Washington Dulles International to University Of Illinois/Willard Airport IAD → CMI
505 nautical miles (581 statute miles) west on a straight line, true course 281°, about 291° magnetic at the departure end (variation 10W). At 120 knots that is 4 h 54 min at the quickest height in today's winds (4,500 ft, a 17-knot headwind), arriving about 3:17 pm CDT (20:17 UTC). Right now IAD is marginal VFR, wind from the north-northwest (330°) at 14 knots, gusting to 24; CMI is VFR, wind from the southwest (220°) at 9 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: 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
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 40,000 ft. Over the first 10 nm of the route.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the route from 10 to 99 nm out.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 69 to 178 nm out.
- AIRMET SIERRA 1E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, mist). Over the route from 79 to 327 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
- B737 descending, 39 nm east, 11:00 am EDT (15:00 UTC): remarks: bases reported 2000 feet on final runway 33L. At the departure end, 39 nm east of the line.
as filed, and in English
BWI UA /OV FINAL/TM 1500/FLDURD/TP B737/RM BASES REPORTED 2000 FEET ON FINAL RWY 33L
- Report
- a routine report filed through BWI
- Where
- final
- Time
- 15:00 UTC
- Height
- during the descent
- Aircraft
- B737
- Remarks
- bases reported 2000 feet on final runway 33L
- B737 climbing, 11 nm northeast, 10:50 am EDT (14:50 UTC): a broken layer above 2,100 ft, remarks: base 2,100 ft tops 3,000 ft. At the departure end, 11 nm northeast of the line.
as filed, and in English
BWI UA /OV BAL270030/TM 1450/FLDURC/TP B737/SK BKN021/RM BASE 021 TOPS 030
- Report
- a routine report filed through BWI
- Where
- 30 nm west (270°) of BAL
- Time
- 14:50 UTC
- Height
- during the climb
- Aircraft
- B737
- Sky
- a broken layer from 2,100 ft
- Remarks
- base 2,100 ft tops 3,000 ft
- E145 at 4,000 ft, 9 nm northeast, 10:03 am EDT (14:03 UTC): no turbulence, remarks: above tops. At the departure end, 9 nm northeast of the line.
as filed, and in English
IAD UA /OV AML050010/TM 1403/FL040/TP E145/TB NEG/RM ABV TOPS
- Report
- a routine report filed through IAD
- Where
- 10 nm northeast (050°) of AML
- Time
- 14:03 UTC
- Height
- at 4,000 ft
- Aircraft
- E145
- Turbulence
- none
- Remarks
- above tops
- C170 at 1,500 ft, 28 nm north, 9:55 am EDT (13:55 UTC): overcast above 2,300 ft. At the departure end, 28 nm north of the line.
as filed, and in English
FDK UA /OV FDK/TM 1355/FL015/TP C170/SK OVC023
- Report
- a routine report filed through FDK
- Where
- over FDK
- Time
- 13:55 UTC
- Height
- at 1,500 ft
- Aircraft
- C170
- Sky
- overcast from 2,300 ft
- E75S at 2,400 ft, 20 nm east, 9:47 am EDT (13:47 UTC): overcast above 2,400 ft. At the departure end, 20 nm east of the line.
as filed, and in English
DCA UA /OV DCA19004/TM 1347/FL024/TP E75S/SK OVC024
- Report
- a routine report filed through DCA
- Where
- DCA19004
- Time
- 13:47 UTC
- Height
- at 2,400 ft
- Aircraft
- E75S
- Sky
- overcast from 2,400 ft
- B38M at 2,600 ft, 37 nm east, 9:05 am EDT (13:05 UTC): a broken layer above 2,400 ft, remarks: TOP026. At the departure end, 37 nm east of the line.
as filed, and in English
BWI UA /OV BAL270003/TM 1305/FL026/TP B38M/SK BKN024/RM TOP026
- Report
- a routine report filed through BWI
- Where
- 3 nm west (270°) of BAL
- Time
- 13:05 UTC
- Height
- at 2,600 ft
- Aircraft
- B38M
- Sky
- a broken layer from 2,400 ft
- Remarks
- TOP026
- B737 at 1,000 ft, 21 nm southeast, 8:40 am EDT (12:40 UTC): light chop turbulence, remarks: no bases reported on final approach runway 1. At the departure end, 21 nm southeast of the line.
as filed, and in English
DCA UA /OV DCA190003/TM 1240/FL010/TP B737/TB LGT CHOP/RM NO BASES REPORTED ON FINAL APPROACH RWY1
- Report
- a routine report filed through DCA
- Where
- 3 nm south (190°) of DCA
- Time
- 12:40 UTC
- Height
- at 1,000 ft
- Aircraft
- B737
- Turbulence
- light chop
- Remarks
- no bases reported on final approach runway 1
- B783 at 5,000 ft, 30 nm northeast, 8:30 am EDT (12:30 UTC): a routine report with nothing remarked on. At the departure end, 30 nm northeast of the line.
as filed, and in English
BWI UA /OV BAL280010/TM 1230/FL50/TP B783/SK BASE 028 TOP 040
- Report
- a routine report filed through BWI
- Where
- 10 nm west (280°) of BAL
- Time
- 12:30 UTC
- Height
- at 5,000 ft
- Aircraft
- B783
- Sky
- base 2,800 ft top 4,000 ft
- PC12 at 1,100 ft, 8 nm south, 9:15 am EDT (13:15 UTC): no icing, overcast from 1,100 ft to 3,500 ft; clear from 3,500 ft to 60,000 ft, 13 °C, remarks: during the descent. 188 nm along the route, 8 nm south of the line.
as filed, and in English
PKB UA /OV PKB/TM 1315/FL011/TP PC12/SK OVC011-TOP035/SKC/TA 13/IC NEG/RM DURD
- Report
- a routine report filed through PKB
- Where
- over PKB
- Time
- 13:15 UTC
- Height
- at 1,100 ft
- Aircraft
- PC12
- Sky
- OVC011-TOP035 C
- Temperature
- 13 °C
- Icing
- none
- Remarks
- during the descent
- E135 at 1,900 ft, 8 nm south, 8:26 am EDT (12:26 UTC): no icing, a broken layer from 1,200 ft to 1,900 ft, 13 °C, remarks: during the climb. 188 nm along the route, 8 nm south of the line.
as filed, and in English
PKB UA /OV PKB/TM 1226/FL019/TP E135/SK BKN012-TOP019/TA 13/IC NEG/RM DURC
- Report
- a routine report filed through PKB
- Where
- over PKB
- Time
- 12:26 UTC
- Height
- at 1,900 ft
- Aircraft
- E135
- Sky
- a broken layer from 1,200 ft, tops 1,900 ft
- Temperature
- 13 °C
- Icing
- none
- Remarks
- during the climb
- PC12 at 25,000 ft, 46 nm south, 9:04 am EDT (13:04 UTC): light chop turbulence, no icing. 208 nm along the route, 46 nm south of the line.
as filed, and in English
HTS UA /OV HNN/TM 1304/FL250/TP PC12/TB OCNL LGT CHOP/IC NEG
- Report
- a routine report filed through HTS
- Where
- over HNN
- Time
- 13:04 UTC
- Height
- at 25,000 ft
- Aircraft
- PC12
- Turbulence
- occasional light chop
- Icing
- none
- E75S descending, 22 nm north, 11:00 am EDT (15:00 UTC): a routine report with nothing remarked on. 258 nm along the route, 22 nm north of the line.
as filed, and in English
CMH UA /OV CMH/TM 1500/FLDURD/TP E75S/SK B019-T025
- Report
- a routine report filed through CMH
- Where
- over CMH
- Time
- 15:00 UTC
- Height
- during the descent
- Aircraft
- E75S
- Sky
- B019-T025
- C150 at 1,500 ft, 11 nm north, 10:15 am EDT (14:15 UTC): a routine report with nothing remarked on. 258 nm along the route, 11 nm north of the line.
as filed, and in English
CMH UA /OV LCK/TM 1415/FL015/TP C150/SK B016
- Report
- a routine report filed through CMH
- Where
- over LCK
- Time
- 14:15 UTC
- Height
- at 1,500 ft
- Aircraft
- C150
- Sky
- B016
- PLANE , 22 nm north, 10:15 am EDT (14:15 UTC): a routine report with nothing remarked on. 258 nm along the route, 22 nm north of the line.
as filed, and in English
CMH UA /OV CMH/TM 1415/FLDD/TP PLANE/SK B017
- Report
- a routine report filed through CMH
- Where
- over CMH
- Time
- 14:15 UTC
- Height
- at DD
- Aircraft
- PLANE
- Sky
- B017
16 more routine reports are on the map.
Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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 6 forecast points nearest it (EKN, CRW, CMH, CVG, IND, SPI). 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 | 280° at 16 kt | +17 kt | 15 °C | 103 kt | 4 h 54 min | 3:17 pm CDT (20:17 UTC) |
| 6,500 ft | 290° at 18 kt | +18 kt | 14 °C | 102 kt | 4 h 57 min | 3:20 pm CDT (20:20 UTC) |
| 8,500 ft | 290° at 19 kt | +19 kt | 10 °C | 101 kt | 5 h | 3:23 pm CDT (20:23 UTC) |
| 10,500 ft | 300° at 22 kt | +20 kt | 7 °C | 100 kt | 5 h 03 min | 3:26 pm CDT (20:26 UTC) |
| 12,500 ft | 310° at 25 kt | +22 kt | 4 °C | 98 kt | 5 h 09 min | 3:32 pm CDT (20:32 UTC) |
| 14,500 ft | 300° at 26 kt | +24 kt | 0 °C | 96 kt | 5 h 16 min | 3:39 pm CDT (20:39 UTC) |
| 16,500 ft | 300° at 27 kt | +26 kt | -4 °C | 94 kt | 5 h 22 min | 3:45 pm CDT (20:45 UTC) |
| 18,000 ft FL180 | 300° at 29 kt | +27 kt | -7 °C | 93 kt | 5 h 26 min | 3:49 pm CDT (20:49 UTC) |
| 24,000 ft FL240 | 290° at 36 kt | +36 kt | -20 °C | 84 kt | 6 h 01 min | 4:24 pm CDT (21:24 UTC) |
| 30,000 ft FL300 | 280° at 42 kt | +42 kt | -35 °C | 78 kt | 6 h 28 min | 4:51 pm CDT (21:51 UTC) |
| 34,000 ft FL340 | 290° at 50 kt | +49 kt | -41 °C | 71 kt | 7 h 07 min | 5:30 pm CDT (22:30 UTC) |
| 39,000 ft FL390 | 310° at 55 kt | +48 kt | -48 °C | 72 kt | 7 h 01 min | 5:24 pm CDT (22:24 UTC) |
Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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 | 320/20 15° | 340/24 10° | 340/25 4° | 310/28 -7° | 290/32 -19° | 290/36 -36° | 300/49 -43° | 310/48 -50° | |
| CRW | used from 149 nm out; 67 nm from the line | 270/8 | 320/23 15° | 320/22 10° | 330/25 5° | 300/30 -6° | 290/34 -19° | 280/37 -35° | 290/48 -42° | 310/58 -50° |
| CMH | used from 198 nm out; 42 nm from the line | 270/15 | 280/20 14° | 280/21 9° | 290/26 4° | 290/29 -7° | 290/38 -20° | 280/44 -35° | 280/48 -42° | 310/61 -48° |
| CVG | used from 297 nm out; 46 nm from the line | 260/20 | 280/18 15° | 270/19 8° | 290/30 5° | 280/31 -7° | 290/37 -19° | 280/46 -35° | 290/55 -40° | 310/57 -48° |
| IND | used from 347 nm out; 43 nm from the line | 260/18 | 250/20 15° | 260/26 9° | 290/28 5° | 290/30 -7° | 280/40 -20° | 280/46 -35° | 290/53 -38° | 300/58 -47° |
| SPI | used from 495 nm out; 70 nm from the line | 230/24 | 240/21 15° | 260/11 12° | 280/19 6° | 270/23 -8° | 280/34 -20° | 290/55 -33° | 290/62 -37° | 290/55 -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 | marginal VFR Sky: a broken layer at 2,700 feet, a broken layer at 3,300 feet | from the north-northwest (330°) at 14 knots, gusting to 24 | 10+ mi | 2,700 ft | 312 ft | 10:52 am EDT (14:52 UTC) |
| MRB Martinsburg, WV | 30 nm out, 22 nm north of the line, tower | marginal VFR Sky: a broken layer at 2,700 feet | from the northwest (320°) at 7 knots | 10+ mi | 2,700 ft | 564 ft | 15:11 UTC |
| CKB Clarksburg, WV | 129 nm out, 2 nm southwest of the line, tower | marginal VFR Sky: a few clouds at 600 feet, a broken layer at 1,700 feet, overcast at 2,600 feet | from the west (270°) at 3 knots | 10+ mi | 1,700 ft | 1,223 ft | 15:13 UTC |
| PKB Parkersburg, WV | 188 nm out, 8 nm south of the line, tower | marginal VFR Sky: overcast at 1,500 feet | from the west (270°) at 7 knots | 10+ mi | 1,500 ft | 858 ft | 14:53 UTC |
| LHQ Lancaster, OH | 248 nm out, 9 nm north of the line | marginal VFR Sky: overcast at 1,000 feet | from the west-southwest (250°) at 7 knots | 10+ mi | 1,000 ft | 868 ft | 14:53 UTC |
| LCK Columbus, OH | 258 nm out, 11 nm north of the line, tower | IFR Sky: overcast at 800 feet | from the south (180°) at 5 knots | 10+ mi | 800 ft | 743 ft | 14:55 UTC |
| DAY Dayton, OH | 317 nm out, 9 nm north of the line, tower | VFR Sky: a few clouds at 400 feet, a few clouds at 20,000 feet, scattered clouds at 25,000 feet Weather: mist | from the south (170°) at 5 knots | 6 mi | none | 1,009 ft | 14:56 UTC |
| AID Anderson, IN | 386 nm out, 15 nm north of the line, tower | VFR | from the south (190°) at 4 knots | 10+ mi | none | 919 ft | 12:15 UTC |
| IND Indianapolis, IN | 416 nm out, 12 nm south of the line, tower | VFR Sky: a few clouds at 8,000 feet, a few clouds at 25,000 feet | from the southwest (220°) at 9 knots | 10+ mi | none | 796 ft | 14:54 UTC |
| DNV Danville, IL | 475 nm out, 12 nm north of the line | no report just now | 696 ft | ||||
| CMI Champaign/Urbana, IL | destination | VFR | from the southwest (220°) at 9 knots | 10+ mi | none | 754 ft | 9:53 am CDT (14:53 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 CMI when you get there the forecast at the estimated arrival, 3:17 pm CDT (20:17 UTC)
Wind from the southwest at 14 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 25,000 feet VFR
The whole forecast for CMI
- From Mon 10:00 am CDT (15:00 UTC): wind from the southwest at 12 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Mon 1:00 pm CDT (18:00 UTC): wind from the southwest at 14 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Mon 7:00 pm CDT (00:00 UTC): wind from the south-southwest at 10 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Tue 1:00 am CDT (06:00 UTC): wind from the southwest at 10 knots, visibility more than 6 miles, low-level wind shear, clear skies
The forecast for IAD, the departure
- From Mon 11:00 am EDT (15:00 UTC): wind from the north-northwest at 14 knots, gusting to 21, visibility more than 6 miles, a broken layer at 2,500 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, scattered clouds at 2,500 feet, a broken layer at 4,000 feet
- From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 11 knots, gusting to 18, visibility more than 6 miles, a broken layer at 4,500 feet
- From Mon 5:00 pm EDT (21:00 UTC): wind from the northwest at 7 knots, visibility more than 6 miles, scattered clouds at 5,000 feet
- From Mon 8:00 pm EDT (00:00 UTC): wind from the west-northwest at 3 knots, visibility more than 6 miles, a few clouds at 5,000 feet
- From Tue 10:00 am EDT (14:00 UTC): wind from the south at 5 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 CMI 6:18 pm CDT (23:18 UTC) (civil twilight ends 6:45 pm CDT (23:45 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, University Of Illinois/Willard Airport.