Washington Dulles International to Gulfport-Biloxi International IAD → GPT
768 nautical miles (884 statute miles) southwest on a straight line, true course 232°, about 242° magnetic at the departure end (variation 10W). At 120 knots that is 5 h 32 min at the quickest height in today's winds (34,000 ft, a 19-knot tailwind), arriving about 11:32 am CDT (16:32 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: 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
- 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 309 nm of the route.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the first 439 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 90 to 170 nm out.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 150 to 369 nm out.
- AIRMET TANGO 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft. Over the route from 199 to 429 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
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 9 forecast points nearest it (RIC, EKN, ROA, TRI, GSP, ATL, CSG, MGM, MOB). 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 22 kt | −6 kt | 11 °C | 126 kt | 6 h 06 min | 12:06 pm CDT (17:06 UTC) |
| 6,500 ft | 340° at 23 kt | −9 kt | 14 °C | 129 kt | 5 h 57 min | 11:57 am CDT (16:57 UTC) |
| 8,500 ft | 350° at 25 kt | −12 kt | 11 °C | 132 kt | 5 h 49 min | 11:49 am CDT (16:49 UTC) |
| 10,500 ft | 350° at 24 kt | −10 kt | 7 °C | 130 kt | 5 h 54 min | 11:54 am CDT (16:54 UTC) |
| 12,500 ft | 340° at 22 kt | −8 kt | 4 °C | 128 kt | 6 h | 12:00 pm CDT (17:00 UTC) |
| 14,500 ft | 340° at 25 kt | −8 kt | 0 °C | 128 kt | 6 h | 12:00 pm CDT (17:00 UTC) |
| 16,500 ft | 340° at 29 kt | −8 kt | -4 °C | 128 kt | 6 h | 12:00 pm CDT (17:00 UTC) |
| 18,000 ft FL180 | 340° at 31 kt | −9 kt | -7 °C | 129 kt | 5 h 57 min | 11:57 am CDT (16:57 UTC) |
| 24,000 ft FL240 | 340° at 36 kt | −14 kt | -19 °C | 134 kt | 5 h 44 min | 11:44 am CDT (16:44 UTC) |
| 30,000 ft FL300 | 340° at 47 kt | −15 kt | -32 °C | 135 kt | 5 h 41 min | 11:41 am CDT (16:41 UTC) |
| 34,000 ft FL340 | 340° at 49 kt | −19 kt | -41 °C | 139 kt | 5 h 32 min | 11:32 am CDT (16:32 UTC) |
| 39,000 ft FL390 | 330° at 33 kt | −5 kt | -50 °C | 125 kt | 6 h 09 min | 12:09 pm CDT (17:09 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; 76 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° |
| EKN | used from 50 nm out; 70 nm from the line | 330/20 10° | 350/29 7° | 340/32 2° | 340/44 -8° | 350/50 -21° | 350/63 -35° | 340/69 -40° | 330/42 -50° | |
| ROA | used from 100 nm out; 29 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 199 nm out; 63 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 299 nm out; 41 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° |
| ATL | used from 399 nm out; 46 nm from the line | 330/32 | 340/36 17° | 350/34 10° | 340/25 6° | 330/27 -6° | 350/35 -18° | 330/49 -32° | 340/47 -41° | 340/27 -51° |
| CSG | used from 499 nm out; 56 nm from the line | 330/27 | 340/28 16° | 350/28 11° | 330/17 6° | 340/25 -6° | 350/33 -18° | 330/46 -32° | 340/45 -41° | 350/31 -52° |
| MGM | used from 549 nm out; 22 nm from the line | 320/19 | 330/16 17° | 340/21 11° | 330/11 5° | 330/27 -6° | 330/21 -17° | 330/37 -32° | 340/44 -40° | 360/30 -52° |
| MOB | used from 648 nm out; 55 nm from the line | L/V | L/V 18° | 020/8 11° | L/V 6° | 330/12 -5° | 330/23 -17° | 330/30 -32° | 350/39 -41° | 340/40 -53° |
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 | no report just now | 312 ft | ||||
| CHO Charlottesville, VA | 70 nm out, 9 nm southeast of the line, tower | no report just now | 640 ft | ||||
| ROA Roanoke, VA | 150 nm out, 4 nm southwest of the line, tower | no report just now | 1,175 ft | ||||
| HLX Galax Hillsville, VA | 209 nm out, 3 nm northeast of the line | no report just now | 2,693 ft | ||||
| GEV Jefferson, NC | 239 nm out, 4 nm west of the line | no report just now | 3,177 ft | ||||
| AVL Asheville, NC | 319 nm out, 6 nm south of the line, tower | no report just now | 2,163 ft | ||||
| RYY Atlanta, GA | 459 nm out, 5 nm northeast of the line, tower | no report just now | 1,040 ft | ||||
| CTJ Carrollton, GA | 489 nm out, 2 nm west of the line | no report just now | 1,164 ft | ||||
| SEM Selma, AL | 608 nm out, 8 nm northwest of the line, tower | no report just now | 166 ft | ||||
| MVC Monroeville, AL | 658 nm out, 17 nm southeast of the line | no report just now | 419 ft | ||||
| PQL Pascagoula, MS | 748 nm out, 18 nm southeast of the line, tower | no report just now | 16 ft | ||||
| GPT Gulfport, MS | destination | no report just now | 28 ft |
The highest airport on this list sits at 3,177 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At GPT when you get there the forecast at the estimated arrival, 11:32 am CDT (16:32 UTC)
GPT has no terminal forecast; use the nearest airport that does.
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 GPT 6:28 pm CDT (23:28 UTC) (civil twilight ends 6:52 pm CDT (23:52 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, Gulfport-Biloxi International.