Rickenbacker International to Guam International LCK → GUM
6,645 nautical miles (7,647 statute miles) northwest on a straight line, true course 310°, about 317° magnetic at the departure end (variation 7W). At 120 knots that is 49 h 35 min at the quickest height in today's winds (18,000 ft, a 14-knot tailwind), arriving about 11:31 pm ChST (13:31 UTC), after sunset at the destination. 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
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 160 nm of the route.
- AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 630 to 1009 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 909 to 999 nm out.
- AIRMET ZULU 2C: moderate icing up to 18,000 ft. Near the route, 1009 nm along the route.
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 LCK.
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 08:00–15:00 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 18 forecast points nearest it (CMH, FWA, MKG, JOT, GRB, LSE, MSP, AXN, GFK, MOT, GGW, GTF, GPI, GEG, SEA, AST, CAR, 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 | 330° at 2 kt | 0 | -1 °C | 120 kt | 55 h 22 min | 5:18 am ChST (19:18 UTC) |
| 6,500 ft | 330° at 5 kt | −1 kt | 2 °C | 121 kt | 54 h 55 min | 4:51 am ChST (18:51 UTC) |
| 8,500 ft | 340° at 10 kt | −3 kt | 0 °C | 123 kt | 54 h 01 min | 3:57 am ChST (17:57 UTC) |
| 10,500 ft | 350° at 16 kt | −7 kt | -1 °C | 127 kt | 52 h 19 min | 2:15 am ChST (16:15 UTC) |
| 12,500 ft | 350° at 23 kt | −10 kt | -4 °C | 130 kt | 51 h 07 min | 1:03 am ChST (15:03 UTC) |
| 14,500 ft | 350° at 27 kt | −11 kt | -7 °C | 131 kt | 50 h 44 min | 12:40 am ChST (14:40 UTC) |
| 16,500 ft | 350° at 32 kt | −13 kt | -11 °C | 133 kt | 49 h 58 min | 11:54 pm ChST (13:54 UTC) |
| 18,000 ft FL180 | 350° at 36 kt | −14 kt | -14 °C | 134 kt | 49 h 35 min | 11:31 pm ChST (13:31 UTC) |
| 24,000 ft FL240 | 340° at 40 kt | −9 kt | -25 °C | 129 kt | 51 h 31 min | 1:27 am ChST (15:27 UTC) |
| 30,000 ft FL300 | 340° at 41 kt | −10 kt | -39 °C | 130 kt | 51 h 07 min | 1:03 am ChST (15:03 UTC) |
| 34,000 ft FL340 | 340° at 45 kt | −7 kt | -47 °C | 127 kt | 52 h 19 min | 2:15 am ChST (16:15 UTC) |
| 39,000 ft FL390 | 320° at 33 kt | +6 kt | -47 °C | 114 kt | 58 h 17 min | 8:13 am ChST (22:13 UTC) |
Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| CMH | used from 0 nm out; 22 nm from the line | 320/12 | 340/26 15° | 340/22 9° | 320/24 3° | 320/32 -7° | 320/36 -20° | 330/42 -35° | 320/59 -44° | 320/57 -50° |
| FWA | used from 50 nm out; 51 nm from the line | 270/20 | 300/16 15° | 290/14 10° | 280/17 3° | 290/25 -7° | 280/30 -19° | 280/34 -35° | 290/48 -44° | 300/64 -52° |
| MKG | used from 200 nm out; 67 nm from the line | 260/28 | 260/18 15° | 250/16 9° | 260/22 4° | 280/31 -9° | 270/35 -21° | 270/44 -35° | 270/42 -45° | 290/61 -51° |
| JOT | used from 250 nm out; 71 nm from the line | 250/25 | 260/22 14° | 250/17 9° | 270/21 5° | 280/28 -8° | 280/36 -20° | 270/41 -35° | 280/57 -42° | 290/65 -50° |
| GRB | used from 300 nm out; 84 nm from the line | 250/32 | 250/22 17° | 240/18 8° | 280/21 6° | 280/34 -11° | 280/35 -21° | 280/39 -37° | 270/52 -45° | 290/60 -49° |
| LSE | used from 350 nm out; 75 nm from the line | 250/25 | 240/21 17° | 240/28 11° | 250/28 5° | 280/24 -10° | 280/31 -21° | 260/35 -37° | 270/45 -43° | 280/59 -47° |
| MSP | used from 500 nm out; 34 nm from the line | 250/12 | 250/17 17° | 240/26 12° | 250/26 5° | 280/26 -9° | 280/32 -22° | 270/37 -38° | 280/47 -41° | 280/55 -48° |
| AXN | used from 600 nm out; 40 nm from the line | 110/6 | 260/10 16° | 240/17 12° | 250/20 5° | 260/29 -10° | 260/35 -22° | 260/29 -38° | 270/48 -41° | 270/61 -48° |
| GFK | used from 749 nm out; 48 nm from the line | 080/18 | L/V 11° | 260/22 7° | 250/48 3° | 260/51 -11° | 250/44 -22° | 260/34 -38° | 260/53 -44° | 270/66 -49° |
| MOT | used from 849 nm out; 64 nm from the line | 120/14 4° | 190/25 5° | 220/41 1° | 240/43 -11° | 230/39 -22° | 220/44 -38° | 240/62 -42° | 250/73 -48° | |
| GGW | used from 1049 nm out; 120 nm from the line | 100/7 -1° | 070/10 -3° | 190/6 -4° | 210/34 -10° | 230/33 -24° | 210/48 -37° | 230/65 -40° | 230/71 -46° | |
| GTF | used from 1299 nm out; 219 nm from the line | L/V | L/V -7° | 240/8 -8° | 240/30 -14° | 240/40 -28° | 210/52 -38° | 210/76 -38° | 220/72 -43° | |
| GPI | used from 1349 nm out; 210 nm from the line | 090/8 -4° | 140/7 -7° | 090/10 -8° | 110/10 -19° | 210/25 -30° | 200/24 -40° | 210/31 -39° | 210/35 -42° | |
| GEG | used from 1649 nm out; 313 nm from the line | 060/7 -2° | 070/12 -6° | 050/8 -8° | 120/11 -21° | 110/18 -33° | 030/22 -37° | 040/6 -38° | 240/7 -41° | |
| SEA | used from 1699 nm out; 332 nm from the line | 350/5 | 010/6 0° | 010/9 -4° | 010/27 -6° | 010/51 -15° | 360/58 -26° | 360/60 -41° | 350/55 -48° | 340/30 -45° |
| AST | used from 2398 nm out; 773 nm from the line | L/V | 340/6 1° | 350/17 -2° | 360/32 -3° | 360/50 -14° | 350/55 -26° | 350/58 -40° | 350/62 -49° | 340/40 -47° |
| CAR | used from 4047 nm out; 2773 nm from the line | 300/29 | 280/23 8° | 280/33 4° | 280/40 -1° | 280/40 -14° | 300/46 -24° | 290/44 -41° | 270/57 -50° | 260/73 -54° |
| AST | used from 4097 nm out; 2381 nm from the line | L/V | 340/6 1° | 350/17 -2° | 360/32 -3° | 360/50 -14° | 350/55 -26° | 350/58 -40° | 350/62 -49° | 340/40 -47° |
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 |
|---|---|---|---|---|---|---|---|
| LCK Columbus, OH | departure | no report just now | 743 ft | ||||
| EKM Elkhart, IN | 180 nm out, 2 nm north of the line, tower | no report just now | 777 ft | ||||
| FAR Fargo, ND | 739 nm out, 1 nm northeast of the line, tower | no report just now | 901 ft | ||||
| GSN Saipan Island, MP | 6535 nm out, 17 nm northwest of the line, tower | no report just now | 214 ft | ||||
| GUM Tamuning, GU | destination | no report just now | 305 ft |
The highest airport on this list sits at 901 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At GUM when you get there the forecast at the estimated arrival, 11:31 pm ChST (13:31 UTC)
GUM has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/6656 ANOKA, MN, Monday, October 5, 2026 through Monday, October 19, 2026 Local 12 nm from the route, 560 nm along the route · security · until 19 October · ZMP
- 6/4143 ANDERSEN AFB, GU, Monday, March 9, 2026 through Tuesday, March 9, 2027 Local on the route, at the destination end · security · until 9 March · ZUA
- 6/2520 S. FINEGAYAN, GU 4 nm from the route, at the destination end · security · ZUA
Daylight
Sunset at LCK 6:57 pm EDT (22:57 UTC), at GUM 6:03 pm ChST (08:03 UTC) (civil twilight ends 6:24 pm ChST (08:24 UTC)). At 120 knots the arrival at GUM is before sunrise there (6:11 am ChST (20:11 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: Rickenbacker International, Guam International.