Seattle-Tacoma International to Denver International SEA → DEN
888 nautical miles (1,022 statute miles) southeast on a straight line, true course 114°, about 098° magnetic at the departure end (variation 16E). At 120 knots that is 6 h 41 min at the quickest height in today's winds (39,000 ft, a 13-knot tailwind), arriving about 4:05 am MDT (10:05 UTC), after sunset at the destination. Right now SEA is VFR, wind from the north-northeast (030°) at 8 knots; DEN is VFR, wind from the south-southwest (200°) at 16 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: 13,321 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 first 150 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 20,000 ft. Over the route from 60 to 329 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 190 to 739 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 270 to 429 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 339 to 729 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 369 to 509 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 359 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 339 nm of the route.
- AIRMET TANGO 1W: 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 559 to 858 nm out.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 649 to 699 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
- CRJ2 at 19,000 ft, 10 nm northeast, 5:47 pm PDT (00:47 UTC): moderate chop turbulence, remarks: ZDVWC-13. 809 nm along the route, 10 nm northeast of the line.
as filed, and in English
EGE UA /OV RLG010052/TM 0047/FL190/TP CRJ2/TB COSN MOD CHOP/RM ZDVWC-13
- Report
- a routine report filed through EGE
- Where
- 52 nm north (010°) of RLG
- Time
- 00:47 UTC
- Height
- at 19,000 ft
- Aircraft
- CRJ2
- Turbulence
- cosn moderate chop
- Remarks
- ZDVWC-13
- B738 at 23,000 ft, 12 nm south, 7:34 pm PDT (02:34 UTC): moderate turbulence, remarks: during the climb ZDVWC-05. At the destination end, 12 nm south of the line.
as filed, and in English
DEN UA /OV DVV270030/TM 0234/FL230/TP B738/TB MOD /RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 30 nm west (270°) of DVV
- Time
- 02:34 UTC
- Height
- at 23,000 ft
- Aircraft
- B738
- Turbulence
- moderate
- Remarks
- during the climb ZDVWC-05
- BCS1 at 24,000 ft, 12 nm south, 6:30 pm PDT (01:30 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the climb ZDVWC-05. At the destination end, 12 nm south of the line.
as filed, and in English
DEN UA /OV DVV270030/TM 0130/FL240/TP BCS1/TB MOD 220-240/RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 30 nm west (270°) of DVV
- Time
- 01:30 UTC
- Height
- at 24,000 ft
- Aircraft
- BCS1
- Turbulence
- moderate from 22,000 ft to 24,000 ft
- Remarks
- during the climb ZDVWC-05
- GLF4 at 25,000 ft, 35 nm southwest, 7:05 pm PDT (02:05 UTC): moderate turbulence, remarks: during the climb ZDVWC-05. At the destination end, 35 nm southwest of the line.
as filed, and in English
DEN UA /OV FQF250040/TM 0205/FL250/TP GLF4/TB MOD /RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 40 nm west (250°) of FQF
- Time
- 02:05 UTC
- Height
- at 25,000 ft
- Aircraft
- GLF4
- Turbulence
- moderate
- Remarks
- during the climb ZDVWC-05
- SB20 at 16,000 ft, 41 nm northeast, 6:52 pm PDT (01:52 UTC): remarks: zse. At the departure end, 41 nm northeast of the line.
as filed, and in English
PAE UA /OV PAE075045/TM 0152/FL160/TP SB20/SK TOP120/RM ZSE
- Report
- a routine report filed through PAE
- Where
- 45 nm east (075°) of PAE
- Time
- 01:52 UTC
- Height
- at 16,000 ft
- Aircraft
- SB20
- Sky
- TOP120
- Remarks
- zse
- A321 at 13,500 ft, 20 nm south, 6:54 pm PDT (01:54 UTC): remarks: zse. 40 nm along the route, 20 nm south of the line.
as filed, and in English
SEA UA /OV SEA120045/TM 0154/FL135/TP A321/SK TOP130/RM ZSE
- Report
- a routine report filed through SEA
- Where
- 45 nm southeast (120°) of SEA
- Time
- 01:54 UTC
- Height
- at 13,500 ft
- Aircraft
- A321
- Sky
- TOP130
- Remarks
- zse
- PC12 at 13,000 ft, 20 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. 40 nm along the route, 20 nm south of the line.
as filed, and in English
YKM UA /OV YKM270050/TM 0042/FL130/TP PC12/SK TOP130/RM -ZSE
- Report
- a routine report filed through YKM
- Where
- 50 nm west (270°) of YKM
- Time
- 00:42 UTC
- Height
- at 13,000 ft
- Aircraft
- PC12
- Sky
- TOP130
- Remarks
- zse
- PC12 at 15,000 ft, 20 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. 40 nm along the route, 20 nm south of the line.
as filed, and in English
YKM UA /OV YKM270050/TM 0042/FL150/TP PC12/SK TOP130/RM -ZSE
- Report
- a routine report filed through YKM
- Where
- 50 nm west (270°) of YKM
- Time
- 00:42 UTC
- Height
- at 15,000 ft
- Aircraft
- PC12
- Sky
- TOP130
- Remarks
- zse
- C337 at 12,000 ft, 33 nm southwest, 6:18 pm PDT (01:18 UTC): light rime icing, -12 °C, remarks: zse. 100 nm along the route, 33 nm southwest of the line.
as filed, and in English
YKM UA /OV YKM155020/TM 0118/FL120/TP C337/TA M12/IC LGT RIME/RM ZSE
- Report
- a routine report filed through YKM
- Where
- 20 nm southeast (155°) of YKM
- Time
- 01:18 UTC
- Height
- at 12,000 ft
- Aircraft
- C337
- Temperature
- −12 °C
- Icing
- light rime
- Remarks
- zse
- PC12 at 13,500 ft, 18 nm northeast, 6:08 pm PDT (01:08 UTC): no turbulence, a trace of icing, overcast from 9,000 ft to 13,500 ft, -10 °C. 140 nm along the route, 18 nm northeast of the line.
as filed, and in English
PSC UA /OV PSC360025/TM 0108/FL135/TP PC12/SK OVC090-TOP135/TA M10/TB NEG /IC TRACE RM 135-090
- Report
- a routine report filed through PSC
- Where
- 25 nm north (360°) of PSC
- Time
- 01:08 UTC
- Height
- at 13,500 ft
- Aircraft
- PC12
- Sky
- overcast from 9,000 ft, tops 13,500 ft
- Temperature
- −10 °C
- Turbulence
- none
- Icing
- trace remarks from 13,500 ft to 9,000 ft
- PC12 at 6,000 ft, 17 nm south, 5:56 pm PDT (00:56 UTC): overcast above 6,000 ft. 180 nm along the route, 17 nm south of the line.
as filed, and in English
ALW UA /OV ALW200015/TM 0056/FL060/TP PC12/SK OVC060
- Report
- a routine report filed through ALW
- Where
- 15 nm south (200°) of ALW
- Time
- 00:56 UTC
- Height
- at 6,000 ft
- Aircraft
- PC12
- Sky
- overcast from 6,000 ft
- A320 descending, 31 nm northeast, 5:54 pm PDT (00:54 UTC): overcast above 7,500 ft, remarks: braking action good during the descent runway 19. 539 nm along the route, 31 nm northeast of the line.
as filed, and in English
JAC UA /OV JAC/TM 0054/FLUNKN/TP A320/SK OVC075/RM BRAKING ACTION GOOD DURD RY19
- Report
- a routine report filed through JAC
- Where
- over JAC
- Time
- 00:54 UTC
- Height
- height not given
- Aircraft
- A320
- Sky
- overcast from 7,500 ft
- Remarks
- braking action good during the descent runway 19
- UAL2395 at 37,000 ft, 29 nm southwest, 5:58 pm PDT (00:58 UTC): no turbulence, wind 240° at 70 knots. 669 nm along the route, 29 nm southwest of the line.
as filed, and in English
ARP UAL2395 4135N 10900W 0058 F370 240/070KT TB NONE SK CLEAR IC NONE
- Report
- a routine report filed through ARP
- C56X at 13,000 ft, 43 nm northeast, 6:33 pm PDT (01:33 UTC): light chop turbulence, remarks: zdvwc. 799 nm along the route, 43 nm northeast of the line.
as filed, and in English
LAR UA /OV LAR/TM 0133/FL130/TP C56X/SK BASE160/TB OCNL CONS LGT CHOP/RM ZDVWC
- Report
- a routine report filed through LAR
- Where
- over LAR
- Time
- 01:33 UTC
- Height
- at 13,000 ft
- Aircraft
- C56X
- Sky
- BASE160
- Turbulence
- occasional continuous light chop
- Remarks
- zdvwc
7 more routine reports are on the map.
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 9 forecast points nearest it (SEA, YKM, LWS, BOI, DLN, PIH, LND, RKS, DEN). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 5,500 ft | 060° at 7 kt | +4 kt | 2 °C | 116 kt | 7 h 39 min | 5:03 am MDT (11:03 UTC) |
| 7,500 ft | 200° at 7 kt | +3 kt | 0 °C | 117 kt | 7 h 35 min | 4:59 am MDT (10:59 UTC) |
| 9,500 ft | 220° at 8 kt | 0 | -2 °C | 120 kt | 7 h 24 min | 4:48 am MDT (10:48 UTC) |
| 11,500 ft | 230° at 13 kt | −3 kt | -4 °C | 123 kt | 7 h 13 min | 4:37 am MDT (10:37 UTC) |
| 13,500 ft | 230° at 16 kt | −3 kt | -7 °C | 123 kt | 7 h 13 min | 4:37 am MDT (10:37 UTC) |
| 15,500 ft | 220° at 19 kt | −1 kt | -10 °C | 121 kt | 7 h 20 min | 4:44 am MDT (10:44 UTC) |
| 17,500 ft | 210° at 22 kt | 0 | -14 °C | 120 kt | 7 h 24 min | 4:48 am MDT (10:48 UTC) |
| 18,000 ft FL180 | 210° at 23 kt | +1 kt | -15 °C | 119 kt | 7 h 28 min | 4:52 am MDT (10:52 UTC) |
| 24,000 ft FL240 | 210° at 28 kt | +1 kt | -26 °C | 119 kt | 7 h 28 min | 4:52 am MDT (10:52 UTC) |
| 30,000 ft FL300 | 220° at 34 kt | −6 kt | -32 °C | 126 kt | 7 h 03 min | 4:27 am MDT (10:27 UTC) |
| 34,000 ft FL340 | 230° at 41 kt | −10 kt | -37 °C | 130 kt | 6 h 50 min | 4:14 am MDT (10:14 UTC) |
| 39,000 ft FL390 | 230° at 43 kt | −13 kt | -42 °C | 133 kt | 6 h 41 min | 4:05 am MDT (10:05 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; 22 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° |
| LWS | used from 150 nm out; 62 nm from the line | 070/10 | 080/12 -2° | 030/12 -6° | 080/7 -10° | 170/34 -21° | 160/46 -32° | 200/33 -35° | 220/22 -35° | 230/18 -38° |
| BOI | used from 299 nm out; 94 nm from the line | 300/7 2° | 280/5 -4° | 210/16 -9° | 210/60 -20° | 210/75 -29° | 210/63 -32° | 220/64 -32° | 220/54 -39° | |
| DLN | used from 349 nm out; 86 nm from the line | 090/6 -6° | 240/22 -4° | 210/34 -16° | 210/62 -25° | 210/66 -34° | 210/82 -36° | 220/77 -42° | ||
| PIH | used from 449 nm out; 51 nm from the line | L/V | 240/13 1° | 240/15 -3° | 210/42 -15° | 200/70 -25° | 220/74 -29° | 220/71 -36° | 220/62 -43° | |
| LND | used from 549 nm out; 74 nm from the line | 200/23 6° | 220/31 1° | 220/39 -11° | 230/39 -23° | 220/51 -28° | 220/66 -37° | 230/68 -45° | ||
| RKS | used from 649 nm out; 31 nm from the line | 200/41 | 220/44 1° | 220/35 -11° | 220/46 -24° | 210/53 -27° | 220/62 -35° | 230/61 -44° | ||
| DEN | used from 799 nm out; 65 nm from the line | 240/21 14° | 250/44 6° | 220/49 -8° | 220/49 -21° | 230/54 -30° | 240/57 -35° | 240/49 -45° |
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 Sky: a few clouds at 3,000 feet | from the north-northeast (030°) at 8 knots | 10+ mi | none | 432 ft | 7:53 pm PDT (02:53 UTC) |
| ELN Ellensburg, WA | 80 nm out, 9 nm north of the line | VFR Sky: overcast at 10,000 feet | from the east-southeast (110°) at 5 knots | 10+ mi | 10,000 ft | 1,763 ft | 02:53 UTC |
| PSC Pasco, WA | 150 nm out, 8 nm southwest of the line, tower | VFR Sky: a broken layer at 10,000 feet, overcast at 11,000 feet | from the north-northwest (340°) at 8 knots | 10+ mi | 10,000 ft | 410 ft | 02:53 UTC |
| ALW Walla Walla, WA | 180 nm out, 5 nm southeast of the line, tower | VFR Sky: a broken layer at 6,000 feet, overcast at 7,500 feet | calm | 10+ mi | 6,000 ft | 1,194 ft | 02:53 UTC |
| MYL Mc Call, ID | 299 nm out, 22 nm southwest of the line | VFR Sky: overcast at 3,300 feet | from the west-northwest (290°) at 4 knots | 10+ mi | 3,300 ft | 5,024 ft | 02:51 UTC |
| LLJ Challis, ID | 379 nm out, 1 nm south of the line | marginal VFR Sky: scattered clouds at 1,700 feet, overcast at 2,400 feet Weather: light rain | from the north-northwest (330°) at 8 knots | 10+ mi | 2,400 ft | 5,075 ft | 02:55 UTC |
| IDA Idaho Falls, ID | 489 nm out, 6 nm south of the line, tower | IFR Sky: a broken layer at 900 feet, overcast at 2,700 feet | from the north (360°) at 5 knots | 10+ mi | 900 ft | 4,743 ft | 03:15 UTC |
| BPI Big Piney, WY | 589 nm out, 8 nm south of the line | VFR Sky: scattered clouds at 7,000 feet, a broken layer at 8,000 feet, a broken layer at 11,000 feet | from the west-southwest (240°) at 13 knots | 10+ mi | 8,000 ft | 6,993 ft | 02:53 UTC |
| DWX Dixon, WY | 739 nm out, 18 nm south of the line | VFR Sky: a broken layer at 7,500 feet, overcast at 9,000 feet | from the south-southeast (150°) at 13 knots, gusting to 23 | 10+ mi | 7,500 ft | 6,548 ft | 03:15 UTC |
| BJC Denver, CO | 868 nm out, 10 nm southwest of the line, tower | VFR | from the south-southwest (200°) at 7 knots | 10+ mi | none | 5,673 ft | 03:15 UTC |
| DEN Denver, CO | destination | VFR Sky: a few clouds at 14,000 feet, a broken layer at 22,000 feet | from the south-southwest (200°) at 16 knots | 10+ mi | 22,000 ft | 5,433 ft | 8:53 pm MDT (02:53 UTC) |
The highest airport on this list sits at 6,993 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At DEN when you get there the forecast at the estimated arrival, 4:05 am MDT (10:05 UTC)
Wind from the south at 11 knots, visibility more than 6 miles, a few clouds at 22,000 feet VFR
The whole forecast for DEN
- From Sun 9:00 pm MDT (03:00 UTC): wind from the south at 14 knots, gusting to 23, visibility more than 6 miles, a few clouds at 14,000 feet, a broken layer at 22,000 feet
- At times between Sun 9:00 pm MDT (03:00 UTC) and 12:00 am MDT (06:00 UTC): wind from the south-southwest at 25 knots, gusting to 37
- From Mon 1:00 am MDT (07:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, a few clouds at 22,000 feet
- From Mon 9:00 am MDT (15:00 UTC): wind from the southwest at 14 knots, gusting to 21, visibility more than 6 miles, clear skies
- From Mon 4:00 pm MDT (22:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, clear skies
- From Mon 7:00 pm MDT (01:00 UTC): wind from the northeast at 8 knots, visibility more than 6 miles, clear skies
The forecast for SEA, the departure
- From Sun 8:00 pm PDT (03:00 UTC): wind from the north 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 northwest at 5 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 6:27 pm PDT (01:27 UTC), at DEN 6:24 pm MDT (00:24 UTC) (civil twilight ends 6:51 pm MDT (00:51 UTC)). At 120 knots the arrival at DEN is before sunrise there (7:05 am MDT (13:05 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, Denver International.