Guam International to Palau International GUM → ROR
708 nautical miles (815 statute miles) southwest on a straight line, true course 240°, about 238° magnetic at the departure end (variation 2E). At 120 knots that is 4 h 03 min at the quickest height in today's winds (24,000 ft, a 55-knot tailwind), arriving about 1:35 pm +09 (04:35 UTC). Right now GUM is VFR, wind from the southwest (230°) at 5 knots; ROR is marginal VFR, wind from the east (100°) 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: 632 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
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 1 forecast point nearest it (AST). 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 | 030° at 13 kt | −11 kt | 131 kt | 5 h 24 min | 2:56 pm +09 (05:56 UTC) | |
| 6,500 ft | 030° at 16 kt | −14 kt | 1 °C | 134 kt | 5 h 17 min | 2:49 pm +09 (05:49 UTC) |
| 8,500 ft | 020° at 22 kt | −17 kt | -3 °C | 137 kt | 5 h 10 min | 2:42 pm +09 (05:42 UTC) |
| 10,500 ft | 010° at 27 kt | −19 kt | -6 °C | 139 kt | 5 h 06 min | 2:38 pm +09 (05:38 UTC) |
| 12,500 ft | 010° at 35 kt | −23 kt | -9 °C | 143 kt | 4 h 57 min | 2:29 pm +09 (05:29 UTC) |
| 14,500 ft | 010° at 45 kt | −30 kt | -11 °C | 150 kt | 4 h 43 min | 2:15 pm +09 (05:15 UTC) |
| 16,500 ft | 010° at 56 kt | −37 kt | -14 °C | 157 kt | 4 h 31 min | 2:03 pm +09 (05:03 UTC) |
| 18,000 ft FL180 | 010° at 64 kt | −42 kt | -16 °C | 162 kt | 4 h 22 min | 1:54 pm +09 (04:54 UTC) |
| 24,000 ft FL240 | 010° at 84 kt | −55 kt | -25 °C | 175 kt | 4 h 03 min | 1:35 pm +09 (04:35 UTC) |
| 30,000 ft FL300 | 360° at 89 kt | −46 kt | -39 °C | 166 kt | 4 h 16 min | 1:48 pm +09 (04:48 UTC) |
| 34,000 ft FL340 | 360° at 71 kt | −37 kt | -44 °C | 157 kt | 4 h 31 min | 2:03 pm +09 (05:03 UTC) |
| 39,000 ft FL390 | 350° at 33 kt | −12 kt | -45 °C | 132 kt | 5 h 22 min | 2:54 pm +09 (05:54 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; 4901 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° |
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 1,400 feet, scattered clouds at 3,400 feet, a broken layer at 8,000 feet | from the southwest (230°) at 5 knots | 10+ mi | 8,000 ft | 305 ft | 9:54 am ChST (23:54 UTC) |
| T11 Yap Island, | 459 nm out, 4 nm southwest of the line | VFR Sky: a few clouds at 1,600 feet, a broken layer at 30,000 feet | variable at 5 knots | 12 mi | 30,000 ft | 90 ft | 23:52 UTC |
| ROR Babelthuap Island, | destination | marginal VFR Sky: scattered clouds at 1,700 feet, a broken layer at 12,000 feet, a broken layer at 30,000 feet Weather: haze | from the east (100°) at 5 knots | 5 mi | 12,000 ft | 176 ft | 8:50 am +09 (23:50 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 ROR when you get there the forecast at the estimated arrival, 1:35 pm +09 (04:35 UTC)
Wind light and variable, visibility 6 miles, haze, a few clouds at 1,700 feet VFR
The whole forecast for ROR
- From Mon 9:00 am +09 (00:00 UTC): wind light and variable, visibility 6 miles, haze, a few clouds at 1,700 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
- 6/4143 ANDERSEN AFB, GU, Monday, March 9, 2026 through Tuesday, March 9, 2027 Local 3 nm from the route, at the departure end · security · until 9 March · ZUA
- 6/2520 S. FINEGAYAN, GU 4 nm from the route, at the departure end · security · ZUA
Daylight
Sunset at GUM 6:03 pm ChST (08:03 UTC), at ROR 5:48 pm +09 (08:48 UTC) (civil twilight ends 6:09 pm +09 (09:09 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, Palau International.