Washington Dulles International to Edgar County IAD → PRG
476 nautical miles (548 statute miles) west on a straight line, true course 279°, about 289° magnetic at the departure end (variation 10W). At 120 knots that is 4 h 04 min at the quickest height in today's winds (12,500 ft, a 3-knot headwind), arriving about 12:47 am CDT (05:47 UTC), after sunset at the destination. Right now IAD is IFR, wind from the north (350°) at 6 knots; PRG is VFR, wind calm. 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: 4 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 3E: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the west at 15 knots, until 10:55 pm EDT (02:55 UTC). Over the first 228 nm of the route.
as issued
WSUS31 KKCI 120055 MKCE WST 120055 CONVECTIVE SIGMET 3E VALID UNTIL 0255Z PA MD VA NC WV OH KY FROM 20NE APE-30SE JST-30SSE DCA-40SW ECG-70NNW HMV-20NE APE AREA TS MOV FROM 28015KT. TOPS TO FL310.
- 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 first 308 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 109 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 30 to 179 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
- E170 at 22,500 ft, 8 nm north, 7:44 pm EDT (23:44 UTC): moderate clear-air turbulence from 18,000 ft to 22,500 ft, remarks: during the descent FRDMM7 star. 50 nm along the route, 8 nm north of the line.
as filed, and in English
OKV UA /OV ESL100020/TM 2344/FL225/TP E170/TB CONS MOD CAT 180-225/RM DURD FRDMM7 STAR
- Report
- a routine report filed through OKV
- Where
- 20 nm east (100°) of ESL
- Time
- 23:44 UTC
- Height
- at 22,500 ft
- Aircraft
- E170
- Turbulence
- continuous moderate clear-air turbulence from 18,000 ft to 22,500 ft
- Remarks
- during the descent FRDMM7 star
- A321 at 30,000 ft, 49 nm north, 7:49 pm EDT (23:49 UTC): moderate turbulence above 30,000 ft, remarks: zob. 99 nm along the route, 49 nm north of the line.
as filed, and in English
2G9 UA /OV IHD/TM 2349/FL300/TP A321/TB MOD 300/RM ZOB
- Report
- a routine report filed through 2G9
- Where
- over IHD
- Time
- 23:49 UTC
- Height
- at 30,000 ft
- Aircraft
- A321
- Turbulence
- moderate at 30,000 ft
- Remarks
- zob
- UAL2761 at 31,000 ft, 5 nm north, 7:57 pm EDT (23:57 UTC): moderate turbulence, wind 218° at 58 knots. 109 nm along the route, 5 nm north of the line.
as filed, and in English
ARP UAL2761 3917N 07949W 2357 F310 218/058KT TB CONT MOD TURB IC
- Report
- a routine report filed through ARP
- B38M at 29,000 ft, 35 nm north, 8:55 pm EDT (00:55 UTC): moderate turbulence above 29,000 ft, remarks: zob. 139 nm along the route, 35 nm north of the line.
as filed, and in English
MPG UA /OV AIR120030/TM 0055/FL290/TP B38M /TB OCNL MOD 290/RM ZOB
- Report
- a routine report filed through MPG
- Where
- 30 nm southeast (120°) of AIR
- Time
- 00:55 UTC
- Height
- at 29,000 ft
- Aircraft
- B38M
- Turbulence
- occasional moderate at 29,000 ft
- Remarks
- zob
- 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
- A320 descending, 20 nm east, 8:27 pm EDT (00:27 UTC): a routine report with nothing remarked on. At the departure end, 20 nm east of the line.
as filed, and in English
DCA UA /OV RWY 1 FINAL/TM 0027/FLDURD/TP A320/SK BASES 400 FT
- Report
- a routine report filed through DCA
- Where
- runway 1 final
- Time
- 00:27 UTC
- Height
- during the descent
- Aircraft
- A320
- Sky
- bases 40,000 ft ft
- A21N at 600 ft, 39 nm east, 8:23 pm EDT (00:23 UTC): a broken layer above 600 ft. At the departure end, 39 nm east of the line.
as filed, and in English
BWI UA /OV BWI/TM 0023/FL006/TP A21N/SK BKN006
- Report
- a routine report filed through BWI
- Where
- over BWI
- Time
- 00:23 UTC
- Height
- at 600 ft
- Aircraft
- A21N
- Sky
- a broken layer from 600 ft
- A319 descending, 20 nm east, 8:02 pm EDT (00:02 UTC): a routine report with nothing remarked on. At the departure end, 20 nm east of the line.
as filed, and in English
DCA UA /OV RWY 1 DEPARTURE/TM 0002/FLDURC/TP A319/SK BASES 500 FT
- Report
- a routine report filed through DCA
- Where
- runway 1 departure
- Time
- 00:02 UTC
- Height
- during the climb
- Aircraft
- A319
- Sky
- bases 50,000 ft ft
- B763 at 500 ft, 39 nm east, 7:50 pm EDT (23:50 UTC): a broken layer above 500 ft. At the departure end, 39 nm east of the line.
as filed, and in English
BWI UA /OV BWI/TM 2350/FL005/TP B763/SK BKN005
- Report
- a routine report filed through BWI
- Where
- over BWI
- Time
- 23:50 UTC
- Height
- at 500 ft
- Aircraft
- B763
- Sky
- a broken layer from 500 ft
- C17 at 500 ft, 29 nm east, 7:42 pm EDT (23:42 UTC): overcast above 500 ft. At the departure end, 29 nm east of the line.
as filed, and in English
KADW UA /OV RWY 1L ARR/TM 2342/FL005/TP C17/SK OVC005
- Report
- a routine report filed through KADW
- Where
- runway 1L arrival
- Time
- 23:42 UTC
- Height
- at 500 ft
- Aircraft
- C17
- Sky
- overcast from 500 ft
- B738 at 7,000 ft, 30 nm northeast, 7:40 pm EDT (23:40 UTC): overcast above 40,000 ft, remarks: top 6,500 ft. At the departure end, 30 nm northeast of the line.
as filed, and in English
BWI UA /OV BAL280010/TM 2340/FL070/TP B738/SK OVC004/RM TOP 065
- Report
- a routine report filed through BWI
- Where
- 10 nm west (280°) of BAL
- Time
- 23:40 UTC
- Height
- at 7,000 ft
- Aircraft
- B738
- Sky
- overcast from 400 ft
- Remarks
- top 6,500 ft
- CL60 at 500 ft, 14 nm south, 7:30 pm EDT (23:30 UTC): overcast above 500 ft, remarks: during the descent. At the departure end, 14 nm south of the line.
as filed, and in English
HEF UA /OV KHEF150001/TM 2330/FL005/TP CL60/SK OVC005/RM DURD
- Report
- a routine report filed through HEF
- Where
- 1 nm southeast (150°) of KHEF
- Time
- 23:30 UTC
- Height
- at 500 ft
- Aircraft
- CL60
- Sky
- overcast from 500 ft
- Remarks
- during the descent
- CL60 descending, 15 nm south, 7:30 pm EDT (23:30 UTC): overcast above 500 ft. At the departure end, 15 nm south of the line.
as filed, and in English
IAD UA /OV HEF160001/TM 2330/FLDURD/TP CL60/SK OVC 005
- Report
- a routine report filed through IAD
- Where
- 1 nm south (160°) of HEF
- Time
- 23:30 UTC
- Height
- during the descent
- Aircraft
- CL60
- Sky
- overcast from 500 ft
- CRJ9 at 7,000 ft, 11 nm east, 7:17 pm EDT (23:17 UTC): overcast from 500 ft to 7,200 ft. At the departure end, 11 nm east of the line.
as filed, and in English
DCA UA /OV DCA320012/TM 2317/FL070/TP CRJ9/SK BASES 005 OVC TOPS 072
- Report
- a routine report filed through DCA
- Where
- 12 nm northwest (320°) of DCA
- Time
- 23:17 UTC
- Height
- at 7,000 ft
- Aircraft
- CRJ9
- Sky
- bases 500 ft overcast tops 7,200 ft
16 more routine reports are on the map.
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 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 5 forecast points nearest it (EKN, CRW, CMH, CVG, IND). 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 | 320° at 14 kt | +11 kt | 13 °C | 109 kt | 4 h 22 min | 1:05 am CDT (06:05 UTC) |
| 6,500 ft | 320° at 17 kt | +11 kt | 12 °C | 109 kt | 4 h 22 min | 1:05 am CDT (06:05 UTC) |
| 8,500 ft | 340° at 16 kt | +7 kt | 9 °C | 113 kt | 4 h 13 min | 12:56 am CDT (05:56 UTC) |
| 10,500 ft | 350° at 14 kt | +4 kt | 6 °C | 116 kt | 4 h 06 min | 12:49 am CDT (05:49 UTC) |
| 12,500 ft | 350° at 13 kt | +3 kt | 2 °C | 117 kt | 4 h 04 min | 12:47 am CDT (05:47 UTC) |
| 14,500 ft | 340° at 14 kt | +5 kt | -2 °C | 115 kt | 4 h 08 min | 12:51 am CDT (05:51 UTC) |
| 16,500 ft | 330° at 15 kt | +7 kt | -6 °C | 113 kt | 4 h 13 min | 12:56 am CDT (05:56 UTC) |
| 18,000 ft FL180 | 330° at 16 kt | +9 kt | -10 °C | 111 kt | 4 h 17 min | 1:00 am CDT (06:00 UTC) |
| 24,000 ft FL240 | 300° at 18 kt | +16 kt | -21 °C | 104 kt | 4 h 35 min | 1:18 am CDT (06:18 UTC) |
| 30,000 ft FL300 | 280° at 22 kt | +21 kt | -34 °C | 99 kt | 4 h 48 min | 1:31 am CDT (06:31 UTC) |
| 34,000 ft FL340 | 260° at 30 kt | +29 kt | -39 °C | 91 kt | 5 h 14 min | 1:57 am CDT (06:57 UTC) |
| 39,000 ft FL390 | 270° at 33 kt | +31 kt | -47 °C | 89 kt | 5 h 21 min | 2:04 am CDT (07:04 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| EKN | used from 0 nm out; 88 nm from the line | 270/18 13° | 310/5 7° | 140/7 3° | 210/16 -9° | 220/41 -20° | 210/57 -32° | 220/57 -38° | 230/49 -47° | |
| CRW | used from 149 nm out; 60 nm from the line | 320/16 | 310/16 12° | 320/12 7° | 320/12 2° | 330/15 -11° | 280/11 -22° | 230/26 -30° | 240/33 -37° | 240/37 -47° |
| CMH | used from 198 nm out; 47 nm from the line | 340/14 | 320/13 12° | 350/12 8° | 360/10 2° | 350/27 -10° | 340/20 -22° | 320/31 -35° | 270/25 -39° | 260/32 -48° |
| CVG | used from 298 nm out; 34 nm from the line | 350/13 | 340/20 13° | 340/22 8° | 350/30 3° | 340/30 -9° | 340/38 -21° | 330/37 -35° | 320/38 -40° | 310/35 -47° |
| IND | used from 347 nm out; 41 nm from the line | 320/10 | 350/30 16° | 350/32 10° | 350/30 4° | 340/31 -10° | 340/42 -21° | 340/49 -37° | 320/46 -41° | 320/47 -47° |
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 600 feet Weather: light rain | from the north (350°) at 6 knots | 8 mi | 600 ft | 312 ft | 8:52 pm EDT (00:52 UTC) |
| MRB Martinsburg, WV | 30 nm out, 23 nm north of the line, tower | IFR Sky: overcast at 800 feet | from the north (360°) at 8 knots | 10+ mi | 800 ft | 564 ft | 00:53 UTC |
| LUA Luray, VA | 50 nm out, 24 nm south of the line | low IFR Sky: a broken layer at 400 feet, a broken layer at 1,100 feet, overcast at 1,900 feet | from the north-northeast (020°) at 4 knots | 10+ mi | 400 ft | 902 ft | 23:35 UTC |
| CKB Clarksburg, WV | 129 nm out, 4 nm north of the line, tower | marginal VFR Sky: scattered clouds at 600 feet, overcast at 2,000 feet | from the east-northeast (060°) at 3 knots | 10+ mi | 2,000 ft | 1,223 ft | 01:18 UTC |
| PKB Parkersburg, WV | 188 nm out, 2 nm east of the line, tower | IFR Sky: a broken layer at 600 feet, overcast at 2,500 feet Weather: light rain, mist | from the northwest (310°) at 4 knots | 3 mi | 600 ft | 858 ft | 01:33 UTC |
| UNI Athens/Albany, OH | 218 nm out, 13 nm southwest of the line | low IFR Sky: a broken layer at 100 feet, overcast at 900 feet Weather: mist | from the northwest (320°) at 4 knots | 2.5 mi | 100 ft | 765 ft | 22:15 UTC |
| LCK Columbus, OH | 258 nm out, 21 nm north of the line, tower | marginal VFR Sky: overcast at 1,400 feet | from the northwest (310°) at 6 knots | 10+ mi | 1,400 ft | 743 ft | 00:55 UTC |
| ILN Wilmington, OH | 298 nm out, 6 nm south of the line, tower | IFR Sky: overcast at 500 feet Weather: mist | from the northwest (320°) at 7 knots | 4 mi | 500 ft | 1,076 ft | 00:54 UTC |
| CEV Connersville, IN | 357 nm out, 6 nm north of the line | no report just now | 866 ft | ||||
| IND Indianapolis, IN | 417 nm out, 6 nm northeast of the line, tower | VFR | calm | 10+ mi | none | 796 ft | 00:54 UTC |
| HUF Terre Haute, IN | 456 nm out, 14 nm south of the line, tower | VFR | calm | 10+ mi | none | 589 ft | 00:53 UTC |
| PRG Paris, IL | destination | VFR | calm | 10+ mi | none | 654 ft | 8:35 pm CDT (01:35 UTC) |
The highest airport on this list sits at 1,223 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At PRG when you get there the forecast at the estimated arrival, 12:47 am CDT (05:47 UTC)
PRG has no terminal forecast; use the nearest airport that does.
The forecast for IAD, the departure
- From Sun 8:00 pm EDT (00:00 UTC): wind from the north at 7 knots, visibility 4 miles, light rain showers, mist, overcast at 700 feet
- From Sun 10:00 pm EDT (02:00 UTC): wind from the north-northwest at 6 knots, visibility 2 miles, rain showers, mist, overcast at 400 feet
- From Mon 4:00 am EDT (08:00 UTC): wind from the north-northwest at 10 knots, gusting to 18, visibility 4 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
- 6/8029 Cincinnati, OH, Friday, October 9, 2026 through Monday, October 12, 2026 Local 21 nm from the route, 327 nm along the route · a VIP movement · until 12 October · ZID
Daylight
Sunset at IAD 6:36 pm EDT (22:36 UTC), at PRG 6:16 pm CDT (23:16 UTC) (civil twilight ends 6:43 pm CDT (23:43 UTC)). At 120 knots the arrival at PRG is before sunrise there (6:57 am CDT (11:57 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, Edgar County.