Okc Will Rogers International to Valley International OKC → HRL
550 nautical miles (633 statute miles) south on a straight line, true course 180°, about 176° magnetic at the departure end (variation 4E). At 120 knots that is 4 h 06 min at the quickest height in today's winds (39,000 ft, a 14-knot tailwind), arriving about 1:50 am CDT (06:50 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: 4 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 OKC.
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 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 7 forecast points nearest it (OKC, SPS, DAL, CLL, SAT, 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 |
|---|---|---|---|---|---|---|
| 3,500 ft | 180° at 25 kt | +25 kt | 95 kt | 5 h 47 min | 3:31 am CDT (08:31 UTC) | |
| 5,500 ft | 190° at 21 kt | +20 kt | 100 kt | 5 h 30 min | 3:14 am CDT (08:14 UTC) | |
| 7,500 ft | 200° at 18 kt | +16 kt | 16 °C | 104 kt | 5 h 17 min | 3:01 am CDT (08:01 UTC) |
| 9,500 ft | 210° at 14 kt | +13 kt | 13 °C | 107 kt | 5 h 08 min | 2:52 am CDT (07:52 UTC) |
| 11,500 ft | 220° at 13 kt | +10 kt | 10 °C | 110 kt | 5 h | 2:44 am CDT (07:44 UTC) |
| 13,500 ft | 230° at 12 kt | +9 kt | 6 °C | 111 kt | 4 h 57 min | 2:41 am CDT (07:41 UTC) |
| 15,500 ft | 230° at 12 kt | +8 kt | 1 °C | 112 kt | 4 h 55 min | 2:39 am CDT (07:39 UTC) |
| 17,500 ft | 230° at 12 kt | +7 kt | -4 °C | 113 kt | 4 h 52 min | 2:36 am CDT (07:36 UTC) |
| 18,000 ft FL180 | 230° at 12 kt | +7 kt | -5 °C | 113 kt | 4 h 52 min | 2:36 am CDT (07:36 UTC) |
| 24,000 ft FL240 | 240° at 13 kt | +7 kt | -14 °C | 113 kt | 4 h 52 min | 2:36 am CDT (07:36 UTC) |
| 30,000 ft FL300 | 270° at 20 kt | 0 | -29 °C | 120 kt | 4 h 35 min | 2:19 am CDT (07:19 UTC) |
| 34,000 ft FL340 | 270° at 18 kt | −1 kt | -39 °C | 121 kt | 4 h 33 min | 2:17 am CDT (07:17 UTC) |
| 39,000 ft FL390 | 310° at 24 kt | −14 kt | -51 °C | 134 kt | 4 h 06 min | 1:50 am CDT (06:50 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| OKC | used from 0 nm out; 25 nm from the line | 200/44 | 230/32 18° | 240/13 15° | 240/10 9° | 240/20 -5° | 250/27 -16° | 260/47 -28° | 270/48 -39° | 270/45 -50° |
| SPS | used from 49 nm out; 45 nm from the line | 200/39 | 220/28 17° | 230/27 12° | 240/15 9° | 250/15 -4° | 250/24 -15° | 260/45 -28° | 270/43 -39° | 280/45 -51° |
| DAL | used from 98 nm out; 49 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° |
| CLL | used from 246 nm out; 68 nm from the line | 170/22 | 170/26 18° | 200/15 14° | 240/13 8° | 240/15 -5° | 260/17 -13° | 290/27 -29° | 290/22 -40° | 320/30 -51° |
| SAT | used from 295 nm out; 54 nm from the line | 150/26 | 180/18 19° | 180/18 14° | 200/14 9° | 230/16 -6° | 210/9 -13° | 270/8 -29° | 280/6 -39° | 340/19 -51° |
| CRP | used from 393 nm out; 41 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 491 nm out; 55 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 |
|---|---|---|---|---|---|---|---|
| OKC Oklahoma City, OK | departure | no report just now | 1,295 ft | ||||
| CHK Chickasha, OK | 20 nm out, 18 nm west of the line | no report just now | 1,151 ft | ||||
| DUC Duncan, OK | 59 nm out, 18 nm west of the line | no report just now | 1,114 ft | ||||
| FTW Fort Worth, TX | 157 nm out, 13 nm east of the line, tower | no report just now | 710 ft | ||||
| FWS Fort Worth, TX | 167 nm out, 16 nm east of the line, tower | no report just now | 700 ft | ||||
| GRK Fort Hood (Killeen), TX | 256 nm out, 11 nm west of the line, tower | no report just now | 1,015 ft | ||||
| AUS Austin, TX | 314 nm out, 3 nm northwest of the line, tower | no report just now | 541 ft | ||||
| HYI Austin, TX | 334 nm out, 12 nm west of the line, tower | no report just now | 594 ft | ||||
| BEA Beeville, TX | 423 nm out, 8 nm west of the line | no report just now | 272 ft | ||||
| CRP Corpus Christi, TX | 462 nm out, 9 nm northeast of the line, tower | no report just now | 46 ft | ||||
| HRL Harlingen, TX | destination | no report just now | 36 ft |
The highest airport on this list sits at 1,295 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At HRL when you get there the forecast at the estimated arrival, 1:50 am CDT (06:50 UTC)
HRL has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/0543 MCGREGOR, TX 8 nm from the route, 236 nm along the route · security · ZFW
- 6/5849 Austin, TX, Friday, October 2, 2026 through Monday, October 12, 2026 UTC 7 nm from the route, 305 nm along the route · drones kept away from a public gathering · until 12 October · ZHU
Daylight
Sunset at OKC 6:59 pm CDT (23:59 UTC), at HRL 7:05 pm CDT (00:05 UTC) (civil twilight ends 7:29 pm CDT (00:29 UTC)). At 120 knots the arrival at HRL is before sunrise there (7:28 am CDT (12:28 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: Okc Will Rogers International, Valley International.