Plan a flight · Sun 6:55 pm PDT (01:55 UTC)

Ontario International to Philadelphia International ONT → PHL

2,043 nautical miles (2,351 statute miles) east on a straight line, true course 068°, about 056° magnetic at the departure end (variation 12E). At 120 knots that is 12 h 10 min at the quickest height in today's winds (34,000 ft, a 48-knot tailwind), arriving about 10:05 am EDT (14:05 UTC). Right now ONT is VFR, wind from the west-southwest (240°) at 8 knots; PHL is IFR, wind from the northeast (040°) at 9 knots, gusting to 17. 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: 774 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 below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the first 149 nm of the route.
AIRMET SIERRA 6E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 50 nm of the route.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 60 to 329 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 169 to 399 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 189 to 727 nm out.
AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 199 to 309 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 478 to 638 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 528 to 598 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 528 to 687 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 747 to 1166 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 last 418 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1793 to 1943 nm out.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the route from 1823 to 2023 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 ONT.

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

urgent GLF6 at 45,000 ft, 28 nm northwest, 4:57 pm PDT (23:57 UTC): severe turbulence, remarks: a/c had to exit auto pilot, 45 degree pitch-zdv. 458 nm along the route, 28 nm northwest of the line.
as filed, and in English
```
FMN UUA /OV RSK280050/TM 2357/FL450/TP GLF6/TB SEV/RM A/C HAD TO EXIT AUTO PILOT, 45 DEGREE PITCH-ZDV
```
Report
an urgent report filed through FMN
Where
50 nm west (280°) of RSK
Time
23:57 UTC
Height
at 45,000 ft
Aircraft
GLF6
Turbulence
severe
Remarks
a/c had to exit auto pilot, 45 degree pitch-zdv
B38M at 14,000 ft, 4 nm northeast, 5:13 pm PDT (00:13 UTC): moderate turbulence, light rime icing, 8 °C. At the departure end, 4 nm northeast of the line.
as filed, and in English
```
ONT UA /OV ONT053034/TM 0013/FL140/TP B38M/TA 08/TB MODERATE TURBULENCE/IC LIGHT RIME ICE 190 - 170
```
Report
a routine report filed through ONT
Where
34 nm northeast (053°) of ONT
Time
00:13 UTC
Height
at 14,000 ft
Aircraft
B38M
Temperature
8 °C
Turbulence
moderate turbulence
Icing
light rime ice at 19,000 ft at 17,000 ft
GLF4 at 43,000 ft, 30 nm northwest, 5:15 pm PDT (00:15 UTC): moderate turbulence, remarks: zdvwc. 468 nm along the route, 30 nm northwest of the line.
as filed, and in English
```
FMN UA /OV RSK290045/TM 0015/FL430/TP GLF4/TB CONS MOD/RM ZDVWC
```
Report
a routine report filed through FMN
Where
45 nm west (290°) of RSK
Time
00:15 UTC
Height
at 43,000 ft
Aircraft
GLF4
Turbulence
continuous moderate
Remarks
zdvwc
GLF4 at 43,000 ft, 38 nm north, 5:09 pm PDT (00:09 UTC): moderate chop turbulence, remarks: ZDVWC-38. 518 nm along the route, 38 nm north of the line.
as filed, and in English
```
FMN UA /OV RSK360050/TM 0009/FL430/TP GLF4/TB MOD CHOP/RM ZDVWC-38
```
Report
a routine report filed through FMN
Where
50 nm north (360°) of RSK
Time
00:09 UTC
Height
at 43,000 ft
Aircraft
GLF4
Turbulence
moderate chop
Remarks
ZDVWC-38
B38M at 29,000 ft, 12 nm south, 5:55 pm PDT (00:55 UTC): moderate turbulence above 29,000 ft, remarks: zob. 1813 nm along the route, 12 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
UAL2761 at 31,000 ft, 44 nm south, 4:57 pm PDT (23:57 UTC): moderate turbulence, wind 218° at 58 knots. 1833 nm along the route, 44 nm south of the line.
as filed, and in English
```
ARP UAL2761 3917N 07949W 2357 F310 218/058KT TB CONT MOD TURB IC
```
Report
a routine report filed through ARP
A321 at 30,000 ft, 2 nm south, 4:49 pm PDT (23:49 UTC): moderate turbulence above 30,000 ft, remarks: zob. 1853 nm along the route, 2 nm south of the line.
as filed, and in English
```
2G9 UA /OV IHD/TM 2349/FL300/TP A321/TB MOD 300/RM ZOB
```
Report
a routine report filed through 2G9
Where
over IHD
Time
23:49 UTC
Height
at 30,000 ft
Aircraft
A321
Turbulence
moderate at 30,000 ft
Remarks
zob
E170 at 22,500 ft, 48 nm south, 4:44 pm PDT (23:44 UTC): moderate clear-air turbulence from 18,000 ft to 22,500 ft, remarks: during the descent FRDMM7 star. 1893 nm along the route, 48 nm south of the line.
as filed, and in English
```
OKV UA /OV ESL100020/TM 2344/FL225/TP E170/TB CONS MOD CAT 180-225/RM DURD FRDMM7 STAR
```
Report
a routine report filed through OKV
Where
20 nm east (100°) of ESL
Time
23:44 UTC
Height
at 22,500 ft
Aircraft
E170
Turbulence
continuous moderate clear-air turbulence from 18,000 ft to 22,500 ft
Remarks
during the descent FRDMM7 star
E145 at 12,000 ft, 12 nm north, 5:43 pm PDT (00:43 UTC): moderate turbulence. At the destination end, 12 nm north 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
E75L at 20,000 ft, 13 nm south, 5:41 pm PDT (00:41 UTC): moderate turbulence above 20,000 ft. At the destination end, 13 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
A21N at 18,000 ft, 20 nm north, 5:38 pm PDT (00:38 UTC): moderate clear-air turbulence. At the destination end, 20 nm north of the line.
as filed, and in English
```
PTW UA /OV PTW/TM 0038/FL180/TP A21N/TB MOD CAT
```
Report
a routine report filed through PTW
Where
over PTW
Time
00:38 UTC
Height
at 18,000 ft
Aircraft
A21N
Turbulence
moderate clear-air turbulence
BCS3 at 19,000 ft, 39 nm south, 5:18 pm PDT (00:18 UTC): moderate turbulence above 17,000 ft, -9 °C. At the destination end, 39 nm south of the line.
as filed, and in English
```
DOV UA /OV ENO/TM 0018/FL190/TP BCS3/TA M09/TB MOD 170
```
Report
a routine report filed through DOV
Where
over ENO
Time
00:18 UTC
Height
at 19,000 ft
Aircraft
BCS3
Temperature
−9 °C
Turbulence
moderate at 17,000 ft
SLG4 at 3,000 ft, 16 nm west, 6:33 pm PDT (01:33 UTC): scattered clouds above 4,000 ft. At the departure end, 16 nm west of the line.
as filed, and in English
```
EMT UA /OV EMT070006/TM 0133/FL030/TP SLG4/SK SCT040
```
Report
a routine report filed through EMT
Where
6 nm east (070°) of EMT
Time
01:33 UTC
Height
at 3,000 ft
Aircraft
SLG4
Sky
scattered clouds from 4,000 ft
B737 at 6,400 ft, 31 nm southwest, 6:30 pm PDT (01:30 UTC): a broken layer from 3,300 ft to 6,400 ft. At the departure end, 31 nm southwest of the line.
as filed, and in English
```
LGB UA /OV LGB/TM 0130/FL064/TP B737/SK BKN033-TOP064
```
Report
a routine report filed through LGB
Where
over LGB
Time
01:30 UTC
Height
at 6,400 ft
Aircraft
B737
Sky
a broken layer from 3,300 ft, tops 6,400 ft

16 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 18 forecast points nearest it (ONT, LAS, PRC, FMN, ALS, PUB, GCK, SLN, MKC, COU, STL, SPI, IND, CVG, CMH, AGC, PSB, ACY). 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	220° at 10 kt	−8 kt		128 kt	15 h 58 min	1:53 pm EDT (17:53 UTC)
5,500 ft	230° at 14 kt	−13 kt	16 °C	133 kt	15 h 22 min	1:17 pm EDT (17:17 UTC)
7,500 ft	230° at 17 kt	−17 kt	12 °C	137 kt	14 h 55 min	12:50 pm EDT (16:50 UTC)
9,500 ft	240° at 18 kt	−18 kt	9 °C	138 kt	14 h 48 min	12:43 pm EDT (16:43 UTC)
11,500 ft	240° at 19 kt	−19 kt	5 °C	139 kt	14 h 42 min	12:37 pm EDT (16:37 UTC)
13,500 ft	240° at 20 kt	−21 kt	1 °C	141 kt	14 h 29 min	12:24 pm EDT (16:24 UTC)
15,500 ft	240° at 22 kt	−23 kt	-3 °C	143 kt	14 h 17 min	12:12 pm EDT (16:12 UTC)
17,500 ft	240° at 24 kt	−25 kt	-8 °C	145 kt	14 h 05 min	12:00 pm EDT (16:00 UTC)
18,000 ft FL180	240° at 25 kt	−25 kt	-9 °C	145 kt	14 h 05 min	12:00 pm EDT (16:00 UTC)
24,000 ft FL240	240° at 29 kt	−30 kt	-20 °C	150 kt	13 h 37 min	11:32 am EDT (15:32 UTC)
30,000 ft FL300	250° at 43 kt	−43 kt	-31 °C	163 kt	12 h 32 min	10:27 am EDT (14:27 UTC)
34,000 ft FL340	250° at 47 kt	−48 kt	-38 °C	168 kt	12 h 10 min	10:05 am EDT (14:05 UTC)
39,000 ft FL390	250° at 46 kt	−47 kt	-48 °C	167 kt	12 h 14 min	10:09 am EDT (14:09 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
ONT	used from 0 nm out; 25 nm from the line	230/11	200/17 6°	230/27 4°	230/32 -2°	210/39 -12°	220/51 -20°	220/48 -29°	210/51 -34°	210/52 -44°
LAS	used from 100 nm out; 76 nm from the line		200/25 11°	230/22 5°	240/25 -1°	220/37 -12°	220/44 -21°	210/52 -27°	210/60 -34°	220/58 -44°
PRC	used from 199 nm out; 65 nm from the line			200/36 6°	210/46 0°	220/60 -10°	220/75 -19°	220/66 -26°	230/70 -33°	230/59 -45°
FMN	used from 349 nm out; 112 nm from the line			220/25 13°	220/28 4°	210/51 -9°	220/59 -21°	230/78 -30°	230/77 -36°	230/66 -46°
ALS	used from 548 nm out; 34 nm from the line				210/32 5°	230/48 -8°	230/49 -20°	230/78 -30°	240/74 -36°	240/61 -47°
PUB	used from 648 nm out; 39 nm from the line			210/24 16°	210/28 8°	230/43 -8°	240/42 -21°	240/77 -30°	240/72 -36°	250/51 -47°
GCK	used from 747 nm out; 82 nm from the line		200/35 21°	220/34 14°	240/30 8°	240/27 -6°	240/31 -17°	240/53 -30°	250/55 -39°	250/60 -50°
SLN	used from 947 nm out; 31 nm from the line	190/37	220/39 20°	240/31 14°	250/24 7°	260/25 -7°	250/26 -17°	250/44 -31°	260/47 -40°	260/47 -50°
MKC	used from 1096 nm out; 27 nm from the line	200/28	220/30 16°	270/20 11°	280/22 7°	260/27 -6°	270/27 -18°	280/38 -32°	270/38 -40°	280/50 -52°
COU	used from 1196 nm out; 53 nm from the line	210/16	220/19 15°	240/33 10°	250/29 7°	280/21 -6°	280/19 -18°	300/34 -31°	300/40 -42°	300/60 -52°
STL	used from 1295 nm out; 58 nm from the line	210/13	260/16 17°	270/21 10°	280/24 5°	310/20 -7°	320/22 -18°	320/44 -33°	320/59 -43°	310/69 -51°
SPI	used from 1345 nm out; 11 nm from the line	210/13	260/11 17°	270/18 10°	290/21 4°	310/20 -8°	330/25 -19°	320/49 -34°	320/60 -44°	320/59 -50°
IND	used from 1445 nm out; 64 nm from the line	320/10	350/30 16°	350/32 10°	350/30 4°	340/31 -10°	340/42 -21°	340/49 -37°	320/46 -41°	320/47 -47°
CVG	used from 1594 nm out; 57 nm from the line	350/13	340/20 13°	340/22 8°	350/30 3°	340/30 -9°	340/38 -21°	330/37 -35°	320/38 -40°	310/35 -47°
CMH	used from 1644 nm out; 21 nm from the line	340/14	320/13 12°	350/12 8°	360/10 2°	350/27 -10°	340/20 -22°	320/31 -35°	270/25 -39°	260/32 -48°
AGC	used from 1744 nm out; 61 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°
PSB	used from 1893 nm out; 55 nm from the line		260/13 13°	220/12 8°	220/11 4°	230/27 -11°	210/31 -21°	220/73 -32°	220/75 -40°	230/66 -50°
ACY	used from 1993 nm out; 62 nm from the line	230/15	230/22 15°	230/31 11°	230/27 6°	230/40 -7°	230/51 -17°	230/71 -31°	230/81 -41°	230/86 -53°

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
ONT Ontario, CA	departure	VFR Sky: scattered clouds at 4,900 feet, a broken layer at 12,000 feet	from the west-southwest (240°) at 8 knots	10+ mi	12,000 ft	944 ft	5:53 pm PDT (00:53 UTC)
SBD San Bernardino, CA	20 nm out, 5 nm south of the line, tower	marginal VFR Sky: overcast at 3,000 feet	from the west-northwest (290°) at 4 knots	10+ mi	3,000 ft	1,159 ft	01:55 UTC
GCN Grand Canyon, AZ	289 nm out, 11 nm north of the line, tower	IFR Sky: a broken layer at 500 feet, overcast at 1,000 feet Weather: mist	from the southwest (230°) at 17 knots, gusting to 25	5 mi	500 ft	6,608 ft	00:54 UTC
FMN Farmington, NM	488 nm out, 4 nm south of the line, tower	VFR	from the west (270°) at 9 knots	10+ mi	none	5,506 ft	00:53 UTC
LAA Lamar, CO	757 nm out, 6 nm northeast of the line	VFR	from the south (180°) at 15 knots	10+ mi	none	3,705 ft	00:53 UTC
SLN Salina, KS	1006 nm out, 5 nm southwest of the line, tower	VFR	from the south (170°) at 13 knots	10+ mi	none	1,288 ft	00:53 UTC
TOP Topeka, KS	1096 nm out, 4 nm southeast of the line, tower	VFR	from the southeast (140°) at 6 knots	10+ mi	none	881 ft	00:53 UTC
DEC Decatur, IL	1415 nm out, 4 nm north of the line, tower	VFR	calm	10+ mi	none	681 ft	00:54 UTC
DAY Dayton, OH	1634 nm out, 7 nm southwest of the line, tower	marginal VFR Sky: scattered clouds at 800 feet, overcast at 1,400 feet	from the northwest (320°) at 5 knots	8 mi	1,400 ft	1,009 ft	01:40 UTC
CMH Columbus, OH	1694 nm out, 4 nm west of the line, tower	IFR Sky: overcast at 800 feet	from the northwest (310°) at 6 knots	9 mi	800 ft	815 ft	01:51 UTC
LNS Lancaster, PA	1993 nm out, 12 nm north of the line, tower	marginal VFR Sky: a broken layer at 1,000 feet, overcast at 1,400 feet Weather: rain, mist	from the north-northeast (020°) at 5 knots	5 mi	1,000 ft	402 ft	00:53 UTC
PHL Philadelphia, PA	destination	IFR Sky: a broken layer at 600 feet, overcast at 900 feet Weather: mist	from the northeast (040°) at 9 knots, gusting to 17	6 mi	600 ft	35 ft	9:11 pm EDT (01:11 UTC)

The highest airport on this list sits at 6,608 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At PHL when you get there the forecast at the estimated arrival, 10:05 am EDT (14:05 UTC)

Wind from the north at 12 knots, gusting to 19, visibility more than 6 miles, overcast at 2,500 feet marginal VFR

The whole forecast for PHL

From Sun 8:00 pm EDT (00:00 UTC): wind from the northeast at 10 knots, visibility 3 miles, light rain, mist, overcast at 800 feet
From Sun 11:00 pm EDT (03:00 UTC): wind from the north-northeast at 8 knots, visibility 5 miles, light rain, mist, overcast at 500 feet
From Mon 6:00 am EDT (10:00 UTC): wind from the north-northeast at 10 knots, visibility 5 miles, mist, overcast at 800 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the north at 12 knots, gusting to 19, visibility more than 6 miles, overcast at 2,500 feet
From Mon 2:00 pm EDT (18:00 UTC): wind from the north at 12 knots, gusting to 21, 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

The forecast for ONT, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the southwest at 11 knots, gusting to 18, visibility more than 6 miles, a few clouds at 3,000 feet, a broken layer at 5,000 feet
From Sun 11:00 pm PDT (06:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, showers nearby, overcast at 2,500 feet
From Mon 3:00 am PDT (10:00 UTC): wind from the west-southwest at 4 knots, visibility more than 6 miles, showers nearby, a few clouds at 2,500 feet, a broken layer at 5,000 feet
From Mon 11:00 am PDT (18:00 UTC): wind from the west-southwest at 5 knots, visibility more than 6 miles, a broken layer at 5,000 feet
From Mon 2:00 pm PDT (21:00 UTC): wind from the west-southwest at 11 knots, gusting to 18, visibility more than 6 miles, a broken layer at 5,000 feet
From Mon 8:00 pm PDT (03:00 UTC): wind from the west-southwest at 9 knots, visibility more than 6 miles, a broken layer at 6,000 feet

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

4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 19 nm from the route, at the departure end · security · ZLA
6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local on the route, 159 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
6/7634 CENTRALIA, MO, Monday, October 12, 2026 UTC 21 nm from the route, 1255 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZKC

Daylight

Sunset at ONT 6:20 pm PDT (01:20 UTC), at PHL 6:26 pm EDT (22:26 UTC) (civil twilight ends 6:53 pm EDT (22:53 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 Southwest · loop National Weather Service

Radar now, the southern 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: Ontario International, Philadelphia International.