Philadelphia International to Seattle-Tacoma International PHL → SEA
2,061 nautical miles (2,372 statute miles) northwest on a straight line, true course 299°, about 311° magnetic at the departure end (variation 12W). At 120 knots that is 17 h 02 min at the quickest height in today's winds (4,500 ft, a 1-knot tailwind), arriving about 5:41 pm PDT (00:41 UTC). Right now PHL is marginal VFR, wind from the northeast (040°) at 11 knots; SEA is VFR, wind from the east-southeast (120°) at 7 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: 2,725 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 E25E: thunderstorms (a convective SIGMET) up to 35,000 ft, moving from the southwest at 20 knots, until 4:55 am EDT (08:55 UTC). Over the first 30 nm of the route.
as issued
WSUS31 KKCI 120655 MKCE WST 120655 CONVECTIVE SIGMET 25E VALID UNTIL 0855Z RI NY NJ PA DE MD AND MA RI NJ NY CT CSTL WTRS FROM 30SSE PVD-60SSE ACK-110SSE HTO-40N SBY-30SSW ETX-30SSE PVD AREA EMBD TS MOV FROM 24020KT. TOPS TO FL350.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist), from 2:00 am EDT (06:00 UTC). Over the first 508 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft, from 2:00 am EDT (06:00 UTC). Over the first 159 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist), from 2:00 am EDT (06:00 UTC). Over the route from 80 to 219 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), from 2:00 am EDT (06:00 UTC). Over the route from 657 to 777 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), from 2:00 am EDT (06:00 UTC). Over the route from 966 to 1793 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft, from 2:00 am EDT (06:00 UTC). Over the route from 1384 to 1384 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist), from 2:00 am EDT (06:00 UTC). Over the route from 1514 to 1813 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft, from 2:00 am EDT (06:00 UTC). Over the route from 1593 to 1783 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft, from 2:00 am EDT (06:00 UTC). 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 PHL.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- C560 at 13,000 ft, 2 nm northeast, 2:38 am EDT (06:38 UTC): moderate turbulence, overcast above 19,000 ft, heavy rain, remarks: during the descent. At the departure end, 2 nm northeast of the line.
as filed, and in English
PHL UA /OV 20 NW PHL/TM 0638/FL130 /TP C560/SK OVC190/WX +RA/TB MOD/RM DURD
- Report
- a routine report filed through PHL
- Where
- 20 northwest phl
- Time
- 06:38 UTC
- Height
- at 13,000 ft
- Aircraft
- C560
- Sky
- overcast from 19,000 ft
- Weather
- heavy rain
- Turbulence
- moderate
- Remarks
- during the descent
- A333 descending, 35 nm southwest, 1:44 am EDT (05:44 UTC): a routine report with nothing remarked on. 388 nm along the route, 35 nm southwest of the line.
as filed, and in English
DTW UA /OV DTW/TM 0544/FLDURD/TP A333/SK TOPS 025
- Report
- a routine report filed through DTW
- Where
- over DTW
- Time
- 05:44 UTC
- Height
- during the descent
- Aircraft
- A333
- Sky
- tops 2,500 ft
- B739 descending, 35 nm southwest, 12:54 am EDT (04:54 UTC): a routine report with nothing remarked on. 388 nm along the route, 35 nm southwest of the line.
as filed, and in English
DTW UA /OV DTW/TM 0454/FLDURD/TP B739/SK BASES 011
- Report
- a routine report filed through DTW
- Where
- over DTW
- Time
- 04:54 UTC
- Height
- during the descent
- Aircraft
- B739
- Sky
- bases 1,100 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 westbound cruising heights for this course (VFR: even 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 (ACY, AVP, PSB, AGC, CLE, MKG, GRB, LSE, MSP, AXN, ABR, DIK, MLS, GGW, GTF, GPI, GEG, YKM, SEA). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 4,500 ft | 180° at 2 kt | −1 kt | 3 °C | 121 kt | 17 h 02 min | 5:41 pm PDT (00:41 UTC) |
| 6,500 ft | 240° at 2 kt | +1 kt | 9 °C | 119 kt | 17 h 19 min | 5:58 pm PDT (00:58 UTC) |
| 8,500 ft | 240° at 4 kt | +3 kt | 6 °C | 117 kt | 17 h 37 min | 6:16 pm PDT (01:16 UTC) |
| 10,500 ft | 230° at 7 kt | +5 kt | 2 °C | 115 kt | 17 h 55 min | 6:34 pm PDT (01:34 UTC) |
| 12,500 ft | 240° at 10 kt | +7 kt | -1 °C | 113 kt | 18 h 14 min | 6:53 pm PDT (01:53 UTC) |
| 14,500 ft | 250° at 13 kt | +11 kt | -5 °C | 109 kt | 18 h 54 min | 7:33 pm PDT (02:33 UTC) |
| 16,500 ft | 250° at 17 kt | +15 kt | -9 °C | 105 kt | 19 h 38 min | 8:17 pm PDT (03:17 UTC) |
| 18,000 ft FL180 | 260° at 19 kt | +18 kt | -12 °C | 102 kt | 20 h 12 min | 8:51 pm PDT (03:51 UTC) |
| 24,000 ft FL240 | 250° at 22 kt | +20 kt | -23 °C | 100 kt | 20 h 37 min | 9:16 pm PDT (04:16 UTC) |
| 30,000 ft FL300 | 260° at 26 kt | +25 kt | -37 °C | 95 kt | 21 h 42 min | 10:21 pm PDT (05:21 UTC) |
| 34,000 ft FL340 | 260° at 36 kt | +34 kt | -43 °C | 86 kt | 23 h 58 min | 12:37 am PDT (07:37 UTC) |
| 39,000 ft FL390 | 260° at 46 kt | +45 kt | -48 °C | 75 kt | 27 h 29 min | 4:08 am PDT (11:08 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ACY | used from 0 nm out; 64 nm from the line | 220/19 | 220/18 14° | 210/36 9° | 210/35 5° | 220/36 -8° | 240/49 -21° | 220/90 -31° | 230/103 -40° | 230/81 -50° |
| AVP | used from 50 nm out; 68 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° |
| PSB | used from 100 nm out; 20 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° | |
| AGC | used from 199 nm out; 75 nm from the line | 350/14 | 330/20 11° | 340/18 8° | 330/17 3° | 340/22 -11° | 340/31 -22° | 330/33 -36° | 300/34 -41° | 300/35 -47° |
| CLE | used from 249 nm out; 63 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° |
| MKG | used from 398 nm out; 112 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° |
| GRB | used from 598 nm out; 20 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° |
| LSE | used from 697 nm out; 69 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° |
| MSP | used from 797 nm out; 41 nm from the line | 230/26 | 240/30 17° | 240/24 12° | 250/22 5° | 250/35 -10° | 260/36 -21° | 250/41 -36° | 250/49 -45° | 260/58 -52° |
| AXN | used from 896 nm out; 33 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° |
| ABR | used from 1046 nm out; 52 nm from the line | 070/14 | 250/10 17° | 270/16 11° | 260/28 5° | 260/36 -10° | 260/41 -22° | 270/33 -37° | 260/42 -42° | 260/50 -48° |
| DIK | used from 1145 nm out; 96 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° | |
| MLS | used from 1344 nm out; 51 nm from the line | 150/23 2° | 190/29 4° | 210/44 2° | 220/32 -10° | 210/36 -21° | 200/48 -37° | 230/63 -40° | 240/71 -47° | |
| GGW | used from 1394 nm out; 56 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° | |
| GTF | used from 1494 nm out; 99 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° | |
| GPI | used from 1693 nm out; 44 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° | |
| GEG | used from 1793 nm out; 50 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° | |
| YKM | used from 1942 nm out; 64 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° |
| SEA | used from 1992 nm out; 45 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° |
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 |
|---|---|---|---|---|---|---|---|
| PHL Philadelphia, PA | departure | marginal VFR Sky: scattered clouds at 600 feet, a broken layer at 1,300 feet, overcast at 2,800 feet Weather: light rain, mist | from the northeast (040°) at 11 knots | 5 mi | 1,300 ft | 35 ft | 3:17 am EDT (07:17 UTC) |
| UNV State College, PA | 129 nm out, 5 nm west of the line, tower | IFR Sky: a broken layer at 900 feet, overcast at 1,900 feet Weather: light drizzle, mist | calm | 2.5 mi | 900 ft | 1,231 ft | 07:15 UTC |
| PTK Pontiac, MI | 408 nm out, 11 nm south of the line, tower | IFR Sky: overcast at 600 feet | from the west (260°) at 5 knots | 10+ mi | 600 ft | 980 ft | 06:53 UTC |
| FNT Flint, MI | 428 nm out, 3 nm east of the line, tower | low IFR Sky: a broken layer at 400 feet | from the south-southwest (210°) at 6 knots | 8 mi | 400 ft | 782 ft | 06:53 UTC |
| ATW Appleton, WI | 647 nm out, 3 nm south of the line, tower | VFR | from the south-southwest (200°) at 6 knots | 10+ mi | none | 918 ft | 07:35 UTC |
| STC St Cloud, MN | 896 nm out, 2 nm southeast of the line, tower | VFR | from the north (350°) at 5 knots | 10+ mi | none | 1,030 ft | 06:53 UTC |
| BIS Bismarck, ND | 1185 nm out, 7 nm northeast of the line, tower | IFR Sky: overcast at 800 feet Weather: light rain | from the east-northeast (060°) at 8 knots | 10+ mi | 800 ft | 1,661 ft | 06:52 UTC |
| GDV Glendive, MT | 1354 nm out, 4 nm east of the line | low IFR Sky: overcast at 400 feet Weather: rain | from the northeast (050°) at 12 knots | 8 mi | 400 ft | 2,458 ft | 06:56 UTC |
| GTF Great Falls, MT | 1613 nm out, 7 nm southwest 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 |
| THM Thompson Falls, MT | 1773 nm out, 6 nm southwest of the line | no report just now | 2,467 ft | ||||
| GEG Spokane, WA | 1872 nm out, 5 nm east of the line, tower | VFR Sky: a few clouds at 7,000 feet, a broken layer at 10,000 feet | from the north-northeast (030°) at 8 knots | 10+ mi | 10,000 ft | 2,385 ft | 06:53 UTC |
| SEA Seattle, WA | destination | VFR | from the east-southeast (120°) at 7 knots | 10+ mi | none | 432 ft | 11:53 pm PDT (06:53 UTC) |
The highest airport on this list sits at 3,680 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SEA when you get there the forecast at the estimated arrival, 5:41 pm PDT (00:41 UTC)
Wind from the west at 6 knots, visibility more than 6 miles, clear skies VFR
The whole forecast for SEA
- From Sun 11:00 pm PDT (06:00 UTC): wind from the east-northeast at 6 knots, visibility more than 6 miles, clear skies
- From Mon 3:00 am PDT (10:00 UTC): wind from the southeast at 4 knots, 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 4 knots, visibility more than 6 miles, clear skies
- From Mon 11:00 am PDT (18:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, clear skies
- From Mon 8:00 pm PDT (03:00 UTC): wind from the south at 4 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
The forecast for PHL, the departure
- From Mon 2:00 am EDT (06:00 UTC): wind from the north-northeast at 8 knots, visibility 5 miles, light rain showers, mist, thunderstorms nearby, overcast at 700 feet (thunderheads)
- From Mon 7:00 am EDT (11:00 UTC): wind from the north at 10 knots, visibility 5 miles, mist, overcast at 800 feet
- From Mon 10:00 am EDT (14:00 UTC): wind from the north at 10 knots, gusting to 15, visibility 6 miles, mist, a broken layer at 2,500 feet
- From Mon 12:00 pm EDT (16:00 UTC): wind from the north-northwest at 10 knots, gusting to 15, visibility more than 6 miles, scattered clouds at 5,000 feet
- From Mon 6:00 pm EDT (22:00 UTC): wind from the northwest at 8 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Mon 9:00 pm EDT (01:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 25,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 11 nm from the route, 259 nm along the route · a VIP movement · today · ZOB
- 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 11 nm from the route, 259 nm along the route · a VIP movement · today · ZOB
- 6/6656 ANOKA, MN, Monday, October 5, 2026 through Monday, October 19, 2026 Local 13 nm from the route, 856 nm along the route · security · until 19 October · ZMP
Daylight
Sunset at PHL 6:26 pm EDT (22:26 UTC), at SEA 6:25 pm PDT (01:25 UTC) (civil twilight ends 6:56 pm PDT (01:56 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: Philadelphia International, Seattle-Tacoma International.