Denver International to General Edward Lawrence Logan International DEN → BOS
1,520 nautical miles (1,750 statute miles) east on a straight line, true course 073°, about 065° magnetic at the departure end (variation 8E). At 120 knots that is 8 h 50 min at the quickest height in today's winds (39,000 ft, a 52-knot tailwind), arriving about 2:34 pm EDT (18:34 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: 7,628 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 0 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the first 40 nm of the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the first 10 nm of the route.
- 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). Over the route from 149 to 676 nm out.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist, fog). Over the last 646 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 1232 to 1431 nm out.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the last 238 nm of 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 DEN.
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 14 forecast points nearest it (DEN, GLD, GRI, OMA, DSM, DBQ, JOT, 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 | 270° at 18 kt | −19 kt | 139 kt | 10 h 56 min | 4:40 pm EDT (20:40 UTC) | |
| 5,500 ft | 270° at 18 kt | −19 kt | 23 °C | 139 kt | 10 h 56 min | 4:40 pm EDT (20:40 UTC) |
| 7,500 ft | 270° at 16 kt | −17 kt | 13 °C | 137 kt | 11 h 06 min | 4:50 pm EDT (20:50 UTC) |
| 9,500 ft | 270° at 15 kt | −16 kt | 9 °C | 136 kt | 11 h 11 min | 4:55 pm EDT (20:55 UTC) |
| 11,500 ft | 270° at 17 kt | −18 kt | 5 °C | 138 kt | 11 h 01 min | 4:45 pm EDT (20:45 UTC) |
| 13,500 ft | 270° at 19 kt | −20 kt | 1 °C | 140 kt | 10 h 51 min | 4:35 pm EDT (20:35 UTC) |
| 15,500 ft | 270° at 21 kt | −22 kt | -4 °C | 142 kt | 10 h 42 min | 4:26 pm EDT (20:26 UTC) |
| 17,500 ft | 270° at 23 kt | −24 kt | -8 °C | 144 kt | 10 h 33 min | 4:17 pm EDT (20:17 UTC) |
| 18,000 ft FL180 | 270° at 23 kt | −24 kt | -9 °C | 144 kt | 10 h 33 min | 4:17 pm EDT (20:17 UTC) |
| 24,000 ft FL240 | 270° at 28 kt | −29 kt | -21 °C | 149 kt | 10 h 12 min | 3:56 pm EDT (19:56 UTC) |
| 30,000 ft FL300 | 280° at 38 kt | −39 kt | -35 °C | 159 kt | 9 h 34 min | 3:18 pm EDT (19:18 UTC) |
| 34,000 ft FL340 | 280° at 49 kt | −49 kt | -41 °C | 169 kt | 9 h | 2:44 pm EDT (18:44 UTC) |
| 39,000 ft FL390 | 280° at 53 kt | −52 kt | -50 °C | 172 kt | 8 h 50 min | 2:34 pm EDT (18:34 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DEN | used from 0 nm out; 25 nm from the line | 270/24 11° | 230/13 5° | 230/48 -8° | 230/46 -20° | 230/63 -30° | 240/78 -36° | 240/78 -48° | ||
| GLD | used from 99 nm out; 66 nm from the line | 260/37 | 260/25 14° | 250/27 8° | 230/36 -8° | 230/49 -21° | 250/71 -30° | 260/82 -36° | 250/73 -48° | |
| GRI | used from 199 nm out; 75 nm from the line | 230/39 23° | 230/32 15° | 210/29 7° | 230/31 -8° | 230/43 -21° | 250/52 -31° | 260/59 -35° | 260/59 -46° | |
| OMA | used from 348 nm out; 38 nm from the line | 230/47 | 240/33 21° | 230/22 13° | 220/27 5° | 240/35 -8° | 250/43 -21° | 260/47 -33° | 260/59 -36° | 270/58 -46° |
| DSM | used from 447 nm out; 42 nm from the line | 250/47 | 260/25 20° | 240/19 11° | 240/31 5° | 250/26 -9° | 260/38 -20° | 260/47 -34° | 270/58 -37° | 270/61 -47° |
| DBQ | used from 596 nm out; 32 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 696 nm out; 61 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° |
| MKG | used from 795 nm out; 50 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° |
| CLE | used from 944 nm out; 102 nm from the line | 310/7 | 350/20 14° | 340/16 9° | 320/21 2° | 320/32 -8° | 330/34 -20° | 330/45 -36° | 320/60 -45° | 320/64 -51° |
| BUF | used from 1093 nm out; 62 nm from the line | 300/11 | 330/15 11° | 340/26 8° | 330/28 2° | 340/31 -10° | 340/32 -21° | 340/52 -37° | 340/59 -46° | 330/66 -53° |
| SYR | used from 1242 nm out; 39 nm from the line | 330/17 | 320/14 9° | 350/18 8° | 350/26 2° | 340/25 -11° | 360/34 -22° | 350/43 -39° | 330/50 -46° | 350/50 -54° |
| ALB | used from 1341 nm out; 32 nm from the line | 340/22 | 340/19 9° | 320/16 7° | 330/16 2° | 330/19 -11° | 320/21 -23° | 320/25 -39° | 280/30 -44° | 270/41 -51° |
| BDL | used from 1441 nm out; 36 nm from the line | 020/15 | 010/19 10° | 340/10 7° | 300/17 3° | 280/23 -10° | 250/35 -22° | 250/44 -38° | 250/55 -42° | 250/57 -51° |
| BOS | used from 1491 nm out; 15 nm from the line | 020/10 | 360/20 10° | 340/19 7° | 290/21 2° | 270/35 -9° | 260/42 -22° | 250/55 -38° | 240/75 -43° | 250/72 -51° |
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 |
|---|---|---|---|---|---|---|---|
| DEN Denver, CO | departure | no report just now | 5,433 ft | ||||
| AKO Akron, CO | 70 nm out, 1 nm south of the line | no report just now | 4,716 ft | ||||
| GRI Grand Island, NE | 298 nm out, 9 nm south of the line, tower | no report just now | 1,847 ft | ||||
| OMA Omaha, NE | 407 nm out, 12 nm south of the line, tower | no report just now | 984 ft | ||||
| CID Cedar Rapids, IA | 596 nm out, 10 nm southeast of the line, tower | no report just now | 869 ft | ||||
| RFD Chicago/Rockford, IL | 715 nm out, 6 nm southeast of the line, tower | no report just now | 742 ft | ||||
| UGN Chicago/Waukegan, IL | 775 nm out, 3 nm northwest of the line, tower | no report just now | 728 ft | ||||
| PTK Pontiac, MI | 974 nm out, 4 nm northwest of the line, tower | no report just now | 980 ft | ||||
| BUF Buffalo, NY | 1182 nm out, 16 nm north of the line, tower | no report just now | 726 ft | ||||
| ITH Ithaca, NY | 1282 nm out, 9 nm south of the line, tower | no report just now | 1,099 ft | ||||
| ORH Worcester, MA | 1481 nm out, 10 nm south of the line, tower | no report just now | 1,009 ft | ||||
| BOS Boston, MA | destination | no report just now | 19 ft |
The highest airport on this list sits at 5,433 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, 2:34 pm EDT (18:34 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 16 nm from the route, at the destination end · drones kept away from a public gathering · starts Saturday 17 October · ZBW
Daylight
Sunset at DEN 6:22 pm MDT (00:22 UTC), at BOS 6:07 pm EDT (22:07 UTC) (civil twilight ends 6:35 pm EDT (22:35 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: Denver International, General Edward Lawrence Logan International.