Plan a flight · Sun 10:38 pm AKDT (06:38 UTC)

Ted Stevens Anchorage International to Seattle-Tacoma International ANC → SEA

1,256 nautical miles (1,445 statute miles) southeast on a straight line, true course 118°, about 102° magnetic at the departure end (variation 16E). At 120 knots that is 7 h 42 min at the quickest height in today's winds (34,000 ft, a 43-knot tailwind), arriving about 7:20 am PDT (14:20 UTC), after sunset at the destination. Right now ANC is VFR, wind from the south-southeast (150°) at 6 knots; SEA is VFR, wind from the east-southeast (110°) at 6 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: 15,035 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

AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 60 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 ANC.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

B77L at 8,000 ft, 14 nm west, 9:30 pm AKDT (05:30 UTC): no turbulence, no icing, remarks: during the climb. At the departure end, 14 nm west of the line.
as filed, and in English
```
ANC UA /OV TED250015/TM 0530/FL080/TP B77L/SK TOPS 050/TB NEG/IC NEG/RM DURC
```
Report
a routine report filed through ANC
Where
15 nm west (250°) of TED
Time
05:30 UTC
Height
at 8,000 ft
Aircraft
B77L
Sky
tops 5,000 ft
Turbulence
none
Icing
none
Remarks
during the climb
B737 at 5,000 ft, 7 nm southwest, 8:41 pm AKDT (04:41 UTC): light rime icing above 8,000 ft, -11 °C, remarks: during the descent. At the departure end, 7 nm southwest of the line.
as filed, and in English
```
ANC UA /OV TED230008/TM 0441/FL050/TP B737/TA M11/IC LGT RIME AT 080/RM DURD
```
Report
a routine report filed through ANC
Where
8 nm southwest (230°) of TED
Time
04:41 UTC
Height
at 5,000 ft
Aircraft
B737
Temperature
−11 °C
Icing
light rime at at 8,000 ft
Remarks
during the descent
A21N at 3,900 ft, 4 nm north, 8:31 pm AKDT (04:31 UTC): light rain, remarks: during the climb. At the departure end, 4 nm north of the line.
as filed, and in English
```
ANC UA /OV TED320005/TM 0431/FL039/TP A21N/SK BASES 025/WX -RA/RM DURC
```
Report
a routine report filed through ANC
Where
5 nm northwest (320°) of TED
Time
04:31 UTC
Height
at 3,900 ft
Aircraft
A21N
Sky
bases 2,500 ft
Weather
light rain
Remarks
during the climb
B350 at 3,000 ft, 41 nm northeast, 7:54 pm AKDT (03:54 UTC): light rime icing, overcast from 3,000 ft to 23,000 ft, -10 °C, remarks: during the climb zan. 518 nm along the route, 41 nm northeast of the line.
as filed, and in English
```
SIT UA /OV SIT/TM 0354/FL030/TP B350/SK OVC030 TOP230/TA M10/IC LGT RIME 150 30SE SIT/RM DURC/ ZAN
```
Report
a routine report filed through SIT
Where
over SIT
Time
03:54 UTC
Height
at 3,000 ft
Aircraft
B350
Sky
overcast from 3,000 ft, tops 23,000 ft
Temperature
−10 °C
Icing
light rime at 15,000 ft 30SE sit
Remarks
during the climb zan

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 5 forecast points nearest it (ANC, MDO, YAK, JNU, ANN). 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	200° at 12 kt	+4 kt		116 kt	10 h 50 min	10:28 am PDT (17:28 UTC)
5,500 ft	230° at 17 kt	−2 kt		122 kt	10 h 18 min	9:56 am PDT (16:56 UTC)
7,500 ft	230° at 20 kt	−3 kt	-2 °C	123 kt	10 h 13 min	9:51 am PDT (16:51 UTC)
9,500 ft	230° at 22 kt	−4 kt	-5 °C	124 kt	10 h 08 min	9:46 am PDT (16:46 UTC)
11,500 ft	230° at 25 kt	−4 kt	-9 °C	124 kt	10 h 08 min	9:46 am PDT (16:46 UTC)
13,500 ft	240° at 28 kt	−7 kt	-12 °C	127 kt	9 h 53 min	9:31 am PDT (16:31 UTC)
15,500 ft	240° at 31 kt	−10 kt	-16 °C	130 kt	9 h 40 min	9:18 am PDT (16:18 UTC)
17,500 ft	240° at 34 kt	−13 kt	-19 °C	133 kt	9 h 27 min	9:05 am PDT (16:05 UTC)
18,000 ft FL180	240° at 34 kt	−14 kt	-20 °C	134 kt	9 h 22 min	9:00 am PDT (16:00 UTC)
24,000 ft FL240	240° at 45 kt	−18 kt	-31 °C	138 kt	9 h 06 min	8:44 am PDT (15:44 UTC)
30,000 ft FL300	260° at 53 kt	−30 kt	-43 °C	150 kt	8 h 22 min	8:00 am PDT (15:00 UTC)
34,000 ft FL340	260° at 62 kt	−43 kt	-50 °C	163 kt	7 h 42 min	7:20 am PDT (14:20 UTC)
39,000 ft FL390	260° at 54 kt	−37 kt	-53 °C	157 kt	8 h	7:38 am PDT (14:38 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
ANC	used from 0 nm out; 25 nm from the line	200/5	220/9 -5°	210/8 -12°	210/7 -18°	220/8 -31°	240/9 -41°	210/12 -52°	240/30 -49°	240/42 -46°
MDO	used from 100 nm out; 41 nm from the line	250/15	240/14 -5°	230/15 -11°	230/15 -18°	230/14 -29°	230/29 -40°	240/50 -46°	240/53 -47°	240/58 -46°
YAK	used from 249 nm out; 91 nm from the line	210/8	240/15 -5°	250/20 -11°	250/25 -18°	240/49 -27°	240/60 -35°	240/78 -45°	240/74 -47°	240/68 -46°
JNU	used from 448 nm out; 129 nm from the line	180/24	230/31 0°	230/32 -6°	230/41 -12°	240/62 -21°	240/73 -32°	240/94 -45°	250/94 -50°	250/78 -50°
ANN	used from 548 nm out; 123 nm from the line	180/12	230/21 4°	230/24 0°	230/29 -4°	250/35 -15°	250/46 -27°	270/51 -41°	280/67 -51°	280/54 -57°

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
ANC Anchorage, AK	departure	VFR Sky: overcast at 4,300 feet	from the south-southeast (150°) at 6 knots	10+ mi	4,300 ft	151 ft	9:53 pm AKDT (05:53 UTC)
IEM Whittier, AK	40 nm out, 5 nm southeast of the line	no report just now				39 ft
WSB Steamboat Bay, AK	618 nm out, 24 nm northeast of the line	no report just now				0 ft
KWF Waterfall, AK	638 nm out, 22 nm northeast of the line	no report just now				0 ft
CYZT Port Hardy,	977 nm out, 24 nm southwest of the line	VFR Sky: a broken layer at 18,000 feet	from the west (260°) at 4 knots	15 mi	18,000 ft	71 ft	06:00 UTC
CYPW Powell River,	1086 nm out, 25 nm northeast of the line	VFR Sky: a few clouds at 25,000 feet	from the northeast (040°) at 3 knots	20 mi	none	425 ft	02:00 UTC
CYYJ Victoria,	1176 nm out, 12 nm northeast of the line, tower	VFR	from the west (270°) at 6 knots	30 mi	none	64 ft	06:00 UTC
SEA Seattle, WA	destination	VFR	from the east-southeast (110°) at 6 knots	10+ mi	none	432 ft	10:53 pm PDT (05:53 UTC)

The highest airport on this list sits at 432 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, 7:20 am PDT (14:20 UTC)

Wind from the southeast at 4 knots, visibility more than 6 miles, patches of fog, 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 ANC, the departure

From Sun 10:00 pm AKDT (06:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,500 feet, overcast at 5,000 feet
From Mon 7:00 am AKDT (15:00 UTC): wind from the south-southeast at 4 knots, visibility 6 miles, light rain showers, mist, scattered clouds at 500 feet, a broken layer at 2,500 feet
From Mon 12:00 pm AKDT (20:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, scattered clouds at 2,000 feet, a broken layer at 4,000 feet

Temporary flight restrictions on the line or within 25 nm of it

6/8772 Anchorage, AK, Tuesday, October 13, 2026 through Tuesday, October 13, 2026 Local 4 nm from the route, at the departure end · security · starts tomorrow · ZAN
6/8889 Anchorage, AK, Tuesday, October 13, 2026 through Tuesday, October 13, 2026 Local on the route, at the departure end · a VIP movement · starts tomorrow · ZAN

Daylight

Sunset at ANC 6:57 pm AKDT (02:57 UTC), at SEA 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 UTC)). At 120 knots the arrival at SEA is before sunrise there (7:23 am PDT (14:23 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, Alaska · loop National Weather Service

Radar now, the Pacific Northwest · 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: Ted Stevens Anchorage International, Seattle-Tacoma International.