Plan a flight · Sun 6:49 pm PDT (01:49 UTC)

Boeing Fld/King County International to John F Kennedy International BFI → JFK

2,098 nautical miles (2,414 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 20 min at the quickest height in today's winds (39,000 ft, a 50-knot tailwind), arriving about 10:09 am EDT (14:09 UTC). 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: 2 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 2E: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the southwest at 20 knots, until 7:55 pm PDT (02:55 UTC). Over the last 50 nm of the route.

as issued

WSUS31 KKCI 120055
MKCE WST 120055
CONVECTIVE SIGMET 2E
VALID UNTIL 0255Z
CT NY NJ PA DE MD AND NJ NY CT CSTL WTRS
FROM 30NE SAX-30SSW HTO-30ESE EMI-50WSW HAR-30NE SAX
AREA EMBD TS MOV FROM 22020KT. TOPS TO FL310.

AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 170 nm of the route.
AIRMET ZULU 2C: moderate icing up to 16,000 ft. Over the route from 120 to 499 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 250 to 519 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 270 to 819 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 360 to 849 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 939 to 1079 nm out.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the route from 1828 to 2058 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 240 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1868 to 2018 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 13,000 ft. Over the last 110 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 6,000 ft, 6 nm south, 5:47 pm PDT (00:47 UTC): moderate turbulence. At the destination end, 6 nm south of the line.
as filed, and in English
```
EWR UA /OV 2 NW OF EWR/TM 0047/FL60/TP B38M/TB MODERATE
```
Report
a routine report filed through EWR
Where
2 northwest of ewr
Time
00:47 UTC
Height
at 6,000 ft
Aircraft
B38M
Turbulence
moderate
CRJ7 at 15,000 ft, 26 nm south, 5:07 pm PDT (00:07 UTC): moderate chop turbulence. At the destination end, 26 nm south of the line.
as filed, and in English
```
BLM UA /OV COL/TM 0007/FL150/TP CRJ7/TB MOD CHOP
```
Report
a routine report filed through BLM
Where
over COL
Time
00:07 UTC
Height
at 15,000 ft
Aircraft
CRJ7
Turbulence
moderate chop
BCS3 at 4,000 ft, 38 nm northeast, 5:42 pm PDT (00:42 UTC): moderate turbulence, imc. At the destination end, 38 nm northeast of the line.
as filed, and in English
```
BDR UA /OV BDR180010/TM 0042/FL040/TP BCS3/WX IMC/TB MOD
```
Report
a routine report filed through BDR
Where
10 nm south (180°) of BDR
Time
00:42 UTC
Height
at 4,000 ft
Aircraft
BCS3
Weather
instrument conditions
Turbulence
moderate
TBM9 descending, 32 nm east, 4:45 pm PDT (23:45 UTC): moderate turbulence, a broken layer above 700 ft. At the destination end, 32 nm east of the line.
as filed, and in English
```
ISP UA /OV ISP/TM 2345/FLDURD/TP TBM9/SK BKN007/TB MOD
```
Report
a routine report filed through ISP
Where
over ISP
Time
23:45 UTC
Height
during the descent
Aircraft
TBM9
Sky
a broken layer from 700 ft
Turbulence
moderate
A333 at 3,000 ft, 25 nm south, 4:10 pm PDT (23:10 UTC): moderate turbulence. At the destination end, 25 nm south of the line.
as filed, and in English
```
JFK UA /OV JFK180025/TM 2310/FL030/TP A333/TB MOD TURB
```
Report
a routine report filed through JFK
Where
25 nm south (180°) of JFK
Time
23:10 UTC
Height
at 3,000 ft
Aircraft
A333
Turbulence
moderate turbulence
A32N , 1 nm southeast, 4:01 pm PDT (23:01 UTC): moderate turbulence. At the destination end, 1 nm southeast of the line.
as filed, and in English
```
JFK UA /OV JFK10008/TM 2301/FL3000/TP A32N/TB MOD TURB
```
Report
a routine report filed through JFK
Where
JFK10008
Time
23:01 UTC
Height
at 300,000 ft
Aircraft
A32N
Turbulence
moderate turbulence
TBM9 descending, 32 nm east, 3:55 pm PDT (22:55 UTC): moderate turbulence, a broken layer above 700 ft. At the destination end, 32 nm east of the line.
as filed, and in English
```
ISP UA /OV ISP/TM 2255/FLDURD/TP TBM9/SK BKN007/TB MOD
```
Report
a routine report filed through ISP
Where
over ISP
Time
22:55 UTC
Height
during the descent
Aircraft
TBM9
Sky
a broken layer from 700 ft
Turbulence
moderate
PC12 at 15,000 ft, 43 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. At the departure end, 43 nm south of the line.
as filed, and in English
```
YKM UA /OV YKM270050/TM 0042/FL150/TP PC12/SK TOP130/RM -ZSE
```
Report
a routine report filed through YKM
Where
50 nm west (270°) of YKM
Time
00:42 UTC
Height
at 15,000 ft
Aircraft
PC12
Sky
TOP130
Remarks
zse
PC12 at 13,000 ft, 43 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. At the departure end, 43 nm south of the line.
as filed, and in English
```
YKM UA /OV YKM270050/TM 0042/FL130/TP PC12/SK TOP130/RM -ZSE
```
Report
a routine report filed through YKM
Where
50 nm west (270°) of YKM
Time
00:42 UTC
Height
at 13,000 ft
Aircraft
PC12
Sky
TOP130
Remarks
zse
E75L descending, 25 nm north, 6:06 pm PDT (01:06 UTC): overcast above 4,000 ft. 330 nm along the route, 25 nm north of the line.
as filed, and in English
```
GPI UA /OV KGPI/TM 0106/FLDURD/TP E75L/SK OVC040
```
Report
a routine report filed through GPI
Where
over KGPI
Time
01:06 UTC
Height
during the descent
Aircraft
E75L
Sky
overcast from 4,000 ft
CRJ2 at 2,900 ft, 36 nm south, 5:05 pm PDT (00:05 UTC): a routine report with nothing remarked on. 799 nm along the route, 36 nm south of the line.
as filed, and in English
```
DIK UA /OV DIK/TM 0005/FL029/TP CRJ2/SK BASE029
```
Report
a routine report filed through DIK
Where
over DIK
Time
00:05 UTC
Height
at 2,900 ft
Aircraft
CRJ2
Sky
BASE029
B38M at 32,000 ft, 17 nm north, 4:12 pm PDT (23:12 UTC): light chop turbulence. 799 nm along the route, 17 nm north of the line.
as filed, and in English
```
MOT UA /OV MOT225061/TM 2312/FL320/TP B38M/TB CONS LGT CHOP
```
Report
a routine report filed through MOT
Where
61 nm southwest (225°) of MOT
Time
23:12 UTC
Height
at 32,000 ft
Aircraft
B38M
Turbulence
continuous light chop
BE20 at 3,000 ft, 36 nm south, 3:56 pm PDT (22:56 UTC): no turbulence, no icing. 799 nm along the route, 36 nm south of the line.
as filed, and in English
```
DIK UA /OV DIK/TM 2256/FL030/TP BE20/SK BASE031/TB NEG/IC NEG
```
Report
a routine report filed through DIK
Where
over DIK
Time
22:56 UTC
Height
at 3,000 ft
Aircraft
BE20
Sky
BASE031
Turbulence
none
Icing
none
PC12 at 16,000 ft, 19 nm north, 5:12 pm PDT (00:12 UTC): light icing, -6 °C. 949 nm along the route, 19 nm north of the line.
as filed, and in English
```
JMS UA /OV JMS332028/TM 0012/FL160/TP PC12/TA M06/IC LGT CLR
```
Report
a routine report filed through JMS
Where
28 nm northwest (332°) of JMS
Time
00:12 UTC
Height
at 16,000 ft
Aircraft
PC12
Temperature
−6 °C
Icing
light clear

16 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 18 forecast points nearest it (SEA, YKM, GEG, GPI, GTF, GGW, DIK, MOT, GFK, AXN, DLH, 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	180° at 7 kt	+2 kt		118 kt	17 h 47 min	3:36 pm EDT (19:36 UTC)
5,500 ft	120° at 2 kt	+4 kt	2 °C	116 kt	18 h 05 min	3:54 pm EDT (19:54 UTC)
7,500 ft	230° at 2 kt	0	6 °C	120 kt	17 h 29 min	3:18 pm EDT (19:18 UTC)
9,500 ft	250° at 5 kt	−4 kt	3 °C	124 kt	16 h 55 min	2:44 pm EDT (18:44 UTC)
11,500 ft	240° at 9 kt	−7 kt	0 °C	127 kt	16 h 31 min	2:20 pm EDT (18:20 UTC)
13,500 ft	240° at 12 kt	−10 kt	-4 °C	130 kt	16 h 08 min	1:57 pm EDT (17:57 UTC)
15,500 ft	240° at 16 kt	−13 kt	-8 °C	133 kt	15 h 46 min	1:35 pm EDT (17:35 UTC)
17,500 ft	240° at 20 kt	−16 kt	-12 °C	136 kt	15 h 26 min	1:15 pm EDT (17:15 UTC)
18,000 ft FL180	240° at 20 kt	−16 kt	-13 °C	136 kt	15 h 26 min	1:15 pm EDT (17:15 UTC)
24,000 ft FL240	250° at 29 kt	−24 kt	-23 °C	144 kt	14 h 34 min	12:23 pm EDT (16:23 UTC)
30,000 ft FL300	250° at 42 kt	−37 kt	-36 °C	157 kt	13 h 22 min	11:11 am EDT (15:11 UTC)
34,000 ft FL340	250° at 48 kt	−42 kt	-44 °C	162 kt	12 h 57 min	10:46 am EDT (14:46 UTC)
39,000 ft FL390	260° at 55 kt	−50 kt	-49 °C	170 kt	12 h 20 min	10:09 am EDT (14:09 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
SEA	used from 0 nm out; 26 nm from the line	360/9	350/10 1°	010/10 -5°	030/20 -11°	020/60 -17°	010/86 -26°	360/90 -40°	010/68 -42°	360/31 -43°
YKM	used from 50 nm out; 66 nm from the line	030/16	020/18 0°	030/30 -8°	030/23 -13°	020/40 -23°	010/73 -29°	010/54 -36°	360/29 -37°	330/16 -40°
GEG	used from 100 nm out; 69 nm from the line		050/18 -2°	060/19 -8°	L/V -11°	160/11 -24°	190/17 -31°	200/19 -35°	220/14 -37°	250/11 -41°
GPI	used from 250 nm out; 57 nm from the line		060/19 -3°	110/11 -8°	130/6 -8°	200/40 -19°	190/58 -28°	200/101 -39°	220/73 -43°	230/41 -43°
GTF	used from 400 nm out; 31 nm from the line		070/21	080/18 -6°	120/5 -5°	180/30 -14°	200/53 -24°	210/80 -38°	220/83 -44°	230/68 -46°
GGW	used from 549 nm out; 64 nm from the line		090/18 0°	140/12 -2°	150/13 -3°	200/35 -12°	230/56 -22°	240/75 -37°	240/81 -46°	240/78 -49°
DIK	used from 699 nm out; 80 nm from the line		110/15 6°	200/17 5°	230/31 1°	240/47 -10°	240/52 -20°	230/52 -36°	240/57 -45°	250/67 -51°
MOT	used from 849 nm out; 64 nm from the line		070/8 6°	180/7 2°	220/18 -1°	240/37 -11°	250/55 -20°	250/64 -36°	250/70 -46°	250/80 -54°
GFK	used from 949 nm out; 75 nm from the line	050/18	L/V 10°	240/20 7°	240/36 1°	250/47 -11°	260/53 -21°	270/59 -36°	270/65 -47°	260/88 -56°
AXN	used from 1049 nm out; 51 nm from the line	L/V	220/23 17°	230/24 12°	240/25 5°	260/32 -11°	260/40 -21°	270/50 -35°	270/57 -45°	270/81 -55°
DLH	used from 1149 nm out; 68 nm from the line	240/6	230/22 15°	250/28 11°	230/22 4°	270/33 -12°	280/47 -21°	280/59 -37°	290/65 -47°	290/88 -55°
GRB	used from 1299 nm out; 108 nm from the line	240/24	260/18 16°	270/20 11°	290/14 4°	280/24 -9°	300/34 -21°	310/51 -38°	310/54 -48°	300/71 -51°
TVC	used from 1448 nm out; 51 nm from the line	210/17	290/14 15°	310/20 9°	310/18 2°	310/24 -11°	320/35 -22°	320/53 -39°	310/45 -49°	290/58 -51°
CLE	used from 1648 nm out; 136 nm from the line	340/5	320/13 14°	300/12 8°	310/10 2°	310/14 -10°	340/14 -23°	320/27 -35°	260/28 -40°	250/36 -48°
BUF	used from 1748 nm out; 70 nm from the line	170/19	L/V 10°	040/9 6°	220/8 2°	230/15 -11°	220/33 -22°	220/47 -35°	230/55 -41°	230/56 -50°
PSB	used from 1898 nm out; 75 nm from the line		260/13 13°	220/12 8°	220/11 4°	230/27 -11°	210/31 -21°	220/73 -32°	220/75 -40°	230/66 -50°
AVP	used from 1948 nm out; 28 nm from the line	110/36	190/34 13°	230/11 8°	230/16 4°	230/26 -8°	220/40 -19°	230/73 -33°	230/98 -41°	230/87 -51°
JFK	used from 2048 nm out; 25 nm from the line	140/43	170/35 13°	230/18 9°	250/25 5°	240/40 -7°	230/50 -17°	230/75 -31°	230/78 -41°	230/88 -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	Elevation
BFI Seattle, WA	departure	no report just now	21 ft
SFF Spokane, WA	200 nm out, 9 nm south of the line, tower	no report just now	1,956 ft
GPI Kalispell, MT	330 nm out, 25 nm north of the line, tower	no report just now	2,976 ft
HZE Hazen, ND	839 nm out, 3 nm south of the line	no report just now	1,814 ft
FAR Fargo, ND	1039 nm out, 10 nm north of the line, tower	no report just now	901 ft
BRD Brainerd, MN	1149 nm out, 4 nm northeast of the line	no report just now	1,232 ft
TKV Tomahawk, WI	1339 nm out, 2 nm south of the line	no report just now	1,486 ft
TVC Traverse City, MI	1518 nm out, 13 nm northeast of the line, tower	no report just now	623 ft
OLE Olean, NY	1868 nm out, 6 nm south of the line	no report just now	2,135 ft
CDW Caldwell, NJ	2068 nm out, 4 nm east of the line, tower	no report just now	172 ft
JFK New York, NY	destination	no report just now	13 ft

The highest airport on this list sits at 2,976 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At JFK when you get there the forecast at the estimated arrival, 10:09 am EDT (14:09 UTC)

JFK has no terminal forecast; use the nearest airport that does.

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 2 nm from the route, at the destination end · security · until 20 October · ZNY

Daylight

Sunset at BFI 6:27 pm PDT (01:27 UTC), at JFK 6:19 pm EDT (22:19 UTC) (civil twilight ends 6:47 pm EDT (22:47 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, John F Kennedy International.