Plan a flight · Mon 12:45 am CDT (05:45 UTC)

St. Louis Lambert International to Philadelphia International STL → PHL

705 nautical miles (812 statute miles) east on a straight line, true course 080°, about 081° magnetic at the departure end (variation 1W). At 120 knots that is 4 h 31 min at the quickest height in today's winds (34,000 ft, a 36-knot tailwind), arriving about 6:16 am EDT (10:16 UTC), after sunset at the destination. Right now STL is VFR, wind from the south (180°) at 8 knots; PHL is marginal VFR, wind from the northeast (050°) at 11 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: 3,172 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

SIGMET E19E: thunderstorms (a convective SIGMET) up to 43,000 ft, moving from the southwest at 20 knots, until 1:55 am CDT (06:55 UTC). Over the last 219 nm of the route.

as issued

WSUS31 KKCI 120455
MKCE WST 120455
CONVECTIVE SIGMET 19E
VALID UNTIL 0655Z
CT NY NJ PA DE MD VA DC WV AND DE NJ NY MD CT VA CSTL WTRS
FROM 20NNW HTO-70SSE HTO-90SE SIE-20WNW LYH-40ESE AIR-20NNW HTO
AREA EMBD TS MOV FROM 24020KT. TOPS TO FL430.

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 last 566 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 437 to 606 nm out.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 169 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 STL.

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

B38M at 20,000 ft, 46 nm south, 10:11 pm CDT (03:11 UTC): moderate clear-air turbulence from 20,000 ft to 25,000 ft. 586 nm along the route, 46 nm south of the line.
as filed, and in English
```
IAD UA /OV AML300020/TM 0311/FL200/TP B38M/TB MOD CAT 200-250
```
Report
a routine report filed through IAD
Where
20 nm northwest (300°) of AML
Time
03:11 UTC
Height
at 20,000 ft
Aircraft
B38M
Turbulence
moderate clear-air turbulence from 20,000 ft to 25,000 ft
A319 at 23,000 ft, 34 nm east, 10:21 pm CDT (03:21 UTC): moderate turbulence. At the destination end, 34 nm east of the line.
as filed, and in English
```
MJX UA /OV CYN345010/TM 0321/FL230/TP A319/TB MOD
```
Report
a routine report filed through MJX
Where
10 nm north (345°) of CYN
Time
03:21 UTC
Height
at 23,000 ft
Aircraft
A319
Turbulence
moderate
MD83 climbing, 16 nm north, 12:04 am CDT (05:04 UTC): a routine report with nothing remarked on. 348 nm along the route, 16 nm north of the line.
as filed, and in English
```
CMH UA /OV LCK/TM 0504/FLDURC/TP MD83/SK B010 T037
```
Report
a routine report filed through CMH
Where
over LCK
Time
05:04 UTC
Height
during the climb
Aircraft
MD83
Sky
B010 T037
E75S at 22,000 ft, 32 nm north, 9:51 pm CDT (02:51 UTC): light to moderate turbulence, remarks: zob. 536 nm along the route, 32 nm north of the line.
as filed, and in English
```
JST UA /OV JST/TM 0251/FL220/TP E75S/TB LGHT-MOD/RM ZOB
```
Report
a routine report filed through JST
Where
over JST
Time
02:51 UTC
Height
at 22,000 ft
Aircraft
E75S
Turbulence
lght-mod
Remarks
zob
E145 at 600 ft, 21 nm north, 10:20 pm CDT (03:20 UTC): overcast above 600 ft. 636 nm along the route, 21 nm north of the line.
as filed, and in English
```
MDT UA /OV MDT/TM 0320/FL006/TP E145/SK OVC 006
```
Report
a routine report filed through MDT
Where
over MDT
Time
03:20 UTC
Height
at 600 ft
Aircraft
E145
Sky
overcast from 600 ft
B712 descending, 41 nm south, 10:10 pm CDT (03:10 UTC): remarks: light rain light chop bases 50,000 ft ft. 636 nm along the route, 41 nm south of the line.
as filed, and in English
```
BWI UA /OV RWY 15R/TM 0310/FLDURD/TP B712/RM LIGHT RAIN. LIGHT CHOP. BASES 500 FT
```
Report
a routine report filed through BWI
Where
runway 15R
Time
03:10 UTC
Height
during the descent
Aircraft
B712
Remarks
light rain light chop bases 50,000 ft ft

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 eastbound cruising heights for this course (VFR: odd 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 (STL, SPI, EVV, IND, CVG, CMH, AGC, PSB, ACY). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
3,500 ft	300° at 12 kt	−11 kt		131 kt	5 h 23 min	7:08 am EDT (11:08 UTC)
5,500 ft	310° at 14 kt	−9 kt	13 °C	129 kt	5 h 28 min	7:13 am EDT (11:13 UTC)
7,500 ft	310° at 16 kt	−10 kt	12 °C	130 kt	5 h 25 min	7:10 am EDT (11:10 UTC)
9,500 ft	310° at 16 kt	−10 kt	8 °C	130 kt	5 h 25 min	7:10 am EDT (11:10 UTC)
11,500 ft	310° at 14 kt	−9 kt	5 °C	129 kt	5 h 28 min	7:13 am EDT (11:13 UTC)
13,500 ft	310° at 15 kt	−10 kt	1 °C	130 kt	5 h 25 min	7:10 am EDT (11:10 UTC)
15,500 ft	310° at 17 kt	−12 kt	-3 °C	132 kt	5 h 20 min	7:05 am EDT (11:05 UTC)
17,500 ft	310° at 19 kt	−14 kt	-7 °C	134 kt	5 h 16 min	7:01 am EDT (11:01 UTC)
18,000 ft FL180	310° at 20 kt	−14 kt	-8 °C	134 kt	5 h 16 min	7:01 am EDT (11:01 UTC)
24,000 ft FL240	310° at 27 kt	−18 kt	-20 °C	138 kt	5 h 07 min	6:52 am EDT (10:52 UTC)
30,000 ft FL300	310° at 34 kt	−22 kt	-35 °C	142 kt	4 h 58 min	6:43 am EDT (10:43 UTC)
34,000 ft FL340	300° at 47 kt	−36 kt	-41 °C	156 kt	4 h 31 min	6:16 am EDT (10:16 UTC)
39,000 ft FL390	300° at 42 kt	−33 kt	-49 °C	153 kt	4 h 36 min	6:21 am EDT (10:21 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
STL	used from 0 nm out; 25 nm from the line	250/24	250/24 16°	260/23 9°	270/16 6°	260/25 -6°	270/29 -19°	290/34 -33°	290/48 -41°	290/54 -51°
SPI	used from 50 nm out; 67 nm from the line	220/21	250/23 16°	260/27 9°	270/14 6°	270/23 -7°	270/31 -19°	270/28 -33°	290/48 -42°	300/55 -52°
EVV	used from 99 nm out; 64 nm from the line	280/15	290/12 17°	310/16 10°	320/13 5°	310/22 -6°	320/26 -18°	320/38 -33°	310/56 -41°	320/55 -51°
IND	used from 149 nm out; 36 nm from the line	290/16	310/20 16°	320/21 10°	330/13 3°	300/25 -7°	320/32 -19°	330/46 -34°	320/61 -43°	320/63 -50°
CVG	used from 248 nm out; 22 nm from the line	320/18	350/32 16°	350/35 10°	350/30 3°	330/30 -7°	340/44 -20°	340/58 -35°	330/72 -41°	320/36 -49°
CMH	used from 298 nm out; 41 nm from the line	330/15	340/22 14°	340/24 9°	340/23 4°	340/35 -9°	340/49 -20°	340/58 -37°	330/70 -42°	340/55 -47°
AGC	used from 447 nm out; 42 nm from the line	350/14	330/20 11°	340/18 8°	330/17 3°	340/22 -11°	340/31 -22°	330/33 -36°	300/34 -41°	300/35 -47°
PSB	used from 546 nm out; 65 nm from the line		360/13 13°	330/14 7°	300/11 3°	290/12 -11°	240/23 -23°	270/25 -36°	250/34 -40°	250/45 -48°
ACY	used from 646 nm out; 70 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°

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
STL St Louis, MO	departure	VFR Sky: a few clouds at 25,000 feet	from the south (180°) at 8 knots	10+ mi	none	617 ft	11:51 pm CDT (04:51 UTC)
ALN Alton/St Louis, IL	20 nm out, 7 nm northwest of the line, tower	VFR	from the south (180°) at 6 knots	10+ mi	none	543 ft	05:35 UTC
SIV Sullivan, IN	139 nm out, 1 nm southwest of the line	no report just now				539 ft
BAK Columbus, IN	209 nm out, 3 nm southeast of the line, tower	VFR	calm	10+ mi	none	656 ft	01:45 UTC
LUK Cincinnati, OH	278 nm out, 20 nm south of the line, tower	low IFR Sky: a few clouds at 200 feet, a broken layer at 2,500 feet Weather: fog	from the south-southwest (210°) at 4 knots	0.25 mi	2,500 ft	481 ft	05:38 UTC
ILN Wilmington, OH	308 nm out, 4 nm southeast of the line, tower	marginal VFR Sky: overcast at 1,100 feet	from the west-northwest (300°) at 5 knots	10+ mi	1,100 ft	1,076 ft	05:40 UTC
PKB Parkersburg, WV	417 nm out, 18 nm south of the line, tower	marginal VFR Sky: overcast at 1,100 feet	from the west-northwest (290°) at 4 knots	10+ mi	1,100 ft	858 ft	05:26 UTC
MGW Morgantown, WV	487 nm out, 6 nm southeast of the line, tower	IFR Sky: a broken layer at 700 feet, overcast at 1,000 feet	from the west-northwest (300°) at 3 knots	10+ mi	700 ft	1,243 ft	04:53 UTC
CBE Cumberland, MD	546 nm out, 11 nm south of the line	VFR Sky: scattered clouds at 3,400 feet, overcast at 4,100 feet	from the north (350°) at 3 knots	10+ mi	4,100 ft	757 ft	05:35 UTC
HGR Hagerstown, MD	586 nm out, 8 nm southeast of the line, tower	IFR Sky: overcast at 600 feet Weather: mist	from the north-northwest (340°) at 6 knots	6 mi	600 ft	703 ft	04:53 UTC
ILG Wilmington, DE	685 nm out, 12 nm south of the line, tower	IFR Sky: overcast at 700 feet	from the north-northeast (030°) at 13 knots, gusting to 19	9 mi	700 ft	79 ft	04:51 UTC
PHL Philadelphia, PA	destination	marginal VFR Sky: scattered clouds at 600 feet, overcast at 1,000 feet Weather: mist	from the northeast (050°) at 11 knots	5 mi	1,000 ft	35 ft	1:11 am EDT (05:11 UTC)

The highest airport on this list sits at 1,243 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At PHL when you get there the forecast at the estimated arrival, 6:16 am EDT (10:16 UTC)

Wind from the north-northeast at 8 knots, visibility 5 miles, light rain showers, mist, thunderstorms nearby, overcast at 700 feet (thunderheads) IFR

The whole forecast for PHL

From Mon 2:00 am EDT (06:00 UTC): wind from the north-northeast at 8 knots, visibility 5 miles, light rain showers, mist, thunderstorms nearby, overcast at 700 feet (thunderheads)
From Mon 7:00 am EDT (11:00 UTC): wind from the north at 10 knots, visibility 5 miles, mist, overcast at 800 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the north at 10 knots, gusting to 15, visibility 6 miles, mist, a broken layer at 2,500 feet
From Mon 12:00 pm EDT (16:00 UTC): wind from the north-northwest at 10 knots, gusting to 15, visibility more than 6 miles, scattered clouds at 5,000 feet
From Mon 6:00 pm EDT (22:00 UTC): wind from the northwest at 8 knots, visibility more than 6 miles, scattered 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 STL, the departure

From Mon 1:00 am CDT (06:00 UTC): wind from the south-southwest at 7 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 11:00 am CDT (16:00 UTC): wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 6:00 pm CDT (23:00 UTC): wind from the southwest at 8 knots, visibility more than 6 miles, a few clouds at 25,000 feet

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

6/8029 Cincinnati, OH, Friday, October 9, 2026 through Monday, October 12, 2026 Local 17 nm from the route, 268 nm along the route · a VIP movement · until 12 October · ZID

Daylight

Sunset at STL 6:27 pm CDT (23:27 UTC), at PHL 6:26 pm EDT (22:26 UTC) (civil twilight ends 6:53 pm EDT (22:53 UTC)). At 120 knots the arrival at PHL is before sunrise there (7:07 am EDT (11:07 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 upper Mississippi valley · loop National Weather Service

Radar now, the central Great Lakes · loop National Weather Service

Radar now, the Northeast · 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: St. Louis Lambert International, Philadelphia International.