Boeing Fld/King County International to Dallas Love Field BFI → DAL
1,452 nautical miles (1,670 statute miles) southeast on a straight line, true course 118°, about 103° magnetic at the departure end (variation 15E). At 120 knots that is 10 h 36 min at the quickest height in today's winds (34,000 ft, a 17-knot tailwind), arriving about 1:37 pm CDT (18:37 UTC). 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: 7 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 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 30 to 428 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 159 to 249 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 199 to 835 nm out.
- AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 308 to 507 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 437 to 825 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 597 to 1024 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 42,000 ft. Over the route from 636 to 1004 nm out.
- AIRMET TANGO 1W: 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 route from 716 to 945 nm out.
- 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 route from 1104 to 1342 nm out.
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 BFI.
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 14 forecast points nearest it (SEA, YKM, LWS, BOI, PIH, RKS, GJT, DEN, PUB, GCK, AMA, GAG, SPS, 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 |
|---|---|---|---|---|---|---|
| 5,500 ft | 210° at 11 kt | +3 kt | 13 °C | 117 kt | 12 h 25 min | 3:26 pm CDT (20:26 UTC) |
| 7,500 ft | 220° at 16 kt | 0 | 8 °C | 120 kt | 12 h 06 min | 3:07 pm CDT (20:07 UTC) |
| 9,500 ft | 230° at 16 kt | −2 kt | 4 °C | 122 kt | 11 h 54 min | 2:55 pm CDT (19:55 UTC) |
| 11,500 ft | 240° at 17 kt | −4 kt | 1 °C | 124 kt | 11 h 43 min | 2:44 pm CDT (19:44 UTC) |
| 13,500 ft | 230° at 20 kt | −4 kt | -3 °C | 124 kt | 11 h 43 min | 2:44 pm CDT (19:44 UTC) |
| 15,500 ft | 220° at 22 kt | −2 kt | -7 °C | 122 kt | 11 h 54 min | 2:55 pm CDT (19:55 UTC) |
| 17,500 ft | 220° at 25 kt | 0 | -11 °C | 120 kt | 12 h 06 min | 3:07 pm CDT (20:07 UTC) |
| 18,000 ft FL180 | 220° at 26 kt | 0 | -12 °C | 120 kt | 12 h 06 min | 3:07 pm CDT (20:07 UTC) |
| 24,000 ft FL240 | 220° at 32 kt | 0 | -23 °C | 120 kt | 12 h 06 min | 3:07 pm CDT (20:07 UTC) |
| 30,000 ft FL300 | 240° at 43 kt | −13 kt | -30 °C | 133 kt | 10 h 55 min | 1:56 pm CDT (18:56 UTC) |
| 34,000 ft FL340 | 240° at 44 kt | −17 kt | -36 °C | 137 kt | 10 h 36 min | 1:37 pm CDT (18:37 UTC) |
| 39,000 ft FL390 | 240° at 41 kt | −17 kt | -45 °C | 137 kt | 10 h 36 min | 1:37 pm CDT (18:37 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SEA | used from 0 nm out; 23 nm from the line | 050/7 | 050/11 1° | 050/12 -5° | 030/31 -7° | 010/61 -15° | 010/69 -26° | 360/73 -40° | 360/62 -47° | 330/21 -43° |
| YKM | used from 50 nm out; 23 nm from the line | 070/10 | 040/15 -1° | 020/27 -8° | 030/25 -13° | 020/48 -20° | 010/83 -27° | 010/77 -37° | 010/49 -40° | 350/14 -41° |
| LWS | used from 149 nm out; 69 nm from the line | 070/10 | 080/12 -2° | 030/12 -6° | 080/7 -10° | 170/34 -21° | 160/46 -32° | 200/33 -35° | 220/22 -35° | 230/18 -38° |
| BOI | used from 298 nm out; 78 nm from the line | 300/7 2° | 280/5 -4° | 210/16 -9° | 210/60 -20° | 210/75 -29° | 210/63 -32° | 220/64 -32° | 220/54 -39° | |
| PIH | used from 398 nm out; 75 nm from the line | L/V | 240/13 1° | 240/15 -3° | 210/42 -15° | 200/70 -25° | 220/74 -29° | 220/71 -36° | 220/62 -43° | |
| RKS | used from 597 nm out; 47 nm from the line | 200/41 | 220/44 1° | 220/35 -11° | 220/46 -24° | 210/53 -27° | 220/62 -35° | 230/61 -44° | ||
| GJT | used from 746 nm out; 94 nm from the line | 210/43 7° | 230/45 1° | 220/49 -12° | 220/62 -22° | 220/59 -28° | 230/60 -33° | 220/55 -45° | ||
| DEN | used from 795 nm out; 87 nm from the line | 240/21 14° | 250/44 6° | 220/49 -8° | 220/49 -21° | 230/54 -30° | 240/57 -35° | 240/49 -45° | ||
| PUB | used from 895 nm out; 38 nm from the line | 230/25 13° | 230/32 6° | 220/44 -8° | 230/49 -21° | 240/70 -28° | 240/67 -34° | 240/58 -46° | ||
| GCK | used from 1044 nm out; 96 nm from the line | 220/48 21° | 230/37 14° | 250/30 8° | 230/37 -6° | 240/37 -20° | 240/69 -28° | 250/67 -37° | 260/58 -48° | |
| AMA | used from 1094 nm out; 87 nm from the line | 210/38 | 230/29 14° | 240/29 7° | 220/27 -5° | 240/37 -18° | 240/66 -28° | 250/59 -37° | 260/47 -49° | |
| GAG | used from 1143 nm out; 60 nm from the line | 220/40 19° | 230/28 14° | 240/23 8° | 230/21 -6° | 240/31 -19° | 250/66 -29° | 260/58 -38° | 260/47 -49° | |
| SPS | used from 1243 nm out; 78 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 1392 nm out; 35 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 |
|---|---|---|---|---|---|---|---|
| BFI Seattle, WA | departure | no report just now | 21 ft | ||||
| YKM Yakima, WA | 89 nm out, 16 nm southwest of the line, tower | no report just now | 1,098 ft | ||||
| PSC Pasco, WA | 149 nm out, 3 nm south of the line, tower | no report just now | 410 ft | ||||
| MYL Mc Call, ID | 298 nm out, 7 nm south of the line | no report just now | 5,024 ft | ||||
| PIH Pocatello, ID | 497 nm out, 20 nm southwest of the line, tower | no report just now | 4,451 ft | ||||
| RKS Rock Springs, WY | 666 nm out, 9 nm northeast of the line | no report just now | 6,764 ft | ||||
| EGE Eagle, CO | 815 nm out, 23 nm southwest of the line, tower | no report just now | 6,547 ft | ||||
| COS Colorado Springs, CO | 925 nm out, 6 nm east of the line, tower | no report just now | 6,187 ft | ||||
| GUY Guymon, OK | 1123 nm out, 9 nm northeast of the line | no report just now | 3,125 ft | ||||
| AXS Altus, OK | 1283 nm out, 7 nm southwest of the line | no report just now | 1,433 ft | ||||
| DTO Denton, TX | 1422 nm out, 4 nm east of the line, tower | no report just now | 642 ft | ||||
| DAL Dallas, TX | destination | no report just now | 486 ft |
The highest airport on this list sits at 6,764 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At DAL when you get there the forecast at the estimated arrival, 1:37 pm CDT (18:37 UTC)
DAL has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 7 nm from the route, 895 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
- 9/2934 DALLAS, TX 2 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 13 nm from the route, at the destination end · drones kept away from a public gathering · starts Thursday 15 October · ZFW
Daylight
Sunset at BFI 6:25 pm PDT (01:25 UTC), at DAL 6:58 pm CDT (23:58 UTC) (civil twilight ends 7:22 pm CDT (00:22 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: Boeing Fld/King County International, Dallas Love Field.