Plan a flight · Mon 11:00 am EDT (15:00 UTC)

Greenville Spartanburg International to Denver International GSP → DEN

1,109 nautical miles (1,276 statute miles) west on a straight line, true course 292°, about 298° magnetic at the departure end (variation 6W). At 120 knots that is 10 h 34 min at the quickest height in today's winds (4,500 ft, a 15-knot headwind), arriving about 7:34 pm MDT (01:34 UTC), after sunset at the destination. Right now GSP is VFR, wind from the northwest (320°) at 6 knots, gusting to 16; DEN is VFR, wind from the south-southwest (210°) at 12 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: 718 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 below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the first 90 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 route from 509 to 849 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the last 100 nm of the route.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the last 0 nm of 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 GSP.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

urgent C680 descending, 24 nm northeast, 9:32 am EDT (13:32 UTC): remarks: low-level wind shear a 10-knot gain of airspeed knots during the descent runway 35 avl. At the departure end, 24 nm northeast of the line.
as filed, and in English
```
AVL UUA /OV AVL/TM 1332/FLDURD/TP C680/RM LLWS +10 KT DURD RY35 AVL
```
Report
an urgent report filed through AVL
Where
over AVL
Time
13:32 UTC
Height
during the descent
Aircraft
C680
Remarks
low-level wind shear a 10-knot gain of airspeed knots during the descent runway 35 avl
urgent C172 at 6,700 ft, 19 nm southwest, 8:54 am EDT (12:54 UTC): remarks: low-level wind shear + 10 knots during the climb. At the destination end, 19 nm southwest of the line.
as filed, and in English
```
APA UUA /OV KAPA/TM 1254/FL067/TP C172/RM LLWS +/- 10 KTS DURC
```
Report
an urgent report filed through APA
Where
over KAPA
Time
12:54 UTC
Height
at 6,700 ft
Aircraft
C172
Remarks
low-level wind shear + 10 knots during the climb
urgent FA7X at 6,800 ft, 19 nm southwest, 8:40 am EDT (12:40 UTC): remarks: low-level wind shear a 40-knot loss of airspeed knots during the climb runway 35R. At the destination end, 19 nm southwest of the line.
as filed, and in English
```
APA UUA /OV KAPA/TM 1240/FL068/TP FA7X/RM LLWS -40 KTS DURC RY 35R
```
Report
an urgent report filed through APA
Where
over KAPA
Time
12:40 UTC
Height
at 6,800 ft
Aircraft
FA7X
Remarks
low-level wind shear a 40-knot loss of airspeed knots during the climb runway 35R
urgent TBM7 at 100 ft, 20 nm southwest, 8:30 am EDT (12:30 UTC): light chop turbulence, remarks: low-level wind shear a 10-knot loss of airspeed. At the destination end, 20 nm southwest of the line.
as filed, and in English
```
APA UUA /OV APA140001/TM 1230/FL001/TP TBM7/TB LGT CHOP/RM LLWS +-10KTS
```
Report
an urgent report filed through APA
Where
1 nm southeast (140°) of APA
Time
12:30 UTC
Height
at 100 ft
Aircraft
TBM7
Turbulence
light chop
Remarks
low-level wind shear a 10-knot loss of airspeed
BE58 at 8,000 ft, 38 nm north, 10:10 am EDT (14:10 UTC): moderate chop turbulence. At the departure end, 38 nm north of the line.
as filed, and in English
```
AVL UA /OV SUG020010/TM 1410/FL080/TP BE58/TB MOD CHOP
```
Report
a routine report filed through AVL
Where
10 nm north (020°) of SUG
Time
14:10 UTC
Height
at 8,000 ft
Aircraft
BE58
Turbulence
moderate chop
B38M at 12,000 ft, 5 nm southwest, 10:07 am EDT (14:07 UTC): moderate turbulence, remarks: from 11,000 ft to 12,000 ft. At the destination end, 5 nm southwest of the line.
as filed, and in English
```
DEN UA /OV DEN090025/TM 1407/FL120/TP B38M/TB MOD/RM 110-120
```
Report
a routine report filed through DEN
Where
25 nm east (090°) of DEN
Time
14:07 UTC
Height
at 12,000 ft
Aircraft
B38M
Turbulence
moderate
Remarks
from 11,000 ft to 12,000 ft
C172 at 9,500 ft, 49 nm south, 8:43 am EDT (12:43 UTC): moderate chop turbulence. At the destination end, 49 nm south of the line.
as filed, and in English
```
COS UA /OV BRK348/005/TM 1243/FL095/TP C172/TB TB MOD CHOP
```
Report
a routine report filed through COS
Where
BRK348/005
Time
12:43 UTC
Height
at 9,500 ft
Aircraft
C172
Turbulence
turbulence moderate chop
B737 at 21,000 ft, 22 nm northwest, 10:05 am EDT (14:05 UTC): moderate turbulence, remarks: mountain wave a 30-knot gain of airspeed from 25,000 ft to 15,000 ft during the descent. At the destination end, 22 nm northwest of the line.
as filed, and in English
```
DEN UA /OV DEN310025/TM 1405/FL210/TP B737/TB MOD TURB/RM MTN WAVE +30KTS 250-150 DURD
```
Report
a routine report filed through DEN
Where
25 nm northwest (310°) of DEN
Time
14:05 UTC
Height
at 21,000 ft
Aircraft
B737
Turbulence
moderate turbulence
Remarks
mountain wave a 30-knot gain of airspeed from 25,000 ft to 15,000 ft during the descent
B738 descending, 37 nm northwest, 9:01 am EDT (13:01 UTC): moderate turbulence from 11,000 ft to 20,000 ft. At the destination end, 37 nm northwest of the line.
as filed, and in English
```
DEN UA /OV 40NW DEN/TM 1301/FLDURD/TP B738/TB MOD 200-110
```
Report
a routine report filed through DEN
Where
40NW den
Time
13:01 UTC
Height
during the descent
Aircraft
B738
Turbulence
moderate from 20,000 ft to 11,000 ft
B738 descending, 41 nm southwest, 8:55 am EDT (12:55 UTC): moderate turbulence from 16,000 ft to 20,000 ft. At the destination end, 41 nm southwest of the line.
as filed, and in English
```
DEN UA /OV 40SW DEN/TM 1255/FLDURD/TP B738/TB MOD 200-160
```
Report
a routine report filed through DEN
Where
40SW den
Time
12:55 UTC
Height
during the descent
Aircraft
B738
Turbulence
moderate from 20,000 ft to 16,000 ft
C172 at 200 ft, 18 nm southwest, 8:35 am EDT (12:35 UTC): moderate turbulence, remarks: low-level wind shear a 15-knot loss of airspeed. At the destination end, 18 nm southwest of the line.
as filed, and in English
```
APA UA /OV APA350001/TM 1235/FL002/TP C172/TB MOD TURB/RM LLWS +-15KTS
```
Report
a routine report filed through APA
Where
1 nm north (350°) of APA
Time
12:35 UTC
Height
at 200 ft
Aircraft
C172
Turbulence
moderate turbulence
Remarks
low-level wind shear a 15-knot loss of airspeed
B737 at 16,000 ft, 37 nm northwest, 8:23 am EDT (12:23 UTC): moderate turbulence, remarks: during the descent. At the destination end, 37 nm northwest of the line.
as filed, and in English
```
DEN UA /OV DEN320040/TM 1223/FL160/TP B737/TB MOD/RM DURD
```
Report
a routine report filed through DEN
Where
40 nm northwest (320°) of DEN
Time
12:23 UTC
Height
at 16,000 ft
Aircraft
B737
Turbulence
moderate
Remarks
during the descent
B739 at 34,000 ft, 17 nm northeast, 10:05 am EDT (14:05 UTC): no turbulence, no icing, remarks: ztlfd 34. At the departure end, 17 nm northeast of the line.
as filed, and in English
```
ATL UA /OV SPA/TM 1405/FL340/TP B739/TB NEG/IC NEG/RM ZTLFD 34
```
Report
a routine report filed through ATL
Where
over SPA
Time
14:05 UTC
Height
at 34,000 ft
Aircraft
B739
Turbulence
none
Icing
none
Remarks
ztlfd 34
A320 at 31,000 ft, 17 nm northeast, 9:01 am EDT (13:01 UTC): light turbulence, remarks: ztlfd 34. At the departure end, 17 nm northeast of the line.
as filed, and in English
```
ATL UA /OV SPA/TM 1301/FL310/TP A320/TB LGT/RM ZTLFD 34
```
Report
a routine report filed through ATL
Where
over SPA
Time
13:01 UTC
Height
at 31,000 ft
Aircraft
A320
Turbulence
light
Remarks
ztlfd 34

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 11 forecast points nearest it (GSP, TYS, BNA, CGI, COU, SGF, MKC, SLN, GCK, GLD, DEN). 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	250° at 19 kt	+15 kt	20 °C	105 kt	10 h 34 min	7:34 pm MDT (01:34 UTC)
6,500 ft	250° at 20 kt	+18 kt	17 °C	102 kt	10 h 52 min	7:52 pm MDT (01:52 UTC)
8,500 ft	250° at 21 kt	+18 kt	13 °C	102 kt	10 h 52 min	7:52 pm MDT (01:52 UTC)
10,500 ft	260° at 24 kt	+21 kt	9 °C	99 kt	11 h 12 min	8:12 pm MDT (02:12 UTC)
12,500 ft	260° at 27 kt	+24 kt	5 °C	96 kt	11 h 33 min	8:33 pm MDT (02:33 UTC)
14,500 ft	260° at 28 kt	+25 kt	1 °C	95 kt	11 h 40 min	8:40 pm MDT (02:40 UTC)
16,500 ft	260° at 30 kt	+27 kt	-4 °C	93 kt	11 h 55 min	8:55 pm MDT (02:55 UTC)
18,000 ft FL180	260° at 31 kt	+28 kt	-7 °C	92 kt	12 h 03 min	9:03 pm MDT (03:03 UTC)
24,000 ft FL240	260° at 37 kt	+33 kt	-19 °C	87 kt	12 h 45 min	9:45 pm MDT (03:45 UTC)
30,000 ft FL300	270° at 58 kt	+58 kt	-30 °C	62 kt	17 h 53 min	2:53 am MDT (08:53 UTC)
34,000 ft FL340	270° at 62 kt	+62 kt	-38 °C	58 kt	19 h 07 min	4:07 am MDT (10:07 UTC)
39,000 ft FL390	280° at 57 kt	+58 kt	-49 °C	62 kt	17 h 53 min	2:53 am MDT (08:53 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
GSP	used from 0 nm out; 25 nm from the line	330/14	360/26 17°	360/22 11°	330/20 6°	310/27 -5°	320/24 -18°	310/28 -33°	320/38 -40°	330/30 -51°
TYS	used from 50 nm out; 32 nm from the line	320/8	330/17 16°	320/17 9°	310/24 6°	290/23 -6°	290/28 -19°	300/36 -33°	310/48 -40°	320/46 -50°
BNA	used from 150 nm out; 56 nm from the line	270/14	270/10 14°	280/19 11°	280/26 6°	280/25 -6°	280/31 -18°	300/44 -32°	300/53 -40°	310/51 -49°
CGI	used from 300 nm out; 59 nm from the line	250/22	250/17 15°	250/25 11°	260/27 7°	270/35 -7°	280/38 -17°	300/63 -31°	300/62 -38°	300/55 -49°
COU	used from 449 nm out; 85 nm from the line	240/28	240/22 17°	250/18 12°	260/22 6°	270/23 -7°	260/39 -19°	290/70 -30°	290/71 -37°	290/58 -48°
SGF	used from 499 nm out; 54 nm from the line	220/23	240/29 16°	240/21 13°	240/15 7°	270/28 -7°	260/34 -18°	280/67 -29°	290/59 -37°	290/51 -49°
MKC	used from 599 nm out; 54 nm from the line	220/35	240/30 21°	240/27 13°	240/31 6°	260/31 -7°	250/43 -21°	270/70 -28°	280/72 -36°	280/59 -49°
SLN	used from 699 nm out; 52 nm from the line	210/26	250/36 22°	240/39 14°	240/38 7°	240/42 -9°	240/49 -20°	260/75 -27°	260/76 -36°	270/71 -48°
GCK	used from 849 nm out; 90 nm from the line		250/23 20°	230/35 13°	240/47 7°	240/42 -7°	250/43 -20°	240/81 -28°	250/87 -37°	250/83 -49°
GLD	used from 899 nm out; 45 nm from the line		240/22	250/24 13°	250/39 6°	230/42 -8°	230/55 -21°	240/87 -30°	240/96 -36°	250/93 -48°
DEN	used from 1049 nm out; 35 nm from the line			230/7 11°	230/13 4°	230/40 -9°	230/48 -20°	240/66 -32°	240/88 -38°	230/100 -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
GSP Greer, SC	departure	VFR	from the northwest (320°) at 6 knots, gusting to 16	10+ mi	none	963 ft	10:53 am EDT (14:53 UTC)
TYS Knoxville, TN	100 nm out, 19 nm north of the line, tower	VFR Sky: a few clouds at 400 feet, a few clouds at 2,300 feet, a few clouds at 18,000 feet	from the south-southwest (210°) at 4 knots	10+ mi	none	986 ft	14:53 UTC
MQY Smyrna, TN	220 nm out, 13 nm south of the line, tower	VFR	from the southeast (130°) at 4 knots	10+ mi	none	543 ft	14:56 UTC
BNA Nashville, TN	230 nm out, 9 nm south of the line, tower	VFR Sky: scattered clouds at 25,000 feet	calm	10+ mi	none	599 ft	14:53 UTC
CGI Cape Girardeau, MO	380 nm out, 9 nm north of the line, tower	reported, no category	calm		none	341 ft	14:03 UTC
TBN Fort Leonard Wood, MO	509 nm out, 2 nm north of the line, tower	VFR	from the south-southwest (200°) at 10 knots, gusting to 15	10+ mi	none	1,159 ft	14:55 UTC
BUM Butler, MO	619 nm out, 6 nm northeast of the line	no report just now				893 ft
HRU Herington, KS	739 nm out, 3 nm east of the line	no report just now				1,480 ft
SLN Salina, KS	779 nm out, 4 nm southeast of the line, tower	VFR	from the south-southwest (200°) at 19 knots, gusting to 28	10+ mi	none	1,288 ft	14:53 UTC
CBK Colby, KS	939 nm out, 2 nm north of the line	VFR	from the southwest (230°) at 15 knots	10+ mi	none	3,188 ft	14:55 UTC
DEN Denver, CO	destination	VFR Sky: a few clouds at 8,000 feet, a few clouds at 12,000 feet	from the south-southwest (210°) at 12 knots	10+ mi	none	5,433 ft	8:53 am MDT (14:53 UTC)

The highest airport on this list sits at 5,433 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At DEN when you get there the forecast at the estimated arrival, 7:34 pm MDT (01:34 UTC)

Wind from the south at 9 knots, visibility more than 6 miles, clear skies VFR

The whole forecast for DEN

From Mon 9:00 am MDT (15:00 UTC): wind from the south-southwest at 12 knots, visibility more than 6 miles, a few clouds at 8,000 feet, a few clouds at 12,000 feet
From Mon 11:00 am MDT (17:00 UTC): wind from the southwest at 14 knots, gusting to 21, visibility more than 6 miles, clear skies
At times between Mon 11:00 am MDT (17:00 UTC) and 1:00 pm MDT (19:00 UTC): wind light and variable
From Mon 7:00 pm MDT (01:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, clear skies
From Mon 11:00 pm MDT (05:00 UTC): wind from the north at 10 knots, visibility more than 6 miles, a few clouds at 2,000 feet, scattered clouds at 4,000 feet
From Tue 4:00 am MDT (10:00 UTC): wind from the north-northeast at 8 knots, visibility more than 6 miles, a broken layer at 2,000 feet
From Tue 10:00 am MDT (16:00 UTC): wind from the northeast at 7 knots, visibility more than 6 miles, a few clouds at 2,000 feet, a broken layer at 4,000 feet

The forecast for GSP, the departure

From Mon 8:00 am EDT (12:00 UTC): wind from the west-northwest at 11 knots, visibility more than 6 miles, a few clouds at 5,000 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the north-northwest at 10 knots, gusting to 18, visibility more than 6 miles, clear skies
From Mon 5:00 pm EDT (21:00 UTC): wind from the north-northwest at 5 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Tue 1:00 am EDT (05:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 25,000 feet

Temporary flight restrictions on the line or within 25 nm of it

6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 5 nm from the route, 240 nm along the route · security · until 1 August · ZME

Daylight

Sunset at GSP 6:58 pm EDT (22:58 UTC), at DEN 6:22 pm MDT (00:22 UTC) (civil twilight ends 6:49 pm MDT (00:49 UTC)). At 120 knots the arrival at DEN is after sunset there (6:24 pm MDT (00:24 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

Radar now, the Southeast · loop National Weather Service

Radar now, the lower Mississippi valley · loop National Weather Service

Radar now, the upper Mississippi valley · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

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: Greenville Spartanburg International, Denver International.