportation Sunday · 2.7 min · 645 recorded · 642 measured · Source: BTS · US Department of Transportation Mon Tue Wed Thu Fri Sat Sun
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Recorded flights 663 332 0
Monday · 663 · 663 recorded · 663 measured · Source: BTS · US Department of Transportation Tuesday · 574 · 574 recorded · 573 measured · Source: BTS · US Department of Transportation Wednesday · 558 · 558 recorded · 554 measured · Source: BTS · US Department of Transportation Thursday · 637 · 637 recorded · 635 measured · Source: BTS · US Department of Transportation Friday · 653 · 653 recorded · 650 measured · Source: BTS · US Department of Transportation Saturday · 540 · 540 recorded · 534 measured · Source: BTS · US Department of Transportation Sunday · 645 · 645 recorded · 642 measured · Source: BTS · US Department of Transportation Mon Tue Wed Thu Fri Sat Sun
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View the figures Day of week On-time departures Average departure delay With departure time Recorded flights Monday 88.8% 2.5 min 663 663 Tuesday 91.6% -0.2 min 573 574 Wednesday 92.2% 1.1 min 554 558 Thursday 87.4% 8.3 min 635 637 Friday 89.9% 3.5 min 650 653 Saturday 88.8% 6.4 min 534 540 Sunday 88.5% 2.7 min 642 645
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 100.0 50.0 0.0
Jan · 90.7% · 411 recorded · 410 measured · Source: BTS · US Department of Transportation Feb · 86.1% · 381 recorded · 380 measured · Source: BTS · US Department of Transportation Mar · 90.6% · 419 recorded · 414 measured · Source: BTS · US Department of Transportation Apr · 90.6% · 383 recorded · 383 measured · Source: BTS · US Department of Transportation May · 87.6% · 396 recorded · 394 measured · Source: BTS · US Department of Transportation Jun · 87.2% · 384 recorded · 384 measured · Source: BTS · US Department of Transportation Jul · 89.9% · 207 recorded · 207 measured · Source: BTS · US Department of Transportation Aug · 87.1% · 211 recorded · 210 measured · Source: BTS · US Department of Transportation Sep · 92.0% · 376 recorded · 376 measured · Source: BTS · US Department of Transportation Oct · 90.8% · 369 recorded · 368 measured · Source: BTS · US Department of Transportation Nov · 91.1% · 354 recorded · 347 measured · Source: BTS · US Department of Transportation Dec · 90.0% · 379 recorded · 378 measured · Source: BTS · US Department of Transportation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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Average departure delay 7.4 3.4 -0.5
Jan · 1.8 min · 411 recorded · 410 measured · Source: BTS · US Department of Transportation Feb · 4.5 min · 381 recorded · 380 measured · Source: BTS · US Department of Transportation Mar · 1.4 min · 419 recorded · 414 measured · Source: BTS · US Department of Transportation Apr · 1.6 min · 383 recorded · 383 measured · Source: BTS · US Department of Transportation May · 5.3 min · 396 recorded · 394 measured · Source: BTS · US Department of Transportation Jun · 7.4 min · 384 recorded · 384 measured · Source: BTS · US Department of Transportation Jul · 5.1 min · 207 recorded · 207 measured · Source: BTS · US Department of Transportation Aug · 5.5 min · 211 recorded · 210 measured · Source: BTS · US Department of Transportation Sep · -0.2 min · 376 recorded · 376 measured · Source: BTS · US Department of Transportation Oct · 4.6 min · 369 recorded · 368 measured · Source: BTS · US Department of Transportation Nov · -0.5 min · 354 recorded · 347 measured · Source: BTS · US Department of Transportation Dec · 6.9 min · 379 recorded · 378 measured · Source: BTS · US Department of Transportation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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Recorded flights 419 210 0
Jan · 411 · 411 recorded · 410 measured · Source: BTS · US Department of Transportation Feb · 381 · 381 recorded · 380 measured · Source: BTS · US Department of Transportation Mar · 419 · 419 recorded · 414 measured · Source: BTS · US Department of Transportation Apr · 383 · 383 recorded · 383 measured · Source: BTS · US Department of Transportation May · 396 · 396 recorded · 394 measured · Source: BTS · US Department of Transportation Jun · 384 · 384 recorded · 384 measured · Source: BTS · US Department of Transportation Jul · 207 · 207 recorded · 207 measured · Source: BTS · US Department of Transportation Aug · 211 · 211 recorded · 210 measured · Source: BTS · US Department of Transportation Sep · 376 · 376 recorded · 376 measured · Source: BTS · US Department of Transportation Oct · 369 · 369 recorded · 368 measured · Source: BTS · US Department of Transportation Nov · 354 · 354 recorded · 347 measured · Source: BTS · US Department of Transportation Dec · 379 · 379 recorded · 378 measured · Source: BTS · US Department of Transportation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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View the figures Month of year On-time departures Average departure delay With departure time Recorded flights Jan 90.7% 1.8 min 410 411 Feb 86.1% 4.5 min 380 381 Mar 90.6% 1.4 min 414 419 Apr 90.6% 1.6 min 383 383 May 87.6% 5.3 min 394 396 Jun 87.2% 7.4 min 384 384 Jul 89.9% 5.1 min 207 207 Aug 87.1% 5.5 min 210 211 Sep 92.0% -0.2 min 376 376 Oct 90.8% 4.6 min 368 369 Nov 91.1% -0.5 min 347 354 Dec 90.0% 6.9 min 378 379
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 89.1% 3,806 Delayed >15 min 10.4% 445 Cancelled 0.4% 19 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 punctuality and average delay.
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