Seattle-Tacoma International to John F Kennedy International SEA → JFK
2,099 nautical miles (2,415 statute miles) east on a straight line, true course 083°, about 067° magnetic at the departure end (variation 16E). At 120 knots that is 12 h 30 min at the quickest height in today's winds (39,000 ft, a 48-knot tailwind), arriving about 2:12 pm EDT (18:12 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: 5,790 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 E19E: thunderstorms (a convective SIGMET) up to 43,000 ft, moving from the southwest at 20 knots, until 11:55 pm PDT (06:55 UTC). Over the last 20 nm of the route.
as issued
WSUS31 KKCI 120455 MKCE WST 120455 CONVECTIVE SIGMET 19E VALID UNTIL 0655Z CT NY NJ PA DE MD VA DC WV AND DE NJ NY MD CT VA CSTL WTRS FROM 20NNW HTO-70SSE HTO-90SE SIE-20WNW LYH-40ESE AIR-20NNW HTO AREA EMBD TS MOV FROM 24020KT. TOPS TO FL430.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 190 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 130 to 690 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 250 to 430 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 280 to 1109 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 280 to 470 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Near the route, 690 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 1319 to 1409 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 530 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1869 to 2019 nm out.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 210 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 SEA.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- urgent B39M at 35,000 ft, 25 nm south, 8:15 pm PDT (03:15 UTC): remarks: no inj/dmg zob. 1789 nm along the route, 25 nm south of the line.
as filed, and in English
DKK UUA /OV DKK280040/TM 0315/FL350/TP B39M/TB MTN WVE ACTN +/-5KTS/RM NO INJ/DMG ZOB
- Report
- an urgent report filed through DKK
- Where
- 40 nm west (280°) of DKK
- Time
- 03:15 UTC
- Height
- at 35,000 ft
- Aircraft
- B39M
- Turbulence
- mountain wve actn a 5-knot loss of airspeed
- Remarks
- no inj/dmg zob
- GA6C descending, 36 nm northeast, 9:32 pm PDT (04:32 UTC): overcast above 1,000 ft, remarks: bases OVC010. At the destination end, 36 nm northeast 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
- A321 at 700 ft, 2 nm southwest, 7:46 pm PDT (02:46 UTC): overcast above 700 ft. At the destination end, 2 nm southwest of the line.
as filed, and in English
JFK UA /OV KJFK225002/TM 0246/FL007/TP A321/SK OVC007
- Report
- a routine report filed through JFK
- Where
- 2 nm southwest (225°) of KJFK
- Time
- 02:46 UTC
- Height
- at 700 ft
- Aircraft
- A321
- Sky
- overcast from 700 ft
- A320 descending, 32 nm east, 7:45 pm PDT (02:45 UTC): remarks: final runway 24. At the destination end, 32 nm east of the line.
as filed, and in English
ISP UA /OV ISP/TM 0245/FLDURD/TP A320/SK BCN007/RM FINAL RY24
- Report
- a routine report filed through ISP
- Where
- over ISP
- Time
- 02:45 UTC
- Height
- during the descent
- Aircraft
- A320
- Sky
- BCN007
- Remarks
- final runway 24
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 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 | 270° at 5 kt | −5 kt | 125 kt | 16 h 48 min | 6:30 pm EDT (22:30 UTC) | |
| 5,500 ft | 070° at 1 kt | +1 kt | 2 °C | 119 kt | 17 h 38 min | 7:20 pm EDT (23:20 UTC) |
| 7,500 ft | 250° at 2 kt | −2 kt | 6 °C | 122 kt | 17 h 12 min | 6:54 pm EDT (22:54 UTC) |
| 9,500 ft | 240° at 6 kt | −4 kt | 3 °C | 124 kt | 16 h 56 min | 6:38 pm EDT (22:38 UTC) |
| 11,500 ft | 240° at 10 kt | −7 kt | 0 °C | 127 kt | 16 h 32 min | 6:14 pm EDT (22:14 UTC) |
| 13,500 ft | 240° at 13 kt | −11 kt | -4 °C | 131 kt | 16 h 01 min | 5:43 pm EDT (21:43 UTC) |
| 15,500 ft | 250° at 17 kt | −15 kt | -8 °C | 135 kt | 15 h 33 min | 5:15 pm EDT (21:15 UTC) |
| 17,500 ft | 260° at 20 kt | −19 kt | -11 °C | 139 kt | 15 h 06 min | 4:48 pm EDT (20:48 UTC) |
| 18,000 ft FL180 | 260° at 21 kt | −20 kt | -12 °C | 140 kt | 15 h | 4:42 pm EDT (20:42 UTC) |
| 24,000 ft FL240 | 250° at 25 kt | −23 kt | -23 °C | 143 kt | 14 h 41 min | 4:23 pm EDT (20:23 UTC) |
| 30,000 ft FL300 | 260° at 29 kt | −28 kt | -37 °C | 148 kt | 14 h 11 min | 3:53 pm EDT (19:53 UTC) |
| 34,000 ft FL340 | 260° at 35 kt | −34 kt | -43 °C | 154 kt | 13 h 38 min | 3:20 pm EDT (19:20 UTC) |
| 39,000 ft FL390 | 260° at 50 kt | −48 kt | -49 °C | 168 kt | 12 h 30 min | 2:12 pm EDT (18:12 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; 25 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; 61 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 250 nm out; 60 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 400 nm out; 28 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 550 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 700 nm out; 79 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 849 nm out; 66 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 949 nm out; 78 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 1049 nm out; 50 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 1149 nm out; 70 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° |
| GRB | used from 1299 nm out; 107 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 1449 nm out; 51 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 1649 nm out; 135 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 1749 nm out; 70 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 1899 nm out; 74 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 1949 nm out; 28 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 2049 nm out; 25 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 |
|---|---|---|---|---|---|---|---|
| SEA Seattle, WA | departure | no report just now | 432 ft | ||||
| SFF Spokane, WA | 200 nm out, 5 nm southeast of the line, tower | no report just now | 1,956 ft | ||||
| CII Choteau, MT | 410 nm out, 1 nm southeast of the line | no report just now | 3,946 ft | ||||
| GTF Great Falls, MT | 440 nm out, 22 nm south of the line, tower | no report just now | 3,680 ft | ||||
| HZE Hazen, ND | 839 nm out, 1 nm southeast of the line | no report just now | 1,814 ft | ||||
| FAR Fargo, ND | 1039 nm out, 12 nm north of the line, tower | no report just now | 901 ft | ||||
| ADC Wadena, MN | 1109 nm out, 3 nm southwest of the line | no report just now | 1,368 ft | ||||
| TKV Tomahawk, WI | 1339 nm out, 1 nm southeast of the line | no report just now | 1,486 ft | ||||
| TVC Traverse City, MI | 1519 nm out, 15 nm northeast of the line, tower | no report just now | 623 ft | ||||
| OLE Olean, NY | 1869 nm out, 6 nm south of the line | no report just now | 2,135 ft | ||||
| CDW Caldwell, NJ | 2069 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 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 JFK when you get there the forecast at the estimated arrival, 2:12 pm EDT (18:12 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 SEA 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
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: Seattle-Tacoma International, John F Kennedy International.