Plan a flight · Mon 6:00 am CDT (11:00 UTC)

St. Louis Lambert International to General Edward Lawrence Logan International STL → BOS

907 nautical miles (1,044 statute miles) east on a straight line, true course 070°, about 071° magnetic at the departure end (variation 1W). At 120 knots that is 6 h at the quickest height in today's winds (39,000 ft, a 31-knot tailwind), arriving about 1:00 pm EDT (17:00 UTC). Right now STL is VFR, wind from the south-southwest (210°) at 7 knots; BOS is IFR, wind from the north (360°) at 7 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: 3,168 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 last 718 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 509 to 788 nm out.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the last 209 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

BCS3 at 10,000 ft, 1 nm southeast, 5:15 am CDT (10:15 UTC): moderate turbulence from 7,000 ft to 9,000 ft, remarks: during the climb ssoxs aid. At the destination end, 1 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS/TM 1015/FL100/TP BCS3/TB MOD 070-090/RM DURC SSOXS AID
```
Report
a routine report filed through BOS
Where
over BOS
Time
10:15 UTC
Height
at 10,000 ft
Aircraft
BCS3
Turbulence
moderate from 7,000 ft to 9,000 ft
Remarks
during the climb ssoxs aid
A321 at 9,500 ft, 9 nm northwest, 4:05 am CDT (09:05 UTC): moderate turbulence, remarks: moderate turbulence during the descent jfund arrival from from 9,500 ft to 7,000 ft, smooth below. At the destination end, 9 nm northwest of the line.
as filed, and in English
```
BOS UA /OV BOS350010/TM 0905/FL095/TP A321/TB MOD/RM MOD TB DURD JFUND ARR FROM 095-070, SMOOTH BELOW
```
Report
a routine report filed through BOS
Where
10 nm north (350°) of BOS
Time
09:05 UTC
Height
at 9,500 ft
Aircraft
A321
Turbulence
moderate
Remarks
moderate turbulence during the descent jfund arrival from from 9,500 ft to 7,000 ft, smooth below
CRJ7 at 3,000 ft, 23 nm southeast, 5:08 am CDT (10:08 UTC): a routine report with nothing remarked on. 289 nm along the route, 23 nm southeast of the line.
as filed, and in English
```
CMH UA /OV DAY/TM 1008/FL030/TP CRJ7/SK TOP015
```
Report
a routine report filed through CMH
Where
over DAY
Time
10:08 UTC
Height
at 3,000 ft
Aircraft
CRJ7
Sky
TOP015
A21N at 33,000 ft, 3 nm south, 3:07 am CDT (08:07 UTC): light chop turbulence. 309 nm along the route, 3 nm south of the line.
as filed, and in English
```
DAY UA /OV ROD/TM 0807/FL330/TP A21N/TB OCNL LT CHOP
```
Report
a routine report filed through DAY
Where
over ROD
Time
08:07 UTC
Height
at 33,000 ft
Aircraft
A21N
Turbulence
occasional lt chop
E170 at 6,000 ft, 34 nm southeast, 5:00 am CDT (10:00 UTC): remarks: during the climb. 349 nm along the route, 34 nm southeast of the line.
as filed, and in English
```
CMH UA /OV CMH/TM 1000/FL060/TP E170/SK B008-TOP031/RM DURC
```
Report
a routine report filed through CMH
Where
over CMH
Time
10:00 UTC
Height
at 6,000 ft
Aircraft
E170
Sky
B008-TOP031
Remarks
during the climb
B737 at 39,000 ft, 28 nm south, 3:40 am CDT (08:40 UTC): light chop turbulence. 369 nm along the route, 28 nm south of the line.
as filed, and in English
```
CMH UA /OV APE/TM 0840/FL390/TP B737/TB CONS LGT CHOP 390 NEG 350-330
```
Report
a routine report filed through CMH
Where
over APE
Time
08:40 UTC
Height
at 39,000 ft
Aircraft
B737
Turbulence
continuous light chop at 39,000 ft no from 35,000 ft to 33,000 ft
E75L at 21,000 ft, 49 nm south, 5:23 am CDT (10:23 UTC): clear from 21,000 ft to 60,000 ft. 399 nm along the route, 49 nm south of the line.
as filed, and in English
```
ZZV UA /OV ZZV/TM 1023/FL210/TP E75L/SK SKC
```
Report
a routine report filed through ZZV
Where
over ZZV
Time
10:23 UTC
Height
at 21,000 ft
Aircraft
E75L
Sky
clear
A21N descending, 33 nm north, 5:11 am CDT (10:11 UTC): no turbulence, 12 °C. 419 nm along the route, 33 nm north of the line.
as filed, and in English
```
CLE UA /OV CLE230005/TM 1011/FLDURD/TP A21N/SK B018 T035/TA +12/TB SMOOTH
```
Report
a routine report filed through CLE
Where
5 nm southwest (230°) of CLE
Time
10:11 UTC
Height
during the descent
Aircraft
A21N
Sky
B018 T035
Temperature
+12
Turbulence
smooth
GL7T at 1,500 ft, 46 nm south, 4:02 am CDT (09:02 UTC): a routine report with nothing remarked on. 489 nm along the route, 46 nm south of the line.
as filed, and in English
```
AGC UA /OV KAGC/TM 0902/FL015/TP GL7T/SK B015
```
Report
a routine report filed through AGC
Where
over KAGC
Time
09:02 UTC
Height
at 1,500 ft
Aircraft
GL7T
Sky
B015
NMRS at 31,000 ft, 48 nm south, 5:42 am CDT (10:42 UTC): light to moderate turbulence from 29,000 ft to 33,000 ft, remarks: zob. 509 nm along the route, 48 nm south of the line.
as filed, and in English
```
PIT UA /OV PIT-JST/TM 1042/FL310/TP NMRS/TB CONS LGT OCNL MOD 290-330/RM ZOB
```
Report
a routine report filed through PIT
Where
between PIT and JST
Time
10:42 UTC
Height
at 31,000 ft
Aircraft
NMRS
Turbulence
continuous light occasional moderate from 29,000 ft to 33,000 ft
Remarks
zob
C208 at 2,700 ft, 25 nm north, 5:01 am CDT (10:01 UTC): remarks: zob. 568 nm along the route, 25 nm north of the line.
as filed, and in English
```
BFD UA /OV BFD/TM 1001/FL027/TP C208/SK BASE027 TOP043/RM ZOB
```
Report
a routine report filed through BFD
Where
over BFD
Time
10:01 UTC
Height
at 2,700 ft
Aircraft
C208
Sky
BASE027 TOP043
Remarks
zob
B737 at 800 ft, 15 nm south, 4:58 am CDT (09:58 UTC): a broken layer above 800 ft, remarks: during the descent runway 6. 828 nm along the route, 15 nm south of the line.
as filed, and in English
```
BDL UA /OV BDL/TM 0958/FL008/TP B737/SK BKN008/RM DURD RY6
```
Report
a routine report filed through BDL
Where
over BDL
Time
09:58 UTC
Height
at 800 ft
Aircraft
B737
Sky
a broken layer from 800 ft
Remarks
during the descent runway 6
B738 at 2,000 ft, 15 nm south, 5:44 am CDT (10:44 UTC): a routine report with nothing remarked on. 838 nm along the route, 15 nm south of the line.
as filed, and in English
```
BDL UA /OV KBDL095005/TM 1044/FL020/TP B738/SK BASES 005 TOPS 019
```
Report
a routine report filed through BDL
Where
5 nm east (095°) of KBDL
Time
10:44 UTC
Height
at 2,000 ft
Aircraft
B738
Sky
bases 500 ft tops 1,900 ft
MULT at 2,000 ft, 22 nm north, 5:18 am CDT (10:18 UTC): light turbulence from 1,500 ft to 2,000 ft, remarks: during the climb out of KBOS. At the destination end, 22 nm north of the line.
as filed, and in English
```
LWM UA /OV LWM/TM 1018/FL020/TP MULT/TB CONS LGT 020-015/RM DURC OUT OF KBOS
```
Report
a routine report filed through LWM
Where
over LWM
Time
10:18 UTC
Height
at 2,000 ft
Aircraft
MULT
Turbulence
continuous light from 2,000 ft to 1,500 ft
Remarks
during the climb out of KBOS

2 more routine reports are on the map.

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 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 12 forecast points nearest it (STL, SPI, IND, FWA, CMH, CLE, AGC, PSB, AVP, ALB, BDL, BOS). 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	310° at 12 kt	−7 kt		127 kt	7 h 09 min	2:09 pm EDT (18:09 UTC)
5,500 ft	330° at 14 kt	−3 kt	12 °C	123 kt	7 h 22 min	2:22 pm EDT (18:22 UTC)
7,500 ft	330° at 15 kt	−4 kt	11 °C	124 kt	7 h 19 min	2:19 pm EDT (18:19 UTC)
9,500 ft	330° at 15 kt	−6 kt	7 °C	126 kt	7 h 12 min	2:12 pm EDT (18:12 UTC)
11,500 ft	320° at 18 kt	−9 kt	4 °C	129 kt	7 h 02 min	2:02 pm EDT (18:02 UTC)
13,500 ft	310° at 20 kt	−11 kt	0 °C	131 kt	6 h 55 min	1:55 pm EDT (17:55 UTC)
15,500 ft	310° at 23 kt	−13 kt	-4 °C	133 kt	6 h 49 min	1:49 pm EDT (17:49 UTC)
17,500 ft	310° at 26 kt	−15 kt	-7 °C	135 kt	6 h 43 min	1:43 pm EDT (17:43 UTC)
18,000 ft FL180	310° at 26 kt	−15 kt	-8 °C	135 kt	6 h 43 min	1:43 pm EDT (17:43 UTC)
24,000 ft FL240	310° at 29 kt	−18 kt	-21 °C	138 kt	6 h 34 min	1:34 pm EDT (17:34 UTC)
30,000 ft FL300	310° at 34 kt	−21 kt	-36 °C	141 kt	6 h 26 min	1:26 pm EDT (17:26 UTC)
34,000 ft FL340	300° at 46 kt	−30 kt	-43 °C	150 kt	6 h 03 min	1:03 pm EDT (17:03 UTC)
39,000 ft FL390	300° at 46 kt	−31 kt	-51 °C	151 kt	6 h	1:00 pm EDT (17:00 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
STL	used from 0 nm out; 25 nm from the line	250/26	240/21 15°	240/22 11°	250/23 6°	270/28 -7°	260/30 -19°	280/52 -31°	280/57 -40°	300/57 -49°
SPI	used from 50 nm out; 56 nm from the line	260/28	250/22 15°	250/14 9°	260/20 6°	280/27 -7°	280/34 -19°	280/48 -32°	280/59 -41°	300/60 -49°
IND	used from 100 nm out; 74 nm from the line	270/22	290/19 15°	270/19 8°	270/18 4°	290/28 -7°	280/35 -20°	270/37 -34°	300/51 -42°	300/61 -51°
FWA	used from 249 nm out; 52 nm from the line	270/20	300/16 15°	290/14 10°	280/17 3°	290/25 -7°	280/30 -19°	280/34 -35°	290/48 -44°	300/64 -52°
CMH	used from 299 nm out; 45 nm from the line	320/12	340/26 15°	340/22 9°	320/24 3°	320/32 -7°	320/36 -20°	330/42 -35°	320/59 -44°	320/57 -50°
CLE	used from 399 nm out; 36 nm from the line	310/7	350/20 14°	340/16 9°	320/21 2°	320/32 -8°	330/34 -20°	330/45 -36°	320/60 -45°	320/64 -51°
AGC	used from 449 nm out; 49 nm from the line	340/11	350/12 11°	360/25 7°	340/30 2°	340/41 -8°	340/44 -21°	350/59 -36°	340/68 -42°	340/50 -51°
PSB	used from 548 nm out; 34 nm from the line		020/21 12°	360/28 7°	360/29 1°	350/33 -10°	350/42 -22°	350/49 -37°	340/63 -43°	350/39 -52°
AVP	used from 648 nm out; 32 nm from the line	010/20	020/24 11°	360/19 8°	350/23 2°	320/24 -11°	330/25 -22°	330/27 -37°	310/28 -42°	290/30 -50°
ALB	used from 748 nm out; 44 nm from the line	340/22	340/19 9°	320/16 7°	330/16 2°	330/19 -11°	320/21 -23°	320/25 -39°	280/30 -44°	270/41 -51°
BDL	used from 798 nm out; 17 nm from the line	020/15	010/19 10°	340/10 7°	300/17 3°	280/23 -10°	250/35 -22°	250/44 -38°	250/55 -42°	250/57 -51°
BOS	used from 848 nm out; 35 nm from the line	020/10	360/20 10°	340/19 7°	290/21 2°	270/35 -9°	260/42 -22°	250/55 -38°	240/75 -43°	250/72 -51°

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-southwest (210°) at 7 knots	10+ mi	none	617 ft	5:51 am CDT (10:51 UTC)
ALN Alton/St Louis, IL	20 nm out, 4 nm northwest of the line, tower	VFR	calm	10+ mi	none	543 ft	10:35 UTC
HUF Terre Haute, IN	150 nm out, 7 nm south of the line, tower	VFR	calm	10+ mi	none	589 ft	10:53 UTC
IND Indianapolis, IN	199 nm out, 6 nm south of the line, tower	VFR Sky: a few clouds at 4,000 feet	from the south (170°) at 4 knots	10+ mi	none	796 ft	10:54 UTC
DAY Dayton, OH	289 nm out, 23 nm southeast of the line, tower	low IFR Sky: sky obscured at 200 feet Weather: fog	from the south-southwest (210°) at 5 knots	0.25 mi	200 ft	1,009 ft	10:56 UTC
CAK Akron, OH	429 nm out, 4 nm northeast of the line, tower	IFR Sky: a broken layer at 500 feet, overcast at 1,500 feet Weather: light drizzle	from the northwest (310°) at 5 knots	8 mi	500 ft	1,225 ft	10:51 UTC
YNG Youngstown/Warren, OH	469 nm out, 15 nm north of the line, tower	marginal VFR Sky: a few clouds at 400 feet, overcast at 1,500 feet	from the west-northwest (290°) at 3 knots	8 mi	1,500 ft	1,191 ft	10:51 UTC
OYM St Marys, PA	568 nm out, 1 nm northwest of the line	no report just now				1,934 ft
IPT Williamsport, PA	638 nm out, 24 nm south of the line, tower	marginal VFR Sky: overcast at 1,800 feet	from the west (270°) at 8 knots	10+ mi	1,800 ft	528 ft	10:54 UTC
GBR Great Barrington, MA	798 nm out, 5 nm northeast of the line	no report just now				739 ft
CEF Springfield/Chicopee, MA	838 nm out, 1 nm southeast of the line, tower	marginal VFR Sky: scattered clouds at 700 feet, overcast at 1,100 feet	from the north-northwest (340°) at 3 knots	10+ mi	1,100 ft	241 ft	10:11 UTC
BOS Boston, MA	destination	IFR Sky: overcast at 700 feet	from the north (360°) at 7 knots	10+ mi	700 ft	19 ft	6:54 am EDT (10:54 UTC)

The highest airport on this list sits at 1,934 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At BOS when you get there the forecast at the estimated arrival, 1:00 pm EDT (17:00 UTC)

Wind from the north at 8 knots, visibility more than 6 miles, scattered clouds at 15,000 feet VFR

The whole forecast for BOS

From Mon 4:00 am EDT (08:00 UTC): wind from the north-northeast at 12 knots, visibility 6 miles, mist, overcast at 800 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the north at 8 knots, visibility more than 6 miles, scattered clouds at 15,000 feet
From Mon 3:00 pm EDT (19:00 UTC): wind from the northwest at 7 knots, visibility more than 6 miles, scattered clouds at 15,000 feet
From Mon 11:00 pm EDT (03:00 UTC): wind from the northeast at 10 knots, visibility more than 6 miles, scattered clouds at 4,500 feet

The forecast for STL, the departure

From Mon 4:00 am CDT (09:00 UTC): wind from the 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 south-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

6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, 439 nm along the route · a VIP movement · today · ZOB
6/8888 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 13 nm from the route, 469 nm along the route · security · today · ZOB
6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, 469 nm along the route · a VIP movement · today · ZOB
6/7153 North Sicuate, RI, Saturday, October 10, 2026 through Monday, October 12, 2026 UTC 24 nm from the route, at the destination end · drones kept away from a public gathering · until 12 October · ZBW
6/8802 Foxborough, MA, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 14 nm from the route, at the destination end · drones kept away from a public gathering · starts Saturday 17 October · ZBW

Daylight

Sunset at STL 6:27 pm CDT (23:27 UTC), at BOS 6:07 pm EDT (22:07 UTC) (civil twilight ends 6:35 pm EDT (22:35 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, General Edward Lawrence Logan International.