Stillwater Regional to Easterwood Field SWO → CLL
337 nautical miles (387 statute miles) south on a straight line, true course 174°, about 169° magnetic at the departure end (variation 5E). At 120 knots that is 2 h 28 min at the quickest height in today's winds (39,000 ft, a 17-knot tailwind), arriving about 3:40 am CDT (08:40 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: 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
- AIRMET TANGO 3W: 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 first 69 nm of the route.
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 SWO.
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 3 forecast points nearest it (OKC, DAL, CLL). 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 | 190° at 30 kt | +28 kt | 92 kt | 3 h 40 min | 4:52 am CDT (09:52 UTC) | |
| 5,500 ft | 210° at 25 kt | +21 kt | 99 kt | 3 h 24 min | 4:36 am CDT (09:36 UTC) | |
| 7,500 ft | 210° at 19 kt | +15 kt | 16 °C | 105 kt | 3 h 13 min | 4:25 am CDT (09:25 UTC) |
| 9,500 ft | 220° at 15 kt | +9 kt | 13 °C | 111 kt | 3 h 02 min | 4:14 am CDT (09:14 UTC) |
| 11,500 ft | 240° at 14 kt | +5 kt | 9 °C | 115 kt | 2 h 56 min | 4:08 am CDT (09:08 UTC) |
| 13,500 ft | 240° at 15 kt | +5 kt | 5 °C | 115 kt | 2 h 56 min | 4:08 am CDT (09:08 UTC) |
| 15,500 ft | 240° at 16 kt | +7 kt | 0 °C | 113 kt | 2 h 59 min | 4:11 am CDT (09:11 UTC) |
| 17,500 ft | 240° at 17 kt | +8 kt | -4 °C | 112 kt | 3 h 01 min | 4:13 am CDT (09:13 UTC) |
| 18,000 ft FL180 | 240° at 18 kt | +8 kt | -5 °C | 112 kt | 3 h 01 min | 4:13 am CDT (09:13 UTC) |
| 24,000 ft FL240 | 250° at 20 kt | +5 kt | -15 °C | 115 kt | 2 h 56 min | 4:08 am CDT (09:08 UTC) |
| 30,000 ft FL300 | 270° at 35 kt | −4 kt | -29 °C | 124 kt | 2 h 43 min | 3:55 am CDT (08:55 UTC) |
| 34,000 ft FL340 | 280° at 34 kt | −8 kt | -39 °C | 128 kt | 2 h 38 min | 3:50 am CDT (08:50 UTC) |
| 39,000 ft FL390 | 290° at 35 kt | −17 kt | -51 °C | 137 kt | 2 h 28 min | 3:40 am CDT (08:40 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; 35 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° |
| DAL | used from 99 nm out; 76 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 247 nm out; 64 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° |
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 |
|---|---|---|---|---|---|---|---|
| SWO Stillwater, OK | departure | no report just now | 1,000 ft | ||||
| CQB Chandler, OK | 30 nm out, 10 nm east of the line | no report just now | 985 ft | ||||
| SNL Shawnee, OK | 49 nm out, 2 nm northeast of the line | no report just now | 1,073 ft | ||||
| ADM Ardmore, OK | 109 nm out, 9 nm west of the line, tower | no report just now | 776 ft | ||||
| GYI Sherman/Denison, TX | 148 nm out, 4 nm east of the line, tower | no report just now | 749 ft | ||||
| HQZ Mesquite, TX | 208 nm out, 5 nm east of the line, tower | no report just now | 446 ft | ||||
| LNC Lancaster, TX | 218 nm out, 6 nm west of the line | no report just now | 501 ft | ||||
| LXY Mexia, TX | 277 nm out, 4 nm north of the line | no report just now | 544 ft | ||||
| LHB Hearne, TX | 317 nm out, 12 nm west of the line | no report just now | 284 ft | ||||
| CLL College Station, TX | destination | no report just now | 320 ft |
The highest airport on this list sits at 1,073 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At CLL when you get there the forecast at the estimated arrival, 3:40 am CDT (08:40 UTC)
CLL 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 7 nm from the route, 198 nm along the route · a VIP movement · ZFW
- 6/8646 Arlington, TX, Thursday, October 15, 2026 through Friday, October 16, 2026 UTC 23 nm from the route, 208 nm along the route · drones kept away from a public gathering · starts Thursday 15 October · ZFW
Daylight
Sunset at SWO 6:56 pm CDT (23:56 UTC), at CLL 6:57 pm CDT (23:57 UTC) (civil twilight ends 7:21 pm CDT (00:21 UTC)). At 120 knots the arrival at CLL is before sunrise there (7:25 am CDT (12:25 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: Stillwater Regional, Easterwood Field.