Plan a flight · Sun 5:57 pm PDT (00:57 UTC)

Seattle-Tacoma International to Acadiana Regional SEA → ARA

1,749 nautical miles (2,012 statute miles) southeast on a straight line, true course 116°, about 100° magnetic at the departure end (variation 16E). At 120 knots that is 11 h 49 min at the quickest height in today's winds (39,000 ft, a 28-knot tailwind), arriving about 7:46 am CDT (12:46 UTC). Right now SEA is VFR, wind from the north (350°) at 11 knots; ARA is VFR, wind calm. 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 ZULU 2C: moderate icing up to 14,000 ft. Over the route from 110 to 310 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 170 to 819 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 260 to 949 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 340 to 540 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 390 to 640 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 510 to 939 nm out.
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 530 to 799 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 680 to 729 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

A21N at 33,000 ft, 21 nm southwest, 3:35 pm PDT (22:35 UTC): moderate turbulence, remarks: mountain wave +25-30KTS. 769 nm along the route, 21 nm southwest of the line.
as filed, and in English
```
HDN UA /OV CHE/TM 2235/FL330/TP A21N/TB MOD/RM MTN WAVE +25-30KTS
```
Report
a routine report filed through HDN
Where
over CHE
Time
22:35 UTC
Height
at 33,000 ft
Aircraft
A21N
Turbulence
moderate
Remarks
mountain wave +25-30KTS
CRJ2 at 19,000 ft, 29 nm northeast, 5:47 pm PDT (00:47 UTC): moderate chop turbulence, remarks: ZDVWC-13. 809 nm along the route, 29 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
B39M at 32,000 ft, 5 nm southwest, 4:58 pm PDT (23:58 UTC): moderate chop turbulence, no icing, remarks: moderate mtw a 30-knot loss of airspeed ZDVWC-14. 809 nm along the route, 5 nm southwest of the line.
as filed, and in English
```
EEO UA /OV EKR069073/TM 2358/FL320/TP B39M/TB OCNL MOD CHOP/IC NEG/RM MOD MTW +/-30KT ZDVWC-14
```
Report
a routine report filed through EEO
Where
73 nm east (069°) of EKR
Time
23:58 UTC
Height
at 32,000 ft
Aircraft
B39M
Turbulence
occasional moderate chop
Icing
none
Remarks
moderate mtw a 30-knot loss of airspeed ZDVWC-14
BCS3 at 24,000 ft, 34 nm northeast, 4:28 pm PDT (23:28 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the descent. 849 nm along the route, 34 nm northeast 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
GLF5 at 45,000 ft, 11 nm southwest, 3:44 pm PDT (22:44 UTC): moderate turbulence, remarks: ZDVWC-46. 909 nm along the route, 11 nm southwest of the line.
as filed, and in English
```
COS UA /OV COS350025/TM 2244/FL450/TP GLF5/TB MOD /RM ZDVWC-46
```
Report
a routine report filed through COS
Where
25 nm north (350°) of COS
Time
22:44 UTC
Height
at 45,000 ft
Aircraft
GLF5
Turbulence
moderate
Remarks
ZDVWC-46
CRJ2 at 19,000 ft, 31 nm southwest, 3:02 pm PDT (22:02 UTC): moderate chop turbulence, remarks: during the climb from KDEN from 12,000 ft to 19,000 ft ZDVWC-41. 909 nm along the route, 31 nm southwest of the line.
as filed, and in English
```
COS UA /OV BRK262015/TM 2202/FL190/TP CRJ2/TB MOD CHOP/RM DURC FROM KDEN 120-190 ZDVWC-41
```
Report
a routine report filed through COS
Where
15 nm west (262°) of BRK
Time
22:02 UTC
Height
at 19,000 ft
Aircraft
CRJ2
Turbulence
moderate chop
Remarks
during the climb from KDEN from 12,000 ft to 19,000 ft ZDVWC-41
A320 at 26,500 ft, 5 nm southeast, 3:46 pm PDT (22:46 UTC): moderate clear-air turbulence, remarks: ZFW86. 1539 nm along the route, 5 nm southeast of the line.
as filed, and in English
```
GGG UA /OV GGG/TM 2246/FL265/TP A320/TB MOD CAT/RM ZFW86
```
Report
a routine report filed through GGG
Where
over GGG
Time
22:46 UTC
Height
at 26,500 ft
Aircraft
A320
Turbulence
moderate clear-air turbulence
Remarks
ZFW86
PC12 at 13,000 ft, 19 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. At the departure end, 19 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, 19 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. At the departure end, 19 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
C172 at 5,500 ft, 40 nm northeast, 3:17 pm PDT (22:17 UTC): a trace of rime icing, 0 °C, remarks: zse. 180 nm along the route, 40 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
E550 at 21,000 ft, 46 nm southwest, 4:27 pm PDT (23:27 UTC): light turbulence, a few clouds above 7,000 ft, remarks: during the climb zlc. 410 nm along the route, 46 nm southwest of the line.
as filed, and in English
```
SUN UA /OV SUN/TM 2327/FL210/TP E550/SK FEW070/TB CONS LGT/RM DURC /ZLC
```
Report
a routine report filed through SUN
Where
over SUN
Time
23:27 UTC
Height
at 21,000 ft
Aircraft
E550
Sky
a few clouds from 7,000 ft
Turbulence
continuous light
Remarks
during the climb zlc
PC12 at 15,000 ft, 19 nm northeast, 4:47 pm PDT (23:47 UTC): light rime icing above 15,000 ft. 540 nm along the route, 19 nm northeast of the line.
as filed, and in English
```
JAC UA /OV JAC200025/TM 2347/FL150/TP PC12/IC LGT RIME 150 /ZLC
```
Report
a routine report filed through JAC
Where
25 nm south (200°) of JAC
Time
23:47 UTC
Height
at 15,000 ft
Aircraft
PC12
Icing
light rime at 15,000 ft zlc
A320 at 6,800 ft, 44 nm northeast, 3:08 pm PDT (22:08 UTC): scattered clouds above 6,800 ft; overcast above 8,000 ft. 540 nm along the route, 44 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, 22 nm northeast, 4:03 pm PDT (23:03 UTC): light rime icing, -6 °C. 560 nm along the route, 22 nm northeast 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

16 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 17 forecast points nearest it (SEA, YKM, LWS, BOI, DLN, PIH, LND, RKS, DEN, PUB, GLD, GCK, GAG, OKC, DAL, SHV, LCH). 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	200° at 11 kt	+4 kt	17 °C	116 kt	15 h 05 min	11:02 am CDT (16:02 UTC)
7,500 ft	200° at 16 kt	+5 kt	10 °C	115 kt	15 h 13 min	11:10 am CDT (16:10 UTC)
9,500 ft	210° at 17 kt	+3 kt	6 °C	117 kt	14 h 57 min	10:54 am CDT (15:54 UTC)
11,500 ft	220° at 20 kt	0	3 °C	120 kt	14 h 34 min	10:31 am CDT (15:31 UTC)
13,500 ft	220° at 22 kt	−1 kt	-1 °C	121 kt	14 h 27 min	10:24 am CDT (15:24 UTC)
15,500 ft	220° at 23 kt	−2 kt	-5 °C	122 kt	14 h 20 min	10:17 am CDT (15:17 UTC)
17,500 ft	220° at 25 kt	−3 kt	-9 °C	123 kt	14 h 13 min	10:10 am CDT (15:10 UTC)
18,000 ft FL180	230° at 25 kt	−3 kt	-10 °C	123 kt	14 h 13 min	10:10 am CDT (15:10 UTC)
24,000 ft FL240	230° at 27 kt	−5 kt	-20 °C	125 kt	14 h	9:57 am CDT (14:57 UTC)
30,000 ft FL300	240° at 34 kt	−13 kt	-32 °C	133 kt	13 h 09 min	9:06 am CDT (14:06 UTC)
34,000 ft FL340	250° at 42 kt	−21 kt	-38 °C	141 kt	12 h 24 min	8:21 am CDT (13:21 UTC)
39,000 ft FL390	260° at 44 kt	−28 kt	-47 °C	148 kt	11 h 49 min	7:46 am CDT (12:46 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; 25 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; 20 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 150 nm out; 65 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°
BOI	used from 300 nm out; 86 nm from the line		330/14 4°	230/5 -2°	220/20 -7°	210/37 -20°	200/59 -26°	200/67 -34°	210/73 -35°	220/62 -41°
DLN	used from 350 nm out; 93 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 400 nm out; 76 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 550 nm out; 82 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 600 nm out; 44 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 799 nm out; 67 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°
PUB	used from 949 nm out; 53 nm from the line			210/24 16°	210/28 8°	230/43 -8°	240/42 -21°	240/77 -30°	240/72 -36°	250/51 -47°
GLD	used from 999 nm out; 85 nm from the line		190/29	200/30 15°	240/23 8°	250/39 -7°	230/39 -19°	230/57 -31°	240/67 -39°	250/62 -49°
GCK	used from 1049 nm out; 56 nm from the line		200/35 21°	220/34 14°	240/30 8°	240/27 -6°	240/31 -17°	240/53 -30°	250/55 -39°	250/60 -50°
GAG	used from 1149 nm out; 29 nm from the line		190/34 19°	240/27 14°	240/26 8°	240/24 -6°	240/29 -16°	250/50 -28°	250/50 -39°	260/46 -50°
OKC	used from 1249 nm out; 55 nm from the line	190/29	200/29 16°	230/22 14°	240/17 9°	240/28 -6°	250/35 -15°	270/42 -29°	270/43 -39°	280/38 -51°
DAL	used from 1399 nm out; 61 nm from the line	180/21	190/24 15°	230/20 12°	220/23 8°	240/22 -5°	230/18 -15°	280/33 -29°	280/36 -39°	300/33 -52°
SHV	used from 1499 nm out; 61 nm from the line	190/11	230/19 17°	230/26 12°	260/15 7°	280/16 -4°	300/17 -15°	300/34 -30°	300/31 -41°	310/42 -52°
LCH	used from 1649 nm out; 50 nm from the line	190/6	180/8 18°	170/13 12°	220/12 7°	290/10 -4°	280/15 -14°	320/30 -31°	320/32 -40°	320/39 -53°

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 5,000 feet	from the north (350°) at 11 knots	10+ mi	none	432 ft	5:53 pm PDT (00:53 UTC)
PSC Pasco, WA	150 nm out, 4 nm southwest of the line, tower	VFR Sky: a few clouds at 7,000 feet	from the northeast (040°) at 11 knots	10+ mi	none	410 ft	23:53 UTC
ALW Walla Walla, WA	180 nm out, 6 nm east of the line, tower	VFR Sky: overcast at 5,000 feet	from the south-southwest (210°) at 3 knots	10+ mi	5,000 ft	1,194 ft	00:53 UTC
IDA Idaho Falls, ID	490 nm out, 6 nm northeast of the line, tower	VFR Sky: a broken layer at 4,500 feet, overcast at 5,000 feet Weather: light rain	from the north-northwest (340°) at 12 knots	10+ mi	4,500 ft	4,743 ft	00:53 UTC
AFO Afton, WY	560 nm out, 7 nm southwest of the line	low IFR Sky: a broken layer at 200 feet, a broken layer at 3,800 feet, overcast at 7,000 feet	from the west (260°) at 3 knots	10+ mi	200 ft	6,220 ft	00:30 UTC
BJC Denver, CO	869 nm out, 10 nm northeast of the line, tower	VFR	from the north (350°) at 5 knots	10+ mi	none	5,673 ft	00:45 UTC
APA Denver, CO	889 nm out, 4 nm east of the line, tower	VFR Sky: a few clouds at 10,000 feet, scattered clouds at 14,000 feet, a broken layer at 22,000 feet	from the south-southwest (200°) at 23 knots, gusting to 31	10+ mi	22,000 ft	5,884 ft	00:53 UTC
LBL Liberal, KS	1129 nm out, 1 nm southeast of the line	VFR	from the south (190°) at 16 knots	10+ mi	none	2,885 ft	23:56 UTC
ADM Ardmore, OK	1379 nm out, 5 nm east of the line, tower	VFR	from the south (170°) at 13 knots, gusting to 18	10+ mi	none	776 ft	19:50 UTC
GGG Longview, TX	1549 nm out, 3 nm west of the line, tower	VFR	from the south-southeast (150°) at 3 knots	10+ mi	none	365 ft	00:53 UTC
ACP Oakdale, LA	1689 nm out, 1 nm northeast of the line	VFR	from the south (190°) at 3 knots	10+ mi	none	107 ft	00:35 UTC
ARA New Iberia, LA	destination	VFR	calm	10+ mi	none	24 ft	7:53 pm CDT (00:53 UTC)

The highest airport on this list sits at 6,220 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At ARA when you get there the forecast at the estimated arrival, 7:46 am CDT (12:46 UTC)

Wind light and variable, visibility more than 6 miles, clear skies VFR

The whole forecast for ARA

From Sun 7:00 pm CDT (00:00 UTC): wind from the south-southwest at 7 knots, visibility more than 6 miles, clear skies
From Sun 8:00 pm CDT (01:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
From Mon 10:00 am CDT (15:00 UTC): wind from the southeast at 6 knots, visibility more than 6 miles, clear skies

The forecast for SEA, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the north at 12 knots, gusting to 20, visibility more than 6 miles, a few clouds at 2,000 feet, a few clouds at 5,000 feet
From Sun 8:00 pm PDT (03:00 UTC): wind from the 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 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 ARA 6:40 pm CDT (23:40 UTC) (civil twilight ends 7:04 pm CDT (00:04 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-Tacoma International, Acadiana Regional.