Plan a flight · Sun 8:12 pm CDT (01:12 UTC)

George Bush Intcntl/Houston Airport to Seattle-Tacoma International IAH → SEA

1,627 nautical miles (1,873 statute miles) northwest on a straight line, true course 318°, about 315° magnetic at the departure end (variation 3E). At 120 knots that is 13 h 01 min at the quickest height in today's winds (4,500 ft, a 5-knot tailwind), arriving about 7:13 am PDT (14:13 UTC), after sunset at the destination. Right now IAH is VFR, wind from the southeast (130°) at 10 knots; SEA is VFR, wind from the north (350°) at 11 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: 4,176 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 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 609 to 1108 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 689 to 1358 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 759 to 1458 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 779 to 1088 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 869 to 928 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 948 to 1258 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 1078 to 1268 nm out.
AIRMET ZULU 2C: moderate icing up to 14,000 ft. Over the route from 1328 to 1517 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 IAH.

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

C650 at 40,000 ft, 7 nm north, 6:48 pm CDT (23:48 UTC): moderate turbulence, remarks: ZDVWC-03. 799 nm along the route, 7 nm north of the line.
as filed, and in English
```
ASE UA /OV DBL/TM 2348/FL400/TP C650/TB MOD /RM ZDVWC-03
```
Report
a routine report filed through ASE
Where
over DBL
Time
23:48 UTC
Height
at 40,000 ft
Aircraft
C650
Turbulence
moderate
Remarks
ZDVWC-03
C680A at 16,000 ft, 6 nm south, 5:59 pm CDT (22:59 UTC): moderate turbulence, scattered clouds above 16,000 ft, remarks: during the descent. 799 nm along the route, 6 nm south of the line.
as filed, and in English
```
ASE UA /OV HAERI/TM 2259/FL160/TP C680A/SK SCT160/TB CONS MOD/RM DURD
```
Report
a routine report filed through ASE
Where
haeri
Time
22:59 UTC
Height
at 16,000 ft
Aircraft
C680A
Sky
scattered clouds from 16,000 ft
Turbulence
continuous moderate
Remarks
during the descent
C680 at 18,000 ft, 23 nm southwest, 5:35 pm CDT (22:35 UTC): moderate turbulence, remarks: from 18,000 ft to 10,000 ft. 799 nm along the route, 23 nm southwest of the line.
as filed, and in English
```
ASE UA /OV ASE230020/TM 2235/FL180/TP C680/TB MOD/RM 180-100
```
Report
a routine report filed through ASE
Where
20 nm southwest (230°) of ASE
Time
22:35 UTC
Height
at 18,000 ft
Aircraft
C680
Turbulence
moderate
Remarks
from 18,000 ft to 10,000 ft
A21N at 33,000 ft, 42 nm northeast, 5:35 pm CDT (22:35 UTC): moderate turbulence, remarks: mountain wave +25-30KTS. 859 nm along the route, 42 nm northeast 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
B39M at 27,000 ft, 2 nm south, 7:42 pm CDT (00:42 UTC): light chop turbulence, remarks: zhu. At the departure end, 2 nm south of the line.
as filed, and in English
```
IAH UA /OV IH340035/TM 0042/FL270/TP B39M/TB LT CHOP DURC/RM ZHU
```
Report
a routine report filed through IAH
Where
IH340035
Time
00:42 UTC
Height
at 27,000 ft
Aircraft
B39M
Turbulence
lt chop during the climb
Remarks
zhu
A320 at 35,000 ft, 18 nm southwest, 7:43 pm CDT (00:43 UTC): light chop turbulence, remarks: ZFW47. 389 nm along the route, 18 nm southwest of the line.
as filed, and in English
```
CDS UA /OV CDS270030/TM 0043/FL350/TP A320/TB LGT CHOP/RM ZFW47
```
Report
a routine report filed through CDS
Where
30 nm west (270°) of CDS
Time
00:43 UTC
Height
at 35,000 ft
Aircraft
A320
Turbulence
light chop
Remarks
ZFW47
A21N at 31,000 ft, 31 nm northeast, 7:24 pm CDT (00:24 UTC): remarks: mountain wave +/-10-20KT ZDVWC-29. 669 nm along the route, 31 nm northeast of the line.
as filed, and in English
```
PUB UA /OV PUB/TM 0024/FL310/TP A21N/RM MTN WAVE +/-10-20KT ZDVWC-29
```
Report
a routine report filed through PUB
Where
over PUB
Time
00:24 UTC
Height
at 31,000 ft
Aircraft
A21N
Remarks
mountain wave +/-10-20KT ZDVWC-29
CL35 at 43,000 ft, 5 nm southeast, 7:21 pm CDT (00:21 UTC): remarks: mtw +/-300FT zdvwc. 699 nm along the route, 5 nm southeast of the line.
as filed, and in English
```
PUB UA /OV PUB250040/TM 0021/FL430/TP CL35/RM MTW +/-300FT ZDVWC
```
Report
a routine report filed through PUB
Where
40 nm west (250°) of PUB
Time
00:21 UTC
Height
at 43,000 ft
Aircraft
CL35
Remarks
mtw +/-300FT zdvwc
BE9L at 20,000 ft, 37 nm southwest, 7:34 pm CDT (00:34 UTC): light rime icing, -9 °C, remarks: ZDVWC-41. 709 nm along the route, 37 nm southwest of the line.
as filed, and in English
```
ALS UA /OV ALS330035/TM 0034/FL200/TP BE9L/TA M09/IC LGT RIME/RM ZDVWC-41
```
Report
a routine report filed through ALS
Where
35 nm northwest (330°) of ALS
Time
00:34 UTC
Height
at 20,000 ft
Aircraft
BE9L
Temperature
−9 °C
Icing
light rime
Remarks
ZDVWC-41
B737 at 25,000 ft, 40 nm northeast, 7:29 pm CDT (00:29 UTC): light rime icing, 0 °C, remarks: during the climb ZDVWC-29. 709 nm along the route, 40 nm northeast of the line.
as filed, and in English
```
COS UA /OV BRK242015/TM 0029/FL250/TP B737/SK TOP280/TA 00/IC LGT RIME/RM DURC ZDVWC-29
```
Report
a routine report filed through COS
Where
15 nm southwest (242°) of BRK
Time
00:29 UTC
Height
at 25,000 ft
Aircraft
B737
Sky
TOP280
Temperature
0 °C
Icing
light rime
Remarks
during the climb ZDVWC-29
B738 at 35,000 ft, 42 nm southwest, 5:18 pm CDT (22:18 UTC): light to moderate chop turbulence, remarks: ZDVWC-30. 719 nm along the route, 42 nm southwest of the line.
as filed, and in English
```
ALS UA /OV ALS319040/TM 2218/FL350/TP B738/TB CONS LGT-OCNL MOD CHOP/RM ZDVWC-30
```
Report
a routine report filed through ALS
Where
40 nm northwest (319°) of ALS
Time
22:18 UTC
Height
at 35,000 ft
Aircraft
B738
Turbulence
continuous lgt-ocnl moderate chop
Remarks
ZDVWC-30
B738 at 38,000 ft, 43 nm northeast, 5:39 pm CDT (22:39 UTC): light chop turbulence, remarks: light mountain wave a 8-knot loss of airspeed zdvwc. 789 nm along the route, 43 nm northeast of the line.
as filed, and in English
```
ASE UA /OV DBL047040/TM 2239/FL380/TP B738/TB LGT CHOP/RM LGT MTN WAVE +/-8KTS ZDVWC
```
Report
a routine report filed through ASE
Where
40 nm northeast (047°) of DBL
Time
22:39 UTC
Height
at 38,000 ft
Aircraft
B738
Turbulence
light chop
Remarks
light mountain wave a 8-knot loss of airspeed zdvwc
LJ60 at 15,000 ft, 38 nm southwest, 7:28 pm CDT (00:28 UTC): light to moderate icing from 16,500 ft to 19,000 ft, -13 °C, remarks: during the descent zdvwc. 799 nm along the route, 38 nm southwest of the line.
as filed, and in English
```
MTJ UA /OV MTJ030030/TM 0028/FL150/TP LJ60/TA M13/IC LGT-MOD 190-165/RM DURD ZDVWC
```
Report
a routine report filed through MTJ
Where
30 nm northeast (030°) of MTJ
Time
00:28 UTC
Height
at 15,000 ft
Aircraft
LJ60
Temperature
−13 °C
Icing
light to moderate from 19,000 ft to 16,500 ft
Remarks
during the descent zdvwc
C680A at 14,000 ft, 7 nm north, 6:02 pm CDT (23:02 UTC): light to moderate chop turbulence. 799 nm along the route, 7 nm north of the line.
as filed, and in English
```
ASE UA /OV DBL/TM 2302/FL140/TP C680A/TB LGT OCNL MOD CHOP
```
Report
a routine report filed through ASE
Where
over DBL
Time
23:02 UTC
Height
at 14,000 ft
Aircraft
C680A
Turbulence
light occasional moderate chop

14 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 westbound cruising heights for this course (VFR: even thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 14 forecast points nearest it (CLL, DAL, ABI, SPS, AMA, TCC, PUB, GJT, RKS, PIH, BOI, LWS, YKM, SEA). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
4,500 ft	200° at 8 kt	−5 kt	7 °C	125 kt	13 h 01 min	7:13 am PDT (14:13 UTC)
6,500 ft	210° at 8 kt	−3 kt	7 °C	123 kt	13 h 14 min	7:26 am PDT (14:26 UTC)
8,500 ft	210° at 15 kt	−4 kt	6 °C	124 kt	13 h 07 min	7:19 am PDT (14:19 UTC)
10,500 ft	210° at 18 kt	−3 kt	4 °C	123 kt	13 h 14 min	7:26 am PDT (14:26 UTC)
12,500 ft	220° at 22 kt	−3 kt	0 °C	123 kt	13 h 14 min	7:26 am PDT (14:26 UTC)
14,500 ft	220° at 24 kt	−2 kt	-4 °C	122 kt	13 h 20 min	7:32 am PDT (14:32 UTC)
16,500 ft	220° at 26 kt	−1 kt	-8 °C	121 kt	13 h 27 min	7:39 am PDT (14:39 UTC)
18,000 ft FL180	220° at 28 kt	−1 kt	-11 °C	121 kt	13 h 27 min	7:39 am PDT (14:39 UTC)
24,000 ft FL240	230° at 30 kt	+2 kt	-21 °C	118 kt	13 h 47 min	7:59 am PDT (14:59 UTC)
30,000 ft FL300	230° at 38 kt	+7 kt	-31 °C	113 kt	14 h 24 min	8:36 am PDT (15:36 UTC)
34,000 ft FL340	240° at 44 kt	+15 kt	-37 °C	105 kt	15 h 30 min	9:42 am PDT (16:42 UTC)
39,000 ft FL390	250° at 44 kt	+20 kt	-46 °C	100 kt	16 h 16 min	10:28 am PDT (17:28 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
CLL	used from 0 nm out; 40 nm from the line	160/18	190/18 16°	200/19 12°	220/14 7°	260/18 -5°	250/20 -13°	290/29 -29°	290/31 -40°	300/22 -53°
DAL	used from 150 nm out; 60 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°
ABI	used from 200 nm out; 71 nm from the line		180/26 17°	220/18 12°	230/25 8°	230/28 -5°	240/29 -14°	250/35 -28°	270/37 -39°	280/37 -51°
SPS	used from 250 nm out; 48 nm from the line	180/26	200/25 16°	220/19 13°	220/20 9°	230/26 -5°	230/34 -15°	260/37 -28°	270/42 -39°	280/40 -51°
AMA	used from 349 nm out; 76 nm from the line		190/28	220/26 14°	230/27 7°	250/24 -6°	250/32 -16°	240/51 -28°	250/52 -38°	250/51 -50°
TCC	used from 549 nm out; 98 nm from the line		200/26	200/28 14°	220/25 7°	230/28 -7°	240/41 -19°	240/62 -28°	250/61 -37°	250/49 -49°
PUB	used from 599 nm out; 57 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°
GJT	used from 749 nm out; 95 nm from the line			210/40 11°	210/46 3°	210/61 -10°	210/68 -22°	220/57 -29°	230/59 -36°	240/66 -46°
RKS	used from 898 nm out; 56 nm from the line			190/43	210/65 3°	210/57 -9°	210/56 -21°	210/47 -33°	230/63 -37°	240/77 -46°
PIH	used from 1048 nm out; 61 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°
BOI	used from 1198 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°
LWS	used from 1348 nm out; 72 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°
YKM	used from 1448 nm out; 66 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°
SEA	used from 1597 nm out; 15 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°

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
IAH Houston, TX	departure	VFR Sky: a broken layer at 25,000 feet	from the southeast (130°) at 10 knots	10+ mi	25,000 ft	95 ft	7:53 pm CDT (00:53 UTC)
CNW Waco, TX	130 nm out, 4 nm north of the line, tower	VFR	from the south-southeast (160°) at 9 knots	10+ mi	none	470 ft	23:55 UTC
RPH Graham, TX	250 nm out, 8 nm northeast of the line	reported, no category	from the south-southeast (160°) at 10 knots, gusting to 17		none	1,122 ft	22:15 UTC
AMA Amarillo, TX	449 nm out, 13 nm southwest of the line, tower	VFR	from the south (170°) at 14 knots	10+ mi	none	3,606 ft	00:53 UTC
DUX Dumas, TX	489 nm out, 4 nm east of the line	VFR	from the south (180°) at 12 knots	10+ mi	none	3,706 ft	00:55 UTC
ASE Aspen, CO	799 nm out, 6 nm south of the line, tower	VFR Sky: a broken layer at 7,500 feet, overcast at 9,000 feet Weather: light rain	from the west-northwest (300°) at 12 knots, gusting to 15	10+ mi	7,500 ft	7,837 ft	00:53 UTC
EEO Meeker, CO	859 nm out, 4 nm north of the line	VFR	variable at 3 knots	10+ mi	none	6,415 ft	00:53 UTC
PIH Pocatello, ID	1138 nm out, 5 nm east of the line, tower	VFR Sky: scattered clouds at 1,200 feet, a broken layer at 6,000 feet, overcast at 8,500 feet Weather: light rain	from the southwest (230°) at 9 knots	10+ mi	6,000 ft	4,451 ft	00:53 UTC
SUN Hailey, ID	1218 nm out, 13 nm southwest of the line, tower	marginal VFR Sky: scattered clouds at 300 feet, a broken layer at 1,300 feet, overcast at 2,200 feet Weather: light rain	from the east-southeast (120°) at 5 knots	3 mi	1,300 ft	5,319 ft	00:50 UTC
PDT Pendleton, OR	1448 nm out, 15 nm southwest of the line, tower	VFR Sky: overcast at 6,000 feet	from the north-northeast (030°) at 3 knots	10+ mi	6,000 ft	1,494 ft	00:53 UTC
PSC Pasco, WA	1477 nm out, 8 nm northeast of the line, tower	VFR Sky: overcast at 9,500 feet	from the northeast (040°) at 11 knots	10+ mi	9,500 ft	410 ft	00:53 UTC
SEA Seattle, WA	destination	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)

The highest airport on this list sits at 7,837 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, 7:13 am PDT (14:13 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 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

The forecast for IAH, the departure

From Sun 7:00 pm CDT (00:00 UTC): wind from the south-southeast at 12 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Sun 9:00 pm CDT (02:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 4:00 am CDT (09:00 UTC): wind from the east-southeast at 4 knots, visibility more than 6 miles, scattered clouds at 2,500 feet, scattered clouds at 25,000 feet
From Mon 12:00 pm CDT (17:00 UTC): wind from the southeast at 11 knots, visibility more than 6 miles, scattered clouds at 3,500 feet, a broken layer at 25,000 feet
30% chance between Mon 1:00 pm CDT (18:00 UTC) and 5:00 pm CDT (22:00 UTC): light rain showers

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

6/0543 MCGREGOR, TX 21 nm from the route, 140 nm along the route · security · ZFW

Daylight

Sunset at IAH 6:54 pm CDT (23:54 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, the southern Plains · loop National Weather Service

Radar now, the southern Rockies · loop National Weather Service

Radar now, the Pacific Northwest · 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: George Bush Intcntl/Houston Airport, Seattle-Tacoma International.