Boeing Fld/King County International to Republic Airport BFI → FRG
2,110 nautical miles (2,428 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 38 min at the quickest height in today's winds (39,000 ft, a 47-knot tailwind), arriving about 10:49 pm EDT (02:49 UTC), after sunset at the destination. 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 C20C: thunderstorms (a convective SIGMET) up to 37,000 ft, moving from the southwest at 40 knots, until 8:55 am PDT (15:55 UTC). Over the route from 920 to 990 nm out.
as issued
WSUS32 KKCI 121355 MKCC WST 121355 CONVECTIVE SIGMET 20C VALID UNTIL 1555Z SD ND FROM 80W GFK-40WNW FAR-40W ABR-50ENE DPR-30S BIS-80W GFK AREA TS MOV FROM 21040KT. TOPS TO FL370.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 60 to 400 nm out.
- AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the route from 200 to 700 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 300 to 510 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 1300 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 710 to 990 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 route from 1820 to 1970 nm out.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 1880 to 2020 nm out.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 40,000 ft. Over the last 40 nm of the route.
- 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 30 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
Not fetched just now.
Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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, SYR, 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 | 280° at 6 kt | −6 kt | 126 kt | 16 h 45 min | 2:56 am EDT (06:56 UTC) | |
| 5,500 ft | 280° at 7 kt | −7 kt | -1 °C | 127 kt | 16 h 37 min | 2:48 am EDT (06:48 UTC) |
| 7,500 ft | 280° at 10 kt | −10 kt | 6 °C | 130 kt | 16 h 14 min | 2:25 am EDT (06:25 UTC) |
| 9,500 ft | 270° at 12 kt | −12 kt | 3 °C | 132 kt | 15 h 59 min | 2:10 am EDT (06:10 UTC) |
| 11,500 ft | 270° at 13 kt | −14 kt | 1 °C | 134 kt | 15 h 45 min | 1:56 am EDT (05:56 UTC) |
| 13,500 ft | 270° at 15 kt | −15 kt | -3 °C | 135 kt | 15 h 38 min | 1:49 am EDT (05:49 UTC) |
| 15,500 ft | 270° at 17 kt | −17 kt | -7 °C | 137 kt | 15 h 24 min | 1:35 am EDT (05:35 UTC) |
| 17,500 ft | 270° at 19 kt | −19 kt | -11 °C | 139 kt | 15 h 11 min | 1:22 am EDT (05:22 UTC) |
| 18,000 ft FL180 | 270° at 19 kt | −19 kt | -12 °C | 139 kt | 15 h 11 min | 1:22 am EDT (05:22 UTC) |
| 24,000 ft FL240 | 270° at 22 kt | −22 kt | -24 °C | 142 kt | 14 h 52 min | 1:03 am EDT (05:03 UTC) |
| 30,000 ft FL300 | 260° at 27 kt | −26 kt | -37 °C | 146 kt | 14 h 27 min | 12:38 am EDT (04:38 UTC) |
| 34,000 ft FL340 | 270° at 34 kt | −35 kt | -41 °C | 155 kt | 13 h 37 min | 11:48 pm EDT (03:48 UTC) |
| 39,000 ft FL390 | 270° at 44 kt | −47 kt | -47 °C | 167 kt | 12 h 38 min | 10:49 pm EDT (02:49 UTC) |
Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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 | L/V | L/V 1° | 020/13 -2° | 020/27 -4° | 010/43 -14° | 360/54 -26° | 360/63 -40° | 010/60 -48° | 350/39 -50° |
| YKM | used from 50 nm out; 66 nm from the line | L/V | 350/9 0° | 040/20 -5° | 030/23 -8° | 020/41 -18° | 010/74 -27° | 010/73 -40° | 020/54 -44° | 350/9 -43° |
| GEG | used from 100 nm out; 69 nm from the line | 060/10 -2° | 050/11 -3° | 050/9 -8° | 050/27 -19° | 040/26 -31° | 030/32 -39° | 020/19 -41° | L/V -42° | |
| GPI | used from 250 nm out; 56 nm from the line | L/V -3° | L/V -4° | L/V -6° | 210/19 -17° | 220/26 -32° | 190/23 -40° | 220/25 -39° | 220/34 -42° | |
| GTF | used from 400 nm out; 33 nm from the line | L/V | L/V -4° | 230/12 -3° | 210/12 -17° | 190/23 -29° | 200/48 -39° | 210/69 -39° | 220/66 -42° | |
| GGW | used from 550 nm out; 62 nm from the line | 360/9 -3° | L/V -4° | 250/12 -4° | 250/21 -12° | 230/25 -27° | 220/53 -34° | 230/59 -38° | 240/64 -44° | |
| DIK | used from 700 nm out; 82 nm from the line | 330/11 1° | 230/20 4° | 220/22 0° | 230/29 -12° | 240/27 -25° | 240/40 -34° | 230/49 -37° | 240/55 -44° | |
| MOT | used from 800 nm out; 54 nm from the line | L/V 2° | 220/12 2° | 220/27 0° | 220/36 -12° | 230/33 -24° | 230/39 -34° | 230/50 -39° | 250/63 -46° | |
| GFK | used from 950 nm out; 69 nm from the line | 100/10 | 150/9 10° | 200/19 7° | 230/27 1° | 240/51 -11° | 230/43 -23° | 230/40 -36° | 240/56 -40° | 260/67 -47° |
| AXN | used from 1050 nm out; 56 nm from the line | 110/18 | 200/12 17° | 220/22 12° | 230/26 4° | 240/31 -10° | 240/45 -21° | 240/38 -36° | 250/49 -38° | 260/56 -47° |
| DLH | used from 1150 nm out; 62 nm from the line | 090/34 | 210/13 14° | 240/14 11° | 250/20 4° | 250/38 -10° | 260/39 -22° | 250/41 -37° | 270/53 -41° | 280/68 -48° |
| GRB | used from 1300 nm out; 110 nm from the line | 260/10 | 240/27 16° | 260/31 10° | 270/25 5° | 280/31 -10° | 280/35 -22° | 270/46 -37° | 290/43 -40° | 300/64 -48° |
| TVC | used from 1450 nm out; 48 nm from the line | 260/18 | 250/30 15° | 260/34 8° | 280/29 5° | 280/36 -10° | 280/37 -22° | 270/50 -37° | 290/46 -42° | 300/60 -49° |
| CLE | used from 1650 nm out; 144 nm from the line | 280/17 | 270/17 14° | 280/22 10° | 290/26 4° | 290/25 -8° | 280/31 -21° | 280/35 -36° | 280/43 -44° | 300/53 -48° |
| BUF | used from 1700 nm out; 114 nm from the line | 270/25 | 300/28 14° | 300/29 8° | 310/29 2° | 300/30 -9° | 290/33 -21° | 290/44 -37° | 290/56 -47° | 300/62 -51° |
| SYR | used from 1900 nm out; 74 nm from the line | 290/24 | 310/27 13° | 310/34 8° | 320/32 2° | 300/32 -10° | 300/40 -21° | 300/45 -37° | 310/58 -47° | 310/64 -54° |
| AVP | used from 1950 nm out; 29 nm from the line | 330/21 | 340/24 14° | 350/27 9° | 350/25 3° | 330/29 -8° | 310/31 -20° | 330/41 -36° | 330/57 -46° | 320/55 -51° |
| JFK | used from 2050 nm out; 26 nm from the line | 360/20 | 340/23 11° | 340/26 8° | 350/26 3° | 350/30 -8° | 350/36 -21° | 350/52 -36° | 350/54 -44° | 320/45 -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 |
|---|---|---|---|---|---|---|---|
| BFI Seattle, WA | departure | no report just now | 21 ft | ||||
| SFF Spokane, WA | 200 nm out, 10 nm south of the line, tower | no report just now | 1,956 ft | ||||
| GPI Kalispell, MT | 330 nm out, 23 nm north of the line, tower | no report just now | 2,976 ft | ||||
| GGW Glasgow, MT | 630 nm out, 25 nm north of the line | no report just now | 2,295 ft | ||||
| SDY Sidney, MT | 730 nm out, 3 nm northeast of the line | no report just now | 1,985 ft | ||||
| FAR Fargo, ND | 1040 nm out, 6 nm northwest of the line, tower | no report just now | 901 ft | ||||
| HYR Hayward, WI | 1260 nm out, 4 nm east of the line | no report just now | 1,215 ft | ||||
| RHI Rhinelander, WI | 1350 nm out, 3 nm north of the line | no report just now | 1,623 ft | ||||
| TVC Traverse City, MI | 1520 nm out, 4 nm northeast of the line, tower | no report just now | 623 ft | ||||
| BUF Buffalo, NY | 1840 nm out, 15 nm north of the line, tower | no report just now | 726 ft | ||||
| ELM Elmira/Corning, NY | 1930 nm out, 6 nm northeast of the line, tower | no report just now | 955 ft | ||||
| FRG Farmingdale, NY | destination | no report just now | 81 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 FRG when you get there the forecast at the estimated arrival, 10:49 pm EDT (02:49 UTC)
FRG has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8927 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local 10 nm from the route, 320 nm along the route · a VIP movement · starts Wednesday 14 October · ZSE
- 6/8923 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local 10 nm from the route, 320 nm along the route · a VIP movement · starts Wednesday 14 October · ZLC
- 5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 10 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 FRG 6:18 pm EDT (22:18 UTC) (civil twilight ends 6:45 pm EDT (22:45 UTC)). At 120 knots the arrival at FRG is after sunset there (6:18 pm EDT (22:18 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: Boeing Fld/King County International, Republic Airport.