Guam International to Ted Stevens Anchorage International GUM → ANC
3,985 nautical miles (4,585 statute miles) northeast on a straight line, true course 029°, about 027° magnetic at the departure end (variation 2E). At 120 knots that is 35 h 54 min at the quickest height in today's winds (3,500 ft, a 9-knot headwind), arriving about 5:17 am AKDT (13:17 UTC), after sunset at the destination. Right now GUM is VFR, wind from the west (280°) at 8 knots; ANC is marginal VFR, wind from the northwest (320°) at 5 knots. 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: 65 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 GUM.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- C208 climbing, 27 nm southeast, 11:00 am ChST (01:00 UTC): light chop turbulence. At the destination end, 27 nm southeast of the line.
as filed, and in English
ENA UA /OV 5S ENA/TM 0100/FLDURC/TP C208/TB LGT CHOP
- Report
- a routine report filed through ENA
- Where
- 5S ena
- Time
- 01:00 UTC
- Height
- during the climb
- Aircraft
- C208
- Turbulence
- light chop
- MU2 at 7,000 ft, 15 nm south, 11:16 am ChST (01:16 UTC): no turbulence, no icing, remarks: during the climb. At the destination end, 15 nm south of the line.
as filed, and in English
ANC UA /OV TED190020/TM 0116/FL070/TP MU2/SK BASES 040 TOPS 050 CLR ABV/TB NEG/IC NEG/RM DURC
- Report
- a routine report filed through ANC
- Where
- 20 nm south (190°) of TED
- Time
- 01:16 UTC
- Height
- at 7,000 ft
- Aircraft
- MU2
- Sky
- bases 4,000 ft tops 5,000 ft clear above
- Turbulence
- none
- Icing
- none
- Remarks
- during the climb
- C172 at 900 ft, 5 nm northeast, 11:17 am ChST (01:17 UTC): no turbulence, a few clouds above 900 ft. At the destination end, 5 nm northeast of the line.
as filed, and in English
MRI UA /OV MRI/TM 0117/FL009/TP C172/SK FEW009/TB NEG
- Report
- a routine report filed through MRI
- Where
- over MRI
- Time
- 01:17 UTC
- Height
- at 900 ft
- Aircraft
- C172
- Sky
- a few clouds from 900 ft
- Turbulence
- none
- C207 at 1,200 ft, 4 nm north, 11:16 am ChST (01:16 UTC): no turbulence, no icing, a broken layer above 1,200 ft. At the destination end, 4 nm north of the line.
as filed, and in English
MRI UA /OV MRI275004/TM 0116/FL012/TP C207/SK BKN012/TB NEG/IC NEG
- Report
- a routine report filed through MRI
- Where
- 4 nm west (275°) of MRI
- Time
- 01:16 UTC
- Height
- at 1,200 ft
- Aircraft
- C207
- Sky
- a broken layer from 1,200 ft
- Turbulence
- none
- Icing
- none
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 eastbound cruising heights for this course (VFR: odd 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 (AST, CAR, AST, SEA). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 3,500 ft | 020° at 11 kt | +9 kt | 111 kt | 35 h 54 min | 5:17 am AKDT (13:17 UTC) | |
| 5,500 ft | 020° at 13 kt | +12 kt | 108 kt | 36 h 54 min | 6:17 am AKDT (14:17 UTC) | |
| 7,500 ft | 020° at 17 kt | +16 kt | -1 °C | 104 kt | 38 h 19 min | 7:42 am AKDT (15:42 UTC) |
| 9,500 ft | 020° at 22 kt | +20 kt | -5 °C | 100 kt | 39 h 51 min | 9:14 am AKDT (17:14 UTC) |
| 11,500 ft | 010° at 28 kt | +24 kt | -7 °C | 96 kt | 41 h 31 min | 10:54 am AKDT (18:54 UTC) |
| 13,500 ft | 010° at 38 kt | +32 kt | -10 °C | 88 kt | 45 h 17 min | 2:40 pm AKDT (22:40 UTC) |
| 15,500 ft | 010° at 49 kt | +41 kt | -13 °C | 79 kt | 50 h 27 min | 7:50 pm AKDT (03:50 UTC) |
| 17,500 ft | 010° at 60 kt | +50 kt | -15 °C | 70 kt | 56 h 56 min | 2:19 am AKDT (10:19 UTC) |
| 18,000 ft FL180 | 010° at 63 kt | +53 kt | -16 °C | 67 kt | 59 h 29 min | 4:52 am AKDT (12:52 UTC) |
| 24,000 ft FL240 | 010° at 83 kt | +68 kt | -25 °C | 52 kt | 76 h 38 min | 10:01 pm AKDT (06:01 UTC) |
| 30,000 ft FL300 | 360° at 88 kt | +63 kt | -39 °C | 57 kt | 69 h 55 min | 3:18 pm AKDT (23:18 UTC) |
| 34,000 ft FL340 | 360° at 70 kt | +51 kt | -44 °C | 69 kt | 57 h 45 min | 3:08 am AKDT (11:08 UTC) |
| 39,000 ft FL390 | 350° at 33 kt | +19 kt | -45 °C | 101 kt | 39 h 27 min | 8:50 am AKDT (16:50 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| AST | used from 0 nm out; 4853 nm from the line | 020/11 | 030/15 2° | 020/23 -4° | 010/32 -8° | 010/64 -16° | 010/84 -25° | 360/89 -39° | 360/71 -44° | 350/33 -45° |
| CAR | used from 2846 nm out; 2573 nm from the line | 260/47 | 280/36 12° | 270/32 7° | 260/32 1° | 270/31 -15° | 270/47 -25° | 270/100 -36° | 270/112 -46° | 270/128 -57° |
| AST | used from 2896 nm out; 2131 nm from the line | 020/11 | 030/15 2° | 020/23 -4° | 010/32 -8° | 010/64 -16° | 010/84 -25° | 360/89 -39° | 360/71 -44° | 350/33 -45° |
| SEA | used from 3495 nm out; 1621 nm from the line | 360/9 | 350/10 1° | 010/10 -5° | 030/20 -11° | 020/60 -17° | 010/86 -26° | 360/90 -40° | 010/68 -42° | 360/31 -43° |
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 |
|---|---|---|---|---|---|---|---|
| GUM Tamuning, GU | departure | VFR Sky: a few clouds at 10,000 feet | from the west (280°) at 8 knots | 10+ mi | none | 305 ft | 10:54 am ChST (00:54 UTC) |
| GSN Saipan Island, MP | 110 nm out, 2 nm northeast of the line, tower | VFR Sky: scattered clouds at 1,900 feet, scattered clouds at 2,900 feet Weather: light rain | from the south-southwest (200°) at 4 knots | 10+ mi | none | 214 ft | 00:54 UTC |
| PBV St George, AK | 3315 nm out, 3 nm east of the line | VFR | from the west-southwest (250°) at 11 knots | 10+ mi | none | 127 ft | 00:53 UTC |
| PTU Platinum, AK | 3605 nm out, 5 nm north of the line | VFR Sky: scattered clouds at 1,600 feet, scattered clouds at 2,500 feet, a broken layer at 3,400 feet | from the south-southwest (210°) at 11 knots | 9 mi | 3,400 ft | 18 ft | 00:56 UTC |
| ANC Anchorage, AK | destination | marginal VFR Sky: a broken layer at 3,000 feet, overcast at 4,200 feet | from the northwest (320°) at 5 knots | 10+ mi | 3,000 ft | 151 ft | 4:53 pm AKDT (00:53 UTC) |
The highest airport on this list sits at 305 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At ANC when you get there the forecast at the estimated arrival, 5:17 am AKDT (13:17 UTC)
Wind from the south-southeast at 7 knots, visibility more than 6 miles, scattered clouds at 2,000 feet, a broken layer at 4,000 feet VFR
The whole forecast for ANC
- From Sun 4:00 pm AKDT (00:00 UTC): wind from the south-southwest at 6 knots, visibility 6 miles, light rain, scattered clouds at 1,500 feet, overcast at 3,500 feet
- At times between Sun 4:00 pm AKDT (00:00 UTC) and 6:00 pm AKDT (02:00 UTC): visibility 3 miles, light rain, mist, a broken layer at 1,500 feet
- From Sun 6:00 pm AKDT (02:00 UTC): wind from the south at 10 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 4,000 feet
- At times between Sun 6:00 pm AKDT (02:00 UTC) and 10:00 pm AKDT (06:00 UTC): a broken layer at 2,500 feet
- From Sun 10:00 pm AKDT (06:00 UTC): wind from the south-southeast at 6 knots, visibility more than 6 miles, showers nearby, a broken layer at 2,500 feet
- From Mon 7:00 am AKDT (15:00 UTC): wind from the south-southeast at 4 knots, visibility 6 miles, mist, showers nearby, scattered clouds at 500 feet, a broken layer at 1,500 feet
- From Mon 12:00 pm AKDT (20:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, scattered clouds at 2,000 feet, a broken layer at 4,000 feet
The forecast for GUM, the departure
- From Mon 10:00 am ChST (00:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, showers nearby, a few clouds at 1,500 feet, scattered clouds at 2,500 feet and more above
Temporary flight restrictions on the line or within 25 nm of it
- 6/2520 S. FINEGAYAN, GU 4 nm from the route, at the departure end · security · ZUA
- 6/4143 ANDERSEN AFB, GU, Monday, March 9, 2026 through Tuesday, March 9, 2027 Local on the route, at the departure end · security · until 9 March · ZUA
- 6/8889 Anchorage, AK, Tuesday, October 13, 2026 through Tuesday, October 13, 2026 Local on the route, at the destination end · a VIP movement · starts tomorrow · ZAN
- 6/8772 Anchorage, AK, Tuesday, October 13, 2026 through Tuesday, October 13, 2026 Local 4 nm from the route, at the destination end · security · starts tomorrow · ZAN
Daylight
Sunset at GUM 6:03 pm ChST (08:03 UTC), at ANC 6:57 pm AKDT (02:57 UTC) (civil twilight ends 7:40 pm AKDT (03:40 UTC)). At 120 knots the arrival at ANC is before sunrise there (8:36 am AKDT (16:36 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: Guam International, Ted Stevens Anchorage International.