Gary/Chicago International to Brownsville/South Padre Island International GYY → BRO
1,066 nautical miles (1,226 statute miles) southwest on a straight line, true course 211°, about 213° magnetic at the departure end (variation 2W). At 120 knots that is 8 h 32 min at the quickest height in today's winds (39,000 ft, a 5-knot tailwind), arriving about 6:08 am CDT (11:08 UTC), after sunset at the destination. Right now GYY is VFR, wind calm; BRO is VFR, wind from the east-southeast (120°) at 8 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
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 GYY.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
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 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 12 forecast points nearest it (JOT, SPI, STL, CGI, MEM, LIT, SHV, LCH, HOU, PSX, CRP, BRO). 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 | 210° at 16 kt | +16 kt | 104 kt | 10 h 15 min | 7:51 am CDT (12:51 UTC) | |
| 6,500 ft | 220° at 15 kt | +15 kt | 16 °C | 105 kt | 10 h 09 min | 7:45 am CDT (12:45 UTC) |
| 8,500 ft | 230° at 15 kt | +14 kt | 13 °C | 106 kt | 10 h 03 min | 7:39 am CDT (12:39 UTC) |
| 10,500 ft | 240° at 13 kt | +11 kt | 10 °C | 109 kt | 9 h 47 min | 7:23 am CDT (12:23 UTC) |
| 12,500 ft | 250° at 10 kt | +7 kt | 6 °C | 113 kt | 9 h 26 min | 7:02 am CDT (12:02 UTC) |
| 14,500 ft | 260° at 11 kt | +7 kt | 2 °C | 113 kt | 9 h 26 min | 7:02 am CDT (12:02 UTC) |
| 16,500 ft | 270° at 12 kt | +6 kt | -2 °C | 114 kt | 9 h 21 min | 6:57 am CDT (11:57 UTC) |
| 18,000 ft FL180 | 270° at 13 kt | +6 kt | -5 °C | 114 kt | 9 h 21 min | 6:57 am CDT (11:57 UTC) |
| 24,000 ft FL240 | 270° at 18 kt | +8 kt | -16 °C | 112 kt | 9 h 31 min | 7:07 am CDT (12:07 UTC) |
| 30,000 ft FL300 | 300° at 25 kt | 0 | -31 °C | 120 kt | 8 h 53 min | 6:29 am CDT (11:29 UTC) |
| 34,000 ft FL340 | 300° at 32 kt | 0 | -41 °C | 120 kt | 8 h 53 min | 6:29 am CDT (11:29 UTC) |
| 39,000 ft FL390 | 310° at 35 kt | −5 kt | -52 °C | 125 kt | 8 h 32 min | 6:08 am CDT (11:08 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| JOT | used from 0 nm out; 27 nm from the line | 250/23 | 270/22 15° | 250/16 10° | 240/9 4° | 280/22 -7° | 280/29 -19° | 300/29 -34° | 290/50 -43° | 300/64 -52° |
| SPI | used from 100 nm out; 41 nm from the line | 220/21 | 250/23 16° | 260/27 9° | 270/14 6° | 270/23 -7° | 270/31 -19° | 270/28 -33° | 290/48 -42° | 300/55 -52° |
| STL | used from 199 nm out; 33 nm from the line | 250/24 | 250/24 16° | 260/23 9° | 270/16 6° | 260/25 -6° | 270/29 -19° | 290/34 -33° | 290/48 -41° | 290/54 -51° |
| CGI | used from 249 nm out; 46 nm from the line | 240/20 | 270/15 15° | 280/15 11° | 300/13 6° | 290/20 -6° | 280/24 -18° | 300/34 -32° | 300/47 -41° | 310/49 -51° |
| MEM | used from 349 nm out; 97 nm from the line | 230/19 | 260/16 15° | 270/17 12° | 300/13 6° | 300/15 -5° | 300/26 -18° | 300/34 -32° | 300/41 -40° | 310/46 -52° |
| LIT | used from 398 nm out; 49 nm from the line | 220/21 | 230/17 16° | 250/24 12° | 260/15 7° | 260/13 -5° | 280/25 -16° | 290/35 -30° | 300/42 -40° | 300/40 -52° |
| SHV | used from 548 nm out; 58 nm from the line | 200/18 | 230/24 18° | 230/24 12° | 240/14 8° | 260/12 -4° | 240/11 -15° | 300/31 -29° | 300/32 -40° | 300/36 -52° |
| LCH | used from 697 nm out; 90 nm from the line | 160/21 | 160/18 18° | 180/13 12° | 230/6 8° | 280/10 -4° | 260/13 -14° | 310/29 -30° | 320/32 -40° | 330/33 -53° |
| HOU | used from 747 nm out; 42 nm from the line | 160/22 | 150/27 19° | 180/16 14° | 250/7 9° | 270/10 -5° | 270/16 -13° | 310/23 -29° | 310/26 -40° | 330/20 -52° |
| PSX | used from 847 nm out; 22 nm from the line | 160/24 | 160/23 19° | 180/14 15° | 210/11 9° | 240/8 -4° | 250/8 -13° | 320/14 -29° | 300/16 -40° | 340/17 -51° |
| CRP | used from 946 nm out; 52 nm from the line | 150/24 | 180/19 19° | 190/13 14° | 200/14 9° | 230/5 -4° | 170/6 -14° | 360/6 -29° | L/V -40° | 350/18 -52° |
| BRO | used from 996 nm out; 45 nm from the line | 150/22 | 160/18 18° | 160/13 14° | 150/9 10° | 050/5 -3° | L/V -15° | 100/13 -29° | 120/15 -40° | 080/9 -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 |
|---|---|---|---|---|---|---|---|
| GYY Gary/Chicago, IN | departure | VFR | calm | 9 mi | none | 596 ft | 8:50 pm CDT (01:50 UTC) |
| CMI Champaign/Urbana, IL | 100 nm out, 15 nm southeast of the line, tower | VFR | from the south (180°) at 5 knots | 10+ mi | none | 754 ft | 01:53 UTC |
| DEC Decatur, IL | 129 nm out, 5 nm north of the line, tower | VFR | from the south (190°) at 4 knots | 9 mi | none | 681 ft | 01:54 UTC |
| BLV Belleville, IL | 219 nm out, 5 nm north of the line, tower | VFR | calm | 10+ mi | none | 459 ft | 01:55 UTC |
| BVX Batesville, AR | 408 nm out, 3 nm northeast of the line | VFR | from the southeast (130°) at 3 knots | 10+ mi | none | 465 ft | 01:56 UTC |
| LIT Little Rock, AR | 468 nm out, 6 nm southeast of the line, tower | VFR Sky: a few clouds at 16,000 feet, a few clouds at 25,000 feet | calm | 10+ mi | none | 266 ft | 01:53 UTC |
| SHV Shreveport, LA | 627 nm out, 4 nm west of the line, tower | VFR Sky: scattered clouds at 30,000 feet | from the south (180°) at 4 knots | 10+ mi | none | 257 ft | 01:56 UTC |
| LFK Lufkin, TX | 717 nm out, 13 nm northwest of the line | VFR | from the south-southeast (160°) at 8 knots | 10+ mi | none | 295 ft | 01:53 UTC |
| HOU Houston, TX | 817 nm out, 6 nm east of the line, tower | VFR Sky: a few clouds at 25,000 feet | from the southeast (140°) at 6 knots | 10+ mi | none | 46 ft | 01:53 UTC |
| BYY Bay City, TX | 866 nm out, 5 nm northwest of the line | VFR | from the east-southeast (110°) at 5 knots | 9 mi | none | 44 ft | 02:15 UTC |
| PIL Port Isabel, TX | 1046 nm out, 5 nm southwest of the line | VFR Sky: a broken layer at 5,000 feet | from the east-southeast (110°) at 9 knots | 10+ mi | 5,000 ft | 18 ft | 01:53 UTC |
| BRO Brownsville, TX | destination | VFR Sky: scattered clouds at 3,600 feet, overcast at 5,000 feet | from the east-southeast (120°) at 8 knots | 10+ mi | 5,000 ft | 22 ft | 8:53 pm CDT (01:53 UTC) |
The highest airport on this list sits at 754 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BRO when you get there the forecast at the estimated arrival, 6:08 am CDT (11:08 UTC)
Wind from the southeast at 8 knots, visibility more than 6 miles, a few clouds at 3,000 feet VFR
The whole forecast for BRO
- From Sun 7:00 pm CDT (00:00 UTC): wind from the southeast at 8 knots, visibility more than 6 miles, a few clouds at 3,000 feet
- From Mon 11:00 am CDT (16:00 UTC): wind from the south-southeast at 14 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 4,500 feet
The forecast for GYY, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind calm, visibility more than 6 miles, clear skies
- From Mon 2:00 am CDT (07:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 12:00 pm CDT (17:00 UTC): wind from the south-southwest at 12 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 20,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 5/6914 South Padre Island, TX, Tuesday, May 6, 2025 Local 9 nm from the route, at the destination end · security · ended 6 May · ZHU
- 5/3679 Brownsville, TX, Thursday, January 1, 2026 through Friday, January 1, 2027 Local 8 nm from the route, at the destination end · security · until 1 January · ZHU
- 5/3678 Brownsville, TX, Thursday, January 1, 2026 through Friday, January 1, 2027 Local 6 nm from the route, at the destination end · security · until 1 January · ZHU
Daylight
Sunset at GYY 6:13 pm CDT (23:13 UTC), at BRO 7:05 pm CDT (00:05 UTC) (civil twilight ends 7:28 pm CDT (00:28 UTC)). At 120 knots the arrival at BRO is before sunrise there (7:26 am CDT (12:26 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: Gary/Chicago International, Brownsville/South Padre Island International.