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Plan a flight · Mon 8:09 am CDT (13:09 UTC)

Dallas Love Field to Boeing Fld/King County International DAL → BFI

1,452 nautical miles (1,670 statute miles) northwest on a straight line, true course 315°, about 312° magnetic at the departure end (variation 3E). At 120 knots that is 12 h 06 min at the quickest height in today's winds (18,000 ft, no wind along the track), arriving about 6:15 pm PDT (01:15 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 return flight

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

  • SIGMET W25W: thunderstorms (a convective SIGMET) up to 27,000 ft, moving from the west at 45 knots, until 9:55 am CDT (14:55 UTC). Over the route from 895 to 895 nm out.
    as issued
    WSUS33 KKCI 121255
    MKCW WST 121255
    CONVECTIVE SIGMET 25W
    VALID UNTIL 1455Z
    WY UT ID
    FROM PIH-40W BPI-30SE SLC-40E BVL-PIH
    AREA TS MOV FROM 26045KT. TOPS TO FL270.
  • AIRMET TANGO 2W: 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 109 to 298 nm out.
  • AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 447 to 795 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 497 to 537 nm out.
  • AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 507 to 696 nm out.
  • AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 597 to 1273 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 656 to 736 nm out.
  • AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 656 to 1104 nm out.
  • AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 706 to 726 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 935 to 1193 nm out.
  • AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the route from 1114 to 1263 nm out.
  • AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 1133 to 1422 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 DAL.

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 08:00–15:00 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 14 forecast points nearest it (DAL, SPS, GAG, AMA, GCK, PUB, DEN, GJT, RKS, PIH, BOI, LWS, YKM, SEA). A plus sign is a headwind, a minus sign a tailwind.

HeightAverage windHead- or tailwindTemperatureGround speedTime en routeArrival
4,500 ft240° at 12 kt+2 kt14 °C118 kt12 h 18 min6:27 pm PDT (01:27 UTC)
6,500 ft240° at 11 kt+2 kt7 °C118 kt12 h 18 min6:27 pm PDT (01:27 UTC)
8,500 ft250° at 14 kt+5 kt6 °C115 kt12 h 38 min6:47 pm PDT (01:47 UTC)
10,500 ft240° at 14 kt+3 kt2 °C117 kt12 h 25 min6:34 pm PDT (01:34 UTC)
12,500 ft230° at 15 kt+1 kt-1 °C119 kt12 h 12 min6:21 pm PDT (01:21 UTC)
14,500 ft220° at 19 kt+1 kt-5 °C119 kt12 h 12 min6:21 pm PDT (01:21 UTC)
16,500 ft220° at 22 kt+1 kt-10 °C119 kt12 h 12 min6:21 pm PDT (01:21 UTC)
18,000 ft FL180220° at 25 kt0-13 °C120 kt12 h 06 min6:15 pm PDT (01:15 UTC)
24,000 ft FL240230° at 31 kt+4 kt-23 °C116 kt12 h 31 min6:40 pm PDT (01:40 UTC)
30,000 ft FL300240° at 43 kt+14 kt-31 °C106 kt13 h 42 min7:51 pm PDT (02:51 UTC)
34,000 ft FL340250° at 44 kt+20 kt-37 °C100 kt14 h 31 min8:40 pm PDT (03:40 UTC)
39,000 ft FL390250° at 42 kt+22 kt-45 °C98 kt14 h 49 min8:58 pm PDT (03:58 UTC)

Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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
PointFrom3,0006,0009,00012,00018,00024,00030,00034,00039,000
DALused from 0 nm out; 25 nm from the line190/30200/28 18°220/18 13°250/13 8°240/24 -6°270/20 -14°270/35 -29°290/34 -39°310/41 -51°
SPSused from 50 nm out; 33 nm from the line220/35220/31 18°230/16 14°230/10 8°250/18 -5°250/32 -16°260/51 -28°280/46 -38°300/50 -50°
GAGused from 199 nm out; 54 nm from the line240/35 22°240/27 14°230/25 6°240/38 -7°230/44 -19°250/73 -28°270/66 -37°270/58 -49°
AMAused from 298 nm out; 80 nm from the line230/32230/28 14°230/27 7°230/38 -6°230/50 -17°250/69 -28°260/62 -37°270/65 -49°
GCKused from 348 nm out; 92 nm from the line240/40 22°240/40 14°240/38 7°230/39 -7°230/45 -20°250/73 -28°260/74 -36°260/64 -49°
PUBused from 398 nm out; 74 nm from the line260/45 11°240/38 6°230/47 -8°230/51 -19°240/74 -29°240/82 -35°250/72 -48°
DENused from 547 nm out; 54 nm from the line270/24 11°230/13 5°230/48 -8°230/46 -20°230/63 -30°240/78 -36°240/78 -48°
GJTused from 646 nm out; 93 nm from the line220/26 6°230/39 0°220/55 -13°230/60 -23°230/78 -31°230/80 -35°230/74 -44°
RKSused from 696 nm out; 64 nm from the line250/9230/21 -1°210/43 -14°220/59 -23°220/55 -32°220/53 -35°220/48 -44°
PIHused from 895 nm out; 43 nm from the line070/8150/19 1°180/32 -4°210/44 -17°210/37 -28°210/74 -31°220/68 -35°220/60 -43°
BOIused from 1044 nm out; 87 nm from the line320/11 1°280/8 -5°220/14 -11°200/60 -19°190/66 -31°210/46 -32°220/50 -33°220/43 -39°
LWSused from 1143 nm out; 78 nm from the lineL/V340/5 -3°L/V -6°040/7 -10°100/23 -22°180/30 -31°190/11 -34°200/11 -36°220/23 -40°
YKMused from 1292 nm out; 46 nm from the line360/6360/11 -1°030/20 -7°040/21 -11°020/55 -18°010/84 -26°010/79 -40°010/45 -42°350/23 -42°
SEAused from 1392 nm out; 33 nm from the line350/5010/6 0°010/9 -4°010/27 -6°010/51 -15°360/58 -26°360/60 -41°350/55 -48°340/30 -45°

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

AirportWhereConditionsWindVisibilityCeilingElevationReported
DAL Dallas, TX departure no report just now 486 ft
DTO Denton, TX 30 nm out, 4 nm east of the line, tower no report just now 642 ft
AXS Altus, OK 169 nm out, 7 nm southwest of the line no report just now 1,433 ft
GUY Guymon, OK 328 nm out, 9 nm northeast of the line no report just now 3,125 ft
COS Colorado Springs, CO 527 nm out, 6 nm east of the line, tower no report just now 6,187 ft
EGE Eagle, CO 636 nm out, 23 nm southwest of the line, tower no report just now 6,547 ft
RKS Rock Springs, WY 785 nm out, 9 nm northeast of the line no report just now 6,764 ft
PIH Pocatello, ID 954 nm out, 20 nm southwest of the line, tower no report just now 4,451 ft
MYL Mc Call, ID 1153 nm out, 7 nm south of the line no report just now 5,024 ft
PSC Pasco, WA 1302 nm out, 3 nm south of the line, tower no report just now 410 ft
YKM Yakima, WA 1362 nm out, 16 nm southwest of the line, tower no report just now 1,098 ft
BFI Seattle, WA destination no report just now 21 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 BFI when you get there the forecast at the estimated arrival, 6:15 pm PDT (01:15 UTC)

BFI 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 2 nm from the route, at the departure 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 departure end · drones kept away from a public gathering · starts Thursday 15 October · ZFW
  • 6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 7 nm from the route, 557 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV

Daylight

Sunset at DAL 6:58 pm CDT (23:58 UTC), at BFI 6:25 pm PDT (01:25 UTC) (civil twilight ends 6:56 pm PDT (01:56 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

Radar now, the southern Plains
Radar now, the southern Plains · loop National Weather Service
Radar now, the southern Rockies
Radar now, the southern Rockies · loop National Weather Service
Radar now, the northern Rockies
Radar now, the northern Rockies · loop National Weather Service
Radar, the whole country
Radar, the whole country · loop National Weather Service
Surface analysis now
Surface analysis now Weather Prediction Center
Forecast chart, 12 hours ahead
Forecast chart, 12 hours ahead Weather Prediction Center
Forecast chart, 24 hours ahead
Forecast chart, 24 hours ahead Weather Prediction Center

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: Dallas Love Field, Boeing Fld/King County International.