Patrick Leahy Burlington International to General Edward Lawrence Logan International BTV → BOS
157 nautical miles (181 statute miles) southeast on a straight line, true course 143°, about 158° magnetic at the departure end (variation 15W). At 120 knots that is 1 h 02 min at the quickest height in today's winds (39,000 ft, a 31-knot tailwind), arriving about 11:10 pm EDT (03:10 UTC), after sunset at the destination. Right now BTV is VFR, wind from the south (180°) at 8 knots; BOS is IFR, wind from the east-northeast (070°) at 13 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: 5 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 ZULU 1C: moderate icing up to 22,000 ft. Over the whole route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the whole route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 13,000 ft. Over the whole route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 20 to 98 nm out.
- 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 128 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 BTV.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- A333 at 15,000 ft, 32 nm northeast, 9:37 pm EDT (01:37 UTC): moderate chop turbulence up to 15,000 ft, remarks: during the climb. 128 nm along the route, 32 nm northeast of the line.
as filed, and in English
PSM UA /OV PSM/TM 0137/FL150/TP A333/TB MOD CHOP BLO 150/RM DURC
- Report
- a routine report filed through PSM
- Where
- over PSM
- Time
- 01:37 UTC
- Height
- at 15,000 ft
- Aircraft
- A333
- Turbulence
- moderate chop below 15,000 ft
- Remarks
- during the climb
- A321 at 5,000 ft, 21 nm southeast, 8:46 pm EDT (00:46 UTC): moderate turbulence from 5,000 ft to 15,000 ft. At the destination end, 21 nm southeast of the line.
as filed, and in English
BOS UA /OV BOS150020/TM 0046/FL050/TP A321/TB MOD 150-050
- Report
- a routine report filed through BOS
- Where
- 20 nm southeast (150°) of BOS
- Time
- 00:46 UTC
- Height
- at 5,000 ft
- Aircraft
- A321
- Turbulence
- moderate from 15,000 ft to 5,000 ft
- BCS3 at 18,000 ft, 41 nm south, 8:17 pm EDT (00:17 UTC): moderate chop turbulence, remarks: moderate CHOP180-210 smooth above 22,000 ft. At the destination end, 41 nm south of the line.
as filed, and in English
EWB UA /OV EWB/TM 0017/FL180/TP BCS3/TB MOD CHOP/RM MOD CHOP180-210 SMOOTH ABOVE FL220
- Report
- a routine report filed through EWB
- Where
- over EWB
- Time
- 00:17 UTC
- Height
- at 18,000 ft
- Aircraft
- BCS3
- Turbulence
- moderate chop
- Remarks
- moderate CHOP180-210 smooth above 22,000 ft
- BCS3 at 12,000 ft, 20 nm south, 8:11 pm EDT (00:11 UTC): moderate turbulence, rain, remarks: ssoxs dept from 12,000 ft to 16,000 ft. At the destination end, 20 nm south of the line.
as filed, and in English
BOS UA /OV BOS200020/TM 0011/FL120/TP BCS3/WX RA+/TB MOD/RM SSOXS DEPT 120-160
- Report
- a routine report filed through BOS
- Where
- 20 nm south (200°) of BOS
- Time
- 00:11 UTC
- Height
- at 12,000 ft
- Aircraft
- BCS3
- Weather
- ra+
- Turbulence
- moderate
- Remarks
- ssoxs dept from 12,000 ft to 16,000 ft
- E75S at 16,000 ft, 44 nm southwest, 7:35 pm EDT (23:35 UTC): moderate clear-air turbulence above 16,000 ft, remarks: moderate in +ra to light chop. At the destination end, 44 nm southwest of the line.
as filed, and in English
SFZ UA /OV PUT360003/TM 2335/FL160/TP E75S/TB MOD 160 CAT/RM MOD IN +RA TO LGT CHOP
- Report
- a routine report filed through SFZ
- Where
- 3 nm north (360°) of PUT
- Time
- 23:35 UTC
- Height
- at 16,000 ft
- Aircraft
- E75S
- Turbulence
- moderate at 16,000 ft clear-air turbulence
- Remarks
- moderate in +ra to light chop
- B767 at 36,000 ft, 14 nm east, 7:26 pm EDT (23:26 UTC): light to moderate turbulence. 10 nm along the route, 14 nm east of the line.
as filed, and in English
BTV UA /OV BTV100020/TM 2326/FL360/TP B767/TB LGT OCNL MOD
- Report
- a routine report filed through BTV
- Where
- 20 nm east (100°) of BTV
- Time
- 23:26 UTC
- Height
- at 36,000 ft
- Aircraft
- B767
- Turbulence
- light occasional moderate
- B787 at 37,000 ft, 43 nm northeast, 7:34 pm EDT (23:34 UTC): light to moderate turbulence. 20 nm along the route, 43 nm northeast of the line.
as filed, and in English
CDA UA /OV CDA/TM 2334/FL370/TP B787/TB LGT OCNL MOD
- Report
- a routine report filed through CDA
- Where
- over CDA
- Time
- 23:34 UTC
- Height
- at 37,000 ft
- Aircraft
- B787
- Turbulence
- light occasional moderate
- CRJ7 at 19,000 ft, 46 nm southwest, 8:28 pm EDT (00:28 UTC): no turbulence from 11,000 ft to 19,000 ft, remarks: during the climb. 30 nm along the route, 46 nm southwest of the line.
as filed, and in English
RUT UA /OV GFL010020/TM 0028/FL190/TP CRJ7/TB NEG 110-190/RM DURC
- Report
- a routine report filed through RUT
- Where
- 20 nm north (010°) of GFL
- Time
- 00:28 UTC
- Height
- at 19,000 ft
- Aircraft
- CRJ7
- Turbulence
- no from 11,000 ft to 19,000 ft
- Remarks
- during the climb
- BCS3 at 26,000 ft, 26 nm southwest, 8:35 pm EDT (00:35 UTC): light to moderate turbulence. 98 nm along the route, 26 nm southwest of the line.
as filed, and in English
EEN UA /OV EEN/TM 0035/FL260/TP BCS3/TB CONS LGT OCNL MOD
- Report
- a routine report filed through EEN
- Where
- over EEN
- Time
- 00:35 UTC
- Height
- at 26,000 ft
- Aircraft
- BCS3
- Turbulence
- continuous light occasional moderate
- E550 at 16,000 ft, 47 nm southwest, 7:43 pm EDT (23:43 UTC): light chop turbulence above 16,000 ft. 138 nm along the route, 47 nm southwest of the line.
as filed, and in English
SFZ UA /OV PUT330020/TM 2343/FL160/TP E550/TB OCNL LGT CHOP 160
- Report
- a routine report filed through SFZ
- Where
- 20 nm northwest (330°) of PUT
- Time
- 23:43 UTC
- Height
- at 16,000 ft
- Aircraft
- E550
- Turbulence
- occasional light chop at 16,000 ft
- E55P at 600 ft, 7 nm west, 8:48 pm EDT (00:48 UTC): overcast above 600 ft. 148 nm along the route, 7 nm west of the line.
as filed, and in English
BED UA /OV BED/TM 0048/FL006/TP E55P/SK OVC006
- Report
- a routine report filed through BED
- Where
- over BED
- Time
- 00:48 UTC
- Height
- at 600 ft
- Aircraft
- E55P
- Sky
- overcast from 600 ft
- E75S at 16,000 ft, 33 nm southwest, 8:07 pm EDT (00:07 UTC): light chop turbulence, remarks: moderate during the climb. 148 nm along the route, 33 nm southwest of the line.
as filed, and in English
SFZ UA /OV PUT030015/TM 0007/FL160/TP E75S/TB OCNL LGT CHOP 160 MOD CAT BLO 150/RM MOD DURC
- Report
- a routine report filed through SFZ
- Where
- 15 nm northeast (030°) of PUT
- Time
- 00:07 UTC
- Height
- at 16,000 ft
- Aircraft
- E75S
- Turbulence
- occasional light chop at 16,000 ft moderate clear-air turbulence below 15,000 ft
- Remarks
- moderate during the climb
- BCS3 at 600 ft, 2 nm northeast, 9:20 pm EDT (01:20 UTC): a broken layer above 600 ft, remarks: during the descent runway 22L bos. At the destination end, 2 nm northeast of the line.
as filed, and in English
BOS UA /OV KBOS040002/TM 0120/FL006/TP BCS3/SK BKN006/RM DURD RY 22L BOS
- Report
- a routine report filed through BOS
- Where
- 2 nm northeast (040°) of KBOS
- Time
- 01:20 UTC
- Height
- at 600 ft
- Aircraft
- BCS3
- Sky
- a broken layer from 600 ft
- Remarks
- during the descent runway 22L bos
- E75S at 12,000 ft, 41 nm south, 8:59 pm EDT (00:59 UTC): light turbulence, remarks: during the climb from 12,000 ft to 17,000 ft smooth above 18,000 ft. At the destination end, 41 nm south of the line.
as filed, and in English
EWB UA /OV EWB/TM 0059/FL120/TP E75S/TB LGT MOD/RM DURC 120-170 SMOOTH ABOVE 180
- Report
- a routine report filed through EWB
- Where
- over EWB
- Time
- 00:59 UTC
- Height
- at 12,000 ft
- Aircraft
- E75S
- Turbulence
- light moderate
- Remarks
- during the climb from 12,000 ft to 17,000 ft smooth above 18,000 ft
5 more routine reports are on the map.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 2 forecast points nearest it (BML, 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 | 190° at 19 kt | +12 kt | 108 kt | 1 h 27 min | 11:35 pm EDT (03:35 UTC) | |
| 5,500 ft | 200° at 19 kt | +11 kt | 109 kt | 1 h 26 min | 11:34 pm EDT (03:34 UTC) | |
| 7,500 ft | 220° at 15 kt | +3 kt | 7 °C | 117 kt | 1 h 21 min | 11:29 pm EDT (03:29 UTC) |
| 9,500 ft | 250° at 16 kt | −6 kt | 5 °C | 126 kt | 1 h 15 min | 11:23 pm EDT (03:23 UTC) |
| 11,500 ft | 260° at 24 kt | −12 kt | 2 °C | 132 kt | 1 h 11 min | 11:19 pm EDT (03:19 UTC) |
| 13,500 ft | 260° at 27 kt | −12 kt | -2 °C | 132 kt | 1 h 11 min | 11:19 pm EDT (03:19 UTC) |
| 15,500 ft | 260° at 29 kt | −11 kt | -5 °C | 131 kt | 1 h 12 min | 11:20 pm EDT (03:20 UTC) |
| 17,500 ft | 250° at 31 kt | −9 kt | -8 °C | 129 kt | 1 h 13 min | 11:21 pm EDT (03:21 UTC) |
| 18,000 ft FL180 | 250° at 31 kt | −9 kt | -10 °C | 129 kt | 1 h 13 min | 11:21 pm EDT (03:21 UTC) |
| 24,000 ft FL240 | 250° at 46 kt | −14 kt | -18 °C | 134 kt | 1 h 10 min | 11:18 pm EDT (03:18 UTC) |
| 30,000 ft FL300 | 250° at 64 kt | −15 kt | -34 °C | 135 kt | 1 h 10 min | 11:18 pm EDT (03:18 UTC) |
| 34,000 ft FL340 | 250° at 79 kt | −23 kt | -44 °C | 143 kt | 1 h 06 min | 11:14 pm EDT (03:14 UTC) |
| 39,000 ft FL390 | 250° at 107 kt | −31 kt | -55 °C | 151 kt | 1 h 02 min | 11:10 pm EDT (03:10 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BML | used from 0 nm out; 75 nm from the line | 220/19 | 210/17 9° | 240/12 4° | 270/22 1° | 250/21 -11° | 260/41 -19° | 250/68 -34° | 250/82 -44° | 250/115 -55° |
| BOS | used from 98 nm out; 34 nm from the line | 160/27 | 190/23 9° | 260/20 7° | 260/32 1° | 250/48 -7° | 240/56 -17° | 240/59 -33° | 250/75 -43° | 250/94 -55° |
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 |
|---|---|---|---|---|---|---|---|
| BTV Burlington, VT | departure | VFR Sky: overcast at 4,500 feet Weather: light rain | from the south (180°) at 8 knots | 10+ mi | 4,500 ft | 334 ft | 9:54 pm EDT (01:54 UTC) |
| MPV Barre/Montpelier, VT | 30 nm out, 11 nm northeast of the line | VFR Sky: overcast at 4,400 feet Weather: light rain | from the south-southwest (200°) at 5 knots | 10+ mi | 4,400 ft | 1,165 ft | 01:51 UTC |
| LEB Lebanon, NH | 59 nm out, 4 nm south of the line, tower | marginal VFR Sky: a few clouds at 700 feet, overcast at 1,500 feet Weather: light rain, mist | calm | 6 mi | 1,500 ft | 603 ft | 02:02 UTC |
| ASH Nashua, NH | 128 nm out, 5 nm west of the line, tower | low IFR Sky: a broken layer at 400 feet, overcast at 800 feet Weather: rain | calm | 7 mi | 400 ft | 200 ft | 01:56 UTC |
| BOS Boston, MA | destination | IFR Sky: a broken layer at 900 feet, a broken layer at 1,300 feet, overcast at 3,400 feet Weather: rain, mist | from the east-northeast (070°) at 13 knots | 4 mi | 900 ft | 19 ft | 9:54 pm EDT (01:54 UTC) |
The highest airport on this list sits at 1,165 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, 11:10 pm EDT (03:10 UTC)
Wind from the east at 6 knots, visibility 2 miles, light rain, mist, overcast at 800 feet IFR
The whole forecast for BOS
- From Sun 8:00 pm EDT (00:00 UTC): wind from the southeast at 4 knots, visibility 4 miles, heavy rain, mist, scattered clouds at 2,200 feet, a broken layer at 2,800 feet and more above
- From Sun 10:00 pm EDT (02:00 UTC): wind from the east-southeast at 5 knots, visibility 3 miles, light rain, mist, overcast at 1,000 feet
- From Sun 11:00 pm EDT (03:00 UTC): wind from the east at 6 knots, visibility 2 miles, light rain, mist, overcast at 800 feet
- From Mon 2:00 am EDT (06:00 UTC): wind from the northeast at 8 knots, visibility 2 miles, light rain showers, mist, overcast at 300 feet
- From Mon 9:00 am EDT (13:00 UTC): wind from the north at 7 knots, visibility 3 miles, mist, a broken layer at 800 feet
- From Mon 1:00 pm EDT (17:00 UTC): wind from the north-northwest at 5 knots, visibility more than 6 miles, scattered clouds at 15,000 feet
- From Mon 11:00 pm EDT (03:00 UTC): wind from the north-northeast at 5 knots, visibility more than 6 miles, scattered clouds at 4,500 feet
The forecast for BTV, the departure
- From Sun 8:00 pm EDT (00:00 UTC): wind from the south at 8 knots, gusting to 16, visibility more than 6 miles, overcast at 6,000 feet
- 30% chance between Sun 8:00 pm EDT (00:00 UTC) and 12:00 am EDT (04:00 UTC): visibility 5 miles, light rain, mist, overcast at 3,500 feet
- From Mon 12:00 am EDT (04:00 UTC): wind from the south at 7 knots, visibility more than 6 miles, overcast at 3,500 feet
- 30% chance between Mon 12:00 am EDT (04:00 UTC) and 2:00 am EDT (06:00 UTC): visibility 5 miles, light rain, mist
- From Mon 5:00 am EDT (09:00 UTC): wind light and variable, visibility more than 6 miles, overcast at 1,500 feet
- From Mon 8:00 am EDT (12:00 UTC): wind light and variable, visibility more than 6 miles, a broken layer at 4,000 feet
- From Mon 2:00 pm EDT (18:00 UTC): wind from the north at 6 knots, visibility more than 6 miles, a broken layer at 2,500 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8802 Foxborough, MA, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 19 nm from the route, at the destination end · drones kept away from a public gathering · starts Saturday 17 October · ZBW
Daylight
Sunset at BTV 6:13 pm EDT (22:13 UTC), at BOS 6:07 pm EDT (22:07 UTC) (civil twilight ends 6:35 pm EDT (22:35 UTC)). At 120 knots the arrival at BOS is before sunrise there (6:53 am EDT (10:53 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: Patrick Leahy Burlington International, General Edward Lawrence Logan International.