Plan a flight · Sun 11:39 pm EDT (03:39 UTC)

Trenton Mercer Airport to Purdue University Airport TTN → LAF

554 nautical miles (638 statute miles) west on a straight line, true course 275°, about 287° magnetic at the departure end (variation 12W). At 120 knots that is 4 h 52 min at the quickest height in today's winds (4,500 ft, a 6-knot headwind), arriving about 4:31 am EDT (08:31 UTC), after sunset at the destination. Right now TTN is IFR, wind from the north (010°) at 9 knots; LAF is VFR, wind calm. 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: 4 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 E11E: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 20 knots, until 12:55 am EDT (04:55 UTC). Over the first 99 nm of the route.

as issued

WSUS31 KKCI 120255
MKCE WST 120255
CONVECTIVE SIGMET 11E
VALID UNTIL 0455Z
NY NJ PA DE MD VA DC WV AND DE NJ NY MD CT VA CSTL WTRS
FROM 20NE JFK-90SE SIE-20NNW ORF-30ENE EKN-10S JST-20NE JFK
AREA EMBD TS MOV FROM 24020KT. TOPS TO FL340.

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 495 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 257 nm of the route.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 13,000 ft. Over the first 69 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 89 to 248 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 TTN.

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

A319 at 23,000 ft, 23 nm southeast, 11:21 pm EDT (03:21 UTC): moderate turbulence. At the departure end, 23 nm southeast of the line.
as filed, and in English
```
MJX UA /OV CYN345010/TM 0321/FL230/TP A319/TB MOD
```
Report
a routine report filed through MJX
Where
10 nm north (345°) of CYN
Time
03:21 UTC
Height
at 23,000 ft
Aircraft
A319
Turbulence
moderate
B38M at 6,000 ft, 39 nm northeast, 8:47 pm EDT (00:47 UTC): moderate turbulence. At the departure end, 39 nm northeast of the line.
as filed, and in English
```
EWR UA /OV 2 NW OF EWR/TM 0047/FL60/TP B38M/TB MODERATE
```
Report
a routine report filed through EWR
Where
2 northwest of ewr
Time
00:47 UTC
Height
at 6,000 ft
Aircraft
B38M
Turbulence
moderate
E75L at 20,000 ft, 39 nm south, 8:41 pm EDT (00:41 UTC): moderate turbulence above 20,000 ft. 30 nm along the route, 39 nm south of the line.
as filed, and in English
```
ILG UA /OV DQO/TM 0041/FL200/TP E75L/TB MOD 200
```
Report
a routine report filed through ILG
Where
over DQO
Time
00:41 UTC
Height
at 20,000 ft
Aircraft
E75L
Turbulence
moderate at 20,000 ft
E145 at 12,000 ft, 15 nm south, 8:43 pm EDT (00:43 UTC): moderate turbulence. 69 nm along the route, 15 nm south of the line.
as filed, and in English
```
LNS UA /OV LRP/TM 0043/FL120/TP E145/TB CONS MOD
```
Report
a routine report filed through LNS
Where
over LRP
Time
00:43 UTC
Height
at 12,000 ft
Aircraft
E145
Turbulence
continuous moderate
UAL1558 at 30,000 ft, 12 nm south, 10:22 pm EDT (02:22 UTC): moderate turbulence, -36 °C, wind 240° at 50 knots. 129 nm along the route, 12 nm south of the line.
as filed, and in English
```
ARP UAL1558 4014N 07742W 0222 F300 MS36 240/050KT TB MODERATE SK CLEAR IC NONE
```
Report
a routine report filed through ARP
B752 at 30,000 ft, 11 nm southwest, 10:26 pm EDT (02:26 UTC): moderate chop turbulence, remarks: zob. 139 nm along the route, 11 nm southwest of the line.
as filed, and in English
```
HGR UA /OV THS010020/TM 0226/FL300/TP B752/TB MOD CHOP/RM ZOB
```
Report
a routine report filed through HGR
Where
20 nm north (010°) of THS
Time
02:26 UTC
Height
at 30,000 ft
Aircraft
B752
Turbulence
moderate chop
Remarks
zob
B38M at 29,000 ft, 40 nm south, 8:55 pm EDT (00:55 UTC): moderate turbulence above 29,000 ft, remarks: zob. 248 nm along the route, 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
A320 at 34,000 ft, 16 nm north, 10:03 pm EDT (02:03 UTC): moderate chop turbulence. 436 nm along the route, 16 nm north of the line.
as filed, and in English
```
FWA UA /OV FWA115040/TM 0203/FL340/TP A320/TB MOD CHOP
```
Report
a routine report filed through FWA
Where
40 nm southeast (115°) of FWA
Time
02:03 UTC
Height
at 34,000 ft
Aircraft
A320
Turbulence
moderate chop
B739 at 700 ft, 39 nm northeast, 10:04 pm EDT (02:04 UTC): a broken layer above 700 ft. At the departure end, 39 nm northeast of the line.
as filed, and in English
```
EWR UA /OV 2 MILE FINAL RY04R/TM 0204/FL007/TP B739/SK 007BKN
```
Report
a routine report filed through EWR
Where
2 mile final runway 04R
Time
02:04 UTC
Height
at 700 ft
Aircraft
B739
Sky
007BKN
A320 at 19,000 ft, 30 nm southeast, 9:34 pm EDT (01:34 UTC): light to moderate turbulence, remarks: flight level from 19,000 ft to 22,000 ft. At the departure end, 30 nm southeast of the line.
as filed, and in English
```
MJX UA /OV CYN045010/TM 0134/FL190/TP A320/TB LGT-MOD/RM FL 190-220
```
Report
a routine report filed through MJX
Where
10 nm northeast (045°) of CYN
Time
01:34 UTC
Height
at 19,000 ft
Aircraft
A320
Turbulence
light to moderate
Remarks
flight level from 19,000 ft to 22,000 ft
E75S at 9,000 ft, 15 nm east, 9:22 pm EDT (01:22 UTC): light rime icing above 9,000 ft. At the departure end, 15 nm east of the line.
as filed, and in English
```
LGA UA /OV RBV/TM 0122/FL090/TP E75S/IC LGT RIME 090
```
Report
a routine report filed through LGA
Where
over RBV
Time
01:22 UTC
Height
at 9,000 ft
Aircraft
E75S
Icing
light rime at 9,000 ft
B38M at 1,000 ft, 39 nm northeast, 8:49 pm EDT (00:49 UTC): a broken layer above 1,000 ft. At the departure end, 39 nm northeast of the line.
as filed, and in English
```
EWR UA /OV FINAL RY04R/TM 0049/FL010/TP B38M/SK BKN010
```
Report
a routine report filed through EWR
Where
final runway 04R
Time
00:49 UTC
Height
at 1,000 ft
Aircraft
B38M
Sky
a broken layer from 1,000 ft
GLF5 at 600 ft, 13 nm south, 9:40 pm EDT (01:40 UTC): overcast above 600 ft, remarks: during the descent runway 06 pne. At the departure end, 13 nm south of the line.
as filed, and in English
```
PNE UA /OV PNE240001/TM 0140/FL006/TP GLF5/SK OVC006/RM DURD RY06 PNE
```
Report
a routine report filed through PNE
Where
1 nm southwest (240°) of PNE
Time
01:40 UTC
Height
at 600 ft
Aircraft
GLF5
Sky
overcast from 600 ft
Remarks
during the descent runway 06 pne
CL30 at 500 ft, 39 nm south, 9:55 pm EDT (01:55 UTC): remarks: during the descent runway 09 approach lights in sight at 550FT. 30 nm along the route, 39 nm south of the line.
as filed, and in English
```
ILG UA /OV KILG/TM 0155/FL005/TP CL30/RM DURD RWY09 APPROACH LIGHTS IN SIGHT AT 550FT
```
Report
a routine report filed through ILG
Where
over KILG
Time
01:55 UTC
Height
at 500 ft
Aircraft
CL30
Remarks
during the descent runway 09 approach lights in sight at 550FT

8 more routine reports are on the map.

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 8 forecast points nearest it (ACY, AVP, PSB, AGC, CLE, CMH, FWA, 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
4,500 ft	330° at 12 kt	+6 kt	13 °C	114 kt	4 h 52 min	4:31 am EDT (08:31 UTC)
6,500 ft	330° at 15 kt	+7 kt	12 °C	113 kt	4 h 54 min	4:33 am EDT (08:33 UTC)
8,500 ft	320° at 15 kt	+9 kt	9 °C	111 kt	4 h 59 min	4:38 am EDT (08:38 UTC)
10,500 ft	320° at 14 kt	+9 kt	6 °C	111 kt	4 h 59 min	4:38 am EDT (08:38 UTC)
12,500 ft	310° at 13 kt	+9 kt	2 °C	111 kt	4 h 59 min	4:38 am EDT (08:38 UTC)
14,500 ft	310° at 16 kt	+11 kt	-2 °C	109 kt	5 h 05 min	4:44 am EDT (08:44 UTC)
16,500 ft	310° at 18 kt	+13 kt	-6 °C	107 kt	5 h 11 min	4:50 am EDT (08:50 UTC)
18,000 ft FL180	310° at 20 kt	+15 kt	-10 °C	105 kt	5 h 17 min	4:56 am EDT (08:56 UTC)
24,000 ft FL240	310° at 26 kt	+20 kt	-21 °C	100 kt	5 h 32 min	5:11 am EDT (09:11 UTC)
30,000 ft FL300	310° at 33 kt	+26 kt	-36 °C	94 kt	5 h 54 min	5:33 am EDT (09:33 UTC)
34,000 ft FL340	290° at 42 kt	+37 kt	-42 °C	83 kt	6 h 40 min	6:19 am EDT (10:19 UTC)
39,000 ft FL390	300° at 39 kt	+34 kt	-48 °C	86 kt	6 h 27 min	6:06 am EDT (10:06 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
ACY	used from 0 nm out; 62 nm from the line	220/19	220/18 14°	210/36 9°	210/35 5°	220/36 -8°	240/49 -21°	220/90 -31°	230/103 -40°	230/81 -50°
AVP	used from 50 nm out; 67 nm from the line	150/5	350/13 12°	270/20 8°	260/17 4°	260/25 -11°	240/31 -22°	240/54 -35°	230/61 -41°	240/55 -49°
PSB	used from 99 nm out; 38 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 198 nm out; 14 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 297 nm out; 54 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°
CMH	used from 347 nm out; 31 nm from the line	330/15	340/22 14°	340/24 9°	340/23 4°	340/35 -9°	340/49 -20°	340/58 -37°	330/70 -42°	340/55 -47°
FWA	used from 446 nm out; 31 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°
IND	used from 495 nm out; 44 nm from the line	290/16	310/20 16°	320/21 10°	330/13 3°	300/25 -7°	320/32 -19°	330/46 -34°	320/61 -43°	320/63 -50°

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
TTN Trenton, NJ	departure	IFR Sky: a broken layer at 600 feet, overcast at 1,300 feet Weather: light rain	from the north (010°) at 9 knots	10+ mi	600 ft	212 ft	10:53 pm EDT (02:53 UTC)
RDG Reading, PA	50 nm out, 4 nm northwest of the line, tower	IFR Sky: overcast at 800 feet Weather: mist	from the northeast (040°) at 9 knots	4 mi	800 ft	343 ft	02:54 UTC
MDT Harrisburg, PA	89 nm out, 11 nm south of the line, tower	IFR Sky: overcast at 800 feet	from the northwest (320°) at 4 knots	9 mi	800 ft	310 ft	03:25 UTC
AOO Altoona, PA	158 nm out, 9 nm south of the line	low IFR Sky: overcast at 200 feet Weather: mist	from the north-northeast (020°) at 4 knots	3 mi	200 ft	1,503 ft	03:30 UTC
JST Johnstown, PA	188 nm out, 10 nm southeast of the line, tower	low IFR Sky: sky obscured at 200 feet Weather: fog	from the east-northeast (070°) at 6 knots	0.25 mi	200 ft	2,284 ft	02:54 UTC
PIT Pittsburgh, PA	248 nm out, 1 nm west of the line, tower	IFR Sky: overcast at 800 feet	from the north-northeast (030°) at 5 knots	10+ mi	800 ft	1,202 ft	02:51 UTC
CAK Akron, OH	307 nm out, 25 nm north of the line, tower	marginal VFR Sky: scattered clouds at 800 feet, overcast at 1,600 feet Weather: light drizzle	from the northwest (320°) at 4 knots	8 mi	1,600 ft	1,225 ft	03:12 UTC
MFD Mansfield, OH	356 nm out, 19 nm north of the line, tower	low IFR Sky: overcast at 300 feet Weather: mist	from the northwest (310°) at 3 knots	6 mi	300 ft	1,297 ft	02:52 UTC
AXV Wapakoneta, OH	436 nm out, 2 nm east of the line	marginal VFR Sky: overcast at 1,000 feet	from the west-northwest (300°) at 3 knots	10+ mi	1,000 ft	912 ft	03:04 UTC
MIE Muncie, IN	485 nm out, 13 nm south of the line, tower	marginal VFR Weather: mist	calm	3 mi	none	937 ft	03:00 UTC
GUS Peru, IN	515 nm out, 13 nm north of the line, tower	VFR	from the southeast (140°) at 5 knots	10+ mi	none	810 ft	02:55 UTC
LAF Lafayette, IN	destination	VFR	calm	10+ mi	none	605 ft	10:54 pm EDT (02:54 UTC)

The highest airport on this list sits at 2,284 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At LAF when you get there the forecast at the estimated arrival, 4:31 am EDT (08:31 UTC)

Wind calm, visibility more than 6 miles, a few clouds at 25,000 feet VFR

The whole forecast for LAF

From Sun 8:00 pm EDT (00:00 UTC): wind calm, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the south-southwest at 8 knots, visibility more than 6 miles, scattered clouds at 20,000 feet
From Mon 2:00 pm EDT (18:00 UTC): wind from the southwest at 11 knots, gusting to 19, visibility more than 6 miles, scattered clouds at 20,000 feet

The forecast for TTN, the departure

From Sun 9:00 pm EDT (01:00 UTC): wind from the northeast at 8 knots, visibility 3 miles, light rain, mist, overcast at 800 feet
From Sun 11:00 pm EDT (03:00 UTC): wind from the north at 8 knots, visibility 5 miles, light rain, mist, overcast at 500 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the north at 10 knots, visibility 5 miles, mist, overcast at 800 feet
From Mon 12:00 pm EDT (16:00 UTC): wind from the north at 10 knots, visibility more than 6 miles, overcast at 2,500 feet
From Mon 2:00 pm EDT (18:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, overcast at 5,000 feet
From Mon 6:00 pm EDT (22:00 UTC): wind from the west-northwest at 8 knots, visibility more than 6 miles, scattered clouds at 25,000 feet

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

6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 8 nm from the route, 267 nm along the route · a VIP movement · today · ZOB
6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 8 nm from the route, 267 nm along the route · a VIP movement · today · ZOB

Daylight

Sunset at TTN 6:24 pm EDT (22:24 UTC), at LAF 7:12 pm EDT (23:12 UTC) (civil twilight ends 7:40 pm EDT (23:40 UTC)). At 120 knots the arrival at LAF is before sunrise there (7:55 am EDT (11:55 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, 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: Trenton Mercer Airport, Purdue University Airport.