Iliamna Airport to Unalaska Airport ILI → DUT
518 nautical miles (596 statute miles) southwest on a straight line, true course 232°, about 218° magnetic at the departure end (variation 14E). At 120 knots that is 4 h 59 min at the quickest height in today's winds (30,000 ft, a 16-knot headwind), arriving about 10:47 pm AKDT (06:47 UTC), after sunset at the destination. Right now ILI is VFR, wind from the southwest (220°) at 8 knots; DUT is VFR, wind from the southwest (230°) at 18 knots, gusting to 21. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools. Airlines fly this pair: 1 flights in the DOT's last twelve reported months, the route's page.
The route the straight line, the warnings crossed, restrictions, pilot reports and the airports along the way · click a mark for its words
Green, blue, red and purple airport dots are the flying conditions reported there now (VFR, marginal VFR, IFR, low IFR); grey means no report. Red areas are SIGMETs, orange areas AIRMETs, hatched red areas temporary flight restrictions. Map tiles: OpenFreeMap, data © OpenStreetMap contributors.
Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of
No SIGMET or AIRMET covers any part of this route right now.
A SIGMET warns of weather hazardous to all aircraft; an AIRMET of weather that matters to small aircraft and to flying without instruments. "From 60 to 180 nm out" is measured along the route from ILI.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 UTC · at 120 knots true airspeed
The westbound cruising heights for this course (VFR: even thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 4 forecast points nearest it (AKN, EHM, CDB, IKO). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 4,500 ft | 230° at 19 kt | +19 kt | 101 kt | 5 h 08 min | 10:56 pm AKDT (06:56 UTC) | |
| 6,500 ft | 240° at 20 kt | +20 kt | -8 °C | 100 kt | 5 h 11 min | 10:59 pm AKDT (06:59 UTC) |
| 8,500 ft | 240° at 21 kt | +20 kt | -12 °C | 100 kt | 5 h 11 min | 10:59 pm AKDT (06:59 UTC) |
| 10,500 ft | 240° at 21 kt | +20 kt | -16 °C | 100 kt | 5 h 11 min | 10:59 pm AKDT (06:59 UTC) |
| 12,500 ft | 230° at 21 kt | +21 kt | -21 °C | 99 kt | 5 h 14 min | 11:02 pm AKDT (07:02 UTC) |
| 14,500 ft | 230° at 21 kt | +21 kt | -24 °C | 99 kt | 5 h 14 min | 11:02 pm AKDT (07:02 UTC) |
| 16,500 ft | 230° at 22 kt | +22 kt | -28 °C | 98 kt | 5 h 17 min | 11:05 pm AKDT (07:05 UTC) |
| 18,000 ft FL180 | 230° at 22 kt | +22 kt | -30 °C | 98 kt | 5 h 17 min | 11:05 pm AKDT (07:05 UTC) |
| 24,000 ft FL240 | 230° at 19 kt | +18 kt | -39 °C | 102 kt | 5 h 05 min | 10:53 pm AKDT (06:53 UTC) |
| 30,000 ft FL300 | 260° at 18 kt | +16 kt | -46 °C | 104 kt | 4 h 59 min | 10:47 pm AKDT (06:47 UTC) |
| 34,000 ft FL340 | 240° at 29 kt | +28 kt | -50 °C | 92 kt | 5 h 38 min | 11:26 pm AKDT (07:26 UTC) |
| 39,000 ft FL390 | 240° at 45 kt | +44 kt | -47 °C | 76 kt | 6 h 49 min | 12:37 am AKDT (08:37 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; a height is left out when the forecast has no wind for it over most of the line (the ground is higher). Ground speed is the airspeed less the headwind; the time en route is for the straight line and ignores climb, descent and routing around weather.
The forecast points as issued
| Point | From | 3,000 | 6,000 | 9,000 | 12,000 | 18,000 | 24,000 | 30,000 | 34,000 | 39,000 |
|---|---|---|---|---|---|---|---|---|---|---|
| AKN | used from 0 nm out; 60 nm from the line | 230/20 | 230/19 -6° | 230/21 -12° | 230/19 -19° | 220/17 -31° | 200/15 -41° | 240/29 -47° | 240/40 -49° | 240/48 -46° |
| EHM | used from 199 nm out; 94 nm from the line | 230/19 | 230/21 -7° | 230/20 -13° | 220/22 -20° | 210/29 -31° | 220/30 -40° | 280/44 -46° | 270/43 -50° | 240/39 -50° |
| CDB | used from 249 nm out; 103 nm from the line | 230/16 | 240/21 -7° | 240/21 -13° | 240/22 -20° | 240/26 -29° | 250/23 -37° | 280/8 -45° | 230/19 -51° | 230/44 -48° |
| IKO | used from 498 nm out; 110 nm from the line | 260/21 | 260/22 -7° | 250/22 -14° | 250/22 -21° | 240/24 -31° | 230/16 -40° | 200/14 -46° | 230/24 -47° | 240/38 -46° |
The weather now: both ends and the airports along the way public airports with a weather report within 25 nm of the line, one for each stretch
| Airport | Where | Conditions | Wind | Visibility | Ceiling | Elevation | Reported |
|---|---|---|---|---|---|---|---|
| ILI Iliamna, AK | departure | VFR Sky: a few clouds at 1,500 feet, a broken layer at 3,400 feet, overcast at 5,500 feet Weather: light rain, mist | from the southwest (220°) at 8 knots | 6 mi | 3,400 ft | 192 ft | 5:12 pm AKDT (01:12 UTC) |
| IGG Igiugig, AK | 40 nm out, 2 nm southeast of the line | VFR Sky: a few clouds at 3,900 feet, a broken layer at 4,900 feet, a broken layer at 6,500 feet Weather: light rain | from the south (170°) at 8 knots | 10+ mi | 4,900 ft | 90 ft | 00:56 UTC |
| AKN King Salmon, AK | 80 nm out, 18 nm southeast of the line, tower | VFR Sky: a few clouds at 1,600 feet, scattered clouds at 2,500 feet, a broken layer at 3,400 feet Weather: light rain | from the southwest (230°) at 8 knots | 10+ mi | 3,400 ft | 73 ft | 00:56 UTC |
| 7AK Akutan, AK | 488 nm out, 15 nm southeast of the line | reported, no category | from the south-southwest (200°) at 9 knots | 6,000 ft | 129 ft | 00:55 UTC | |
| DUT Unalaska, AK | destination | VFR Sky: a few clouds at 2,900 feet, a broken layer at 5,500 feet | from the southwest (230°) at 18 knots, gusting to 21 | 10+ mi | 5,500 ft | 23 ft | 4:56 pm AKDT (00:56 UTC) |
The highest airport on this list sits at 192 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At DUT when you get there the forecast at the estimated arrival, 10:47 pm AKDT (06:47 UTC)
Wind from the southwest at 10 knots, visibility more than 6 miles, light rain showers, scattered clouds at 2,500 feet, a broken layer at 3,500 feet VFR
The whole forecast for DUT
- From Sun 4:00 pm AKDT (00:00 UTC): wind from the southwest at 10 knots, visibility more than 6 miles, light rain showers, scattered clouds at 2,500 feet, a broken layer at 3,500 feet
- At times between Sun 4:00 pm AKDT (00:00 UTC) and 8:00 pm AKDT (04:00 UTC): wind from the southwest at 14 knots, gusting to 23
The forecast for ILI, the departure
- From Sun 4:00 pm AKDT (00:00 UTC): wind from the south-southwest at 6 knots, visibility 6 miles, light rain showers, mist, scattered clouds at 1,500 feet, overcast at 2,500 feet
- From Sun 11:00 pm AKDT (07:00 UTC): wind from the south-southwest at 5 knots, visibility 6 miles, mist, scattered clouds at 900 feet, overcast at 1,500 feet
- From Mon 4:00 am AKDT (12:00 UTC): wind from the south-southwest at 4 knots, visibility more than 6 miles, showers nearby, overcast at 2,500 feet
- From Mon 9:00 am AKDT (17:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 3,000 feet, overcast at 5,000 feet
Temporary flight restrictions on the line or within 25 nm of it
No temporary flight restriction on or near this route right now.
Daylight
Sunset at ILI 7:19 pm AKDT (03:19 UTC), at DUT 8:15 pm AKDT (04:15 UTC) (civil twilight ends 8:51 pm AKDT (04:51 UTC)). At 120 knots the arrival at DUT is after sunset there (8:18 pm AKDT (04:18 UTC)).
Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (closed runways, lights out) are not shown: the FAA's notice search is not open to sites like this one at this time.
Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads
Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft, observations and terminal forecasts), the National Weather Service radar, the Weather Prediction Center's charts, the FAA's temporary flight restriction list and shapes, and the FAA's airport file for the positions, elevations and magnetic variation. Fetched when the page is viewed and kept a few minutes. Each leg is the straight line between its two airports; airways, terrain and airspace are not considered. The airports in detail: Iliamna Airport, Unalaska Airport.