Williston Basin (XWA)
Williston Basin International Airport handled 16,866 passengers in July 2026, down 11.9% on a year earlier, according to the US BTS.
Flights (arrivals + departures) over time
The most recent periods19 periods
| Period | Flights (arrivals + departures) 2025 | Flights (arrivals + departures) 2026 | Change vs last year |
|---|---|---|---|
| January | 406 | 398 | ▼ 2.0% |
| February | 350 | 418 | ▲ 19.4% |
| March | 387 | 464 | ▲ 19.9% |
| April | 404 | 394 | ▼ 2.5% |
| May | 438 | 447 | ▲ 2.1% |
| June | 475 | 450 | ▼ 5.3% |
| July | 483 | 458 | ▼ 5.2% |
| August | 531 | – | – |
| September | 514 | – | – |
| October | 499 | – | in progress |
| November | 452 | – | – |
| December | 478 | – | – |
| Year to date (Jan–Jul) | 2,943 | 3,029 | ▲ 2.9% |
Passengers over time
The most recent periods19 periods
| Period | Passengers 2025 | Passengers 2026 | Change vs last year |
|---|---|---|---|
| January | 15,145 | 14,188 | ▼ 6.3% |
| February | 13,320 | 14,809 | ▲ 11.2% |
| March | 15,691 | 16,521 | ▲ 5.3% |
| April | 15,815 | 15,763 | ▼ 0.3% |
| May | 16,928 | 17,291 | ▲ 2.1% |
| June | 17,632 | 17,038 | ▼ 3.4% |
| July | 19,146 | 16,866 | ▼ 11.9% |
| August | 18,942 | – | – |
| September | 19,468 | – | – |
| October | 21,144 | – | in progress |
| November | 18,189 | – | – |
| December | 17,617 | – | – |
| Year to date (Jan–Jul) | 113,677 | 112,476 | ▼ 1.1% |
Tonnes of cargo over time
The most recent periods19 periods
Seats offered over time
The most recent periods19 periods
| Period | Seats offered 2025 | Seats offered 2026 | Change vs last year |
|---|---|---|---|
| January | 19,802 | 21,194 | ▲ 7.0% |
| February | 16,946 | 21,598 | ▲ 27.5% |
| March | 19,840 | 23,076 | ▲ 16.3% |
| April | 19,760 | 20,858 | ▲ 5.6% |
| May | 21,288 | 23,882 | ▲ 12.2% |
| June | 23,090 | 22,148 | ▼ 4.1% |
| July | 23,385 | 20,880 | ▼ 10.7% |
| August | 25,708 | – | – |
| September | 28,044 | – | – |
| October | 28,263 | – | in progress |
| November | 24,729 | – | – |
| December | 24,696 | – | – |
| Year to date (Jan–Jul) | 144,111 | 153,636 | ▲ 6.6% |
Load factor (computed)
Passengers ÷ seats offered, both as reported by the US BTS for the same months. Computed by us; the two source series are shown on this page.
The most recent periods19 periods
| Period | Load factor 2025 | Load factor 2026 | Change vs last year |
|---|---|---|---|
| January | 76.5% | 66.9% | ▼ 12.5% |
| February | 78.6% | 68.6% | ▼ 12.8% |
| March | 79.1% | 71.6% | ▼ 9.5% |
| April | 80.0% | 75.6% | ▼ 5.6% |
| May | 79.5% | 72.4% | ▼ 9.0% |
| June | 76.4% | 76.9% | ▲ 0.7% |
| July | 81.9% | 80.8% | ▼ 1.3% |
| August | 73.7% | – | – |
| September | 69.4% | – | – |
| October | 74.8% | – | in progress |
| November | 73.6% | – | – |
| December | 71.3% | – | – |
| Year-to-date average (Jan–Jul) | 78.9% | 73.3% | ▼ 7.1% |
Seasonality · flights (arrivals + departures) by month
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | 342 | 332 | 347 | 350 | 418 | 404 | 398 | 412 | 418 | 443 | 392 | 421 |
| 2025 | 406 | 350 | 387 | 404 | 438 | 475 | 483 | 531 | 514 | 499 | 452 | 478 |
| 2026 | 398 | 418 | 464 | 394 | 447 | 450 | 458 |
Busiest destinations
Flights recorded between Oct 12, 2024 and Jul 31, 2026, counted from flight records published by the US BTS. Not a current timetable.
| Busiest destinations | Flights | Distance (km) |
|---|---|---|
| Denver International Airport XWA–DEN → | 5,102 | 937 |
| Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field XWA–MSP → | 3,262 | 887 |
On-time departures by month
79.5% of 200 timed departures from Williston Basin International Airport left within 15 minutes of schedule in July 2026, according to the US BTS. Cancelled flights are excluded.
The most recent periods19 periods
| Period | On-time departures 2025 | On-time departures 2026 | Change vs last year |
|---|---|---|---|
| January | 67.8% | 69.4% | ▲ 2.4% |
| February | 71.7% | 75.3% | ▲ 5.0% |
| March | 84.7% | 75.5% | ▼ 10.8% |
| April | 78.7% | 80.4% | ▲ 2.0% |
| May | 84.3% | 90.4% | ▲ 7.2% |
| June | 79.3% | 81.1% | ▲ 2.3% |
| July | 76.6% | 79.5% | ▲ 3.7% |
| August | 79.7% | – | – |
| September | 90.6% | – | – |
| October | 91.9% | – | in progress |
| November | 88.4% | – | – |
| December | 60.9% | – | – |
| Year-to-date average (Jan–Jul) | 77.6% | 78.8% | ▲ 1.5% |
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.
Source: the US BTS · Oct 12, 2024 → Jul 31, 2026
Departure hour
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| 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 | 84.6% | 29.8 min | 293 | 297 |
| 06:00 | 86.5% | 20.8 min | 400 | 406 |
| 07:00 | 87.4% | 20.8 min | 714 | 726 |
| 08:00 | No observations | — | — | — |
| 09:00 | No observations | — | — | — |
| 10:00 | Fewer than 200 measured departures | — | 83 | 84 |
| 11:00 | 85.0% | 11.2 min | 446 | 449 |
| 12:00 | 77.8% | 17.6 min | 643 | 651 |
| 13:00 | Fewer than 200 measured departures | — | 100 | 100 |
| 14:00 | Fewer than 200 measured departures | — | 148 | 148 |
| 15:00 | 76.7% | 25.7 min | 750 | 760 |
| 16:00 | Fewer than 200 measured departures | — | 18 | 18 |
| 17:00 | 60.8% | 35.3 min | 265 | 270 |
| 18:00 | 71.8% | 25.5 min | 266 | 274 |
| 19:00 | No observations | — | — | — |
| 20:00 | No observations | — | — | — |
| 21:00 | No observations | — | — | — |
| 22:00 | No observations | — | — | — |
| 23:00 | No observations | — | — | — |
Day of week
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| Day of week | On-time departures | Average departure delay | With departure time | Recorded flights |
|---|---|---|---|---|
| Monday | 76.8% | 26.5 min | 617 | 624 |
| Tuesday | 79.5% | 19.7 min | 604 | 614 |
| Wednesday | 80.0% | 21.1 min | 606 | 613 |
| Thursday | 81.7% | 18.7 min | 606 | 612 |
| Friday | 81.5% | 19.1 min | 612 | 625 |
| Saturday | 79.9% | 19.5 min | 473 | 480 |
| Sunday | 78.5% | 27.1 min | 608 | 615 |
Month of year
Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.
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| Month of year | On-time departures | Average departure delay | With departure time | Recorded flights |
|---|---|---|---|---|
| Jan | 68.6% | 35.4 min | 347 | 362 |
| Feb | 73.6% | 27.2 min | 330 | 336 |
| Mar | 79.8% | 22.2 min | 376 | 384 |
| Apr | 79.5% | 23.7 min | 347 | 349 |
| May | 87.4% | 8.1 min | 389 | 393 |
| Jun | 80.2% | 19.3 min | 404 | 407 |
| Jul | 78.0% | 21.7 min | 414 | 416 |
| Aug | 79.7% | 23.0 min | 236 | 238 |
| Sep | 90.6% | 2.2 min | 223 | 223 |
| Oct | 91.5% | 6.1 min | 329 | 329 |
| Nov | 84.1% | 20.6 min | 352 | 365 |
| Dec | 67.8% | 44.6 min | 379 | 381 |
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 78.6% 3,288
- Delayed >15 min 20.0% 838
- Cancelled 1.4% 57
- 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.