Plan a flight · Mon 12:02 am PDT (07:02 UTC)

Boeing Fld/King County International to Newark Liberty International BFI → EWR

2,081 nautical miles (2,394 statute miles) east on a straight line, true course 083°, about 068° magnetic at the departure end (variation 15E). At 120 knots that is 12 h 23 min at the quickest height in today's winds (39,000 ft, a 48-knot tailwind), arriving about 3:25 pm EDT (19:25 UTC). Right now BFI is VFR, wind from the south-southeast (160°) at 4 knots; EWR is marginal VFR, wind from the north (010°) 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: 6 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 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 189 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 129 to 687 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 259 to 408 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 279 to 1115 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 279 to 468 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Near the route, 687 nm along 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 1314 to 1404 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 518 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1862 to 2011 nm out.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 189 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 BFI.

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

B38M at 34,000 ft, 39 nm north, 9:56 pm PDT (04:56 UTC): light chop turbulence. 876 nm along the route, 39 nm north of the line.
as filed, and in English
```
MOT UA /OV MOT115040/TM 0456/FL340/TP B38M/TB LGT CHOP
```
Report
a routine report filed through MOT
Where
40 nm southeast (115°) of MOT
Time
04:56 UTC
Height
at 34,000 ft
Aircraft
B38M
Turbulence
light chop
GA6C descending, 41 nm north, 9:32 pm PDT (04:32 UTC): overcast above 1,000 ft, remarks: bases OVC010. At the destination end, 41 nm north of the line.
as filed, and in English
```
SWF UA /OV SWF 270005/TM 0432/FLDURD/TP GA6C/SK OVC010/RM BASES OVC010
```
Report
a routine report filed through SWF
Where
5 nm west (270°) of SWF
Time
04:32 UTC
Height
during the descent
Aircraft
GA6C
Sky
overcast from 1,000 ft
Remarks
bases OVC010
B763 at 800 ft, 18 nm east, 10:51 pm PDT (05:51 UTC): a broken layer, remarks: bases at at 80,000 ft and tops 1500. At the destination end, 18 nm east of the line.
as filed, and in English
```
JFK UA /OV JFK 2 MILES SOUTHEAST/TM 0551/FL008/TP B763/SK BKN/RM BASES AT 800 AND TOPS 1500
```
Report
a routine report filed through JFK
Where
jfk 2 miles southeast
Time
05:51 UTC
Height
at 800 ft
Aircraft
B763
Sky
a broken layer
Remarks
bases at at 80,000 ft and tops 1500

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 19 forecast points nearest it (SEA, YKM, GEG, GPI, GTF, GGW, DIK, MOT, GFK, AXN, DLH, LSE, GRB, TVC, CLE, BUF, PSB, AVP, JFK). 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	260° at 5 kt	−4 kt		124 kt	16 h 47 min	7:49 pm EDT (23:49 UTC)
5,500 ft	090° at 1 kt	+1 kt	2 °C	119 kt	17 h 29 min	8:31 pm EDT (00:31 UTC)
7,500 ft	240° at 2 kt	−1 kt	6 °C	121 kt	17 h 12 min	8:14 pm EDT (00:14 UTC)
9,500 ft	240° at 6 kt	−4 kt	3 °C	124 kt	16 h 47 min	7:49 pm EDT (23:49 UTC)
11,500 ft	240° at 10 kt	−7 kt	0 °C	127 kt	16 h 23 min	7:25 pm EDT (23:25 UTC)
13,500 ft	240° at 13 kt	−11 kt	-4 °C	131 kt	15 h 53 min	6:55 pm EDT (22:55 UTC)
15,500 ft	250° at 17 kt	−15 kt	-8 °C	135 kt	15 h 25 min	6:27 pm EDT (22:27 UTC)
17,500 ft	260° at 20 kt	−19 kt	-11 °C	139 kt	14 h 58 min	6:00 pm EDT (22:00 UTC)
18,000 ft FL180	260° at 21 kt	−20 kt	-12 °C	140 kt	14 h 52 min	5:54 pm EDT (21:54 UTC)
24,000 ft FL240	250° at 25 kt	−23 kt	-23 °C	143 kt	14 h 33 min	5:35 pm EDT (21:35 UTC)
30,000 ft FL300	260° at 29 kt	−28 kt	-37 °C	148 kt	14 h 04 min	5:06 pm EDT (21:06 UTC)
34,000 ft FL340	260° at 36 kt	−34 kt	-43 °C	154 kt	13 h 31 min	4:33 pm EDT (20:33 UTC)
39,000 ft FL390	260° at 49 kt	−48 kt	-49 °C	168 kt	12 h 23 min	3:25 pm EDT (19:25 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
SEA	used from 0 nm out; 26 nm from the line	050/7	050/11 1°	050/12 -5°	030/31 -7°	010/61 -15°	010/69 -26°	360/73 -40°	360/62 -47°	330/21 -43°
YKM	used from 50 nm out; 66 nm from the line	070/10	040/15 -1°	020/27 -8°	030/25 -13°	020/48 -20°	010/83 -27°	010/77 -37°	010/49 -40°	350/14 -41°
GEG	used from 100 nm out; 69 nm from the line		080/16 -2°	050/17 -7°	080/9 -10°	190/33 -21°	180/31 -32°	L/V -35°	L/V -37°	270/8 -40°
GPI	used from 249 nm out; 58 nm from the line		070/19 -5°	100/16 -7°	080/10 -8°	130/8 -19°	170/37 -28°	200/50 -40°	210/43 -40°	220/41 -42°
GTF	used from 398 nm out; 31 nm from the line		070/11	080/15 -7°	110/19 -9°	190/25 -14°	200/34 -23°	200/54 -39°	220/66 -40°	220/77 -44°
GGW	used from 548 nm out; 66 nm from the line		110/23 0°	130/20 -2°	170/24 -3°	230/44 -11°	220/51 -21°	210/52 -39°	220/64 -44°	240/85 -48°
DIK	used from 697 nm out; 81 nm from the line		150/24 7°	200/38 6°	220/53 0°	230/51 -9°	230/49 -21°	240/37 -37°	240/47 -44°	250/65 -48°
MOT	used from 846 nm out; 65 nm from the line		120/14 5°	200/20 4°	230/33 1°	250/39 -11°	250/50 -21°	240/61 -37°	250/56 -45°	260/68 -51°
GFK	used from 946 nm out; 79 nm from the line	070/18	100/10 9°	250/11 6°	250/27 1°	250/34 -10°	260/43 -21°	260/39 -36°	260/36 -46°	260/59 -53°
AXN	used from 1045 nm out; 52 nm from the line	100/14	250/21 14°	240/24 12°	240/31 5°	260/36 -10°	260/40 -21°	250/42 -36°	260/48 -45°	260/53 -50°
DLH	used from 1145 nm out; 73 nm from the line	080/28	240/21 15°	250/26 9°	250/32 3°	260/42 -11°	270/40 -21°	260/43 -36°	260/46 -46°	260/65 -54°
LSE	used from 1294 nm out; 109 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 1344 nm out; 65 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°
TVC	used from 1493 nm out; 18 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°
CLE	used from 1643 nm out; 136 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 1742 nm out; 77 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°
PSB	used from 1891 nm out; 69 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°
AVP	used from 1941 nm out; 34 nm from the line	150/5	350/13 12°	270/20 8°	260/17 4°	260/25 -11°	240/31 -22°	240/54 -35°	230/61 -41°	240/55 -49°
JFK	used from 2041 nm out; 38 nm from the line	250/18	250/23 14°	240/33 9°	240/33 4°	240/38 -10°	240/45 -21°	230/86 -32°	230/102 -40°	230/84 -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
BFI Seattle, WA	departure	VFR	from the south-southeast (160°) at 4 knots	10+ mi	none	21 ft	11:53 pm PDT (06:53 UTC)
SFF Spokane, WA	199 nm out, 9 nm south of the line, tower	VFR Sky: a few clouds at 9,000 feet, a broken layer at 11,000 feet	calm	10+ mi	11,000 ft	1,956 ft	06:53 UTC
CII Choteau, MT	408 nm out, 4 nm south of the line	no report just now				3,946 ft
GTF Great Falls, MT	438 nm out, 24 nm south of the line, tower	marginal VFR Sky: a few clouds at 300 feet, overcast at 1,200 feet Weather: light snow, mist	from the north-northwest (340°) at 8 knots	5 mi	1,200 ft	3,680 ft	06:53 UTC
SDY Sidney, MT	727 nm out, 11 nm northeast of the line	IFR Sky: a broken layer at 600 feet, overcast at 1,300 feet Weather: rain	from the northeast (050°) at 13 knots	7 mi	600 ft	1,985 ft	06:56 UTC
FAR Fargo, ND	1035 nm out, 12 nm north of the line, tower	low IFR Sky: overcast at 400 feet Weather: mist	from the north (360°) at 15 knots	2 mi	400 ft	901 ft	06:53 UTC
ADC Wadena, MN	1105 nm out, 1 nm south of the line	VFR Sky: scattered clouds at 1,000 feet	from the northeast (040°) at 6 knots	10+ mi	none	1,368 ft	06:55 UTC
SUE Sturgeon Bay, WI	1443 nm out, 5 nm southeast of the line	VFR	from the southwest (230°) at 9 knots	10+ mi	none	724 ft	06:57 UTC
TVC Traverse City, MI	1523 nm out, 17 nm north of the line, tower	VFR	from the south-southwest (210°) at 5 knots	10+ mi	none	623 ft	06:53 UTC
OLE Olean, NY	1872 nm out, 2 nm west of the line	low IFR Sky: overcast at 200 feet Weather: fog	from the west-northwest (300°) at 4 knots	0.5 mi	200 ft	2,135 ft	06:55 UTC
AVP Wilkes-Barre/Scranton, PA	2001 nm out, 2 nm north of the line, tower	marginal VFR Sky: overcast at 1,400 feet	from the northeast (040°) at 3 knots	10+ mi	1,400 ft	961 ft	06:54 UTC
EWR Newark, NJ	destination	marginal VFR Sky: scattered clouds at 800 feet, overcast at 1,100 feet	from the north (010°) at 11 knots	10+ mi	1,100 ft	17 ft	2:51 am EDT (06:51 UTC)

The highest airport on this list sits at 3,946 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At EWR when you get there the forecast at the estimated arrival, 3:25 pm EDT (19:25 UTC)

Wind from the north-northwest at 8 knots, visibility more than 6 miles, a few clouds at 2,500 feet, scattered clouds at 5,000 feet VFR

The whole forecast for EWR

From Mon 2:00 am EDT (06:00 UTC): wind from the north-northeast at 14 knots, visibility more than 6 miles, showers nearby, overcast at 800 feet
From Mon 8:00 am EDT (12:00 UTC): wind from the north at 10 knots, visibility more than 6 miles, a broken layer at 800 feet, overcast at 1,500 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the north at 9 knots, visibility more than 6 miles, a broken layer at 2,500 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the north-northwest at 8 knots, visibility more than 6 miles, a few clouds at 2,500 feet, scattered clouds at 5,000 feet
From Mon 11:00 pm EDT (03:00 UTC): wind from the north at 4 knots, visibility more than 6 miles, a few clouds at 5,000 feet, a few clouds at 15,000 feet

The forecast for BFI, the departure

From Sun 11:00 pm PDT (06:00 UTC): wind calm, visibility more than 6 miles, clear skies
From Mon 3:00 am PDT (10:00 UTC): wind calm, visibility more than 6 miles, patches of fog, clear skies
From Mon 9:00 am PDT (16:00 UTC): wind from the south-southeast at 3 knots, visibility more than 6 miles, clear skies
From Mon 12:00 pm PDT (19:00 UTC): wind from the west-southwest at 3 knots, visibility more than 6 miles, clear skies
From Mon 2:00 pm PDT (21:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, clear skies
From Mon 7:00 pm PDT (02:00 UTC): wind calm, visibility more than 6 miles, clear skies

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

5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 9 nm from the route, at the destination end · security · until 20 October · ZNY

Daylight

Sunset at BFI 6:25 pm PDT (01:25 UTC), at EWR 6:21 pm EDT (22:21 UTC) (civil twilight ends 6:48 pm EDT (22:48 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 Northwest · 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: Boeing Fld/King County International, Newark Liberty International.