Plan a flight · Mon 12:28 am PDT (07:28 UTC)

San Francisco International to Manchester Boston Regional SFO → MHT

2,319 nautical miles (2,669 statute miles) northeast on a straight line, true course 066°, about 052° magnetic at the departure end (variation 14E). At 120 knots that is 13 h 29 min at the quickest height in today's winds (39,000 ft, a 52-knot tailwind), arriving about 4:57 pm EDT (20:57 UTC). Right now SFO is VFR, wind from the south (180°) at 15 knots; MHT is marginal VFR, wind from the north-northeast (020°) at 6 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: 1 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 W16W: thunderstorms (a convective SIGMET) up to 27,000 ft, moving from the southwest at 20 knots, until 1:55 am PDT (08:55 UTC). Over the route from 310 to 400 nm out.
as issued
```
WSUS33 KKCI 120655
MKCW WST 120655
CONVECTIVE SIGMET 16W
VALID UNTIL 0855Z
UT NV
FROM 50NW BVL-20NE BVL-40SE OAL-20N OAL-50NW BVL
AREA TS MOV FROM 24020KT. TOPS TO FL270.
```
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 120 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 250 to 770 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 260 to 760 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 380 to 890 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 560 to 930 nm out.
AIRMET TANGO 1W: 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 670 to 840 nm out.
AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 670 to 760 nm out.
AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 930 to 1080 nm out.
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 960 to 1550 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 600 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 250 nm of the route.
AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the last 200 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 2119 to 2289 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 10,000 ft. Over the last 60 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 SFO.

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

B38M at 30,000 ft, 36 nm north, 10:45 pm PDT (05:45 UTC): moderate chop turbulence. 750 nm along the route, 36 nm north of the line.
as filed, and in English
```
RIW UA /OV BOY126080/TM 0545/FL300/TP B38M/TB CONS MOD CHOP /ZLC
```
Report
a routine report filed through RIW
Where
80 nm southeast (126°) of BOY
Time
05:45 UTC
Height
at 30,000 ft
Aircraft
B38M
Turbulence
continuous moderate chop zlc
UAL330 at 35,000 ft, 4 nm west, 9:30 pm PDT (04:30 UTC): moderate turbulence, wind 235° at 92 knots. At the destination end, 4 nm west 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
A359 at 37,000 ft, 32 nm north, 11:18 pm PDT (06:18 UTC): light to moderate chop turbulence. 2109 nm along the route, 32 nm north of the line.
as filed, and in English
```
ART UA /OV ART/TM 0618/FL370/TP A359/TB CONS LGT OCNL MOD CHOP
```
Report
a routine report filed through ART
Where
over ART
Time
06:18 UTC
Height
at 37,000 ft
Aircraft
A359
Turbulence
continuous light occasional moderate chop
B763 descending, 0 nm east, 11:21 pm PDT (06:21 UTC): overcast above 40,000 ft. At the destination end, 0 nm east 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, 0 nm east, 10:55 pm PDT (05:55 UTC): a routine report with nothing remarked on. At the destination end, 0 nm east 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

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 21 forecast points nearest it (SFO, SAC, RNO, BAM, ELY, SLC, RKS, LND, BFF, PIR, ONL, FSD, MCW, LSE, GRB, MKG, TVC, BUF, SYR, ALB, 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	−14 kt		134 kt	17 h 18 min	8:46 pm EDT (00:46 UTC)
5,500 ft	240° at 11 kt	−11 kt	20 °C	131 kt	17 h 42 min	9:10 pm EDT (01:10 UTC)
7,500 ft	230° at 13 kt	−12 kt	10 °C	132 kt	17 h 34 min	9:02 pm EDT (01:02 UTC)
9,500 ft	230° at 13 kt	−13 kt	6 °C	133 kt	17 h 26 min	8:54 pm EDT (00:54 UTC)
11,500 ft	230° at 16 kt	−15 kt	3 °C	135 kt	17 h 11 min	8:39 pm EDT (00:39 UTC)
13,500 ft	240° at 18 kt	−18 kt	-2 °C	138 kt	16 h 48 min	8:16 pm EDT (00:16 UTC)
15,500 ft	240° at 20 kt	−20 kt	-6 °C	140 kt	16 h 34 min	8:02 pm EDT (00:02 UTC)
17,500 ft	250° at 22 kt	−23 kt	-10 °C	143 kt	16 h 13 min	7:41 pm EDT (23:41 UTC)
18,000 ft FL180	250° at 22 kt	−23 kt	-11 °C	143 kt	16 h 13 min	7:41 pm EDT (23:41 UTC)
24,000 ft FL240	240° at 28 kt	−28 kt	-22 °C	148 kt	15 h 40 min	7:08 pm EDT (23:08 UTC)
30,000 ft FL300	250° at 35 kt	−36 kt	-33 °C	156 kt	14 h 52 min	6:20 pm EDT (22:20 UTC)
34,000 ft FL340	250° at 43 kt	−44 kt	-40 °C	164 kt	14 h 08 min	5:36 pm EDT (21:36 UTC)
39,000 ft FL390	250° at 51 kt	−52 kt	-48 °C	172 kt	13 h 29 min	4:57 pm EDT (20:57 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
SFO	used from 0 nm out; 25 nm from the line	120/13	090/14 5°	040/14 -1°	350/17 -5°	360/42 -14°	360/64 -23°	350/38 -32°	300/19 -37°	250/18 -44°
SAC	used from 50 nm out; 35 nm from the line	110/6	L/V 4°	010/11 -2°	350/11 -7°	340/24 -16°	360/44 -23°	330/24 -30°	270/21 -35°	230/23 -43°
RNO	used from 100 nm out; 63 nm from the line		010/9	320/10 -2°	210/23 -9°	210/34 -19°	220/36 -25°	230/31 -29°	230/41 -33°	230/38 -42°
BAM	used from 250 nm out; 73 nm from the line			310/7 0°	270/19 -7°	200/38 -17°	190/49 -28°	220/69 -29°	220/63 -33°	230/48 -41°
ELY	used from 300 nm out; 57 nm from the line			200/39 3°	210/27 -2°	210/45 -15°	220/56 -24°	210/60 -28°	210/63 -34°	220/61 -43°
SLC	used from 450 nm out; 45 nm from the line		200/5	230/8 2°	220/20 -2°	210/40 -12°	190/53 -25°	210/62 -30°	220/69 -34°	220/64 -43°
RKS	used from 600 nm out; 36 nm from the line			200/41	220/44 1°	220/35 -11°	220/46 -24°	210/53 -27°	220/62 -35°	230/61 -44°
LND	used from 750 nm out; 112 nm from the line			200/23 6°	220/31 1°	220/39 -11°	230/39 -23°	220/51 -28°	220/66 -37°	230/68 -45°
BFF	used from 800 nm out; 83 nm from the line		180/28	220/33 15°	210/31 7°	230/32 -9°	220/41 -21°	220/40 -33°	240/47 -36°	250/54 -46°
PIR	used from 1000 nm out; 100 nm from the line		170/22 19°	190/25 13°	210/32 6°	240/23 -9°	250/32 -21°	250/38 -36°	260/44 -40°	260/52 -47°
ONL	used from 1050 nm out; 61 nm from the line		210/31 20°	230/27 13°	230/18 7°	220/19 -8°	240/26 -20°	250/44 -35°	270/52 -39°	260/57 -47°
FSD	used from 1150 nm out; 45 nm from the line	190/9	230/30 18°	240/23 13°	240/20 6°	260/22 -9°	250/31 -21°	250/43 -36°	260/49 -43°	270/53 -47°
MCW	used from 1300 nm out; 45 nm from the line	220/44	250/30 17°	230/14 12°	240/17 6°	250/22 -8°	270/29 -20°	250/34 -34°	260/52 -43°	260/59 -51°
LSE	used from 1400 nm out; 32 nm from the line	230/40	240/24 17°	240/13 10°	250/13 6°	280/22 -9°	250/28 -21°	250/41 -34°	260/42 -44°	270/62 -53°
GRB	used from 1550 nm out; 44 nm from the line	250/36	270/23 16°	270/14 9°	240/18 4°	280/26 -9°	280/29 -20°	290/42 -36°	290/51 -45°	290/72 -55°
MKG	used from 1649 nm out; 40 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°
TVC	used from 1699 nm out; 60 nm from the line	260/31	280/22 15°	290/18 10°	270/13 2°	290/25 -10°	300/35 -21°	310/52 -37°	320/59 -47°	300/84 -54°
BUF	used from 1849 nm out; 133 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 2049 nm out; 45 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 2149 nm out; 52 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°
BOS	used from 2299 nm out; 46 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
SFO San Francisco, CA	departure	VFR Sky: a few clouds at 2,000 feet	from the south (180°) at 15 knots	10+ mi	none	13 ft	11:56 pm PDT (06:56 UTC)
LVK Livermore, CA	30 nm out, 8 nm south of the line, tower	VFR	from the northwest (320°) at 3 knots	10+ mi	none	399 ft	06:53 UTC
TMT Austin, NV	270 nm out, 9 nm northwest of the line	VFR Sky: a broken layer at 6,000 feet, overcast at 8,000 feet	from the west (270°) at 3 knots	10+ mi	6,000 ft	5,735 ft	07:15 UTC
SLC Salt Lake City, UT	520 nm out, 3 nm northwest of the line, tower	VFR Sky: a few clouds at 4,300 feet, scattered clouds at 6,500 feet, a broken layer at 13,000 feet, overcast at 17,000 feet	from the east-southeast (120°) at 5 knots	10+ mi	13,000 ft	4,230 ft	06:54 UTC
GUR Guernsey, WY	860 nm out, 3 nm west of the line, tower	VFR Sky: a broken layer at 15,000 feet	from the east (100°) at 4 knots	10+ mi	15,000 ft	4,401 ft	06:55 UTC
VTN Valentine, NE	1050 nm out, 5 nm west of the line	low IFR Sky: overcast at 300 feet	from the east (090°) at 10 knots	8 mi	300 ft	2,595 ft	06:52 UTC
FSD Sioux Falls, SD	1220 nm out, 17 nm north of the line, tower	VFR	from the north (010°) at 3 knots	10+ mi	none	1,430 ft	06:56 UTC
LSE La Crosse, WI	1460 nm out, 11 nm northwest of the line, tower	VFR	from the south (190°) at 11 knots	10+ mi	none	655 ft	06:53 UTC
MBS Saginaw, MI	1769 nm out, 18 nm south of the line, tower	VFR	from the south-southwest (210°) at 7 knots	7 mi	none	668 ft	06:53 UTC
CYYZ Toronto,	1959 nm out, 1 nm northwest of the line	marginal VFR Sky: overcast at 2,600 feet Weather: mist	from the west-northwest (290°) at 6 knots	3 mi	2,600 ft	569 ft	07:00 UTC
RME Rome, NY	2149 nm out, 9 nm southwest of the line, tower	VFR Sky: a few clouds at 300 feet, a broken layer at 3,400 feet, overcast at 4,200 feet	from the southeast (130°) at 3 knots	10+ mi	3,400 ft	504 ft	06:53 UTC
MHT Manchester, NH	destination	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	2:53 am EDT (06:53 UTC)

The highest airport on this list sits at 5,735 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At MHT when you get there the forecast at the estimated arrival, 4:57 pm EDT (20:57 UTC)

Wind from the northwest at 6 knots, visibility more than 6 miles, a broken layer at 5,000 feet VFR

The whole forecast for MHT

From Mon 2:00 am EDT (06:00 UTC): wind from the north at 5 knots, visibility 4 miles, light rain, mist, scattered clouds at 400 feet, overcast at 1,000 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, a broken layer at 5,000 feet
From Tue 1:00 am EDT (05:00 UTC): wind light and variable, visibility 3 miles, mist, overcast at 1,500 feet

The forecast for SFO, the departure

From Sun 11:00 pm PDT (06:00 UTC): wind from the south at 6 knots, visibility more than 6 miles, a few clouds at 2,000 feet
From Mon 11:00 am PDT (18:00 UTC): wind from the northeast at 5 knots, visibility more than 6 miles, clear skies
From Mon 3:00 pm PDT (22:00 UTC): wind from the west at 12 knots, visibility more than 6 miles, clear skies
From Mon 8:00 pm PDT (03:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, clear skies

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

No temporary flight restriction on or near this route right now.

Daylight

Sunset at SFO 6:35 pm PDT (01:35 UTC), at MHT 6:08 pm EDT (22:08 UTC) (civil twilight ends 6:36 pm EDT (22:36 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 Pacific Southwest · loop National Weather Service

Radar now, the southern Rockies · loop National Weather Service

Radar now, the northern Rockies · 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: San Francisco International, Manchester Boston Regional.