Plan a flight · Mon 3:04 am EDT (07:04 UTC)

Portland International Jetport to Greenville Spartanburg International PWM → GSP

762 nautical miles (877 statute miles) southwest on a straight line, true course 230°, about 245° magnetic at the departure end (variation 15W). At 120 knots that is 6 h 45 min at the quickest height in today's winds (4,500 ft, a 7-knot headwind), arriving about 9:49 am EDT (13:49 UTC). Right now PWM is marginal VFR, wind from the north-northeast (020°) at 4 knots; GSP is VFR, wind from the west-southwest (250°) at 4 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: 3 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 574 nm of the route.
AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the first 109 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 544 nm of the route.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 10,000 ft. Over the first 148 nm of the route.
AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft. Over the last 237 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 574 to 603 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 643 to 742 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 PWM.

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

UAL330 at 35,000 ft, 9 nm north, 12:30 am EDT (04:30 UTC): moderate turbulence, wind 235° at 92 knots. 79 nm along the route, 9 nm north of the line.
as filed, and in English
```
ARP UAL330 4257N 07145W 0430 F350 235/092KT TB MOD TURB CONT MOD CHOP IC
```
Report
a routine report filed through ARP
C560 at 13,000 ft, 6 nm south, 2:38 am EDT (06:38 UTC): moderate turbulence, overcast above 19,000 ft, heavy rain, remarks: during the descent. 317 nm along the route, 6 nm south of the line.
as filed, and in English
```
PHL UA /OV 20 NW PHL/TM 0638/FL130 /TP C560/SK OVC190/WX +RA/TB MOD/RM DURD
```
Report
a routine report filed through PHL
Where
20 northwest phl
Time
06:38 UTC
Height
at 13,000 ft
Aircraft
C560
Sky
overcast from 19,000 ft
Weather
heavy rain
Turbulence
moderate
Remarks
during the descent
B763 descending, 4 nm northeast, 2:21 am EDT (06:21 UTC): overcast above 40,000 ft. 69 nm along the route, 4 nm northeast of the line.
as filed, and in English
```
MHT UA /OV KMHT/TM 0621/FLDURD/TP B763/SK OVC004
```
Report
a routine report filed through MHT
Where
over KMHT
Time
06:21 UTC
Height
during the descent
Aircraft
B763
Sky
overcast from 400 ft
B763 descending, 4 nm northeast, 1:55 am EDT (05:55 UTC): a routine report with nothing remarked on. 69 nm along the route, 4 nm northeast of the line.
as filed, and in English
```
MHT UA /OV RWY 35/TM 0555/FLDURD/TP B763/SK 004-005 FT
```
Report
a routine report filed through MHT
Where
runway 35
Time
05:55 UTC
Height
during the descent
Aircraft
B763
Sky
from 400 ft to 500 ft ft
CRJ7 descending, 4 nm northeast, 12:09 am EDT (04:09 UTC): a routine report with nothing remarked on. 69 nm along the route, 4 nm northeast of the line.
as filed, and in English
```
MHT UA /OV RWY 6/TM 0409/FLDURD/TP CRJ7/SK 006
```
Report
a routine report filed through MHT
Where
runway 6
Time
04:09 UTC
Height
during the descent
Aircraft
CRJ7
Sky
at 600 ft
GA6C descending, 15 nm northwest, 12:32 am EDT (04:32 UTC): overcast above 1,000 ft, remarks: bases OVC010. 218 nm along the route, 15 nm northwest of the line.
as filed, and in English
```
SWF UA /OV SWF 270005/TM 0432/FLDURD/TP GA6C/SK OVC010/RM BASES OVC010
```
Report
a routine report filed through SWF
Where
5 nm west (270°) of SWF
Time
04:32 UTC
Height
during the descent
Aircraft
GA6C
Sky
overcast from 1,000 ft
Remarks
bases OVC010
B763 at 800 ft, 36 nm southeast, 1:51 am EDT (05:51 UTC): a broken layer, remarks: bases at at 80,000 ft and tops 1500. 237 nm along the route, 36 nm southeast of the line.
as filed, and in English
```
JFK UA /OV JFK 2 MILES SOUTHEAST/TM 0551/FL008/TP B763/SK BKN/RM BASES AT 800 AND TOPS 1500
```
Report
a routine report filed through JFK
Where
jfk 2 miles southeast
Time
05:51 UTC
Height
at 800 ft
Aircraft
B763
Sky
a broken layer
Remarks
bases at at 80,000 ft and tops 1500

Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 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 (PWM, BOS, BDL, JFK, ACY, 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	280° at 13 kt	+7 kt	11 °C	113 kt	6 h 45 min	9:49 am EDT (13:49 UTC)
6,500 ft	290° at 17 kt	+9 kt	11 °C	111 kt	6 h 52 min	9:56 am EDT (13:56 UTC)
8,500 ft	280° at 18 kt	+11 kt	9 °C	109 kt	6 h 59 min	10:03 am EDT (14:03 UTC)
10,500 ft	270° at 20 kt	+14 kt	6 °C	106 kt	7 h 11 min	10:15 am EDT (14:15 UTC)
12,500 ft	260° at 22 kt	+18 kt	3 °C	102 kt	7 h 28 min	10:32 am EDT (14:32 UTC)
14,500 ft	260° at 25 kt	+21 kt	-2 °C	99 kt	7 h 42 min	10:46 am EDT (14:46 UTC)
16,500 ft	260° at 28 kt	+24 kt	-6 °C	96 kt	7 h 56 min	11:00 am EDT (15:00 UTC)
18,000 ft FL180	260° at 31 kt	+26 kt	-9 °C	94 kt	8 h 06 min	11:10 am EDT (15:10 UTC)
24,000 ft FL240	250° at 38 kt	+35 kt	-20 °C	85 kt	8 h 58 min	12:02 pm EDT (16:02 UTC)
30,000 ft FL300	240° at 57 kt	+55 kt	-32 °C	65 kt	11 h 43 min	2:47 pm EDT (18:47 UTC)
34,000 ft FL340	240° at 69 kt	+67 kt	-40 °C	53 kt	14 h 23 min	5:27 pm EDT (21:27 UTC)
39,000 ft FL390	240° at 59 kt	+57 kt	-50 °C	63 kt	12 h 06 min	3:10 pm EDT (19:10 UTC)

Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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
PWM	used from 0 nm out; 25 nm from the line	180/9	280/28 9°	230/30 6°	250/22 0°	240/45 -9°	230/63 -20°	230/72 -34°	240/87 -43°	240/94 -54°
BOS	used from 49 nm out; 39 nm from the line	110/20	200/26 12°	280/24 8°	260/29 3°	250/47 -10°	230/59 -19°	230/74 -33°	240/95 -41°	240/96 -53°
BDL	used from 99 nm out; 25 nm from the line	120/24	290/23 12°	280/21 8°	250/36 3°	250/41 -11°	230/48 -21°	230/78 -32°	230/96 -41°	230/86 -52°
JFK	used from 198 nm out; 38 nm from the line	250/18	250/23 14°	240/33 9°	240/33 4°	240/38 -10°	240/45 -21°	230/86 -32°	230/102 -40°	230/84 -51°
ACY	used from 297 nm out; 65 nm from the line	220/19	220/18 14°	210/36 9°	210/35 5°	220/36 -8°	240/49 -21°	220/90 -31°	230/103 -40°	230/81 -50°
RIC	used from 396 nm out; 88 nm from the line	270/23	280/19 11°	270/18 8°	240/22 4°	230/39 -7°	220/55 -18°	220/75 -30°	230/83 -39°	230/64 -50°
ROA	used from 495 nm out; 65 nm from the line	310/29	330/31 13°	340/28 7°	330/25 3°	310/32 -8°	300/32 -22°	290/32 -31°	270/35 -38°	270/32 -47°
TRI	used from 643 nm out; 78 nm from the line		330/22 11°	330/29 7°	330/32 3°	330/36 -8°	320/34 -19°	320/36 -34°	320/43 -39°	320/46 -47°
GSP	used from 692 nm out; 45 nm from the line	320/22	340/19 13°	320/18 8°	310/24 5°	300/34 -7°	300/36 -18°	290/30 -33°	300/32 -39°	320/42 -49°

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
PWM Portland, ME	departure	marginal VFR Sky: overcast at 1,900 feet	from the north-northeast (020°) at 4 knots	10+ mi	1,900 ft	75 ft	2:51 am EDT (06:51 UTC)
MHT Manchester, NH	69 nm out, 4 nm northeast of the line, tower	marginal VFR Sky: scattered clouds at 400 feet, overcast at 1,200 feet Weather: mist	from the north-northeast (020°) at 6 knots	5 mi	1,200 ft	266 ft	06:53 UTC
BAF Westfield/Springfield, MA	138 nm out, 1 nm northwest of the line, tower	IFR Sky: overcast at 600 feet	from the north (010°) at 9 knots	10+ mi	600 ft	270 ft	06:53 UTC
POU Poughkeepsie, NY	198 nm out, 11 nm northwest of the line, tower	IFR Sky: overcast at 600 feet	from the north (360°) at 4 knots	10+ mi	600 ft	163 ft	06:53 UTC
MMU Morristown, NJ	247 nm out, 10 nm southeast of the line, tower	marginal VFR Sky: a broken layer at 1,100 feet, overcast at 1,900 feet	from the north (010°) at 5 knots	10+ mi	1,100 ft	186 ft	06:55 UTC
MTN Baltimore, MD	376 nm out, 11 nm southeast of the line, tower	IFR Sky: overcast at 900 feet Weather: rain	calm	5 mi	900 ft	22 ft	06:55 UTC
HEF Washington, DC	435 nm out, 5 nm southwest of the line, tower	IFR Sky: overcast at 900 feet	from the northwest (320°) at 7 knots	3 mi	900 ft	192 ft	06:56 UTC
CHO Charlottesville, VA	495 nm out, 4 nm northwest of the line, tower	VFR Sky: a few clouds at 3,400 feet, overcast at 6,000 feet	calm	10+ mi	6,000 ft	640 ft	06:53 UTC
LYH Lynchburg, VA	554 nm out, 5 nm southeast of the line, tower	VFR Sky: scattered clouds at 12,000 feet	from the south (180°) at 3 knots	10+ mi	none	938 ft	06:54 UTC
INT Winston Salem, NC	643 nm out, 20 nm southeast of the line, tower	VFR	from the west (260°) at 3 knots	10+ mi	none	969 ft	06:54 UTC
HKY Hickory, NC	692 nm out, 7 nm west of the line, tower	VFR	calm	10+ mi	none	1,189 ft	06:53 UTC
GSP Greer, SC	destination	VFR	from the west-southwest (250°) at 4 knots	10+ mi	none	963 ft	2:53 am EDT (06:53 UTC)

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, 9:49 am EDT (13:49 UTC)

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

The whole forecast for GSP

From Mon 2:00 am EDT (06:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, a few clouds at 5,000 feet
From Mon 8:00 am EDT (12:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, clear skies
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 Mon 9:00 pm EDT (01:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 25,000 feet

The forecast for PWM, the departure

From Mon 2:00 am EDT (06:00 UTC): wind from the north-northeast at 3 knots, visibility 4 miles, light rain, overcast at 2,500 feet
From Mon 7:00 am EDT (11:00 UTC): wind from the west-northwest at 3 knots, visibility 6 miles, mist, overcast at 1,500 feet
From Mon 10:30 am EDT (14:30 UTC): wind from the west-northwest at 7 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 10:00 pm EDT (02:00 UTC): wind from the north-northeast at 12 knots, gusting to 22, visibility 6 miles, mist, a broken layer at 2,500 feet

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

5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 23 nm from the route, 237 nm along the route · security · until 20 October · ZNY
6/8800 Baltimore, MD, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 6 nm from the route, 386 nm along the route · drones kept away from a public gathering · starts Saturday 17 October · ZDC
4/9383 WASHINGTON, DC., USA on the route, 415 nm along the route · security · ZDC
6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 2 nm from the route, 415 nm along the route · a VIP movement · today · ZDC

Daylight

Sunset at PWM 6:03 pm EDT (22:03 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

Radar now, the Northeast · loop National Weather Service

Radar now, the Southeast · 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: Portland International Jetport, Greenville Spartanburg International.