Plan a flight · Mon 2:42 am EDT (06:42 UTC)

Baltimore/Washington International Thurgood Marshall to Seattle-Tacoma International BWI → SEA

2,024 nautical miles (2,329 statute miles) northwest on a straight line, true course 299°, about 310° magnetic at the departure end (variation 11W). At 120 knots that is 16 h 52 min at the quickest height in today's winds (4,500 ft, no wind along the track), arriving about 4:34 pm PDT (23:34 UTC). Right now BWI is IFR, wind from the north-northeast (020°) at 6 knots; SEA is VFR, wind from the east-southeast (110°) at 6 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: 1,441 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

SIGMET E22E: thunderstorms (a convective SIGMET) up to 40,000 ft, moving from the southwest at 20 knots, until 3:55 am EDT (07:55 UTC). Over the first 70 nm of the route.

as issued

WSUS31 KKCI 120555
MKCE WST 120555
CONVECTIVE SIGMET 22E
VALID UNTIL 0755Z
NY NJ PA DE MD VA DC WV AND MA RI DE NJ NY CSTL WTRS
FROM 40E HTO-80SSW ACK-100ESE SIE-30SW CSN-40SSE JST-40E HTO
AREA EMBD TS MOV FROM 24020KT. TOPS TO FL400.

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 first 479 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 110 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 50 to 189 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 618 to 768 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 917 to 1755 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1346 to 1366 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1376 to 1894 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1476 to 1775 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 1565 to 1755 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 189 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 BWI.

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

A333 descending, 23 nm north, 1:44 am EDT (05:44 UTC): a routine report with nothing remarked on. 349 nm along the route, 23 nm north of the line.
as filed, and in English
```
DTW UA /OV DTW/TM 0544/FLDURD/TP A333/SK TOPS 025
```
Report
a routine report filed through DTW
Where
over DTW
Time
05:44 UTC
Height
during the descent
Aircraft
A333
Sky
tops 2,500 ft
B739 descending, 23 nm north, 12:54 am EDT (04:54 UTC): a routine report with nothing remarked on. 349 nm along the route, 23 nm north of the line.
as filed, and in English
```
DTW UA /OV DTW/TM 0454/FLDURD/TP B739/SK BASES 011
```
Report
a routine report filed through DTW
Where
over DTW
Time
04:54 UTC
Height
during the descent
Aircraft
B739
Sky
bases 1,100 ft
B738 at 1,700 ft, 20 nm south, 2:20 am EDT (06:20 UTC): overcast from 1,700 ft to 2,000 ft, remarks: during the descent. 359 nm along the route, 20 nm south of the line.
as filed, and in English
```
TOL UA /OV KTOL/TM 0620/FL017/TP B738/SK OVC017-TOP020/RM DURD
```
Report
a routine report filed through TOL
Where
over KTOL
Time
06:20 UTC
Height
at 1,700 ft
Aircraft
B738
Sky
overcast from 1,700 ft, tops 2,000 ft
Remarks
during the descent
B738 at 1,800 ft, 20 nm south, 1:18 am EDT (05:18 UTC): overcast from 1,800 ft to 2,700 ft, remarks: during the climb. 359 nm along the route, 20 nm south of the line.
as filed, and in English
```
TOL UA /OV KTOL/TM 0518/FL018/TP B738/SK OVC018-TOP027/RM DURC
```
Report
a routine report filed through TOL
Where
over KTOL
Time
05:18 UTC
Height
at 1,800 ft
Aircraft
B738
Sky
overcast from 1,800 ft, tops 2,700 ft
Remarks
during the climb
B738 at 1,300 ft, 20 nm south, 12:45 am EDT (04:45 UTC): overcast from 1,300 ft to 3,000 ft, remarks: during the descent. 359 nm along the route, 20 nm south of the line.
as filed, and in English
```
TOL UA /OV KTOL/TM 0445/FL013/TP B738/SK OVC013-TOP030/RM DURD
```
Report
a routine report filed through TOL
Where
over KTOL
Time
04:45 UTC
Height
at 1,300 ft
Aircraft
B738
Sky
overcast from 1,300 ft, tops 3,000 ft
Remarks
during the descent

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 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 18 forecast points nearest it (PSB, AGC, CLE, FWA, MKG, GRB, LSE, MSP, AXN, ABR, DIK, MLS, BIL, GTF, GPI, GEG, YKM, SEA). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
4,500 ft	200° at 1 kt	0	3 °C	120 kt	16 h 52 min	4:34 pm PDT (23:34 UTC)
6,500 ft	260° at 2 kt	+2 kt	9 °C	118 kt	17 h 09 min	4:51 pm PDT (23:51 UTC)
8,500 ft	260° at 4 kt	+4 kt	6 °C	116 kt	17 h 27 min	5:09 pm PDT (00:09 UTC)
10,500 ft	250° at 8 kt	+6 kt	2 °C	114 kt	17 h 45 min	5:27 pm PDT (00:27 UTC)
12,500 ft	250° at 11 kt	+9 kt	-1 °C	111 kt	18 h 14 min	5:56 pm PDT (00:56 UTC)
14,500 ft	250° at 13 kt	+12 kt	-5 °C	108 kt	18 h 44 min	6:26 pm PDT (01:26 UTC)
16,500 ft	260° at 16 kt	+15 kt	-9 °C	105 kt	19 h 17 min	6:59 pm PDT (01:59 UTC)
18,000 ft FL180	260° at 18 kt	+18 kt	-12 °C	102 kt	19 h 51 min	7:33 pm PDT (02:33 UTC)
24,000 ft FL240	260° at 20 kt	+20 kt	-23 °C	100 kt	20 h 14 min	7:56 pm PDT (02:56 UTC)
30,000 ft FL300	270° at 23 kt	+24 kt	-37 °C	96 kt	21 h 05 min	8:47 pm PDT (03:47 UTC)
34,000 ft FL340	270° at 34 kt	+34 kt	-42 °C	86 kt	23 h 32 min	11:14 pm PDT (06:14 UTC)
39,000 ft FL390	270° at 43 kt	+44 kt	-48 °C	76 kt	26 h 38 min	2:20 am PDT (09:20 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
PSB	used from 0 nm out; 100 nm from the line		360/13 13°	330/14 7°	300/11 3°	290/12 -11°	240/23 -23°	270/25 -36°	250/34 -40°	250/45 -48°
AGC	used from 100 nm out; 42 nm from the line	350/14	330/20 11°	340/18 8°	330/17 3°	340/22 -11°	340/31 -22°	330/33 -36°	300/34 -41°	300/35 -47°
CLE	used from 199 nm out; 49 nm from the line	340/7	010/16 13°	350/18 8°	350/20 3°	340/31 -10°	340/46 -21°	340/54 -37°	330/62 -44°	340/65 -49°
FWA	used from 349 nm out; 83 nm from the line	300/17	320/20 16°	330/20 10°	340/15 3°	310/27 -8°	320/37 -20°	330/52 -36°	330/65 -43°	330/60 -50°
MKG	used from 399 nm out; 73 nm from the line	260/22	290/16 15°	300/11 10°	290/5 3°	300/26 -9°	300/32 -20°	320/48 -36°	320/61 -45°	310/74 -53°
GRB	used from 548 nm out; 70 nm from the line	250/36	270/23 16°	270/14 9°	240/18 4°	280/26 -9°	280/29 -20°	290/42 -36°	290/51 -45°	290/72 -55°
LSE	used from 648 nm out; 43 nm from the line	230/40	240/24 17°	240/13 10°	250/13 6°	280/22 -9°	250/28 -21°	250/41 -34°	260/42 -44°	270/62 -53°
MSP	used from 748 nm out; 41 nm from the line	230/26	240/30 17°	240/24 12°	250/22 5°	250/35 -10°	260/36 -21°	250/41 -36°	250/49 -45°	260/58 -52°
AXN	used from 847 nm out; 61 nm from the line	100/14	250/21 14°	240/24 12°	240/31 5°	260/36 -10°	260/40 -21°	250/42 -36°	260/48 -45°	260/53 -50°
ABR	used from 947 nm out; 63 nm from the line	070/14	250/10 17°	270/16 11°	260/28 5°	260/36 -10°	260/41 -22°	270/33 -37°	260/42 -42°	260/50 -48°
DIK	used from 1147 nm out; 61 nm from the line		150/24 7°	200/38 6°	220/53 0°	230/51 -9°	230/49 -21°	240/37 -37°	240/47 -44°	250/65 -48°
MLS	used from 1296 nm out; 37 nm from the line		150/23 2°	190/29 4°	210/44 2°	220/32 -10°	210/36 -21°	200/48 -37°	230/63 -40°	240/71 -47°
BIL	used from 1446 nm out; 78 nm from the line		080/13	180/9 -2°	210/38 0°	220/51 -11°	210/46 -22°	210/58 -35°	230/73 -39°	230/72 -45°
GTF	used from 1495 nm out; 61 nm from the line		070/11	080/15 -7°	110/19 -9°	190/25 -14°	200/34 -23°	200/54 -39°	220/66 -40°	220/77 -44°
GPI	used from 1645 nm out; 60 nm from the line		070/19 -5°	100/16 -7°	080/10 -8°	130/8 -19°	170/37 -28°	200/50 -40°	210/43 -40°	220/41 -42°
GEG	used from 1745 nm out; 61 nm from the line		080/16 -2°	050/17 -7°	080/9 -10°	190/33 -21°	180/31 -32°	L/V -35°	L/V -37°	270/8 -40°
YKM	used from 1894 nm out; 65 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°
SEA	used from 1944 nm out; 55 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°

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
BWI Baltimore, MD	departure	IFR Sky: overcast at 800 feet Weather: light rain	from the north-northeast (020°) at 6 knots	7 mi	800 ft	143 ft	1:54 am EDT (05:54 UTC)
HGR Hagerstown, MD	60 nm out, 4 nm northeast of the line, tower	marginal VFR Sky: scattered clouds at 600 feet, a broken layer at 1,200 feet	from the north-northwest (340°) at 9 knots	10+ mi	1,200 ft	703 ft	06:25 UTC
JXN Jackson, MI	399 nm out, 5 nm north of the line, tower	marginal VFR Weather: mist	from the south (180°) at 3 knots	3 mi	none	1,000 ft	06:32 UTC
BTL Battle Creek, MI	429 nm out, 8 nm southwest of the line, tower	VFR	from the south (190°) at 6 knots	10+ mi	none	951 ft	05:53 UTC
CMY Sparta, WI	698 nm out, 7 nm southeast of the line, tower	VFR	calm	9 mi	none	839 ft	05:55 UTC
FCM Minneapolis, MN	818 nm out, 7 nm north of the line, tower	VFR	from the south-southwest (200°) at 8 knots	10+ mi	none	906 ft	05:53 UTC
ASY Ashley, ND	1077 nm out, 7 nm north of the line	no report just now				2,034 ft
BHK Baker, MT	1286 nm out, 18 nm south of the line	low IFR Sky: overcast at 400 feet Weather: mist	from the east (080°) at 9 knots	3 mi	400 ft	2,980 ft	06:37 UTC
GTF Great Falls, MT	1585 nm out, 12 nm northeast of the line, tower	marginal VFR Sky: a few clouds at 600 feet, overcast at 1,000 feet Weather: light snow, mist	from the north (350°) at 10 knots	3 mi	1,000 ft	3,680 ft	06:01 UTC
THM Thompson Falls, MT	1735 nm out, 7 nm northwest of the line	no report just now				2,467 ft
GEG Spokane, WA	1834 nm out, 8 nm northeast of the line, tower	VFR Sky: a few clouds at 8,000 feet, scattered clouds at 12,000 feet	from the northeast (040°) at 10 knots	10+ mi	none	2,385 ft	05:53 UTC
SEA Seattle, WA	destination	VFR	from the east-southeast (110°) at 6 knots	10+ mi	none	432 ft	10:53 pm PDT (05:53 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 SEA when you get there the forecast at the estimated arrival, 4:34 pm PDT (23:34 UTC)

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

The whole forecast for SEA

From Sun 11:00 pm PDT (06:00 UTC): wind from the east-northeast at 6 knots, visibility more than 6 miles, clear skies
From Mon 3:00 am PDT (10:00 UTC): wind from the southeast at 4 knots, 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 4 knots, visibility more than 6 miles, clear skies
From Mon 11:00 am PDT (18:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, clear skies
From Mon 8:00 pm PDT (03:00 UTC): wind from the south at 4 knots, visibility more than 6 miles, scattered clouds at 25,000 feet

The forecast for BWI, the departure

From Mon 2:00 am EDT (06:00 UTC): wind from the north at 9 knots, gusting to 16, visibility 5 miles, light rain, mist, a broken layer at 800 feet, overcast at 1,300 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the north-northwest at 12 knots, gusting to 20, visibility more than 6 miles, overcast at 1,400 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the northwest at 10 knots, gusting to 18, visibility more than 6 miles, scattered clouds at 1,500 feet, overcast at 2,500 feet
From Mon 4:00 pm EDT (20:00 UTC): wind from the west-northwest at 9 knots, visibility more than 6 miles, scattered clouds at 2,500 feet, a broken layer at 3,500 feet
From Mon 8:00 pm EDT (00:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, scattered clouds at 4,000 feet

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

4/9383 WASHINGTON, DC., USA 12 nm from the route, at the departure end · security · ZDC
6/8800 Baltimore, MD, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 6 nm from the route, at the departure end · drones kept away from a public gathering · starts Saturday 17 October · ZDC
6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 16 nm from the route, at the departure end · a VIP movement · today · ZDC
6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, 199 nm along the route · a VIP movement · today · ZOB
6/8888 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 22 nm from the route, 219 nm along the route · security · today · ZOB
6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 7 nm from the route, 219 nm along the route · a VIP movement · today · ZOB

Daylight

Sunset at BWI 6:32 pm EDT (22:32 UTC), at SEA 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 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 Northeast · loop National Weather Service

Radar now, the central Great Lakes · 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: Baltimore/Washington International Thurgood Marshall, Seattle-Tacoma International.