Plan a flight · Sun 7:23 pm PDT (02:23 UTC)

Boeing Fld/King County International to Pittsburgh International BFI → PIT

1,841 nautical miles (2,119 statute miles) east on a straight line, true course 088°, about 073° magnetic at the departure end (variation 15E). At 120 knots that is 10 h 50 min at the quickest height in today's winds (39,000 ft, a 50-knot tailwind), arriving about 9:13 am EDT (13:13 UTC). Right now BFI is VFR, wind calm; PIT is IFR, wind from the north-northeast (020°) 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 first 159 nm of the route.
AIRMET ZULU 2C: moderate icing up to 16,000 ft. Over the route from 109 to 478 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 229 to 547 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 269 to 876 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 269 to 846 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 995 to 1085 nm out.
AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 1652 to 1811 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 0 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 BFI.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

A320 at 33,000 ft, 3 nm east, 5:36 pm PDT (00:36 UTC): moderate turbulence above 33,000 ft, remarks: zob. 1592 nm along the route, 3 nm east of the line.
as filed, and in English
```
JXN UA /OV JXN280030/TM 0036/FL330/TP A320/TB OCNL MOD 330/RM ZOB
```
Report
a routine report filed through JXN
Where
30 nm west (280°) of JXN
Time
00:36 UTC
Height
at 33,000 ft
Aircraft
A320
Turbulence
occasional moderate at 33,000 ft
Remarks
zob
B38M at 29,000 ft, 40 nm south, 5:55 pm PDT (00:55 UTC): moderate turbulence above 29,000 ft, remarks: zob. At the destination end, 40 nm south of the line.
as filed, and in English
```
MPG UA /OV AIR120030/TM 0055/FL290/TP B38M /TB OCNL MOD 290/RM ZOB
```
Report
a routine report filed through MPG
Where
30 nm southeast (120°) of AIR
Time
00:55 UTC
Height
at 29,000 ft
Aircraft
B38M
Turbulence
occasional moderate at 29,000 ft
Remarks
zob
A321 at 13,500 ft, 41 nm south, 6:54 pm PDT (01:54 UTC): remarks: zse. At the departure end, 41 nm south of the line.
as filed, and in English
```
SEA UA /OV SEA120045/TM 0154/FL135/TP A321/SK TOP130/RM ZSE
```
Report
a routine report filed through SEA
Where
45 nm southeast (120°) of SEA
Time
01:54 UTC
Height
at 13,500 ft
Aircraft
A321
Sky
TOP130
Remarks
zse
PC12 at 15,000 ft, 41 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. At the departure end, 41 nm south of the line.
as filed, and in English
```
YKM UA /OV YKM270050/TM 0042/FL150/TP PC12/SK TOP130/RM -ZSE
```
Report
a routine report filed through YKM
Where
50 nm west (270°) of YKM
Time
00:42 UTC
Height
at 15,000 ft
Aircraft
PC12
Sky
TOP130
Remarks
zse
PC12 at 13,000 ft, 41 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. At the departure end, 41 nm south of the line.
as filed, and in English
```
YKM UA /OV YKM270050/TM 0042/FL130/TP PC12/SK TOP130/RM -ZSE
```
Report
a routine report filed through YKM
Where
50 nm west (270°) of YKM
Time
00:42 UTC
Height
at 13,000 ft
Aircraft
PC12
Sky
TOP130
Remarks
zse
SB20 at 16,000 ft, 18 nm north, 6:52 pm PDT (01:52 UTC): remarks: zse. At the departure end, 18 nm north of the line.
as filed, and in English
```
PAE UA /OV PAE075045/TM 0152/FL160/TP SB20/SK TOP120/RM ZSE
```
Report
a routine report filed through PAE
Where
45 nm east (075°) of PAE
Time
01:52 UTC
Height
at 16,000 ft
Aircraft
SB20
Sky
TOP120
Remarks
zse
E75L descending, 50 nm north, 6:06 pm PDT (01:06 UTC): overcast above 4,000 ft. 318 nm along the route, 50 nm north of the line.
as filed, and in English
```
GPI UA /OV KGPI/TM 0106/FLDURD/TP E75L/SK OVC040
```
Report
a routine report filed through GPI
Where
over KGPI
Time
01:06 UTC
Height
during the descent
Aircraft
E75L
Sky
overcast from 4,000 ft
BCS1 at 3,700 ft, 34 nm south, 6:47 pm PDT (01:47 UTC): snow, rain, remarks: during the descent ils runway 12. 338 nm along the route, 34 nm south of the line.
as filed, and in English
```
MSO UA /OV MSO/TM 0147/FL037/TP BCS1/SK 037/WX SN RA/RM DURD ILS RY 12
```
Report
a routine report filed through MSO
Where
over MSO
Time
01:47 UTC
Height
at 3,700 ft
Aircraft
BCS1
Sky
at 3,700 ft
Weather
snow, rain
Remarks
during the descent ils runway 12
C25B at 4,100 ft, 34 nm south, 5:36 pm PDT (00:36 UTC): no icing, overcast above 4,100 ft, remarks: during the descent ils runway 12. 338 nm along the route, 34 nm south of the line.
as filed, and in English
```
MSO UA /OV MSO/TM 0036/FL041/TP C25B/SK OVC041/IC NEG/RM DURD ILS RY 12
```
Report
a routine report filed through MSO
Where
over MSO
Time
00:36 UTC
Height
at 4,100 ft
Aircraft
C25B
Sky
overcast from 4,100 ft
Icing
none
Remarks
during the descent ils runway 12
CRJ2 at 2,900 ft, 26 nm north, 5:05 pm PDT (00:05 UTC): a routine report with nothing remarked on. 796 nm along the route, 26 nm north of the line.
as filed, and in English
```
DIK UA /OV DIK/TM 0005/FL029/TP CRJ2/SK BASE029
```
Report
a routine report filed through DIK
Where
over DIK
Time
00:05 UTC
Height
at 2,900 ft
Aircraft
CRJ2
Sky
BASE029
B789 at 35,000 ft, 48 nm north, 6:57 pm PDT (01:57 UTC): light turbulence. 816 nm along the route, 48 nm north of the line.
as filed, and in English
```
DIK UA /OV DIK040030/TM 0157/FL350/TP B789/TB CONS LGT/ OCNL MOD CHOP/ NEG 370
```
Report
a routine report filed through DIK
Where
30 nm northeast (040°) of DIK
Time
01:57 UTC
Height
at 35,000 ft
Aircraft
B789
Turbulence
continuous light occasional moderate chop no at 37,000 ft
B39M at 35,000 ft, 27 nm south, 4:28 pm PDT (23:28 UTC): light chop turbulence. 985 nm along the route, 27 nm south of the line.
as filed, and in English
```
ABR UA /OV ABR230015/TM 2328/FL350/TP B39M/TB LGT CHOP
```
Report
a routine report filed through ABR
Where
15 nm southwest (230°) of ABR
Time
23:28 UTC
Height
at 35,000 ft
Aircraft
B39M
Turbulence
light chop
B39M at 34,000 ft, 12 nm southwest, 4:25 pm PDT (23:25 UTC): light chop turbulence. 1184 nm along the route, 12 nm southwest of the line.
as filed, and in English
```
MSP UA /OV MSP240040/TM 2325/FL340/TP B39M/TB LGT CHOP
```
Report
a routine report filed through MSP
Where
40 nm southwest (240°) of MSP
Time
23:25 UTC
Height
at 34,000 ft
Aircraft
B39M
Turbulence
light chop
E295 at 37,000 ft, 10 nm southwest, 5:53 pm PDT (00:53 UTC): light chop turbulence. 1453 nm along the route, 10 nm southwest of the line.
as filed, and in English
```
UES UA /OV BAE/TM 0053/FL370/TP E295/TB OCNL LGT CHOP
```
Report
a routine report filed through UES
Where
over BAE
Time
00:53 UTC
Height
at 37,000 ft
Aircraft
E295
Turbulence
occasional light chop

14 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 17 forecast points nearest it (SEA, YKM, GEG, GPI, GTF, BIL, MLS, DIK, ABR, AXN, MSP, LSE, GRB, MKG, FWA, CLE, AGC). 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	250° at 5 kt	−3 kt		123 kt	14 h 58 min	1:21 pm EDT (17:21 UTC)
5,500 ft	060° at 2 kt	+2 kt	2 °C	118 kt	15 h 36 min	1:59 pm EDT (17:59 UTC)
7,500 ft	light and variable	0	8 °C	120 kt	15 h 20 min	1:43 pm EDT (17:43 UTC)
9,500 ft	240° at 4 kt	−3 kt	3 °C	123 kt	14 h 58 min	1:21 pm EDT (17:21 UTC)
11,500 ft	240° at 8 kt	−7 kt	1 °C	127 kt	14 h 30 min	12:53 pm EDT (16:53 UTC)
13,500 ft	240° at 12 kt	−10 kt	-3 °C	130 kt	14 h 10 min	12:33 pm EDT (16:33 UTC)
15,500 ft	250° at 15 kt	−12 kt	-7 °C	132 kt	13 h 57 min	12:20 pm EDT (16:20 UTC)
17,500 ft	250° at 18 kt	−15 kt	-12 °C	135 kt	13 h 38 min	12:01 pm EDT (16:01 UTC)
18,000 ft FL180	250° at 18 kt	−16 kt	-13 °C	136 kt	13 h 32 min	11:55 am EDT (15:55 UTC)
24,000 ft FL240	250° at 24 kt	−22 kt	-23 °C	142 kt	12 h 58 min	11:21 am EDT (15:21 UTC)
30,000 ft FL300	250° at 32 kt	−29 kt	-36 °C	149 kt	12 h 21 min	10:44 am EDT (14:44 UTC)
34,000 ft FL340	260° at 40 kt	−37 kt	-43 °C	157 kt	11 h 44 min	10:07 am EDT (14:07 UTC)
39,000 ft FL390	270° at 51 kt	−50 kt	-49 °C	170 kt	10 h 50 min	9:13 am EDT (13:13 UTC)

Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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; 26 nm from the line	360/9	350/10 1°	010/10 -5°	030/20 -11°	020/60 -17°	010/86 -26°	360/90 -40°	010/68 -42°	360/31 -43°
YKM	used from 50 nm out; 60 nm from the line	030/16	020/18 0°	030/30 -8°	030/23 -13°	020/40 -23°	010/73 -29°	010/54 -36°	360/29 -37°	330/16 -40°
GEG	used from 100 nm out; 69 nm from the line		050/18 -2°	060/19 -8°	L/V -11°	160/11 -24°	190/17 -31°	200/19 -35°	220/14 -37°	250/11 -41°
GPI	used from 249 nm out; 70 nm from the line		060/19 -3°	110/11 -8°	130/6 -8°	200/40 -19°	190/58 -28°	200/101 -39°	220/73 -43°	230/41 -43°
GTF	used from 348 nm out; 70 nm from the line		070/21	080/18 -6°	120/5 -5°	180/30 -14°	200/53 -24°	210/80 -38°	220/83 -44°	230/68 -46°
BIL	used from 547 nm out; 77 nm from the line		080/24	130/14 -1°	180/33 0°	210/43 -10°	220/58 -21°	200/55 -36°	220/75 -44°	240/83 -48°
MLS	used from 597 nm out; 57 nm from the line		120/22 5°	170/18 4°	200/33 1°	230/49 -10°	230/58 -21°	220/54 -37°	230/64 -44°	250/74 -49°
DIK	used from 746 nm out; 32 nm from the line		110/15 6°	200/17 5°	230/31 1°	240/47 -10°	240/52 -20°	230/52 -36°	240/57 -45°	250/67 -51°
ABR	used from 896 nm out; 72 nm from the line	030/24	220/5 16°	230/18 12°	230/32 5°	240/38 -10°	250/37 -20°	240/40 -35°	240/56 -44°	250/72 -52°
AXN	used from 1045 nm out; 57 nm from the line	L/V	220/23 17°	230/24 12°	240/25 5°	260/32 -11°	260/40 -21°	270/50 -35°	270/57 -45°	270/81 -55°
MSP	used from 1145 nm out; 45 nm from the line	200/28	240/30 19°	240/24 12°	240/17 5°	270/24 -10°	270/33 -20°	280/48 -35°	290/55 -45°	280/84 -54°
LSE	used from 1244 nm out; 44 nm from the line	220/33	250/29 17°	250/15 9°	260/12 6°	280/21 -9°	280/33 -20°	300/43 -36°	310/56 -45°	300/79 -53°
GRB	used from 1393 nm out; 70 nm from the line	240/24	260/18 16°	270/20 11°	290/14 4°	280/24 -9°	300/34 -21°	310/51 -38°	310/54 -48°	300/71 -51°
MKG	used from 1443 nm out; 68 nm from the line	250/5	320/10 15°	310/19 9°	320/21 3°	310/23 -10°	330/37 -22°	330/51 -38°	320/44 -47°	300/60 -49°
FWA	used from 1592 nm out; 73 nm from the line	350/9	350/24 15°	360/25 9°	360/29 4°	350/31 -10°	340/39 -22°	330/40 -37°	320/38 -43°	320/48 -48°
CLE	used from 1692 nm out; 37 nm from the line	340/5	320/13 14°	300/12 8°	310/10 2°	310/14 -10°	340/14 -23°	320/27 -35°	260/28 -40°	250/36 -48°
AGC	used from 1791 nm out; 41 nm from the line	140/12	350/10 12°	L/V 9°	L/V 3°	200/11 -11°	220/21 -22°	220/47 -33°	230/51 -39°	230/45 -48°

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 Sky: a few clouds at 6,000 feet	calm	10+ mi	none	21 ft	6:53 pm PDT (01:53 UTC)
MWH Moses Lake, WA	119 nm out, 22 nm south of the line, tower	VFR Sky: a broken layer at 9,000 feet, overcast at 11,000 feet	from the east (080°) at 4 knots	10+ mi	9,000 ft	1,188 ft	01:52 UTC
GEG Spokane, WA	189 nm out, 5 nm northeast of the line, tower	VFR Sky: a broken layer at 6,000 feet, a broken layer at 11,000 feet	from the northeast (040°) at 11 knots	10+ mi	6,000 ft	2,385 ft	01:53 UTC
GTF Great Falls, MT	448 nm out, 10 nm northwest of the line, tower	low IFR Sky: overcast at 500 feet Weather: light snow, mist	from the north (010°) at 11 knots	0.75 mi	500 ft	3,680 ft	02:06 UTC
BHK Baker, MT	736 nm out, 17 nm south of the line	marginal VFR Sky: a few clouds at 900 feet, overcast at 1,700 feet Weather: light rain	from the east (080°) at 18 knots, gusting to 28	8 mi	1,700 ft	2,980 ft	01:54 UTC
BWW Bowman, ND	786 nm out, 20 nm southwest of the line	low IFR Sky: overcast at 400 feet Weather: light rain	from the east-northeast (070°) at 14 knots	5 mi	400 ft	2,965 ft	02:15 UTC
VVV Ortonville, MN	1075 nm out, 1 nm west of the line	IFR Sky: overcast at 800 feet	from the north-northwest (330°) at 10 knots, gusting to 17	10+ mi	800 ft	1,101 ft	02:15 UTC
FCM Minneapolis, MN	1204 nm out, 10 nm north of the line, tower	VFR	from the south (170°) at 6 knots	10+ mi	none	906 ft	01:53 UTC
CMY Sparta, WI	1334 nm out, 3 nm west of the line, tower	VFR	from the south (180°) at 6 knots	10+ mi	none	839 ft	01:55 UTC
BTL Battle Creek, MI	1592 nm out, 2 nm west of the line, tower	VFR	calm	9 mi	none	951 ft	01:53 UTC
CAK Akron, OH	1781 nm out, 3 nm southwest of the line, tower	IFR Sky: a broken layer at 900 feet, overcast at 1,700 feet	calm	7 mi	900 ft	1,225 ft	01:51 UTC
PIT Pittsburgh, PA	destination	IFR Sky: a broken layer at 800 feet, overcast at 1,900 feet	from the north-northeast (020°) at 4 knots	10+ mi	800 ft	1,202 ft	10:14 pm EDT (02:14 UTC)

The highest airport on this list sits at 3,680 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At PIT when you get there the forecast at the estimated arrival, 9:13 am EDT (13:13 UTC)

Wind light and variable, visibility 6 miles, mist, a broken layer at 800 feet, overcast at 1,200 feet IFR

The whole forecast for PIT

From Sun 10:00 pm EDT (02:00 UTC): wind from the east-northeast at 4 knots, visibility more than 6 miles, a broken layer at 2,200 feet, a broken layer at 4,000 feet
From Sun 11:00 pm EDT (03:00 UTC): wind from the north-northeast at 5 knots, visibility more than 6 miles, a broken layer at 1,800 feet
From Mon 2:00 am EDT (06:00 UTC): wind light and variable, visibility 6 miles, mist, a broken layer at 800 feet, overcast at 1,200 feet
From Mon 10:00 am EDT (14:00 UTC): wind light and variable, visibility more than 6 miles, overcast at 1,200 feet
From Mon 2:00 pm EDT (18:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, overcast at 2,200 feet
From Mon 4:00 pm EDT (20:00 UTC): wind from the west-southwest at 5 knots, visibility more than 6 miles, scattered clouds at 3,000 feet, a broken layer at 9,000 feet

The forecast for BFI, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the north-northwest at 8 knots, gusting to 18, visibility more than 6 miles, a few clouds at 5,000 feet
From Sun 7:00 pm PDT (02:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
From Mon 3:00 am PDT (10:00 UTC): wind light and variable, visibility more than 6 miles, patches of fog, clear skies
From Mon 9:00 am PDT (16:00 UTC): wind from the south-southeast at 3 knots, 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

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

6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, at the destination end · a VIP movement · today · ZOB
6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 15 nm from the route, at the destination end · a VIP movement · today · ZOB

Daylight

Sunset at BFI 6:27 pm PDT (01:27 UTC), at PIT 6:45 pm EDT (22:45 UTC) (civil twilight ends 7:13 pm EDT (23:13 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 upper Mississippi valley · 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, Pittsburgh International.