Plan a flight · Mon 4:53 am PDT (11:53 UTC)

Boeing Fld/King County International to Melbourne Orlando International BFI → MLB

2,257 nautical miles (2,597 statute miles) east on a straight line, true course 106°, about 091° magnetic at the departure end (variation 15E). At 120 knots that is 15 h 03 min at the quickest height in today's winds (34,000 ft, a 30-knot tailwind), arriving about 10:56 pm EDT (02:56 UTC), after sunset at the destination. Right now BFI is VFR, wind calm; MLB is VFR, wind from the west-northwest (300°) at 4 knots. 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 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 30 to 329 nm out.
AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the route from 170 to 439 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 190 to 649 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 250 to 649 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 449 to 659 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 709 to 919 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 719 to 839 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Near the route, 789 nm along the route.
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 1028 to 1458 nm out.
AIRMET SIERRA 1E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, mist, fog). Over the route from 1707 to 1877 nm out.
AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 30,000 ft to 41,000 ft. Over the route from 2027 to 2187 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

BE9L at 17,000 ft, 11 nm southwest, 2:42 am PDT (09:42 UTC): light rime icing from 15,000 ft to 17,000 ft, 0 °C, remarks: zdvwc. 709 nm along the route, 11 nm southwest of the line.
as filed, and in English
```
CPR UA /OV DDY250025/TM 0942/FL170/TP BE9L/TA 00/IC LGT RIME 150-170/RM ZDVWC
```
Report
a routine report filed through CPR
Where
25 nm west (250°) of DDY
Time
09:42 UTC
Height
at 17,000 ft
Aircraft
BE9L
Temperature
0 °C
Icing
light rime from 15,000 ft to 17,000 ft
Remarks
zdvwc
E55P at 1,000 ft, 27 nm southwest, 4:04 am PDT (11:04 UTC): clear, remarks: fog. 2017 nm along the route, 27 nm southwest of the line.
as filed, and in English
```
TLH UA /OV TLH/TM 1104/FL010/TP E55P/SK CLR/RM FG
```
Report
a routine report filed through TLH
Where
over TLH
Time
11:04 UTC
Height
at 1,000 ft
Aircraft
E55P
Sky
clear
Remarks
fog
E170 at 2,000 ft, 27 nm southwest, 3:05 am PDT (10:05 UTC): clear, remarks: ground fog. 2017 nm along the route, 27 nm southwest of the line.
as filed, and in English
```
TLH UA /OV TLH/TM 1005/FL20/TP E170/SK CLR/RM GROUND FOG
```
Report
a routine report filed through TLH
Where
over TLH
Time
10:05 UTC
Height
at 2,000 ft
Aircraft
E170
Sky
clear
Remarks
ground fog
B739 at 34,000 ft, 13 nm southwest, 3:53 am PDT (10:53 UTC): light to moderate turbulence. 2067 nm along the route, 13 nm southwest of the line.
as filed, and in English
```
TLH UA /OV SZW120050/TM 1053/FL340/TP B739/TB CONS LGT OCNL MOD
```
Report
a routine report filed through TLH
Where
50 nm southeast (120°) of SZW
Time
10:53 UTC
Height
at 34,000 ft
Aircraft
B739
Turbulence
continuous light occasional moderate

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 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 21 forecast points nearest it (SEA, YKM, LWS, DLN, LND, BFF, GLD, GRI, SLN, ICT, MKC, SGF, LIT, MEM, BHM, MGM, CSG, TLH, JAX, PIE, MLB). 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	270° at 15 kt	−12 kt		132 kt	17 h 06 min	12:59 am EDT (04:59 UTC)
5,500 ft	270° at 17 kt	−15 kt	23 °C	135 kt	16 h 43 min	12:36 am EDT (04:36 UTC)
7,500 ft	270° at 13 kt	−12 kt	9 °C	132 kt	17 h 06 min	12:59 am EDT (04:59 UTC)
9,500 ft	270° at 13 kt	−10 kt	6 °C	130 kt	17 h 22 min	1:15 am EDT (05:15 UTC)
11,500 ft	260° at 13 kt	−10 kt	3 °C	130 kt	17 h 22 min	1:15 am EDT (05:15 UTC)
13,500 ft	250° at 14 kt	−9 kt	-1 °C	129 kt	17 h 30 min	1:23 am EDT (05:23 UTC)
15,500 ft	250° at 14 kt	−9 kt	-5 °C	129 kt	17 h 30 min	1:23 am EDT (05:23 UTC)
17,500 ft	250° at 15 kt	−10 kt	-10 °C	130 kt	17 h 22 min	1:15 am EDT (05:15 UTC)
18,000 ft FL180	250° at 15 kt	−10 kt	-11 °C	130 kt	17 h 22 min	1:15 am EDT (05:15 UTC)
24,000 ft FL240	250° at 22 kt	−14 kt	-22 °C	134 kt	16 h 51 min	12:44 am EDT (04:44 UTC)
30,000 ft FL300	270° at 33 kt	−27 kt	-32 °C	147 kt	15 h 21 min	11:14 pm EDT (03:14 UTC)
34,000 ft FL340	270° at 34 kt	−30 kt	-38 °C	150 kt	15 h 03 min	10:56 pm EDT (02:56 UTC)
39,000 ft FL390	260° at 32 kt	−27 kt	-47 °C	147 kt	15 h 21 min	11:14 pm EDT (03:14 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

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; 24 nm from the line	350/5	010/6 0°	010/9 -4°	010/27 -6°	010/51 -15°	360/58 -26°	360/60 -41°	350/55 -48°	340/30 -45°
YKM	used from 50 nm out; 36 nm from the line	360/6	360/11 -1°	030/20 -7°	040/21 -11°	020/55 -18°	010/84 -26°	010/79 -40°	010/45 -42°	350/23 -42°
LWS	used from 150 nm out; 53 nm from the line	L/V	340/5 -3°	L/V -6°	040/7 -10°	100/23 -22°	180/30 -31°	190/11 -34°	200/11 -36°	220/23 -40°
DLN	used from 349 nm out; 52 nm from the line			190/10 -4°	220/23 -4°	210/21 -18°	210/43 -28°	210/60 -33°	210/72 -37°	210/67 -44°
LND	used from 549 nm out; 86 nm from the line			240/10 3°	240/30 0°	220/42 -13°	230/52 -23°	220/54 -33°	220/52 -36°	220/53 -44°
BFF	used from 749 nm out; 91 nm from the line		280/28	260/39 11°	240/34 5°	210/38 -11°	210/52 -22°	230/61 -31°	230/61 -36°	240/56 -45°
GLD	used from 949 nm out; 100 nm from the line		260/37	260/25 14°	250/27 8°	230/36 -8°	230/49 -21°	250/71 -30°	260/82 -36°	250/73 -48°
GRI	used from 1048 nm out; 76 nm from the line		230/39 23°	230/32 15°	210/29 7°	230/31 -8°	230/43 -21°	250/52 -31°	260/59 -35°	260/59 -46°
SLN	used from 1098 nm out; 73 nm from the line	230/49	240/41 22°	230/26 15°	220/21 7°	240/38 -8°	240/44 -21°	260/77 -29°	270/70 -36°	270/63 -48°
ICT	used from 1248 nm out; 80 nm from the line	230/45	240/33 21°	230/23 14°	230/22 7°	240/29 -7°	240/36 -20°	260/78 -29°	270/69 -36°	270/56 -49°
MKC	used from 1298 nm out; 79 nm from the line	240/49	240/21 20°	220/19 13°	230/21 6°	260/26 -7°	250/37 -19°	270/66 -31°	270/65 -38°	280/60 -48°
SGF	used from 1348 nm out; 42 nm from the line	230/37	260/20 15°	250/16 13°	250/15 8°	260/28 -7°	250/31 -17°	280/59 -31°	280/59 -39°	290/55 -50°
LIT	used from 1498 nm out; 76 nm from the line	250/22	250/25 18°	240/23 12°	240/20 7°	250/17 -6°	260/25 -17°	300/45 -29°	300/49 -40°	310/43 -51°
MEM	used from 1548 nm out; 52 nm from the line	250/19	260/19 17°	270/20 12°	270/16 6°	270/21 -6°	290/27 -17°	300/37 -30°	300/49 -40°	310/40 -51°
BHM	used from 1697 nm out; 91 nm from the line	310/19	310/15 16°	320/19 11°	330/15 5°	330/23 -5°	320/14 -18°	320/36 -32°	330/44 -40°	340/36 -51°
MGM	used from 1847 nm out; 9 nm from the line	320/19	330/16 17°	340/21 11°	330/11 5°	330/27 -6°	330/21 -17°	330/37 -32°	340/44 -40°	360/30 -52°
CSG	used from 1897 nm out; 51 nm from the line	330/27	340/28 16°	350/28 11°	330/17 6°	340/25 -6°	350/33 -18°	330/46 -32°	340/45 -41°	350/31 -52°
TLH	used from 1947 nm out; 55 nm from the line	340/23	350/26 17°	350/21 11°	300/13 6°	320/25 -6°	340/35 -16°	350/44 -32°	360/51 -42°	350/33 -52°
JAX	used from 2097 nm out; 69 nm from the line	310/22	310/19 16°	300/22 14°	290/25 8°	300/25 -7°	300/24 -18°	270/20 -33°	260/25 -41°	290/17 -51°
PIE	used from 2147 nm out; 82 nm from the line	360/10	340/12 18°	330/9 13°	290/12 8°	260/21 -7°	280/18 -18°	250/20 -33°	250/26 -41°	250/20 -51°
MLB	used from 2197 nm out; 35 nm from the line	290/10	260/15 18°	290/12 13°	280/13 8°	250/20 -7°	260/18 -18°	240/17 -32°	250/20 -41°	250/22 -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
BFI Seattle, WA	departure	VFR	calm	10+ mi	none	21 ft	3:53 am PDT (10:53 UTC)
MWH Moses Lake, WA	120 nm out, 17 nm northeast of the line, tower	VFR	from the north-northwest (340°) at 6 knots	10+ mi	none	1,188 ft	10:52 UTC
LWS Lewiston, ID	230 nm out, 2 nm northwest of the line, tower	VFR Sky: a broken layer at 7,000 feet	calm	10+ mi	7,000 ft	1,442 ft	10:56 UTC
HSG Thermopolis, WY	629 nm out, 4 nm southwest of the line	marginal VFR Sky: scattered clouds at 1,300 feet, overcast at 2,500 feet	from the north (010°) at 8 knots	10+ mi	2,500 ft	4,891 ft	10:55 UTC
GUR Guernsey, WY	809 nm out, 8 nm southwest of the line, tower	VFR Sky: a broken layer at 14,000 feet, overcast at 17,000 feet	from the southeast (140°) at 3 knots	9 mi	14,000 ft	4,401 ft	10:55 UTC
OGA Ogallala, NE	959 nm out, 2 nm southwest of the line	VFR	from the west-northwest (290°) at 4 knots	10+ mi	none	3,279 ft	10:55 UTC
SLN Salina, KS	1188 nm out, 22 nm south of the line, tower	VFR	from the south (190°) at 15 knots, gusting to 22	10+ mi	none	1,288 ft	10:53 UTC
BBG Branson, MO	1448 nm out, 13 nm southwest of the line, tower	VFR	calm	10+ mi	none	1,302 ft	10:55 UTC
TCL Tuscaloosa, AL	1787 nm out, 5 nm west of the line, tower	VFR Weather: mist	calm	6 mi	none	169 ft	10:53 UTC
MGM Montgomery, AL	1867 nm out, 7 nm southwest of the line, tower	low IFR Sky: sky obscured at 100 feet Weather: fog	calm	0.25 mi	100 ft	221 ft	10:57 UTC
ORL Orlando, FL	2217 nm out, 7 nm west of the line, tower	VFR	from the north-northwest (330°) at 3 knots	10+ mi	none	112 ft	10:53 UTC
MLB Melbourne, FL	destination	VFR Sky: a few clouds at 300 feet	from the west-northwest (300°) at 4 knots	10+ mi	none	33 ft	6:53 am EDT (10:53 UTC)

The highest airport on this list sits at 4,891 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At MLB when you get there the forecast at the estimated arrival, 10:56 pm EDT (02:56 UTC)

Wind from the north at 6 knots, visibility more than 6 miles, clear skies VFR

The whole forecast for MLB

From Mon 2:00 am EDT (06:00 UTC): wind from the west-northwest at 4 knots, visibility more than 6 miles, a few clouds at 1,000 feet, a few clouds at 18,000 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the north-northwest at 10 knots, gusting to 15, visibility more than 6 miles, scattered clouds at 18,000 feet
From Mon 6:00 pm EDT (22:00 UTC): wind from the north-northeast at 10 knots, gusting to 15, visibility more than 6 miles, clear skies
From Mon 8:00 pm EDT (00:00 UTC): wind from the north at 6 knots, visibility more than 6 miles, clear skies

The forecast for BFI, the departure

From Mon 2:00 am PDT (09:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
From Mon 12:00 pm PDT (19:00 UTC): wind from the west-southwest at 3 knots, visibility more than 6 miles, clear skies
From Mon 2:00 pm PDT (21:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, clear skies
From Mon 7:00 pm PDT (02:00 UTC): wind calm, visibility more than 6 miles, clear skies

Temporary flight restrictions on the line or within 25 nm of it

4/3634 DISNEY WORLD THEME PARK, ORLANDO, FL 16 nm from the route, at the destination end · security · ZJX
6/8901 Cape Canaveral, FL, Thursday, October 15, 2026 Local 13 nm from the route, at the destination end · a rocket launch or re-entry · starts Thursday 15 October · ZJX
6/8900 Cape Canaveral, FL, Wednesday, October 14, 2026 Local 13 nm from the route, at the destination end · a rocket launch or re-entry · starts Wednesday 14 October · ZMA
6/8896 Cape Canaveral, FL, Tuesday, October 13, 2026 Local 13 nm from the route, at the destination end · a rocket launch or re-entry · starts tomorrow · ZJX
6/8897 Cape Canaveral, FL, Wednesday, October 14, 2026 Local 13 nm from the route, at the destination end · a rocket launch or re-entry · starts Wednesday 14 October · ZJX
6/8898 Cape Canaveral, FL, Thursday, October 15, 2026 Local 13 nm from the route, at the destination end · a rocket launch or re-entry · starts Thursday 15 October · ZMA
6/8899 Cape Canaveral, FL, Tuesday, October 13, 2026 Local 13 nm from the route, at the destination end · a rocket launch or re-entry · starts tomorrow · ZMA

Daylight

Sunset at BFI 6:25 pm PDT (01:25 UTC), at MLB 6:56 pm EDT (22:56 UTC) (civil twilight ends 7:20 pm EDT (23:20 UTC)). At 120 knots the arrival at MLB is after sunset there (6:56 pm EDT (22:56 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 Pacific Northwest · loop National Weather Service

Radar now, the northern Rockies · loop National Weather Service

Radar now, the southern Plains · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

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: Boeing Fld/King County International, Melbourne Orlando International.