Seattle-Tacoma International to Phoenix Sky Harbor International SEA → PHX
962 nautical miles (1,107 statute miles) southeast on a straight line, true course 147°, about 131° magnetic at the departure end (variation 16E). At 120 knots that is 7 h 42 min at the quickest height in today's winds (24,000 ft, a 5-knot tailwind), arriving about 11:50 am MST (18:50 UTC). Right now SEA is VFR, wind from the southeast (130°) at 6 knots; PHX is VFR, wind from the south (170°) 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: 14,355 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 W22W: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the south at 35 knots, until 5:55 am PDT (12:55 UTC). Over the route from 665 to 734 nm out.
as issued
WSUS33 KKCI 121055 MKCW WST 121055 CONVECTIVE SIGMET 22W VALID UNTIL 1255Z AZ UT NV FROM 40W DTA-40WNW HVE-20SSE BCE-50NE LAS-70ENE BTY-40W DTA AREA TS MOV FROM 20035KT. TOPS TO FL300.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 30 to 367 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 774 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 466 to 734 nm out.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 585 to 932 nm out.
- AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 784 to 913 nm out.
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
No pilot reports within 50 nautical miles of the line in the last three hours.
Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 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 9 forecast points nearest it (SEA, YKM, RDM, LKV, BAM, ELY, LAS, PRC, PHX). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 7,500 ft | 220° at 10 kt | +4 kt | 0 °C | 116 kt | 8 h 18 min | 12:26 pm MST (19:26 UTC) |
| 9,500 ft | 230° at 9 kt | +3 kt | -2 °C | 117 kt | 8 h 13 min | 12:21 pm MST (19:21 UTC) |
| 11,500 ft | 240° at 10 kt | +1 kt | -6 °C | 119 kt | 8 h 05 min | 12:13 pm MST (19:13 UTC) |
| 13,500 ft | 240° at 11 kt | 0 | -9 °C | 120 kt | 8 h 01 min | 12:09 pm MST (19:09 UTC) |
| 15,500 ft | 250° at 12 kt | 0 | -12 °C | 120 kt | 8 h 01 min | 12:09 pm MST (19:09 UTC) |
| 17,500 ft | 250° at 12 kt | 0 | -15 °C | 120 kt | 8 h 01 min | 12:09 pm MST (19:09 UTC) |
| 18,000 ft FL180 | 250° at 13 kt | 0 | -16 °C | 120 kt | 8 h 01 min | 12:09 pm MST (19:09 UTC) |
| 24,000 ft FL240 | 260° at 17 kt | −5 kt | -25 °C | 125 kt | 7 h 42 min | 11:50 am MST (18:50 UTC) |
| 30,000 ft FL300 | 250° at 27 kt | −4 kt | -33 °C | 124 kt | 7 h 45 min | 11:53 am MST (18:53 UTC) |
| 34,000 ft FL340 | 240° at 36 kt | +2 kt | -38 °C | 118 kt | 8 h 09 min | 12:17 pm MST (19:17 UTC) |
| 39,000 ft FL390 | 230° at 38 kt | +10 kt | -43 °C | 110 kt | 8 h 45 min | 12:53 pm MST (19:53 UTC) |
Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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 | 350/5 | 010/6 0° | 010/9 -4° | 010/27 -6° | 010/51 -15° | 360/58 -26° | 360/60 -41° | 350/55 -48° | 340/30 -45° |
| YKM | used from 50 nm out; 34 nm from the line | 360/6 | 360/11 -1° | 030/20 -7° | 040/21 -11° | 020/55 -18° | 010/84 -26° | 010/79 -40° | 010/45 -42° | 350/23 -42° |
| RDM | used from 149 nm out; 63 nm from the line | 360/14 -2° | 020/25 -8° | 360/34 -13° | 360/75 -16° | 360/88 -25° | 360/80 -39° | 350/47 -42° | 360/11 -43° | |
| LKV | used from 298 nm out; 100 nm from the line | 010/10 -8° | 360/20 -11° | 360/58 -19° | 360/92 -25° | 350/69 -37° | 310/34 -37° | 240/26 -41° | ||
| BAM | used from 347 nm out; 102 nm from the line | 280/9 -2° | 260/18 -8° | 190/47 -19° | 200/50 -29° | 210/56 -29° | 220/54 -34° | 220/45 -42° | ||
| ELY | used from 546 nm out; 40 nm from the line | 210/34 1° | 220/40 -4° | 220/39 -17° | 210/51 -24° | 220/65 -30° | 220/60 -37° | 220/56 -44° | ||
| LAS | used from 694 nm out; 73 nm from the line | 210/20 8° | 210/29 4° | 200/32 -3° | 200/51 -15° | 210/64 -21° | 220/70 -30° | 220/66 -38° | 220/55 -44° | |
| PRC | used from 794 nm out; 71 nm from the line | 200/37 6° | 200/35 0° | 220/60 -11° | 220/71 -20° | 220/88 -29° | 220/98 -35° | 220/94 -45° | ||
| PHX | used from 942 nm out; 10 nm from the line | 190/15 | 210/25 12° | 200/34 4° | 200/34 2° | 220/58 -9° | 220/75 -19° | 220/91 -28° | 220/100 -35° | 220/95 -47° |
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 | VFR | from the southeast (130°) at 6 knots | 10+ mi | none | 432 ft | 3:53 am PDT (10:53 UTC) |
| PLU Puyallup, WA | 20 nm out, 11 nm southwest of the line | VFR Weather: light drizzle | calm | 10+ mi | none | 537 ft | 10:55 UTC |
| DLS The Dalles, OR | 119 nm out, 19 nm southwest of the line | VFR Sky: overcast at 11,000 feet | calm | 10+ mi | 11,000 ft | 246 ft | 10:53 UTC |
| BNO Burns, OR | 268 nm out, 3 nm south of the line | VFR | from the northwest (320°) at 7 knots | 10+ mi | none | 4,148 ft | 10:53 UTC |
| REO Rome, OR | 347 nm out, 10 nm northeast of the line | reported, no category | from the southeast (140°) at 8 knots | none | 4,053 ft | 10:52 UTC | |
| BAM Battle Mountain, NV | 476 nm out, 9 nm west of the line | VFR Sky: a broken layer at 10,000 feet | from the north-northwest (340°) at 7 knots | 10+ mi | 10,000 ft | 4,536 ft | 10:55 UTC |
| DVT Phoenix, AZ | 942 nm out, 6 nm southeast of the line, tower | VFR Sky: a broken layer at 9,000 feet | from the southeast (140°) at 9 knots | 10+ mi | 9,000 ft | 1,478 ft | 10:53 UTC |
| PHX Phoenix, AZ | destination | VFR Sky: scattered clouds at 6,000 feet, scattered clouds at 9,000 feet | from the south (170°) at 7 knots | 10+ mi | none | 1,134 ft | 3:51 am MST (10:51 UTC) |
The highest airport on this list sits at 4,536 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At PHX when you get there the forecast at the estimated arrival, 11:50 am MST (18:50 UTC)
Wind from the south at 11 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 7,000 feet VFR
The whole forecast for PHX
- From Mon 2:00 am MST (09:00 UTC): wind from the east-southeast at 7 knots, visibility more than 6 miles, a few clouds at 4,000 feet, scattered clouds at 7,000 feet
- From Mon 9:00 am MST (16:00 UTC): wind from the south at 11 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 7,000 feet
- From Mon 1:00 pm MST (20:00 UTC): wind from the southwest at 14 knots, gusting to 23, visibility more than 6 miles, scattered clouds at 5,000 feet, a broken layer at 7,000 feet
- From Mon 6:00 pm MST (01:00 UTC): wind from the west at 9 knots, visibility more than 6 miles, scattered clouds at 5,000 feet, a broken layer at 7,000 feet
- From Mon 10:00 pm MST (05:00 UTC): wind from the east-southeast at 7 knots, visibility more than 6 miles, showers nearby, scattered clouds at 5,000 feet, a broken layer at 7,000 feet
The forecast for SEA, the departure
- From Mon 2:00 am PDT (09:00 UTC): wind light and variable, visibility more than 6 miles, 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
Temporary flight restrictions on the line or within 25 nm of it
No temporary flight restriction on or near this route right now.
Daylight
Sunset at SEA 6:25 pm PDT (01:25 UTC), at PHX 5:57 pm MST (00:57 UTC) (civil twilight ends 6:22 pm MST (01:22 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, Phoenix Sky Harbor International.
