Plan a flight · Mon 7:04 am PDT (14:04 UTC)

Seattle-Tacoma International to Indianapolis International SEA → IND

1,618 nautical miles (1,861 statute miles) east on a straight line, true course 093°, about 077° magnetic at the departure end (variation 16E). At 120 knots that is 10 h 11 min at the quickest height in today's winds (39,000 ft, a 39-knot tailwind), arriving about 8:15 pm EDT (00:15 UTC), after sunset at the destination. Right now SEA is VFR, wind from the southeast (130°) at 7 knots; IND is VFR, wind from the south-southwest (200°) 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: 1,420 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 50 to 339 nm out.
AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the route from 180 to 579 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 210 to 589 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 369 to 1098 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 589 to 639 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 SEA.

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

A320 at 25,000 ft, 28 nm north, 6:25 am PDT (13:25 UTC): light to moderate chop turbulence above 25,000 ft, remarks: zse. 270 nm along the route, 28 nm north of the line.
as filed, and in English
```
MLP UA /OV MLP/TM 1325/FL250/TP A320/TB CONS LGT OCNL MOD CHOP 250 /RM ZSE
```
Report
a routine report filed through MLP
Where
over MLP
Time
13:25 UTC
Height
at 25,000 ft
Aircraft
A320
Turbulence
continuous light occasional moderate chop at 25,000 ft
Remarks
zse
B752 at 41,000 ft, 12 nm north, 5:31 am PDT (12:31 UTC): light to moderate turbulence above 41,000 ft. 429 nm along the route, 12 nm north of the line.
as filed, and in English
```
HLN UA /OV HLN009010/TM 1231/FL410/TP B752/TB CONS LGT OCNL MOD 410/ZLC
```
Report
a routine report filed through HLN
Where
10 nm north (009°) of HLN
Time
12:31 UTC
Height
at 41,000 ft
Aircraft
B752
Turbulence
continuous light occasional moderate 410/ZLC
BE9L at 7,500 ft, 5 nm west, 5:45 am PDT (12:45 UTC): no turbulence, light rime icing, overcast from 7,500 ft to 9,000 ft, -6 °C, remarks: during the climb. 439 nm along the route, 5 nm west of the line.
as filed, and in English
```
HLN UA /OV HLN120010/TM 1245/FL075/TP BE9L/SK OVC075-TOPS090/TA M06/TB NEG/IC LGT RIME/RM DURC
```
Report
a routine report filed through HLN
Where
10 nm southeast (120°) of HLN
Time
12:45 UTC
Height
at 7,500 ft
Aircraft
BE9L
Sky
overcast from 7,500 ft, tops 9,000 ft
Temperature
−6 °C
Turbulence
none
Icing
light rime
Remarks
during the climb
GLF4 descending, 40 nm south, 6:48 am PDT (13:48 UTC): a routine report with nothing remarked on. 469 nm along the route, 40 nm south of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 1348/FLDURD/TP GLF4/SK 047
```
Report
a routine report filed through BZN
Where
over BZN
Time
13:48 UTC
Height
during the descent
Aircraft
GLF4
Sky
at 4,700 ft
C340 descending, 40 nm south, 5:47 am PDT (12:47 UTC): light icing, remarks: smooth. 469 nm along the route, 40 nm south of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 1247/FLDURD/TP C340/SK 055/IC LGT RM/RM SMOOTH
```
Report
a routine report filed through BZN
Where
over BZN
Time
12:47 UTC
Height
during the descent
Aircraft
C340
Sky
at 5,500 ft
Icing
light remarks
Remarks
smooth
C25A at 5,000 ft, 16 nm south, 6:00 am PDT (13:00 UTC): light rime icing, 4 °C, remarks: lt rime in the descent. 569 nm along the route, 16 nm south of the line.
as filed, and in English
```
BIL UA /OV 100006/TM 1300/FL050/TP C25A/TA 4/IC LT RIME/RM LT RIME IN THE DESCENT
```
Report
a routine report filed through BIL
Where
wind from 100° at 6 knots
Time
13:00 UTC
Height
at 5,000 ft
Aircraft
C25A
Temperature
4 °C
Icing
lt rime
Remarks
lt rime in the descent
SF50 at 4,000 ft, 4 nm northeast, 6:47 am PDT (13:47 UTC): no turbulence, no icing. 939 nm along the route, 4 nm northeast of the line.
as filed, and in English
```
PIR UA /OV PIR/TM 1347/FL040/TP SF50/SK BASE008-TOP040/TB NEG/IC NEG
```
Report
a routine report filed through PIR
Where
over PIR
Time
13:47 UTC
Height
at 4,000 ft
Aircraft
SF50
Sky
BASE008-TOP040
Turbulence
none
Icing
none
UAL1095 at 36,000 ft, 13 nm northeast, 6:00 am PDT (13:00 UTC): no turbulence, -41 °C, wind 253° at 52 knots. 1088 nm along the route, 13 nm northeast of the line.
as filed, and in English
```
ARP UAL1095 4338N 09646W 1300 F360 MS41 253/052KT TB NONE SK CLEAR IC
```
Report
a routine report filed through ARP
B38M at 32,000 ft, 4 nm southwest, 4:45 am PDT (11:45 UTC): light chop turbulence. 1158 nm along the route, 4 nm southwest of the line.
as filed, and in English
```
FOD UA /OV FOD285060/TM 1145/FL320/TP B38M/TB CONS LGT CHOP OCNL MOD CHOP
```
Report
a routine report filed through FOD
Where
60 nm west (285°) of FOD
Time
11:45 UTC
Height
at 32,000 ft
Aircraft
B38M
Turbulence
continuous light chop occasional moderate chop
B38M at 32,000 ft, 16 nm north, 4:35 am PDT (11:35 UTC): light chop turbulence above 32,000 ft. 1248 nm along the route, 16 nm north of the line.
as filed, and in English
```
FOD UA /OV FOD075035/TM 1135/FL320/TP B38M/TB CONS LGT CHOP 320/INTMT LGT CHOP 340
```
Report
a routine report filed through FOD
Where
35 nm east (075°) of FOD
Time
11:35 UTC
Height
at 32,000 ft
Aircraft
B38M
Turbulence
continuous light chop 320/INTMT light chop at 34,000 ft
P46T at 31,000 ft, 26 nm northeast, 6:37 am PDT (13:37 UTC): light chop turbulence. 1288 nm along the route, 26 nm northeast of the line.
as filed, and in English
```
ALO UA /OV ALO270005/TM 1337/FL310/TP P46T/TB INTMT LGT CHOP
```
Report
a routine report filed through ALO
Where
5 nm west (270°) of ALO
Time
13:37 UTC
Height
at 31,000 ft
Aircraft
P46T
Turbulence
intermittent light chop
A321 at 32,000 ft, 14 nm northeast, 5:25 am PDT (12:25 UTC): light chop turbulence. 1328 nm along the route, 14 nm northeast of the line.
as filed, and in English
```
CID UA /OV CID360010/TM 1225/FL320/TP A321/TB INTMT LGT CHOP CONS LGT CHOP
```
Report
a routine report filed through CID
Where
10 nm north (360°) of CID
Time
12:25 UTC
Height
at 32,000 ft
Aircraft
A321
Turbulence
intermittent light chop continuous light chop
EMBRAER at 400 ft, 33 nm southeast, 6:37 am PDT (13:37 UTC): haze, remarks: ils runway 23 ceiling at 400 ft. At the destination end, 33 nm southeast of the line.
as filed, and in English
```
BAK UA /OV KBAK/TM 1337/FL004/TP EMBRAER/WX HZ/RM ILS RWY 23 CEILING 004
```
Report
a routine report filed through BAK
Where
over KBAK
Time
13:37 UTC
Height
at 400 ft
Aircraft
EMBRAER
Weather
haze
Remarks
ils runway 23 ceiling at 400 ft
G280 at 200 ft, 33 nm southeast, 6:10 am PDT (13:10 UTC): fog, remarks: ils runway 23 runway environment aquired at at 20,000 ft feet above ground. At the destination end, 33 nm southeast of the line.
as filed, and in English
```
BAK UA /OV KBAK/TM 1310/FL002/TP G280/WX FG/RM ILS RWY 23 RUNWAY ENVIRONMENT AQUIRED AT 200 FEET AGL
```
Report
a routine report filed through BAK
Where
over KBAK
Time
13:10 UTC
Height
at 200 ft
Aircraft
G280
Weather
fog
Remarks
ils runway 23 runway environment aquired at at 20,000 ft feet above ground

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 17 forecast points nearest it (SEA, YKM, GEG, LWS, GPI, GTF, BIL, MLS, RAP, PIR, FSD, MCW, DSM, DBQ, BRL, JOT, IND). 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 18 kt	−12 kt		132 kt	12 h 15 min	10:19 pm EDT (02:19 UTC)
5,500 ft	260° at 12 kt	−10 kt	7 °C	130 kt	12 h 27 min	10:31 pm EDT (02:31 UTC)
7,500 ft	250° at 12 kt	−9 kt	9 °C	129 kt	12 h 33 min	10:37 pm EDT (02:37 UTC)
9,500 ft	250° at 13 kt	−9 kt	3 °C	129 kt	12 h 33 min	10:37 pm EDT (02:37 UTC)
11,500 ft	250° at 14 kt	−10 kt	0 °C	130 kt	12 h 27 min	10:31 pm EDT (02:31 UTC)
13,500 ft	250° at 15 kt	−10 kt	-3 °C	130 kt	12 h 27 min	10:31 pm EDT (02:31 UTC)
15,500 ft	250° at 15 kt	−10 kt	-7 °C	130 kt	12 h 27 min	10:31 pm EDT (02:31 UTC)
17,500 ft	240° at 15 kt	−10 kt	-11 °C	130 kt	12 h 27 min	10:31 pm EDT (02:31 UTC)
18,000 ft FL180	240° at 15 kt	−10 kt	-12 °C	130 kt	12 h 27 min	10:31 pm EDT (02:31 UTC)
24,000 ft FL240	240° at 24 kt	−16 kt	-24 °C	136 kt	11 h 54 min	9:58 pm EDT (01:58 UTC)
30,000 ft FL300	250° at 29 kt	−22 kt	-35 °C	142 kt	11 h 24 min	9:28 pm EDT (01:28 UTC)
34,000 ft FL340	250° at 37 kt	−30 kt	-39 °C	150 kt	10 h 47 min	8:51 pm EDT (00:51 UTC)
39,000 ft FL390	260° at 45 kt	−39 kt	-46 °C	159 kt	10 h 11 min	8:15 pm EDT (00:15 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; 25 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; 48 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°
GEG	used from 150 nm out; 32 nm from the line		060/7 -2°	070/12 -6°	050/8 -8°	120/11 -21°	110/18 -33°	030/22 -37°	040/6 -38°	240/7 -41°
LWS	used from 250 nm out; 69 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°
GPI	used from 300 nm out; 87 nm from the line		090/8 -4°	140/7 -7°	090/10 -8°	110/10 -19°	210/25 -30°	200/24 -40°	210/31 -39°	210/35 -42°
GTF	used from 349 nm out; 88 nm from the line		L/V	L/V -7°	240/8 -8°	240/30 -14°	240/40 -28°	210/52 -38°	210/76 -38°	220/72 -43°
BIL	used from 499 nm out; 53 nm from the line		300/14	270/19 -2°	260/26 -2°	220/28 -13°	210/51 -25°	220/56 -33°	220/61 -39°	220/72 -45°
MLS	used from 649 nm out; 49 nm from the line		290/17 -1°	250/18 0°	230/25 0°	220/31 -11°	220/32 -24°	220/50 -32°	220/60 -38°	230/71 -46°
RAP	used from 749 nm out; 77 nm from the line		250/28 16°	260/31 10°	240/25 4°	210/35 -10°	200/45 -23°	230/47 -31°	230/47 -36°	230/51 -46°
PIR	used from 849 nm out; 61 nm from the line		230/15 15°	220/22 14°	220/24 6°	200/32 -10°	210/48 -22°	240/45 -33°	240/43 -37°	250/55 -46°
FSD	used from 998 nm out; 72 nm from the line	210/20	230/23 21°	220/25 14°	230/30 5°	230/26 -9°	240/30 -21°	270/33 -36°	260/47 -37°	270/58 -47°
MCW	used from 1198 nm out; 48 nm from the line	250/36	250/24 19°	240/26 11°	250/30 5°	270/22 -9°	260/30 -21°	260/31 -36°	280/53 -38°	280/66 -48°
DSM	used from 1248 nm out; 51 nm from the line	250/47	260/25 20°	240/19 11°	240/31 5°	250/26 -9°	260/38 -20°	260/47 -34°	270/58 -37°	270/61 -47°
DBQ	used from 1298 nm out; 68 nm from the line	250/27	260/23 17°	240/26 10°	260/30 4°	280/26 -9°	280/36 -21°	270/41 -36°	280/52 -41°	290/67 -48°
BRL	used from 1348 nm out; 47 nm from the line	250/32	250/19 17°	260/15 11°	270/16 3°	290/23 -7°	260/42 -20°	270/52 -34°	280/63 -39°	290/64 -48°
JOT	used from 1448 nm out; 58 nm from the line	250/25	260/22 14°	250/17 9°	270/21 5°	280/28 -8°	280/36 -20°	270/41 -35°	280/57 -42°	290/65 -50°
IND	used from 1548 nm out; 45 nm from the line	270/22	290/19 15°	270/19 8°	270/18 4°	290/28 -7°	280/35 -20°	270/37 -34°	300/51 -42°	300/61 -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
SEA Seattle, WA	departure	VFR Sky: a few clouds at 8,000 feet	from the southeast (130°) at 7 knots	10+ mi	none	432 ft	6:53 am PDT (13:53 UTC)
MWH Moses Lake, WA	120 nm out, 6 nm southeast of the line, tower	VFR	from the north (010°) at 4 knots	10+ mi	none	1,188 ft	13:52 UTC
PUW Pullman/Moscow, WA	220 nm out, 23 nm south of the line	VFR Sky: overcast at 6,500 feet	from the northeast (050°) at 4 knots	10+ mi	6,500 ft	2,566 ft	13:53 UTC
HLN Helena, MT	429 nm out, 5 nm northwest of the line, tower	marginal VFR Sky: a broken layer at 2,000 feet, overcast at 4,300 feet	from the west (270°) at 6 knots	10+ mi	2,000 ft	3,877 ft	13:53 UTC
BIL Billings, MT	579 nm out, 15 nm southwest of the line, tower	VFR Sky: scattered clouds at 2,100 feet, overcast at 3,700 feet	from the southwest (220°) at 4 knots	10+ mi	3,700 ft	3,662 ft	13:53 UTC
PIR Pierre, SD	939 nm out, 4 nm northwest of the line	low IFR Sky: overcast at 400 feet Weather: mist	from the north (350°) at 8 knots	1.75 mi	400 ft	1,744 ft	13:53 UTC
FSD Sioux Falls, SD	1098 nm out, 11 nm north of the line, tower	VFR Sky: a few clouds at 10,000 feet, scattered clouds at 25,000 feet	from the northeast (050°) at 4 knots	10+ mi	none	1,430 ft	13:56 UTC
POH Pocahontas, IA	1198 nm out, 2 nm south of the line	no report just now				1,225 ft
MLI Moline, IL	1398 nm out, 5 nm northeast of the line, tower	VFR	from the south-southwest (210°) at 8 knots	10+ mi	none	589 ft	13:52 UTC
BMI Bloomington/Normal, IL	1488 nm out, 16 nm south of the line, tower	VFR	from the south-southwest (200°) at 8 knots	10+ mi	none	871 ft	13:56 UTC
IND Indianapolis, IN	destination	VFR Sky: a few clouds at 24,000 feet, a broken layer at 30,000 feet	from the south-southwest (200°) at 6 knots	10+ mi	30,000 ft	796 ft	9:54 am EDT (13:54 UTC)

The highest airport on this list sits at 3,877 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At IND when you get there the forecast at the estimated arrival, 8:15 pm EDT (00:15 UTC)

Wind from the south-southwest at 10 knots, visibility more than 6 miles, scattered clouds at 20,000 feet VFR

The whole forecast for IND

From Mon 8:00 am EDT (12:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 9:00 am EDT (13:00 UTC): wind from the south-southwest at 10 knots, visibility more than 6 miles, scattered clouds at 20,000 feet
From Mon 10:00 pm EDT (02:00 UTC): wind light and variable, visibility more than 6 miles, clear skies

The forecast for SEA, the departure

From Mon 5:00 am PDT (12:00 UTC): wind from the southeast at 5 knots, visibility more than 6 miles, clear skies
From Mon 9:00 am PDT (16:00 UTC): wind light and variable, 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
From Tue 4:00 am PDT (11:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, overcast at 10,000 feet

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

6/8927 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local on the route, 310 nm along the route · a VIP movement · starts Wednesday 14 October · ZSE
6/8923 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local on the route, 310 nm along the route · a VIP movement · starts Wednesday 14 October · ZLC

Daylight

Sunset at SEA 6:25 pm PDT (01:25 UTC), at IND 7:10 pm EDT (23:10 UTC) (civil twilight ends 7:37 pm EDT (23:37 UTC)). At 120 knots the arrival at IND is after sunset there (7:10 pm EDT (23:10 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: Seattle-Tacoma International, Indianapolis International.