Guam International to Chicago O'Hare International GUM → ORD
6,387 nautical miles (7,350 statute miles) northeast on a straight line, true course 038°, about 036° magnetic at the departure end (variation 2E). At 120 knots that is 51 h 30 min at the quickest height in today's winds (39,000 ft, a 4-knot tailwind), arriving about 9:31 am CDT (14:31 UTC). 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 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 5558 to 6008 nm out.
- AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the route from 5558 to 5618 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 5628 to 5698 nm out.
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 08:00–15:00 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 16 forecast points nearest it (AST, CAR, AST, SEA, GEG, GPI, GTF, GGW, MOT, GFK, ABR, AXN, MSP, LSE, DBQ, JOT). 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 | 300° at 2 kt | −1 kt | 121 kt | 52 h 47 min | 10:48 am CDT (15:48 UTC) | |
| 5,500 ft | 340° at 3 kt | +1 kt | -1 °C | 119 kt | 53 h 40 min | 11:41 am CDT (16:41 UTC) |
| 7,500 ft | 340° at 7 kt | +3 kt | 1 °C | 117 kt | 54 h 35 min | 12:36 pm CDT (17:36 UTC) |
| 9,500 ft | 350° at 13 kt | +5 kt | -1 °C | 115 kt | 55 h 32 min | 1:33 pm CDT (18:33 UTC) |
| 11,500 ft | 350° at 20 kt | +9 kt | -3 °C | 111 kt | 57 h 32 min | 3:33 pm CDT (20:33 UTC) |
| 13,500 ft | 350° at 26 kt | +12 kt | -6 °C | 108 kt | 59 h 08 min | 5:09 pm CDT (22:09 UTC) |
| 15,500 ft | 350° at 30 kt | +14 kt | -9 °C | 106 kt | 60 h 15 min | 6:16 pm CDT (23:16 UTC) |
| 17,500 ft | 350° at 35 kt | +16 kt | -13 °C | 104 kt | 61 h 25 min | 7:26 pm CDT (00:26 UTC) |
| 18,000 ft FL180 | 350° at 36 kt | +16 kt | -14 °C | 104 kt | 61 h 25 min | 7:26 pm CDT (00:26 UTC) |
| 24,000 ft FL240 | 340° at 41 kt | +11 kt | -26 °C | 109 kt | 58 h 36 min | 4:37 pm CDT (21:37 UTC) |
| 30,000 ft FL300 | 340° at 42 kt | +12 kt | -40 °C | 108 kt | 59 h 08 min | 5:09 pm CDT (22:09 UTC) |
| 34,000 ft FL340 | 340° at 46 kt | +9 kt | -47 °C | 111 kt | 57 h 32 min | 3:33 pm CDT (20:33 UTC) |
| 39,000 ft FL390 | 320° at 33 kt | −4 kt | -47 °C | 124 kt | 51 h 30 min | 9:31 am CDT (14:31 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| AST | used from 0 nm out; 4852 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 2549 nm out; 2797 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 2599 nm out; 2277 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° |
| SEA | used from 4298 nm out; 668 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° |
| GEG | used from 4948 nm out; 278 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° | |
| GPI | used from 5048 nm out; 227 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° | |
| GTF | used from 5298 nm out; 180 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° | |
| GGW | used from 5348 nm out; 159 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° | |
| MOT | used from 5598 nm out; 89 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° | |
| GFK | used from 5798 nm out; 94 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° |
| ABR | used from 5848 nm out; 73 nm from the line | 080/12 | 210/12 17° | 220/22 12° | 230/26 5° | 220/28 -10° | 230/41 -21° | 250/36 -36° | 260/47 -39° | 260/63 -47° |
| AXN | used from 5898 nm out; 68 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° |
| MSP | used from 6047 nm out; 28 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° |
| LSE | used from 6147 nm out; 30 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° |
| DBQ | used from 6247 nm out; 51 nm from the line | 250/27 | 260/23 17° | 240/26 10° | 260/30 4° | 280/26 -9° | 280/36 -21° | 270/41 -36° | 280/52 -41° | 290/67 -48° |
| JOT | used from 6347 nm out; 40 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° |
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 | no report just now | 305 ft | ||||
| GSN Saipan Island, MP | 110 nm out, 18 nm northwest of the line, tower | no report just now | 214 ft | ||||
| CYZP Sandspit, | 4518 nm out, 9 nm north of the line | no report just now | 21 ft | ||||
| MOT Minot, ND | 5708 nm out, 24 nm northeast of the line, tower | no report just now | 1,715 ft | ||||
| JVL Janesville, WI | 6327 nm out, 4 nm northwest of the line, tower | no report just now | 807 ft | ||||
| ORD Chicago, IL | destination | no report just now | 680 ft |
The highest airport on this list sits at 1,715 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At ORD when you get there the forecast at the estimated arrival, 9:31 am CDT (14:31 UTC)
ORD has no terminal forecast; use the nearest airport that does.
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
Daylight
Sunset at GUM 6:03 pm ChST (08:03 UTC), at ORD 6:15 pm CDT (23:15 UTC) (civil twilight ends 6:43 pm CDT (23:43 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, Chicago O'Hare International.