Washington Dulles International to Harrisburg International IAD → MDT
81 nautical miles (94 statute miles) northeast on a straight line, true course 023°, about 033° magnetic at the departure end (variation 10W). At 120 knots that is 25 min at the quickest height in today's winds (34,000 ft, a 72-knot tailwind), arriving about 9:31 pm EDT (01:31 UTC), after sunset at the destination. Right now IAD is IFR, wind from the north (350°) at 6 knots; MDT is marginal VFR, wind from the north (010°) 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: 2,192 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 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 whole route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 36 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 last 18 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, 72 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 IAD.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- E145 at 12,000 ft, 22 nm east, 8:43 pm EDT (00:43 UTC): moderate turbulence. At the destination end, 22 nm east of the line.
as filed, and in English
LNS UA /OV LRP/TM 0043/FL120/TP E145/TB CONS MOD
- Report
- a routine report filed through LNS
- Where
- over LRP
- Time
- 00:43 UTC
- Height
- at 12,000 ft
- Aircraft
- E145
- Turbulence
- continuous moderate
- FA8X climbing, 5 nm west, 8:34 pm EDT (00:34 UTC): overcast above 1,000 ft. At the departure end, 5 nm west of the line.
as filed, and in English
IAD UA /OV AML300005/TM 0034/FLDURC/TP FA8X/SK OVC010
- Report
- a routine report filed through IAD
- Where
- 5 nm northwest (300°) of AML
- Time
- 00:34 UTC
- Height
- during the climb
- Aircraft
- FA8X
- Sky
- overcast from 1,000 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
- 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
- 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
- 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
- B39M at 2,000 ft, 5 nm northwest, 7:03 pm EDT (23:03 UTC): overcast above 700 ft. At the departure end, 5 nm northwest of the line.
as filed, and in English
IAD UA /OV AML320005/TM 2303/FL020/TP B39M/SK BASES OVC 007
- Report
- a routine report filed through IAD
- Where
- 5 nm northwest (320°) of AML
- Time
- 23:03 UTC
- Height
- at 2,000 ft
- Aircraft
- B39M
- Sky
- bases overcast at 700 ft
- B737 at 1,000 ft, 29 nm east, 6:47 pm EDT (22:47 UTC): overcast above 500 ft. At the departure end, 29 nm east of the line.
as filed, and in English
KADW UA /OV 1L DEP/TM 2247/FL010/TP B737/SK OVC005
- Report
- a routine report filed through KADW
- Where
- 1L departure
- Time
- 22:47 UTC
- Height
- at 1,000 ft
- Aircraft
- B737
- Sky
- overcast from 500 ft
- A319 descending, 0 nm northeast, 6:25 pm EDT (22:25 UTC): overcast above 700 ft, light rain. At the departure end, 0 nm northeast of the line.
as filed, and in English
IAD UA /OV RWY 1R/TM 2225/FLDURD/TP A319/SK OVC 007/WX 4SM W/ -RA
- Report
- a routine report filed through IAD
- Where
- runway 1R
- Time
- 22:25 UTC
- Height
- during the descent
- Aircraft
- A319
- Sky
- overcast from 700 ft
- Weather
- 4SM, west, light rain
- BE58 at 3,000 ft, 3 nm west, 6:22 pm EDT (22:22 UTC): a routine report with nothing remarked on. At the departure end, 3 nm west of the line.
as filed, and in English
IAD UA /OV AML300003/TM 2222/FL030/TP BE58/SK BASES009 OVC
- Report
- a routine report filed through IAD
- Where
- 3 nm northwest (300°) of AML
- Time
- 22:22 UTC
- Height
- at 3,000 ft
- Aircraft
- BE58
- Sky
- BASES009 overcast
- CRJ9 at 7,000 ft, 9 nm southeast, 7:17 pm EDT (23:17 UTC): overcast from 500 ft to 7,200 ft. 9 nm along the route, 9 nm southeast 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
- A21N at 600 ft, 28 nm southeast, 8:23 pm EDT (00:23 UTC): a broken layer above 600 ft. 27 nm along the route, 28 nm southeast 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
- B763 at 500 ft, 28 nm southeast, 7:50 pm EDT (23:50 UTC): a broken layer above 500 ft. 27 nm along the route, 28 nm southeast 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
8 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 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 1 forecast point nearest it (PSB). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 5,500 ft | 260° at 13 kt | −7 kt | 13 °C | 127 kt | 38 min | 9:44 pm EDT (01:44 UTC) |
| 7,500 ft | 240° at 12 kt | −9 kt | 10 °C | 129 kt | 38 min | 9:44 pm EDT (01:44 UTC) |
| 9,500 ft | 220° at 12 kt | −11 kt | 7 °C | 131 kt | 37 min | 9:43 pm EDT (01:43 UTC) |
| 11,500 ft | 220° at 11 kt | −11 kt | 5 °C | 131 kt | 37 min | 9:43 pm EDT (01:43 UTC) |
| 13,500 ft | 220° at 15 kt | −14 kt | 0 °C | 134 kt | 36 min | 9:42 pm EDT (01:42 UTC) |
| 15,500 ft | 230° at 20 kt | −18 kt | -5 °C | 138 kt | 35 min | 9:41 pm EDT (01:41 UTC) |
| 17,500 ft | 230° at 26 kt | −23 kt | -10 °C | 143 kt | 34 min | 9:40 pm EDT (01:40 UTC) |
| 18,000 ft FL180 | 230° at 27 kt | −24 kt | -11 °C | 144 kt | 34 min | 9:40 pm EDT (01:40 UTC) |
| 24,000 ft FL240 | 210° at 31 kt | −31 kt | -21 °C | 151 kt | 32 min | 9:38 pm EDT (01:38 UTC) |
| 30,000 ft FL300 | 220° at 73 kt | −70 kt | -32 °C | 190 kt | 26 min | 9:32 pm EDT (01:32 UTC) |
| 34,000 ft FL340 | 220° at 75 kt | −72 kt | -40 °C | 192 kt | 25 min | 9:31 pm EDT (01:31 UTC) |
| 39,000 ft FL390 | 230° at 66 kt | −59 kt | -50 °C | 179 kt | 27 min | 9:33 pm EDT (01:33 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| PSB | used from 0 nm out; 103 nm from the line | 260/13 13° | 220/12 8° | 220/11 4° | 230/27 -11° | 210/31 -21° | 220/73 -32° | 220/75 -40° | 230/66 -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 |
|---|---|---|---|---|---|---|---|
| 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) |
| FDK Frederick, MD | 27 nm out, 7 nm northwest of the line, tower | IFR Sky: a broken layer at 500 feet, overcast at 900 feet | from the north-northeast (020°) at 7 knots | 10+ mi | 500 ft | 308 ft | 00:47 UTC |
| THV York, PA | 63 nm out, 2 nm east of the line | marginal VFR Sky: overcast at 1,000 feet Weather: heavy rain, mist | from the north (360°) at 4 knots | 3 mi | 1,000 ft | 494 ft | 00:53 UTC |
| MDT Harrisburg, PA | destination | marginal VFR Sky: overcast at 1,000 feet | from the north (010°) at 3 knots | 10+ mi | 1,000 ft | 310 ft | 7:56 pm EDT (23:56 UTC) |
The highest airport on this list sits at 494 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At MDT when you get there the forecast at the estimated arrival, 9:31 pm EDT (01:31 UTC)
Wind from the northeast at 3 knots, visibility more than 6 miles, light rain showers, thunderstorms nearby, scattered clouds at 800 feet (thunderheads), overcast at 1,000 feet marginal VFR
The whole forecast for MDT
- From Sun 8:00 pm EDT (00:00 UTC): wind from the northeast at 3 knots, visibility more than 6 miles, light rain showers, thunderstorms nearby, scattered clouds at 800 feet (thunderheads), overcast at 1,000 feet
- From Mon 2:00 am EDT (06:00 UTC): wind from the north at 7 knots, visibility 4 miles, mist, scattered clouds at 700 feet, overcast at 1,200 feet
- From Mon 8:00 am EDT (12:00 UTC): wind from the north-northwest at 10 knots, visibility 6 miles, mist, scattered clouds at 1,500 feet, overcast at 4,000 feet
- From Mon 10:00 am EDT (14:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 2,500 feet, overcast at 4,000 feet
- From Mon 2:00 pm EDT (18:00 UTC): wind from the northwest at 8 knots, visibility more than 6 miles, a broken layer at 4,000 feet
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 6 nm from the route, 9 nm along the route · security · ZDC
- 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, 9 nm along the route · a VIP movement · today · ZDC
Daylight
Sunset at IAD 6:36 pm EDT (22:36 UTC), at MDT 6:32 pm EDT (22:32 UTC) (civil twilight ends 6:59 pm EDT (22:59 UTC)). At 120 knots the arrival at MDT is after sunset there (6:33 pm EDT (22:33 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, Harrisburg International.