Yampa Valley Airport to General Edward Lawrence Logan International HDN → BOS
1,622 nautical miles (1,866 statute miles) east on a straight line, true course 074°, about 064° magnetic at the departure end (variation 10E). At 120 knots that is 9 h 13 min at the quickest height in today's winds (39,000 ft, a 56-knot tailwind), arriving about 6:17 am EDT (10:17 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: 81 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 TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the first 30 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 249 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 129 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 50 nm of the route.
- 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 route from 1065 to 1114 nm out.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 348 nm of the route.
- AIRMET ZULU 1C: moderate icing up to 24,000 ft. Over the last 328 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 328 nm of the route.
- 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 last 269 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1353 to 1532 nm out.
- AIRMET TANGO 2W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Near the route, 1373 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 HDN.
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 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 14 forecast points nearest it (DEN, BFF, ONL, OMA, DSM, MCW, DBQ, MKG, CLE, BUF, SYR, ALB, BDL, BOS). 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 | 190° at 16 kt | −4 kt | 124 kt | 13 h 05 min | 10:09 am EDT (14:09 UTC) | |
| 5,500 ft | 210° at 12 kt | −6 kt | 17 °C | 126 kt | 12 h 52 min | 9:56 am EDT (13:56 UTC) |
| 7,500 ft | 220° at 14 kt | −11 kt | 12 °C | 131 kt | 12 h 23 min | 9:27 am EDT (13:27 UTC) |
| 9,500 ft | 230° at 15 kt | −14 kt | 9 °C | 134 kt | 12 h 06 min | 9:10 am EDT (13:10 UTC) |
| 11,500 ft | 250° at 14 kt | −14 kt | 5 °C | 134 kt | 12 h 06 min | 9:10 am EDT (13:10 UTC) |
| 13,500 ft | 250° at 16 kt | −16 kt | 1 °C | 136 kt | 11 h 56 min | 9:00 am EDT (13:00 UTC) |
| 15,500 ft | 250° at 18 kt | −18 kt | -3 °C | 138 kt | 11 h 45 min | 8:49 am EDT (12:49 UTC) |
| 17,500 ft | 260° at 20 kt | −20 kt | -8 °C | 140 kt | 11 h 35 min | 8:39 am EDT (12:39 UTC) |
| 18,000 ft FL180 | 260° at 20 kt | −20 kt | -9 °C | 140 kt | 11 h 35 min | 8:39 am EDT (12:39 UTC) |
| 24,000 ft FL240 | 260° at 27 kt | −26 kt | -20 °C | 146 kt | 11 h 07 min | 8:11 am EDT (12:11 UTC) |
| 30,000 ft FL300 | 260° at 36 kt | −35 kt | -35 °C | 155 kt | 10 h 28 min | 7:32 am EDT (11:32 UTC) |
| 34,000 ft FL340 | 260° at 47 kt | −46 kt | -42 °C | 166 kt | 9 h 46 min | 6:50 am EDT (10:50 UTC) |
| 39,000 ft FL390 | 260° at 58 kt | −56 kt | -50 °C | 176 kt | 9 h 13 min | 6:17 am EDT (10:17 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DEN | used from 0 nm out; 102 nm from the line | 190/31 16° | 210/32 7° | 240/41 -8° | 230/47 -21° | 240/56 -32° | 250/65 -37° | 250/61 -47° | ||
| BFF | used from 100 nm out; 68 nm from the line | 120/24 | 180/31 13° | 210/26 7° | 230/25 -7° | 240/41 -20° | 230/52 -36° | 250/56 -41° | 260/57 -45° | |
| ONL | used from 299 nm out; 82 nm from the line | 200/20 17° | 230/26 14° | 240/21 7° | 250/27 -9° | 260/32 -19° | 240/44 -34° | 240/56 -41° | 250/62 -51° | |
| OMA | used from 448 nm out; 73 nm from the line | 190/34 | 230/34 19° | 250/25 12° | 250/18 6° | 250/22 -7° | 250/28 -19° | 260/34 -32° | 260/39 -41° | 280/56 -51° |
| DSM | used from 547 nm out; 74 nm from the line | 200/32 | 240/27 17° | 260/19 10° | 260/16 5° | 260/19 -7° | 240/22 -19° | 270/20 -32° | 270/38 -42° | 290/58 -53° |
| MCW | used from 597 nm out; 38 nm from the line | 200/35 | 240/33 18° | 250/20 10° | 260/10 6° | 270/18 -8° | 260/28 -19° | 280/30 -34° | 290/49 -43° | 280/70 -54° |
| DBQ | used from 697 nm out; 37 nm from the line | 220/23 | 240/22 16° | 240/24 10° | 260/18 5° | 270/16 -8° | 290/27 -19° | 310/42 -35° | 320/55 -44° | 300/71 -52° |
| MKG | used from 846 nm out; 80 nm from the line | 250/5 | 320/10 15° | 310/19 9° | 320/21 3° | 310/23 -10° | 330/37 -22° | 330/51 -38° | 320/44 -47° | 300/60 -49° |
| CLE | used from 1095 nm out; 100 nm from the line | 340/5 | 320/13 14° | 300/12 8° | 310/10 2° | 310/14 -10° | 340/14 -23° | 320/27 -35° | 260/28 -40° | 250/36 -48° |
| BUF | used from 1194 nm out; 60 nm from the line | 170/19 | L/V 10° | 040/9 6° | 220/8 2° | 230/15 -11° | 220/33 -22° | 220/47 -35° | 230/55 -41° | 230/56 -50° |
| SYR | used from 1343 nm out; 31 nm from the line | 160/17 | 200/22 10° | 250/10 6° | L/V 1° | 270/11 -11° | 220/25 -20° | 220/66 -36° | 230/89 -42° | 240/74 -51° |
| ALB | used from 1443 nm out; 30 nm from the line | 160/27 | 190/16 9° | 200/29 7° | 230/21 3° | 240/24 -9° | 240/43 -19° | 230/65 -33° | 240/91 -42° | 230/99 -53° |
| BDL | used from 1542 nm out; 39 nm from the line | 140/28 | 180/29 10° | 220/38 8° | 250/30 3° | 250/40 -8° | 240/46 -18° | 240/58 -32° | 240/80 -41° | 240/89 -55° |
| BOS | used from 1592 nm out; 15 nm from the line | 160/27 | 190/23 9° | 260/20 7° | 260/32 1° | 250/48 -7° | 240/56 -17° | 240/59 -33° | 250/75 -43° | 250/94 -55° |
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 |
|---|---|---|---|---|---|---|---|
| HDN Hayden, CO | departure | no report just now | 6,606 ft | ||||
| CYS Cheyenne, WY | 119 nm out, 11 nm northwest of the line, tower | no report just now | 6,159 ft | ||||
| OKS Oshkosh, NE | 229 nm out, 2 nm southwest of the line | no report just now | 3,394 ft | ||||
| LCG Wayne, NE | 478 nm out, 5 nm west of the line | no report just now | 1,431 ft | ||||
| SUX Sioux City, IA | 498 nm out, 8 nm north of the line, tower | no report just now | 1,098 ft | ||||
| ALO Waterloo, IA | 677 nm out, 7 nm south of the line, tower | no report just now | 873 ft | ||||
| MKE Milwaukee, WI | 876 nm out, 1 nm northeast of the line, tower | no report just now | 728 ft | ||||
| FNT Flint, MI | 1055 nm out, 6 nm southeast of the line, tower | no report just now | 782 ft | ||||
| BUF Buffalo, NY | 1284 nm out, 4 nm west of the line, tower | no report just now | 726 ft | ||||
| ROC Rochester, NY | 1323 nm out, 14 nm north of the line, tower | no report just now | 558 ft | ||||
| ALB Albany, NY | 1493 nm out, 8 nm northeast of the line, tower | no report just now | 284 ft | ||||
| BOS Boston, MA | destination | no report just now | 19 ft |
The highest airport on this list sits at 6,606 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BOS when you get there the forecast at the estimated arrival, 6:17 am EDT (10:17 UTC)
BOS has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8802 Foxborough, MA, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 17 nm from the route, at the destination end · drones kept away from a public gathering · starts Saturday 17 October · ZBW
Daylight
Sunset at HDN 6:33 pm MDT (00:33 UTC), at BOS 6:07 pm EDT (22:07 UTC) (civil twilight ends 6:35 pm EDT (22:35 UTC)). At 120 knots the arrival at BOS is before sunrise there (6:53 am EDT (10:53 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: Yampa Valley Airport, General Edward Lawrence Logan International.