Vance Brand Airport to Washington Dulles International LMO → IAD
1,279 nautical miles (1,472 statute miles) east on a straight line, true course 084°, about 074° magnetic at the departure end (variation 10E). At 120 knots that is 7 h 37 min at the quickest height in today's winds (34,000 ft, a 48-knot tailwind), arriving about 10:21 am EDT (14:21 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
- SIGMET E22E: thunderstorms (a convective SIGMET) up to 40,000 ft, moving from the southwest at 20 knots, until 1:55 am MDT (07:55 UTC). Over the last 40 nm of the route.
as issued
WSUS31 KKCI 120555 MKCE WST 120555 CONVECTIVE SIGMET 22E VALID UNTIL 0755Z NY NJ PA DE MD VA DC WV AND MA RI DE NJ NY CSTL WTRS FROM 40E HTO-80SSW ACK-100ESE SIE-30SW CSN-40SSE JST-40E HTO AREA EMBD TS MOV FROM 24020KT. TOPS TO FL400.
- 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). Near the route, at the departure end.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the first 120 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 90 nm of the route.
- AIRMET TANGO 3W: 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 100 to 630 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). Over the last 450 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1099 to 1249 nm out.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 70 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 LMO.
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 02:00–09:00 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 12 forecast points nearest it (DEN, GLD, GRI, OMA, DSM, BRL, SPI, IND, CVG, CMH, EKN, RIC). 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 | 250° at 19 kt | −18 kt | 138 kt | 9 h 16 min | 12:00 pm EDT (16:00 UTC) | |
| 5,500 ft | 260° at 22 kt | −22 kt | 16 °C | 142 kt | 9 h | 11:44 am EDT (15:44 UTC) |
| 7,500 ft | 270° at 19 kt | −20 kt | 13 °C | 140 kt | 9 h 08 min | 11:52 am EDT (15:52 UTC) |
| 9,500 ft | 280° at 17 kt | −18 kt | 10 °C | 138 kt | 9 h 16 min | 12:00 pm EDT (16:00 UTC) |
| 11,500 ft | 270° at 14 kt | −16 kt | 6 °C | 136 kt | 9 h 24 min | 12:08 pm EDT (16:08 UTC) |
| 13,500 ft | 270° at 15 kt | −17 kt | 2 °C | 137 kt | 9 h 20 min | 12:04 pm EDT (16:04 UTC) |
| 15,500 ft | 270° at 18 kt | −19 kt | -3 °C | 139 kt | 9 h 12 min | 11:56 am EDT (15:56 UTC) |
| 17,500 ft | 270° at 20 kt | −21 kt | -7 °C | 141 kt | 9 h 04 min | 11:48 am EDT (15:48 UTC) |
| 18,000 ft FL180 | 270° at 20 kt | −22 kt | -8 °C | 142 kt | 9 h | 11:44 am EDT (15:44 UTC) |
| 24,000 ft FL240 | 270° at 26 kt | −28 kt | -20 °C | 148 kt | 8 h 39 min | 11:23 am EDT (15:23 UTC) |
| 30,000 ft FL300 | 270° at 35 kt | −37 kt | -33 °C | 157 kt | 8 h 09 min | 10:53 am EDT (14:53 UTC) |
| 34,000 ft FL340 | 280° at 47 kt | −48 kt | -39 °C | 168 kt | 7 h 37 min | 10:21 am EDT (14:21 UTC) |
| 39,000 ft FL390 | 280° at 46 kt | −47 kt | -49 °C | 167 kt | 7 h 40 min | 10:24 am EDT (14:24 UTC) |
Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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; 21 nm from the line | 240/21 14° | 250/44 6° | 220/49 -8° | 220/49 -21° | 230/54 -30° | 240/57 -35° | 240/49 -45° | ||
| GLD | used from 100 nm out; 68 nm from the line | 230/49 | 230/42 15° | 220/26 8° | 240/18 -7° | 230/27 -21° | 240/62 -30° | 240/61 -35° | 250/57 -47° | |
| GRI | used from 250 nm out; 49 nm from the line | 230/35 21° | 230/23 13° | 220/20 7° | 240/25 -8° | 240/37 -20° | 250/49 -33° | 260/57 -38° | 260/58 -47° | |
| OMA | used from 400 nm out; 48 nm from the line | 220/47 | 240/33 19° | 250/18 11° | 230/17 6° | 260/29 -8° | 250/33 -19° | 250/51 -33° | 260/61 -40° | 270/62 -49° |
| DSM | used from 500 nm out; 64 nm from the line | 230/40 | 250/33 17° | 250/18 12° | 240/17 5° | 260/28 -8° | 270/34 -19° | 260/41 -33° | 260/55 -41° | 270/62 -51° |
| BRL | used from 550 nm out; 71 nm from the line | 230/24 | 240/29 15° | 290/16 10° | 280/15 4° | 260/23 -7° | 260/32 -19° | 260/36 -33° | 280/48 -41° | 280/59 -52° |
| SPI | used from 700 nm out; 31 nm from the line | 220/21 | 250/23 16° | 260/27 9° | 270/14 6° | 270/23 -7° | 270/31 -19° | 270/28 -33° | 290/48 -42° | 300/55 -52° |
| IND | used from 800 nm out; 47 nm from the line | 290/16 | 310/20 16° | 320/21 10° | 330/13 3° | 300/25 -7° | 320/32 -19° | 330/46 -34° | 320/61 -43° | 320/63 -50° |
| CVG | used from 900 nm out; 56 nm from the line | 320/18 | 350/32 16° | 350/35 10° | 350/30 3° | 330/30 -7° | 340/44 -20° | 340/58 -35° | 330/72 -41° | 320/36 -49° |
| CMH | used from 950 nm out; 49 nm from the line | 330/15 | 340/22 14° | 340/24 9° | 340/23 4° | 340/35 -9° | 340/49 -20° | 340/58 -37° | 330/70 -42° | 340/55 -47° |
| EKN | used from 1099 nm out; 52 nm from the line | 330/21 12° | 330/25 7° | 350/22 2° | 330/24 -10° | 310/27 -21° | 320/33 -35° | 290/31 -39° | 290/34 -47° | |
| RIC | used from 1249 nm out; 92 nm from the line | 270/23 | 280/19 11° | 270/18 8° | 240/22 4° | 230/39 -7° | 220/55 -18° | 220/75 -30° | 230/83 -39° | 230/64 -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 |
|---|---|---|---|---|---|---|---|
| LMO Longmont, CO | departure | no report just now | 5,055 ft | ||||
| DEN Denver, CO | 20 nm out, 20 nm south of the line, tower | no report just now | 5,433 ft | ||||
| CSB Cambridge, NE | 230 nm out, 8 nm south of the line | no report just now | 2,414 ft | ||||
| HDE Holdrege, NE | 270 nm out, 3 nm west of the line | no report just now | 2,313 ft | ||||
| LNK Lincoln, NE | 390 nm out, 21 nm north of the line, tower | no report just now | 1,218 ft | ||||
| EOK Keokuk, IA | 630 nm out, 4 nm north of the line | no report just now | 671 ft | ||||
| BMI Bloomington/Normal, IL | 740 nm out, 13 nm north of the line, tower | no report just now | 871 ft | ||||
| CMI Champaign/Urbana, IL | 770 nm out, 12 nm south of the line, tower | no report just now | 754 ft | ||||
| DAY Dayton, OH | 959 nm out, 2 nm northeast of the line, tower | no report just now | 1,009 ft | ||||
| CKB Clarksburg, WV | 1149 nm out, 5 nm south of the line, tower | no report just now | 1,223 ft | ||||
| MGW Morgantown, WV | 1159 nm out, 19 nm north of the line, tower | no report just now | 1,243 ft | ||||
| IAD Washington, DC | destination | no report just now | 312 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 IAD when you get there the forecast at the estimated arrival, 10:21 am EDT (14:21 UTC)
IAD has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 4/9383 WASHINGTON, DC., USA 8 nm from the route, at the destination end · security · ZDC
- 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 4 nm from the route, at the destination end · a VIP movement · today · ZDC
Daylight
Sunset at LMO 6:24 pm MDT (00:24 UTC), at IAD 6:36 pm EDT (22:36 UTC) (civil twilight ends 7:02 pm EDT (23:02 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: Vance Brand Airport, Washington Dulles International.