Plan a flight · Mon 12:42 am MDT (06:42 UTC)

Denver International to General Edward Lawrence Logan International DEN → BOS

1,520 nautical miles (1,750 statute miles) east on a straight line, true course 073°, about 065° magnetic at the departure end (variation 8E). At 120 knots that is 8 h 56 min at the quickest height in today's winds (39,000 ft, a 50-knot tailwind), arriving about 11:38 am EDT (15:38 UTC). Right now DEN is VFR, wind from the southwest (220°) at 21 knots, gusting to 29; BOS is marginal VFR, wind from the north (010°) at 10 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: 7,628 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 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the first 109 nm of the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 70 nm of the route.
AIRMET TANGO 3W: 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 89 to 666 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 686 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 298 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1232 to 1431 nm out.
AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the route from 1391 to 1471 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 10,000 ft. Over the last 79 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 DEN.

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

UAL330 at 35,000 ft, 32 nm north, 10:30 pm MDT (04:30 UTC): moderate turbulence, wind 235° at 92 knots. At the destination end, 32 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
UAL932 at 35,000 ft, 50 nm east, 10:34 pm MDT (04:34 UTC): moderate turbulence, wind 240° at 69 knots. At the destination end, 50 nm east of the line.
as filed, and in English
```
ARP UAL932 4206N 06957W 0434 F350 240/069KT TB MOD TURB IC
```
Report
a routine report filed through ARP
UAL932 at 35,000 ft, 47 nm east, 10:33 pm MDT (04:33 UTC): moderate turbulence. At the destination end, 47 nm east of the line.
as filed, and in English
```
ARP UAL932 4206N 07001W 0433 F350 TB MODERATE SK CLEAR IC NONE
```
Report
a routine report filed through ARP
A20N at 25,000 ft, 45 nm west, 12:19 am MDT (06:19 UTC): light chop turbulence up to 26,000 ft, remarks: during the climb ZDVWC-06. At the departure end, 45 nm west of the line.
as filed, and in English
```
DEN UA /OV DEN250045/TM 0619/FL250/TP A20N/TB OCNL LGT CHOP BLO 260/RM DURC. ZDVWC-06
```
Report
a routine report filed through DEN
Where
45 nm west (250°) of DEN
Time
06:19 UTC
Height
at 25,000 ft
Aircraft
A20N
Turbulence
occasional light chop below 26,000 ft
Remarks
during the climb ZDVWC-06
B738 descending, 3 nm south, 12:15 am MDT (06:15 UTC): light chop turbulence. At the departure end, 3 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0615/FLDURD/TP B738/TB LGT CHOP
```
Report
a routine report filed through DEN
Where
over DEN
Time
06:15 UTC
Height
during the descent
Aircraft
B738
Turbulence
light chop
A333 descending, 24 nm south, 11:44 pm MDT (05:44 UTC): a routine report with nothing remarked on. 974 nm along the route, 24 nm south of the line.
as filed, and in English
```
DTW UA /OV DTW/TM 0544/FLDURD/TP A333/SK TOPS 025
```
Report
a routine report filed through DTW
Where
over DTW
Time
05:44 UTC
Height
during the descent
Aircraft
A333
Sky
tops 2,500 ft
B739 descending, 24 nm south, 10:54 pm MDT (04:54 UTC): a routine report with nothing remarked on. 974 nm along the route, 24 nm south of the line.
as filed, and in English
```
DTW UA /OV DTW/TM 0454/FLDURD/TP B739/SK BASES 011
```
Report
a routine report filed through DTW
Where
over DTW
Time
04:54 UTC
Height
during the descent
Aircraft
B739
Sky
bases 1,100 ft
B763 descending, 32 nm north, 12:21 am MDT (06:21 UTC): overcast above 40,000 ft. At the destination end, 32 nm north 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, 32 nm north, 11:55 pm MDT (05:55 UTC): a routine report with nothing remarked on. At the destination end, 32 nm north 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, 32 nm north, 10:09 pm MDT (04:09 UTC): a routine report with nothing remarked on. At the destination end, 32 nm north 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

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 14 forecast points nearest it (DEN, GLD, GRI, OMA, DSM, DBQ, JOT, MKG, CLE, BUF, SYR, 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	240° at 15 kt	−15 kt		135 kt	11 h 16 min	1:58 pm EDT (17:58 UTC)
5,500 ft	260° at 17 kt	−18 kt	21 °C	138 kt	11 h 01 min	1:43 pm EDT (17:43 UTC)
7,500 ft	260° at 15 kt	−16 kt	12 °C	136 kt	11 h 11 min	1:53 pm EDT (17:53 UTC)
9,500 ft	260° at 13 kt	−13 kt	9 °C	133 kt	11 h 26 min	2:08 pm EDT (18:08 UTC)
11,500 ft	260° at 13 kt	−14 kt	5 °C	134 kt	11 h 21 min	2:03 pm EDT (18:03 UTC)
13,500 ft	260° at 16 kt	−16 kt	1 °C	136 kt	11 h 11 min	1:53 pm EDT (17:53 UTC)
15,500 ft	270° at 19 kt	−19 kt	-4 °C	139 kt	10 h 56 min	1:38 pm EDT (17:38 UTC)
17,500 ft	270° at 22 kt	−22 kt	-8 °C	142 kt	10 h 42 min	1:24 pm EDT (17:24 UTC)
18,000 ft FL180	270° at 22 kt	−23 kt	-9 °C	143 kt	10 h 38 min	1:20 pm EDT (17:20 UTC)
24,000 ft FL240	270° at 27 kt	−28 kt	-21 °C	148 kt	10 h 16 min	12:58 pm EDT (16:58 UTC)
30,000 ft FL300	270° at 36 kt	−37 kt	-34 °C	157 kt	9 h 41 min	12:23 pm EDT (16:23 UTC)
34,000 ft FL340	270° at 47 kt	−47 kt	-41 °C	167 kt	9 h 06 min	11:48 am EDT (15:48 UTC)
39,000 ft FL390	270° at 51 kt	−50 kt	-50 °C	170 kt	8 h 56 min	11:38 am EDT (15:38 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
DEN	used from 0 nm out; 25 nm from the line			240/21 14°	250/44 6°	220/49 -8°	220/49 -21°	230/54 -30°	240/57 -35°	240/49 -45°
GLD	used from 99 nm out; 66 nm from the line		230/49	230/42 15°	220/26 8°	240/18 -7°	230/27 -21°	240/62 -30°	240/61 -35°	250/57 -47°
GRI	used from 199 nm out; 75 nm from the line		230/35 21°	230/23 13°	220/20 7°	240/25 -8°	240/37 -20°	250/49 -33°	260/57 -38°	260/58 -47°
OMA	used from 348 nm out; 38 nm from the line	220/47	240/33 19°	250/18 11°	230/17 6°	260/29 -8°	250/33 -19°	250/51 -33°	260/61 -40°	270/62 -49°
DSM	used from 447 nm out; 42 nm from the line	230/40	250/33 17°	250/18 12°	240/17 5°	260/28 -8°	270/34 -19°	260/41 -33°	260/55 -41°	270/62 -51°
DBQ	used from 596 nm out; 32 nm from the line	230/33	250/30 16°	280/15 9°	260/15 5°	260/21 -7°	260/24 -20°	250/37 -33°	270/42 -43°	280/63 -52°
JOT	used from 696 nm out; 61 nm from the line	250/23	270/22 15°	250/16 10°	240/9 4°	280/22 -7°	280/29 -19°	300/29 -34°	290/50 -43°	300/64 -52°
MKG	used from 795 nm out; 50 nm from the line	260/22	290/16 15°	300/11 10°	290/5 3°	300/26 -9°	300/32 -20°	320/48 -36°	320/61 -45°	310/74 -53°
CLE	used from 944 nm out; 102 nm from the line	340/7	010/16 13°	350/18 8°	350/20 3°	340/31 -10°	340/46 -21°	340/54 -37°	330/62 -44°	340/65 -49°
BUF	used from 1093 nm out; 62 nm from the line	320/10	010/16 10°	360/10 6°	340/13 2°	330/22 -11°	300/25 -23°	320/31 -38°	300/29 -44°	280/36 -50°
SYR	used from 1242 nm out; 39 nm from the line	280/13	350/18 10°	340/10 6°	300/15 1°	280/17 -12°	270/16 -23°	280/25 -38°	250/40 -42°	240/53 -50°
ALB	used from 1341 nm out; 32 nm from the line	120/9	270/8 10°	L/V 5°	260/9 1°	260/34 -10°	250/42 -22°	240/57 -35°	240/70 -42°	240/65 -50°
BDL	used from 1441 nm out; 36 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°
BOS	used from 1491 nm out; 15 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°

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
DEN Denver, CO	departure	VFR Sky: a few clouds at 6,000 feet, scattered clouds at 22,000 feet	from the southwest (220°) at 21 knots, gusting to 29	10+ mi	none	5,433 ft	11:53 pm MDT (05:53 UTC)
AKO Akron, CO	70 nm out, 1 nm south of the line	VFR	from the south-southwest (210°) at 18 knots, gusting to 25	10+ mi	none	4,716 ft	05:53 UTC
GRI Grand Island, NE	298 nm out, 9 nm south of the line, tower	VFR	from the south (180°) at 12 knots	10+ mi	none	1,847 ft	05:53 UTC
OMA Omaha, NE	407 nm out, 12 nm south of the line, tower	VFR Sky: a few clouds at 25,000 feet	from the south-southeast (150°) at 8 knots	10+ mi	none	984 ft	05:52 UTC
CID Cedar Rapids, IA	596 nm out, 10 nm southeast of the line, tower	VFR	from the south (180°) at 6 knots	10+ mi	none	869 ft	02:52 UTC
RFD Chicago/Rockford, IL	715 nm out, 6 nm southeast of the line, tower	VFR Sky: a broken layer at 25,000 feet	calm	10+ mi	25,000 ft	742 ft	05:54 UTC
UGN Chicago/Waukegan, IL	775 nm out, 3 nm northwest of the line, tower	VFR	from the southwest (230°) at 7 knots	10+ mi	none	728 ft	05:51 UTC
PTK Pontiac, MI	974 nm out, 4 nm northwest of the line, tower	IFR Sky: overcast at 700 feet	from the west-southwest (240°) at 6 knots	10+ mi	700 ft	980 ft	05:53 UTC
BUF Buffalo, NY	1182 nm out, 16 nm north of the line, tower	VFR Sky: scattered clouds at 12,000 feet, a broken layer at 14,000 feet	from the south (170°) at 3 knots	10+ mi	14,000 ft	726 ft	05:54 UTC
ITH Ithaca, NY	1282 nm out, 9 nm south of the line, tower	IFR Sky: overcast at 600 feet Weather: mist	calm	3 mi	600 ft	1,099 ft	06:29 UTC
ORH Worcester, MA	1481 nm out, 10 nm south of the line, tower	low IFR Sky: overcast at 200 feet Weather: light rain, mist	from the north-northeast (030°) at 8 knots	2 mi	200 ft	1,009 ft	06:38 UTC
BOS Boston, MA	destination	marginal VFR Sky: a few clouds at 500 feet, a broken layer at 2,100 feet, overcast at 3,600 feet Weather: light rain, mist	from the north (010°) at 10 knots	4 mi	2,100 ft	19 ft	2:19 am EDT (06:19 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 BOS when you get there the forecast at the estimated arrival, 11:38 am EDT (15:38 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 2:00 am EDT (06:00 UTC): wind from the northeast at 12 knots, visibility 3 miles, light rain showers, mist, overcast at 300 feet
From Mon 7:00 am EDT (11:00 UTC): wind from the north-northeast at 11 knots, visibility 5 miles, mist, a broken layer 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 DEN, the departure

From Mon 12:00 am MDT (06:00 UTC): wind from the south-southwest at 15 knots, gusting to 25, visibility more than 6 miles, a few clouds at 14,000 feet
From Mon 3:00 am MDT (09:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, a few clouds at 22,000 feet
From Mon 10:00 am MDT (16:00 UTC): wind from the southwest at 14 knots, gusting to 21, visibility more than 6 miles, clear skies
From Mon 4:00 pm MDT (22:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, clear skies
From Mon 7:00 pm MDT (01:00 UTC): wind from the northeast at 8 knots, visibility more than 6 miles, a few clouds at 15,000 feet
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 3,000 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 16 nm from the route, at the destination end · drones kept away from a public gathering · starts Saturday 17 October · ZBW

Daylight

Sunset at DEN 6:22 pm MDT (00:22 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 southern Rockies · loop National Weather Service

Radar now, the northern Rockies · 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: Denver International, General Edward Lawrence Logan International.