Plan a flight · Sun 4:31 pm PDT (23:31 UTC)

Seattle Paine Field International to Northern Colorado Regional PAE → FNL

865 nautical miles (995 statute miles) southeast on a straight line, true course 115°, about 099° magnetic at the departure end (variation 16E). At 120 knots that is 6 h 05 min at the quickest height in today's winds (39,000 ft, a 22-knot tailwind), arriving about 11:36 pm MDT (05:36 UTC), after sunset at the destination. Right now PAE is VFR, wind from the northwest (320°) at 11 knots; FNL is VFR, wind from the north-northwest (330°) 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: 2 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 25,000 ft to 39,000 ft. Over the first 0 nm of the route.
AIRMET ZULU 2C: moderate icing up to 14,000 ft. Over the route from 119 to 328 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 189 to 805 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 597 nm of the route.
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 288 to 616 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 437 to 636 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 358 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 527 to 785 nm out.
AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 716 nm along 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 PAE.

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

B738 at 37,000 ft, 40 nm northeast, 2:10 pm PDT (21:10 UTC): moderate chop turbulence, remarks: mtw a 40-knot loss of airspeed zdvwc. 756 nm along the route, 40 nm northeast of the line.
as filed, and in English
```
LAR UA /OV MBW290020/TM 2110/FL370/TP B738/TB MOD CHOP/RM MTW +/-40KT ZDVWC
```
Report
a routine report filed through LAR
Where
20 nm west (290°) of MBW
Time
21:10 UTC
Height
at 37,000 ft
Aircraft
B738
Turbulence
moderate chop
Remarks
mtw a 40-knot loss of airspeed zdvwc
A319 at 22,000 ft, 9 nm south, 2:42 pm PDT (21:42 UTC): moderate chop turbulence, remarks: ZDVWC-13. At the destination end, 9 nm south of the line.
as filed, and in English
```
BJC UA /OV BJC322047/TM 2142/FL220/TP A319/TB MOD CHOP/RM ZDVWC-13
```
Report
a routine report filed through BJC
Where
47 nm northwest (322°) of BJC
Time
21:42 UTC
Height
at 22,000 ft
Aircraft
A319
Turbulence
moderate chop
Remarks
ZDVWC-13
BCS3 at 24,000 ft, 6 nm south, 4:28 pm PDT (23:28 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the descent. At the destination end, 6 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN320045/TM 2328/FL240/TP BCS3/TB MOD 240-220/RM DURD
```
Report
a routine report filed through DEN
Where
45 nm northwest (320°) of DEN
Time
23:28 UTC
Height
at 24,000 ft
Aircraft
BCS3
Turbulence
moderate from 24,000 ft to 22,000 ft
Remarks
during the descent
C172 at 5,500 ft, 12 nm northeast, 3:17 pm PDT (22:17 UTC): a trace of rime icing, 0 °C, remarks: zse. 189 nm along the route, 12 nm northeast of the line.
as filed, and in English
```
PUW UA /OV PUW250030/TM 2217/FL055/TP C172/TA 00/IC TRACE RIME/RM -ZSE
```
Report
a routine report filed through PUW
Where
30 nm west (250°) of PUW
Time
22:17 UTC
Height
at 5,500 ft
Aircraft
C172
Temperature
0 °C
Icing
trace rime
Remarks
zse
E175 descending, 28 nm southwest, 2:10 pm PDT (21:10 UTC): overcast, remarks: during the descent runway 03 bases 5,200 ft. 497 nm along the route, 28 nm southwest of the line.
as filed, and in English
```
IDA UA /OV KIDA/TM 2110/FLUNK/TP E175/SK OVC/RM DURD RY 03 BASES 052
```
Report
a routine report filed through IDA
Where
over KIDA
Time
21:10 UTC
Height
at height unknown
Aircraft
E175
Sky
overcast
Remarks
during the descent runway 03 bases 5,200 ft
A320 at 6,800 ft, 10 nm northeast, 3:08 pm PDT (22:08 UTC): scattered clouds above 6,800 ft; overcast above 8,000 ft. 547 nm along the route, 10 nm northeast of the line.
as filed, and in English
```
JAC UA /OV JAC/TM 2208/FL068/TP A320/SK SCT068 OVC080
```
Report
a routine report filed through JAC
Where
over JAC
Time
22:08 UTC
Height
at 6,800 ft
Aircraft
A320
Sky
SCT068 OVC080
CRJ7 at 17,000 ft, 13 nm southwest, 4:03 pm PDT (23:03 UTC): light rime icing, -6 °C. 567 nm along the route, 13 nm southwest of the line.
as filed, and in English
```
JAC UA /OV JAC160030/TM 2303/FL170/TP CRJ7/TA M6/IC LGT RIME /ZLC
```
Report
a routine report filed through JAC
Where
30 nm south (160°) of JAC
Time
23:03 UTC
Height
at 17,000 ft
Aircraft
CRJ7
Temperature
−6 °C
Icing
light rime zlc
A320 at 33,000 ft, 43 nm southwest, 3:24 pm PDT (22:24 UTC): light to moderate turbulence. 646 nm along the route, 43 nm southwest of the line.
as filed, and in English
```
RKS UA /OV OCS306029/TM 2224/FL330/TP A320/TB CONS LGT OCNL MOD /ZLC
```
Report
a routine report filed through RKS
Where
29 nm northwest (306°) of OCS
Time
22:24 UTC
Height
at 33,000 ft
Aircraft
A320
Turbulence
continuous light occasional moderate zlc
B738 at 35,200 ft, 50 nm southwest, 1:56 pm PDT (20:56 UTC): remarks: mdt mountain wave a 10-knot loss of airspeed knots zlc. 676 nm along the route, 50 nm southwest of the line.
as filed, and in English
```
RKS UA /OV OCS/TM 2056/FL352/TP B738/RM MDT MTN WAVE +-10 KTS /ZLC
```
Report
a routine report filed through RKS
Where
over OCS
Time
20:56 UTC
Height
at 35,200 ft
Aircraft
B738
Remarks
mdt mountain wave a 10-knot loss of airspeed knots zlc
CRJ2 at 29,000 ft, 34 nm northeast, 3:37 pm PDT (22:37 UTC): light chop turbulence, remarks: ZDVWC-34. 785 nm along the route, 34 nm northeast of the line.
as filed, and in English
```
CYS UA /OV CYS286065/TM 2237/FL290/TP CRJ2/TB LGT CHOP/RM ZDVWC-34
```
Report
a routine report filed through CYS
Where
65 nm west (286°) of CYS
Time
22:37 UTC
Height
at 29,000 ft
Aircraft
CRJ2
Turbulence
light chop
Remarks
ZDVWC-34
PC12 , 39 nm southwest, 3:33 pm PDT (22:33 UTC): remarks: ZDVWC-14. 785 nm along the route, 39 nm southwest of the line.
as filed, and in English
```
HDN UA /OV CHE030020/TM 2233/FLFL28/TP PC12/SK TOP280/RM ZDVWC-14
```
Report
a routine report filed through HDN
Where
20 nm northeast (030°) of CHE
Time
22:33 UTC
Height
at 2,800 ft
Aircraft
PC12
Sky
TOP280
Remarks
ZDVWC-14
B737 at 6,500 ft, 42 nm southeast, 4:27 pm PDT (23:27 UTC): no turbulence. At the destination end, 42 nm southeast of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 2327/FL065/TP B737/TB NEG TB ON FINAL RWY17R
```
Report
a routine report filed through DEN
Where
over DEN
Time
23:27 UTC
Height
at 6,500 ft
Aircraft
B737
Turbulence
no turbulence on final runway 17R
B737 descending, 42 nm southeast, 3:29 pm PDT (22:29 UTC): no turbulence up to 10,000 ft. At the destination end, 42 nm southeast of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 2229/FLDURD/TP B737/TB NEG BLO 100
```
Report
a routine report filed through DEN
Where
over DEN
Time
22:29 UTC
Height
during the descent
Aircraft
B737
Turbulence
no below 10,000 ft
CRJ2 at 6,500 ft, 42 nm southeast, 2:31 pm PDT (21:31 UTC): light chop turbulence. At the destination end, 42 nm southeast of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 2131/FL065/TP CRJ2/TB LGT CHOP ON FINAL RWY16L
```
Report
a routine report filed through DEN
Where
over DEN
Time
21:31 UTC
Height
at 6,500 ft
Aircraft
CRJ2
Turbulence
light chop on final runway 16L

3 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 8 forecast points nearest it (SEA, YKM, LWS, 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
7,500 ft	160° at 8 kt	+8 kt	1 °C	112 kt	7 h 43 min	1:14 am MDT (07:14 UTC)
9,500 ft	170° at 9 kt	+8 kt	-1 °C	112 kt	7 h 43 min	1:14 am MDT (07:14 UTC)
11,500 ft	190° at 16 kt	+7 kt	-4 °C	113 kt	7 h 39 min	1:10 am MDT (07:10 UTC)
13,500 ft	200° at 20 kt	+6 kt	-7 °C	114 kt	7 h 35 min	1:06 am MDT (07:06 UTC)
15,500 ft	200° at 22 kt	+5 kt	-10 °C	115 kt	7 h 31 min	1:02 am MDT (07:02 UTC)
17,500 ft	210° at 24 kt	+4 kt	-14 °C	116 kt	7 h 27 min	12:58 am MDT (06:58 UTC)
18,000 ft FL180	210° at 25 kt	+4 kt	-15 °C	116 kt	7 h 27 min	12:58 am MDT (06:58 UTC)
24,000 ft FL240	210° at 31 kt	+2 kt	-24 °C	118 kt	7 h 20 min	12:51 am MDT (06:51 UTC)
30,000 ft FL300	210° at 34 kt	+3 kt	-35 °C	117 kt	7 h 24 min	12:55 am MDT (06:55 UTC)
34,000 ft FL340	230° at 44 kt	−13 kt	-38 °C	133 kt	6 h 30 min	12:01 am MDT (06:01 UTC)
39,000 ft FL390	240° at 49 kt	−22 kt	-44 °C	142 kt	6 h 05 min	11:36 pm MDT (05:36 UTC)

Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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; 29 nm from the line	360/9	350/10 1°	010/10 -5°	030/20 -11°	020/60 -17°	010/86 -26°	360/90 -40°	010/68 -42°	360/31 -43°
YKM	used from 50 nm out; 48 nm from the line	030/16	020/18 0°	030/30 -8°	030/23 -13°	020/40 -23°	010/73 -29°	010/54 -36°	360/29 -37°	330/16 -40°
LWS	used from 149 nm out; 61 nm from the line	010/5	050/14 -2°	040/12 -6°	160/7 -10°	190/30 -22°	200/54 -27°	200/48 -35°	210/40 -37°	230/32 -41°
DLN	used from 348 nm out; 75 nm from the line			080/10 -3°	180/8 -3°	180/23 -14°	200/58 -22°	200/80 -36°	220/85 -41°	230/81 -45°
PIH	used from 497 nm out; 73 nm from the line		270/10	270/13 1°	210/16 -2°	200/56 -11°	200/51 -23°	200/68 -33°	220/77 -37°	230/73 -44°
LND	used from 547 nm out; 77 nm from the line			180/33 10°	190/50 3°	210/59 -9°	200/50 -21°	190/41 -34°	230/55 -39°	240/65 -47°
RKS	used from 696 nm out; 68 nm from the line			190/43	210/65 3°	210/57 -9°	210/56 -21°	210/47 -33°	230/63 -37°	240/77 -46°
DEN	used from 795 nm out; 81 nm from the line			190/31 16°	210/32 7°	240/41 -8°	230/47 -21°	240/56 -32°	250/65 -37°	250/61 -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
PAE Everett, WA	departure	VFR	from the northwest (320°) at 11 knots	10+ mi	none	606 ft	3:53 pm PDT (22:53 UTC)
ESW Easton, WA	60 nm out, 17 nm southwest of the line	no report just now				2,226 ft
MWH Moses Lake, WA	129 nm out, 15 nm north of the line, tower	VFR Sky: a few clouds at 11,000 feet	from the northeast (050°) at 17 knots, gusting to 24	10+ mi	none	1,188 ft	22:52 UTC
LWS Lewiston, ID	229 nm out, 15 nm northeast of the line, tower	VFR Sky: overcast at 5,500 feet	from the west (270°) at 8 knots	10+ mi	5,500 ft	1,442 ft	22:56 UTC
GIC Grangeville, ID	278 nm out, 10 nm northeast of the line	VFR Sky: a broken layer at 3,100 feet, overcast at 3,700 feet	from the northeast (050°) at 5 knots	10+ mi	3,100 ft	3,313 ft	23:15 UTC
SMN Salmon, ID	388 nm out, 15 nm north of the line	marginal VFR Sky: scattered clouds at 500 feet, overcast at 1,200 feet Weather: light rain	from the north-northwest (340°) at 9 knots	9 mi	1,200 ft	4,044 ft	22:56 UTC
RXE Rexburg, ID	497 nm out, 6 nm south of the line	marginal VFR Sky: scattered clouds at 600 feet, a broken layer at 1,000 feet, overcast at 4,300 feet Weather: rain, mist	from the northwest (320°) at 5 knots	3 mi	1,000 ft	4,862 ft	23:18 UTC
JAC Jackson, WY	547 nm out, 9 nm northeast of the line, tower	IFR Sky: a broken layer at 700 feet, a broken layer at 4,200 feet, overcast at 6,000 feet Weather: rain, mist	from the northwest (320°) at 4 knots	2 mi	700 ft	6,451 ft	23:12 UTC
PNA Pinedale, WY	606 nm out, 10 nm southwest of the line	VFR Sky: scattered clouds at 1,500 feet, scattered clouds at 2,300 feet, a broken layer at 11,000 feet	from the southeast (140°) at 13 knots, gusting to 19	10+ mi	11,000 ft	7,096 ft	23:15 UTC
SAA Saratoga, WY	766 nm out, 2 nm west of the line	VFR	from the south (190°) at 9 knots	10+ mi	none	7,014 ft	23:10 UTC
LAR Laramie, WY	805 nm out, 24 nm northeast of the line	VFR	from the south-southeast (160°) at 20 knots, gusting to 31	10+ mi	none	7,283 ft	22:53 UTC
FNL Fort Collins/Loveland, CO	destination	VFR	from the north-northwest (330°) at 6 knots	10+ mi	none	5,020 ft	4:56 pm MDT (22:56 UTC)

The highest airport on this list sits at 7,283 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At FNL when you get there the forecast at the estimated arrival, 11:36 pm MDT (05:36 UTC)

FNL has no terminal forecast; use the nearest airport that does.

The forecast for PAE, the departure

From Sun 11:00 am PDT (18:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, clear skies
From Sun 10:00 pm PDT (05:00 UTC): wind from the north at 3 knots, visibility more than 6 miles, clear skies
From Mon 1:00 am PDT (08:00 UTC): wind from the east-southeast at 2 knots, visibility more than 6 miles, patches of fog, clear skies
From Mon 7:00 am PDT (14:00 UTC): wind from the south-southeast at 2 knots, visibility more than 6 miles, patches of fog, clear skies
From Mon 10:00 am PDT (17:00 UTC): wind from the south-southeast at 3 knots, visibility more than 6 miles, clear skies

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 PAE 6:26 pm PDT (01:26 UTC), at FNL 6:24 pm MDT (00:24 UTC) (civil twilight ends 6:52 pm MDT (00:52 UTC)). At 120 knots the arrival at FNL is before sunrise there (7:07 am MDT (13:07 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, the Pacific Northwest · loop National Weather Service

Radar now, the northern Rockies · loop National Weather Service

Radar now, the southern Rockies · loop National Weather Service

Radar, the whole country · 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: Seattle Paine Field International, Northern Colorado Regional.