Baltimore/Washington International Thurgood Marshall to Greenville Spartanburg International BWI → GSP
370 nautical miles (425 statute miles) southwest on a straight line, true course 228°, about 239° magnetic at the departure end (variation 11W). At 120 knots that is 2 h 44 min at the quickest height in today's winds (8,500 ft, a 15-knot tailwind), arriving about 11:52 am EDT (15:52 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: 1,423 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 first 60 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the first 150 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 50 to 340 nm out.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the last 280 nm of the route.
- AIRMET TANGO 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft. Over the last 130 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Near the route, 250 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 BWI.
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 08:00–15:00 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 (RIC, ROA, TRI, GSP). 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 | 340° at 29 kt | −11 kt | 11 °C | 131 kt | 2 h 49 min | 11:57 am EDT (15:57 UTC) |
| 6,500 ft | 340° at 28 kt | −13 kt | 12 °C | 133 kt | 2 h 47 min | 11:55 am EDT (15:55 UTC) |
| 8,500 ft | 350° at 31 kt | −15 kt | 9 °C | 135 kt | 2 h 44 min | 11:52 am EDT (15:52 UTC) |
| 10,500 ft | 340° at 31 kt | −13 kt | 7 °C | 133 kt | 2 h 47 min | 11:55 am EDT (15:55 UTC) |
| 12,500 ft | 340° at 30 kt | −11 kt | 3 °C | 131 kt | 2 h 49 min | 11:57 am EDT (15:57 UTC) |
| 14,500 ft | 330° at 32 kt | −10 kt | -1 °C | 130 kt | 2 h 51 min | 11:59 am EDT (15:59 UTC) |
| 16,500 ft | 330° at 34 kt | −9 kt | -5 °C | 129 kt | 2 h 52 min | 12:00 pm EDT (16:00 UTC) |
| 18,000 ft FL180 | 330° at 36 kt | −8 kt | -8 °C | 128 kt | 2 h 53 min | 12:01 pm EDT (16:01 UTC) |
| 24,000 ft FL240 | 340° at 41 kt | −14 kt | -20 °C | 134 kt | 2 h 46 min | 11:54 am EDT (15:54 UTC) |
| 30,000 ft FL300 | 330° at 47 kt | −13 kt | -33 °C | 133 kt | 2 h 47 min | 11:55 am EDT (15:55 UTC) |
| 34,000 ft FL340 | 330° at 45 kt | −11 kt | -40 °C | 131 kt | 2 h 49 min | 11:57 am EDT (15:57 UTC) |
| 39,000 ft FL390 | 300° at 39 kt | +10 kt | -48 °C | 110 kt | 3 h 22 min | 12:30 pm EDT (16:30 UTC) |
Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| RIC | used from 0 nm out; 84 nm from the line | 350/34 | 340/27 12° | 340/36 8° | 330/31 3° | 310/32 -9° | 320/34 -21° | 300/37 -34° | 290/37 -39° | 290/42 -46° |
| ROA | used from 150 nm out; 30 nm from the line | 310/32 | 340/32 14° | 350/25 9° | 340/24 3° | 340/42 -8° | 340/52 -20° | 350/62 -34° | 350/64 -39° | 310/44 -48° |
| TRI | used from 250 nm out; 80 nm from the line | 340/25 11° | 350/37 9° | 350/34 6° | 340/39 -7° | 340/43 -19° | 340/55 -32° | 330/58 -42° | 320/37 -50° | |
| GSP | used from 300 nm out; 45 nm from the line | 340/30 | 360/24 13° | 350/29 10° | 340/33 6° | 340/40 -7° | 350/44 -19° | 340/59 -31° | 350/55 -41° | 300/29 -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 |
|---|---|---|---|---|---|---|---|
| BWI Baltimore, MD | departure | no report just now | 143 ft | ||||
| DCA Washington, DC | 30 nm out, 5 nm east of the line, tower | no report just now | 14 ft | ||||
| HEF Washington, DC | 50 nm out, 7 nm northwest of the line, tower | no report just now | 192 ft | ||||
| CHO Charlottesville, VA | 100 nm out, 12 nm northwest of the line, tower | no report just now | 640 ft | ||||
| LYH Lynchburg, VA | 160 nm out, 3 nm southwest of the line, tower | no report just now | 938 ft | ||||
| MTV Martinsville, VA | 220 nm out, 2 nm southeast of the line | no report just now | 948 ft | ||||
| INT Winston Salem, NC | 250 nm out, 17 nm southeast of the line, tower | no report just now | 969 ft | ||||
| HKY Hickory, NC | 310 nm out, 8 nm north of the line, tower | no report just now | 1,189 ft | ||||
| EHO Shelby, NC | 330 nm out, 7 nm south of the line | no report just now | 846 ft | ||||
| GSP Greer, SC | destination | no report just now | 963 ft |
The highest airport on this list sits at 1,189 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At GSP when you get there the forecast at the estimated arrival, 11:52 am EDT (15:52 UTC)
GSP has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8800 Baltimore, MD, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 6 nm from the route, at the departure end · drones kept away from a public gathering · starts Saturday 17 October · ZDC
- 4/9383 WASHINGTON, DC., USA on the route, 20 nm along the route · security · ZDC
- 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 11 nm from the route, 30 nm along the route · a VIP movement · today · ZDC
Daylight
Sunset at BWI 6:32 pm EDT (22:32 UTC), at GSP 6:58 pm EDT (22:58 UTC) (civil twilight ends 7:23 pm EDT (23:23 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: Baltimore/Washington International Thurgood Marshall, Greenville Spartanburg International.