Plan a flight · Sun 8:07 pm CDT (01:07 UTC)

George Bush Intcntl/Houston Airport to Key West International IAH → EYW

794 nautical miles (914 statute miles) east on a straight line, true course 111°, about 108° magnetic at the departure end (variation 3E). At 120 knots that is 5 h 40 min at the quickest height in today's winds (30,000 ft, a 20-knot tailwind), arriving about 2:47 am EDT (06:47 UTC), after sunset at the destination. Right now IAH is VFR, wind from the southeast (130°) at 10 knots; EYW is VFR, wind from the east (080°) at 4 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: 167 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

No SIGMET or AIRMET covers any part of this route right now.

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

B789 at 27,000 ft, 30 nm northeast, 7:30 pm CDT (00:30 UTC): moderate clear-air turbulence, remarks: zhu. 119 nm along the route, 30 nm northeast of the line.
as filed, and in English
```
LFT UA /OV LLA270030/TM 0030/FL270/TP B789/TB MOD CAT/RM ZHU
```
Report
a routine report filed through LFT
Where
30 nm west (270°) of LLA
Time
00:30 UTC
Height
at 27,000 ft
Aircraft
B789
Turbulence
moderate clear-air turbulence
Remarks
zhu
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
B737 at 28,000 ft, 24 nm north, 5:52 pm CDT (22:52 UTC): light to moderate turbulence above 28,000 ft, remarks: below 26,000 ft zhu. 109 nm along the route, 24 nm north of the line.
as filed, and in English
```
BPT UA /OV BPT109042/TM 2252/FL280/TP B737/TB INTMT LGT-MOD FL280 /RM BLO FL260. ZHU
```
Report
a routine report filed through BPT
Where
42 nm east (109°) of BPT
Time
22:52 UTC
Height
at 28,000 ft
Aircraft
B737
Turbulence
intermittent light to moderate FL280
Remarks
below 26,000 ft zhu
A21N at 32,000 ft, 39 nm north, 6:15 pm CDT (23:15 UTC): light chop turbulence, remarks: zhu. 298 nm along the route, 39 nm north of the line.
as filed, and in English
```
MSY UA /OV LEV154030/TM 2315/FL320/TP A21N/TB LGT CHOP/RM ZHU
```
Report
a routine report filed through MSY
Where
30 nm southeast (154°) of LEV
Time
23:15 UTC
Height
at 32,000 ft
Aircraft
A21N
Turbulence
light chop
Remarks
zhu

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 6 forecast points nearest it (HOU, LCH, MSY, MOB, PIE, EYW). 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	light and variable	0		120 kt	6 h 37 min	3:44 am EDT (07:44 UTC)
5,500 ft	light and variable	0		120 kt	6 h 37 min	3:44 am EDT (07:44 UTC)
7,500 ft	230° at 2 kt	−1 kt	15 °C	121 kt	6 h 34 min	3:41 am EDT (07:41 UTC)
9,500 ft	240° at 4 kt	−2 kt	12 °C	122 kt	6 h 30 min	3:37 am EDT (07:37 UTC)
11,500 ft	260° at 7 kt	−6 kt	8 °C	126 kt	6 h 18 min	3:25 am EDT (07:25 UTC)
13,500 ft	270° at 8 kt	−8 kt	4 °C	128 kt	6 h 12 min	3:19 am EDT (07:19 UTC)
15,500 ft	280° at 8 kt	−8 kt	1 °C	128 kt	6 h 12 min	3:19 am EDT (07:19 UTC)
17,500 ft	280° at 9 kt	−8 kt	-4 °C	128 kt	6 h 12 min	3:19 am EDT (07:19 UTC)
18,000 ft FL180	280° at 9 kt	−8 kt	-4 °C	128 kt	6 h 12 min	3:19 am EDT (07:19 UTC)
24,000 ft FL240	280° at 12 kt	−12 kt	-15 °C	132 kt	6 h 01 min	3:08 am EDT (07:08 UTC)
30,000 ft FL300	320° at 22 kt	−20 kt	-32 °C	140 kt	5 h 40 min	2:47 am EDT (06:47 UTC)
34,000 ft FL340	330° at 21 kt	−16 kt	-41 °C	136 kt	5 h 50 min	2:57 am EDT (06:57 UTC)
39,000 ft FL390	330° at 21 kt	−16 kt	-52 °C	136 kt	5 h 50 min	2:57 am EDT (06:57 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
HOU	used from 0 nm out; 23 nm from the line	160/18	160/14 17°	180/19 12°	190/11 8°	260/12 -4°	260/14 -13°	310/26 -30°	310/30 -40°	320/21 -52°
LCH	used from 50 nm out; 54 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°
MSY	used from 198 nm out; 103 nm from the line	L/V	020/6 18°	L/V 12°	300/11 7°	330/15 -4°	320/22 -16°	330/38 -32°	350/47 -42°	340/56 -52°
MOB	used from 447 nm out; 234 nm from the line	310/7	350/18 18°	330/16 12°	300/18 7°	320/17 -6°	330/27 -17°	340/52 -33°	350/53 -43°	330/38 -50°
PIE	used from 496 nm out; 208 nm from the line	310/7	270/12 17°	270/14 13°	260/14 8°	240/22 -5°	230/24 -16°	220/26 -31°	200/31 -41°	180/33 -53°
EYW	used from 645 nm out; 124 nm from the line	090/8	100/8 19°	L/V 14°	L/V 8°	160/8 -5°	170/8 -15°	360/6 -32°	050/8 -42°	100/17 -52°

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)
EFD Houston, TX	20 nm out, 18 nm southwest of the line, tower	VFR	from the east-southeast (110°) at 8 knots	10+ mi	none	32 ft	00:54 UTC
EYW Key West, FL	destination	VFR	from the east (080°) at 4 knots	10+ mi	none	3 ft	8:53 pm EDT (00:53 UTC)

The highest airport on this list sits at 95 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At EYW when you get there the forecast at the estimated arrival, 2:47 am EDT (06:47 UTC)

Wind from the east-northeast at 7 knots, visibility more than 6 miles, scattered clouds at 2,500 feet VFR

The whole forecast for EYW

From Sun 8:00 pm EDT (00:00 UTC): wind from the east-northeast at 7 knots, visibility more than 6 miles, scattered clouds at 2,500 feet
From Mon 8:00 am EDT (12:00 UTC): wind from the northeast at 6 knots, visibility more than 6 miles, a few clouds at 2,000 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

6/5945 Key West, FL 7 nm from the route, at the destination end · security · ZMA
6/0299 Key West, FL, Friday, June 26, 2026 through Saturday, October 17, 2026 Local 7 nm from the route, at the destination end · security · until 17 October · ZMA

Daylight

Sunset at IAH 6:54 pm CDT (23:54 UTC), at EYW 7:03 pm EDT (23:03 UTC) (civil twilight ends 7:26 pm EDT (23:26 UTC)). At 120 knots the arrival at EYW is before sunrise there (7:23 am EDT (11:23 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 Southeast · 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, Key West International.