Gary/Chicago International to Dallas-Fort Worth International GYY → DFW
696 nautical miles (801 statute miles) southwest on a straight line, true course 224°, about 226° magnetic at the departure end (variation 2W). At 120 knots that is 6 h 34 min at the quickest height in today's winds (12,500 ft, a 14-knot headwind), arriving about 5:12 am CDT (10:12 UTC), after sunset at the destination. 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: 1 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 SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Near the route, at the departure end.
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 7 forecast points nearest it (JOT, SPI, STL, COU, SGF, FSM, DAL). 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 | 230° at 24 kt | +24 kt | 96 kt | 7 h 15 min | 5:53 am CDT (10:53 UTC) | |
| 6,500 ft | 240° at 23 kt | +21 kt | 15 °C | 99 kt | 7 h 02 min | 5:40 am CDT (10:40 UTC) |
| 8,500 ft | 250° at 20 kt | +18 kt | 12 °C | 102 kt | 6 h 49 min | 5:27 am CDT (10:27 UTC) |
| 10,500 ft | 250° at 17 kt | +15 kt | 9 °C | 105 kt | 6 h 38 min | 5:16 am CDT (10:16 UTC) |
| 12,500 ft | 250° at 16 kt | +14 kt | 6 °C | 106 kt | 6 h 34 min | 5:12 am CDT (10:12 UTC) |
| 14,500 ft | 250° at 17 kt | +15 kt | 1 °C | 105 kt | 6 h 38 min | 5:16 am CDT (10:16 UTC) |
| 16,500 ft | 260° at 19 kt | +16 kt | -3 °C | 104 kt | 6 h 42 min | 5:20 am CDT (10:20 UTC) |
| 18,000 ft FL180 | 260° at 20 kt | +16 kt | -6 °C | 104 kt | 6 h 42 min | 5:20 am CDT (10:20 UTC) |
| 24,000 ft FL240 | 260° at 26 kt | +20 kt | -17 °C | 100 kt | 6 h 58 min | 5:36 am CDT (10:36 UTC) |
| 30,000 ft FL300 | 280° at 36 kt | +19 kt | -31 °C | 101 kt | 6 h 53 min | 5:31 am CDT (10:31 UTC) |
| 34,000 ft FL340 | 280° at 45 kt | +21 kt | -41 °C | 99 kt | 7 h 02 min | 5:40 am CDT (10:40 UTC) |
| 39,000 ft FL390 | 290° at 48 kt | +14 kt | -51 °C | 106 kt | 6 h 34 min | 5:12 am CDT (10:12 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; 21 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 99 nm out; 24 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; 20 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° |
| COU | used from 249 nm out; 48 nm from the line | 230/31 | 230/30 15° | 260/16 11° | 270/14 6° | 260/24 -6° | 270/27 -18° | 270/37 -32° | 280/49 -41° | 290/56 -51° |
| SGF | used from 298 nm out; 64 nm from the line | 230/33 | 230/28 15° | 250/20 13° | 240/18 7° | 250/20 -6° | 250/24 -17° | 280/42 -31° | 280/49 -40° | 290/46 -51° |
| FSM | used from 447 nm out; 28 nm from the line | 210/27 | 250/23 16° | 250/20 13° | 240/17 8° | 250/18 -6° | 260/31 -16° | 280/42 -30° | 280/44 -40° | 290/38 -51° |
| DAL | used from 596 nm out; 72 nm from the line | 190/29 | 220/23 17° | 220/17 13° | 250/18 8° | 230/18 -5° | 240/18 -15° | 270/34 -29° | 280/33 -39° | 300/36 -51° |
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 | no report just now | 596 ft | ||||
| LOT Chicago/Romeoville, IL | 20 nm out, 22 nm northwest of the line, tower | no report just now | 679 ft | ||||
| BMI Bloomington/Normal, IL | 99 nm out, 3 nm north of the line, tower | no report just now | 871 ft | ||||
| SPI Springfield, IL | 149 nm out, 2 nm north of the line, tower | no report just now | 597 ft | ||||
| SUS St Louis, MO | 229 nm out, 14 nm southeast of the line, tower | no report just now | 463 ft | ||||
| TBN Fort Leonard Wood, MO | 318 nm out, 2 nm west of the line, tower | no report just now | 1,159 ft | ||||
| BBG Branson, MO | 408 nm out, 7 nm southeast of the line, tower | no report just now | 1,302 ft | ||||
| FYV Fayetteville, AR | 457 nm out, 9 nm west of the line, tower | no report just now | 1,252 ft | ||||
| FSM Fort Smith, AR | 497 nm out, 10 nm southeast of the line, tower | no report just now | 469 ft | ||||
| DUA Durant, OK | 626 nm out, 14 nm northwest of the line | no report just now | 699 ft | ||||
| TKI Dallas, TX | 666 nm out, 8 nm southeast of the line, tower | no report just now | 588 ft | ||||
| DFW Dallas-Fort Worth, TX | destination | no report just now | 606 ft |
The highest airport on this list sits at 1,302 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At DFW when you get there the forecast at the estimated arrival, 5:12 am CDT (10:12 UTC)
DFW has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 9/2934 DALLAS, TX 9 nm from the route, at the destination end · a VIP movement · ZFW
- 6/8646 Arlington, TX, Thursday, October 15, 2026 through Friday, October 16, 2026 UTC 8 nm from the route, at the destination end · drones kept away from a public gathering · starts Thursday 15 October · ZFW
Daylight
Sunset at GYY 6:13 pm CDT (23:13 UTC), at DFW 6:58 pm CDT (23:58 UTC) (civil twilight ends 7:23 pm CDT (00:23 UTC)). At 120 knots the arrival at DFW is before sunrise there (7:29 am CDT (12:29 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, Dallas-Fort Worth International.