Washington Dulles International to Louisville Muhammad Ali International IAD → SDF
391 nautical miles (450 statute miles) west on a straight line, true course 266°, about 276° magnetic at the departure end (variation 10W). At 120 knots that is 3 h 21 min at the quickest height in today's winds (12,500 ft, a 3-knot headwind), arriving about 2:59 am EDT (06:59 UTC), after sunset at the destination. Right now IAD is IFR, wind from the north (350°) at 12 knots; SDF is VFR, wind from the south-southeast (160°) at 3 knots. 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: 2,339 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 E11E: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 20 knots, until 12:55 am EDT (04:55 UTC). Over the first 68 nm of the route.
as issued
WSUS31 KKCI 120255 MKCE WST 120255 CONVECTIVE SIGMET 11E VALID UNTIL 0455Z NY NJ PA DE MD VA DC WV AND DE NJ NY MD CT VA CSTL WTRS FROM 20NE JFK-90SE SIE-20NNW ORF-30ENE EKN-10S JST-20NE JFK AREA EMBD TS MOV FROM 24020KT. TOPS TO FL340.
- 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 whole route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 137 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 29 to 225 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 IAD.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B38M at 20,000 ft, 8 nm north, 11:11 pm EDT (03:11 UTC): moderate clear-air turbulence from 20,000 ft to 25,000 ft. 20 nm along the route, 8 nm north of the line.
as filed, and in English
IAD UA /OV AML300020/TM 0311/FL200/TP B38M/TB MOD CAT 200-250
- Report
- a routine report filed through IAD
- Where
- 20 nm northwest (300°) of AML
- Time
- 03:11 UTC
- Height
- at 20,000 ft
- Aircraft
- B38M
- Turbulence
- moderate clear-air turbulence from 20,000 ft to 25,000 ft
- B712 descending, 39 nm east, 11:10 pm EDT (03:10 UTC): remarks: light rain light chop bases 50,000 ft ft. At the departure end, 39 nm east of the line.
as filed, and in English
BWI UA /OV RWY 15R/TM 0310/FLDURD/TP B712/RM LIGHT RAIN. LIGHT CHOP. BASES 500 FT
- Report
- a routine report filed through BWI
- Where
- runway 15R
- Time
- 03:10 UTC
- Height
- during the descent
- Aircraft
- B712
- Remarks
- light rain light chop bases 50,000 ft ft
- A320 at 2,000 ft, 39 nm east, 9:46 pm EDT (01:46 UTC): a broken layer from 30,000 ft to 4,500 ft, remarks: CONLE5 sid. At the departure end, 39 nm east of the line.
as filed, and in English
BWI UA /OV BAL180005/TM 0146/FL020/TP A320/SK BKN003-TOP045/RM CONLE5 SID
- Report
- a routine report filed through BWI
- Where
- 5 nm south (180°) of BAL
- Time
- 01:46 UTC
- Height
- at 2,000 ft
- Aircraft
- A320
- Sky
- a broken layer from 300 ft, tops 4,500 ft
- Remarks
- CONLE5 sid
- B738 at 2,000 ft, 37 nm east, 9:43 pm EDT (01:43 UTC): a broken layer from 40,000 ft to 7,200 ft, remarks: TERPZ8 sid. At the departure end, 37 nm east of the line.
as filed, and in English
BWI UA /OV BAL260003/TM 0143/FL20/TP B738/SK BKN004-TOP072/RM TERPZ8 SID
- Report
- a routine report filed through BWI
- Where
- 3 nm west (260°) of BAL
- Time
- 01:43 UTC
- Height
- at 2,000 ft
- Aircraft
- B738
- Sky
- a broken layer from 400 ft, tops 7,200 ft
- Remarks
- TERPZ8 sid
- B38M at 400 ft, 20 nm east, 9:15 pm EDT (01:15 UTC): overcast above 40,000 ft. At the departure end, 20 nm east of the line.
as filed, and in English
DCA UA /OV DCA/TM 0115/FL004/TP B38M/SK OVC004
- Report
- a routine report filed through DCA
- Where
- over DCA
- Time
- 01:15 UTC
- Height
- at 400 ft
- Aircraft
- B38M
- Sky
- overcast from 400 ft
- BCS3 at 25,000 ft, 47 nm north, 8:58 pm EDT (00:58 UTC): light turbulence, no icing, remarks: during the climb. 176 nm along the route, 47 nm north of the line.
as filed, and in English
PKB UA /OV JPU/TM 0058/FL250/TP BCS3/TB LGT/IC NEG/RM DURC
- Report
- a routine report filed through PKB
- Where
- over JPU
- Time
- 00:58 UTC
- Height
- at 25,000 ft
- Aircraft
- BCS3
- Turbulence
- light
- Icing
- none
- Remarks
- during the climb
- B712 at 600 ft, 17 nm south, 9:06 pm EDT (01:06 UTC): overcast. 342 nm along the route, 17 nm south of the line.
as filed, and in English
LEX UA /OV KLEX/TM 0106/FL006/TP B712/SK OVC B006
- Report
- a routine report filed through LEX
- Where
- over KLEX
- Time
- 01:06 UTC
- Height
- at 600 ft
- Aircraft
- B712
- Sky
- overcast B006
- B38M at 21,000 ft, 6 nm south, 9:09 pm EDT (01:09 UTC): no turbulence, no icing. At the destination end, 6 nm south of the line.
as filed, and in English
SDF UA /OV IIU/TM 0109/FL210/TP B38M/TB NEG/IC NEG
- Report
- a routine report filed through SDF
- Where
- over IIU
- Time
- 01:09 UTC
- Height
- at 21,000 ft
- Aircraft
- B38M
- Turbulence
- none
- Icing
- none
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 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 4 forecast points nearest it (EKN, CRW, CVG, LOU). 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 22 kt | +8 kt | 12 °C | 112 kt | 3 h 29 min | 3:07 am EDT (07:07 UTC) |
| 6,500 ft | 340° at 24 kt | +7 kt | 12 °C | 113 kt | 3 h 28 min | 3:06 am EDT (07:06 UTC) |
| 8,500 ft | 340° at 26 kt | +7 kt | 9 °C | 113 kt | 3 h 28 min | 3:06 am EDT (07:06 UTC) |
| 10,500 ft | 340° at 25 kt | +5 kt | 5 °C | 115 kt | 3 h 24 min | 3:02 am EDT (07:02 UTC) |
| 12,500 ft | 350° at 24 kt | +3 kt | 1 °C | 117 kt | 3 h 21 min | 2:59 am EDT (06:59 UTC) |
| 14,500 ft | 340° at 25 kt | +5 kt | -2 °C | 115 kt | 3 h 24 min | 3:02 am EDT (07:02 UTC) |
| 16,500 ft | 340° at 27 kt | +8 kt | -6 °C | 112 kt | 3 h 29 min | 3:07 am EDT (07:07 UTC) |
| 18,000 ft FL180 | 330° at 28 kt | +9 kt | -9 °C | 111 kt | 3 h 31 min | 3:09 am EDT (07:09 UTC) |
| 24,000 ft FL240 | 330° at 35 kt | +13 kt | -20 °C | 107 kt | 3 h 39 min | 3:17 am EDT (07:17 UTC) |
| 30,000 ft FL300 | 330° at 42 kt | +17 kt | -35 °C | 103 kt | 3 h 48 min | 3:26 am EDT (07:26 UTC) |
| 34,000 ft FL340 | 320° at 44 kt | +26 kt | -39 °C | 94 kt | 4 h 10 min | 3:48 am EDT (07:48 UTC) |
| 39,000 ft FL390 | 310° at 37 kt | +25 kt | -48 °C | 95 kt | 4 h 07 min | 3:45 am EDT (07:45 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| EKN | used from 0 nm out; 88 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° | |
| CRW | used from 147 nm out; 29 nm from the line | 330/20 | 330/23 11° | 340/25 8° | 340/21 2° | 340/33 -9° | 340/41 -20° | 330/42 -35° | 320/44 -39° | 320/43 -47° |
| CVG | used from 293 nm out; 47 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° |
| LOU | used from 342 nm out; 21 nm from the line | 310/18 | 340/28 16° | 340/29 10° | 350/27 3° | 330/27 -7° | 340/39 -19° | 330/58 -33° | 330/67 -41° | 330/40 -49° |
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 |
|---|---|---|---|---|---|---|---|
| IAD Washington, DC | departure | IFR Sky: overcast at 800 feet | from the north (350°) at 12 knots | 9 mi | 800 ft | 312 ft | 11:30 pm EDT (03:30 UTC) |
| FRR Front Royal, VA | 39 nm out, 2 nm northeast of the line | low IFR Sky: a broken layer at 300 feet, overcast at 1,200 feet Weather: rain | calm | 5 mi | 300 ft | 703 ft | 03:35 UTC |
| LUA Luray, VA | 49 nm out, 13 nm south of the line | marginal VFR Sky: scattered clouds at 800 feet, a broken layer at 1,300 feet, overcast at 3,100 feet Weather: heavy rain | calm | 7 mi | 1,300 ft | 902 ft | 03:35 UTC |
| EKN Elkins, WV | 108 nm out, 8 nm northwest of the line | marginal VFR Sky: overcast at 1,200 feet Weather: light rain | from the west-northwest (300°) at 6 knots | 7 mi | 1,200 ft | 1,987 ft | 03:09 UTC |
| CRW Charleston, WV | 196 nm out, 16 nm south of the line, tower | IFR Sky: a broken layer at 700 feet, overcast at 1,500 feet Weather: mist | variable at 4 knots | 1 mi | 700 ft | 947 ft | 02:54 UTC |
| HTS Huntington, WV | 244 nm out, 11 nm southeast of the line, tower | IFR Sky: a broken layer at 700 feet, overcast at 1,400 feet Weather: mist | from the west (280°) at 5 knots | 2.5 mi | 700 ft | 828 ft | 02:51 UTC |
| FGX Flemingsburg, KY | 293 nm out, 8 nm north of the line | marginal VFR Sky: overcast at 1,100 feet | from the northwest (320°) at 6 knots | 7 mi | 1,100 ft | 913 ft | 03:35 UTC |
| LEX Lexington, KY | 342 nm out, 17 nm south of the line, tower | marginal VFR Sky: overcast at 1,800 feet | from the west-southwest (250°) at 3 knots | 9 mi | 1,800 ft | 979 ft | 02:54 UTC |
| FFT Frankfort, KY | 352 nm out, 6 nm south of the line | reported, no category | calm | none | 812 ft | 02:53 UTC | |
| SDF Louisville, KY | destination | VFR | from the south-southeast (160°) at 3 knots | 10+ mi | none | 500 ft | 10:56 pm EDT (02:56 UTC) |
The highest airport on this list sits at 1,987 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SDF when you get there the forecast at the estimated arrival, 2:59 am EDT (06:59 UTC)
Wind from the southwest at 3 knots, visibility more than 6 miles, clear skies VFR
The whole forecast for SDF
- From Sun 8:00 pm EDT (00:00 UTC): wind from the west-northwest at 5 knots, visibility more than 6 miles, a broken layer at 2,500 feet
- From Sun 8:30 pm EDT (00:30 UTC): wind from the southwest at 3 knots, visibility more than 6 miles, clear skies
- From Mon 6:00 am EDT (10:00 UTC): wind from the south-southeast at 3 knots, visibility 4 miles, mist, clear skies
- From Mon 9:00 am EDT (13:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, clear skies
The forecast for IAD, the departure
- From Sun 11:00 pm EDT (03:00 UTC): wind from the north-northwest at 10 knots, visibility 3 miles, light rain showers, mist, overcast at 600 feet
- From Mon 6:00 am EDT (10:00 UTC): wind from the north-northwest at 11 knots, gusting to 19, visibility more than 6 miles, overcast at 1,400 feet
- From Mon 12:00 pm EDT (16:00 UTC): wind from the north-northwest at 13 knots, gusting to 21, visibility more than 6 miles, overcast at 2,100 feet
- From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 10 knots, gusting to 17, visibility more than 6 miles, a broken layer at 4,000 feet
- From Mon 7:00 pm EDT (23:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 4/9383 WASHINGTON, DC., USA 8 nm from the route, at the departure end · security · ZDC
- 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 4 nm from the route, at the departure end · a VIP movement · today · ZDC
Daylight
Sunset at IAD 6:36 pm EDT (22:36 UTC), at SDF 7:09 pm EDT (23:09 UTC) (civil twilight ends 7:36 pm EDT (23:36 UTC)). At 120 knots the arrival at SDF is before sunrise there (7:48 am EDT (11:48 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: Washington Dulles International, Louisville Muhammad Ali International.