Plan a flight · Sun 10:39 pm EDT (02:39 UTC)

Charlotte/Douglas International to San Francisco International CLT → SFO

1,990 nautical miles (2,291 statute miles) west on a straight line, true course 287°, about 294° magnetic at the departure end (variation 7W). At 120 knots that is 18 h 36 min at the quickest height in today's winds (4,500 ft, a 13-knot headwind), arriving about 2:15 pm PDT (21:15 UTC). Right now CLT is VFR, wind from the southwest (230°) at 8 knots; SFO is VFR, wind from the west-southwest (250°) at 9 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: 2,960 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 6W: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 11:55 pm EDT (03:55 UTC). Over the route from 1135 to 1264 nm out.

as issued

WSUS33 KKCI 120155
MKCW WST 120155
CONVECTIVE SIGMET 6W
VALID UNTIL 0355Z
CO NM
FROM 50SSW DEN-30NNE TBE-50SSW CME-50E SJN-20NE DVC-50SSW DEN
AREA TS MOV FROM 23040KT. TOPS TO FL340.

SIGMET W10W: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the southwest at 20 knots, until 11:55 pm EDT (03:55 UTC). Over the route from 1722 to 1772 nm out.
as issued
```
WSUS33 KKCI 120155
MKCW WST 120155
CONVECTIVE SIGMET 10W
VALID UNTIL 0355Z
NV
FROM 70SW TWF-40NNW BVL-40SW ELY-30ESE OAL-40WNW OAL-70SW TWF
AREA TS MOV FROM 23020KT. TOPS TO FL300.
```
AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 8,000 ft. Over the first 119 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 70 to 209 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 169 to 219 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 736 to 1075 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 1085 to 1712 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 1115 to 1752 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 1184 to 1383 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1184 to 1284 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 1363 to 1772 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1373 to 1682 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 1443 to 1543 nm out.
AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the route from 1722 to 1861 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 40 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 CLT.

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

urgent B407 at 10,000 ft, 25 nm north, 10:13 pm EDT (02:13 UTC): moderate to severe turbulence. 1164 nm along the route, 25 nm north of the line.
as filed, and in English
```
COS UUA /OV 10 W COS/TM 0213/FL100/TP B407/TB MDT-SEV
```
Report
an urgent report filed through COS
Where
10 west cos
Time
02:13 UTC
Height
at 10,000 ft
Aircraft
B407
Turbulence
mdt-sev
BE9L at 24,500 ft, 17 nm south, 10:21 pm EDT (02:21 UTC): moderate turbulence, remarks: ZDVWC-41. 1184 nm along the route, 17 nm south of the line.
as filed, and in English
```
PUB UA /OV PUB250040/TM 0221/FL245/TP BE9L/TB OCNL MOD/RM ZDVWC-41
```
Report
a routine report filed through PUB
Where
40 nm west (250°) of PUB
Time
02:21 UTC
Height
at 24,500 ft
Aircraft
BE9L
Turbulence
occasional moderate
Remarks
ZDVWC-41
B738 at 18,000 ft, 35 nm north, 10:02 pm EDT (02:02 UTC): moderate chop turbulence from 18,000 ft to 25,000 ft, remarks: during the climb ZDVWC-41. 1184 nm along the route, 35 nm north of the line.
as filed, and in English
```
COS UA /OV BRK270030/TM 0202/FL180/TP B738/TB MOD CHOP 180-250/RM DURC ZDVWC-41
```
Report
a routine report filed through COS
Where
30 nm west (270°) of BRK
Time
02:02 UTC
Height
at 18,000 ft
Aircraft
B738
Turbulence
moderate chop from 18,000 ft to 25,000 ft
Remarks
during the climb ZDVWC-41
UAL2238 at 38,000 ft, 21 nm south, 7:44 pm EDT (23:44 UTC): moderate turbulence, wind 244° at 64 knots. 1254 nm along the route, 21 nm south of the line.
as filed, and in English
```
ARP UAL2238 3807N 10649W 2344 F380 244/064KT TB CONT MOD TURB IC
```
Report
a routine report filed through ARP
SW4 at 15,000 ft, 43 nm south, 9:39 pm EDT (01:39 UTC): moderate turbulence, light rime icing, freezing, rain, 0 °C, remarks: instrument conditions ZDVWC-36. 1314 nm along the route, 43 nm south of the line.
as filed, and in English
```
CEZ UA /OV CEZ030030/TM 0139/FL150/TP SW4/SK BASE150/WX FZ RA/TA 00/TB CONS MOD/IC LGT RIME/RM IMC ZDVWC-36
```
Report
a routine report filed through CEZ
Where
30 nm northeast (030°) of CEZ
Time
01:39 UTC
Height
at 15,000 ft
Aircraft
SW4
Sky
BASE150
Weather
freezing, rain
Temperature
0 °C
Turbulence
continuous moderate
Icing
light rime
Remarks
instrument conditions ZDVWC-36
E170 at 10,000 ft, 31 nm north, 7:41 pm EDT (23:41 UTC): moderate turbulence up to 10,000 ft, remarks: during the climb. 1334 nm along the route, 31 nm north of the line.
as filed, and in English
```
GJT UA /OV GJT144009/TM 2341/FL100/TP E170/TB MOD SFC-100/RM DURC
```
Report
a routine report filed through GJT
Where
9 nm southeast (144°) of GJT
Time
23:41 UTC
Height
at 10,000 ft
Aircraft
E170
Turbulence
moderate from the surface to 10,000 ft
Remarks
during the climb
A320 descending, 3 nm southwest, 9:52 pm EDT (01:52 UTC): remarks: base 2,100 ft. 149 nm along the route, 3 nm southwest of the line.
as filed, and in English
```
TYS UA /OV 4 NE TYS/TM 0152/FLDURD/TP A320/RM BASE 021
```
Report
a routine report filed through TYS
Where
4 northeast tys
Time
01:52 UTC
Height
during the descent
Aircraft
A320
Remarks
base 2,100 ft
B739 at 34,000 ft, 30 nm north, 9:51 pm EDT (01:51 UTC): light to moderate chop turbulence, remarks: zme. 289 nm along the route, 30 nm north of the line.
as filed, and in English
```
BWG UA /OV BWG270010/TM 0151/FL340/TP B739/TB CONS LGT OCNL MOD CHOP/RM ZME
```
Report
a routine report filed through BWG
Where
10 nm west (270°) of BWG
Time
01:51 UTC
Height
at 34,000 ft
Aircraft
B739
Turbulence
continuous light occasional moderate chop
Remarks
zme
B738 at 34,000 ft, 4 nm east, 7:41 pm EDT (23:41 UTC): light to moderate chop turbulence, remarks: zme. 328 nm along the route, 4 nm east of the line.
as filed, and in English
```
CKV UA /OV CKV/TM 2341/FL340/TP B738/TB CONS LGT OCNL MOD CHOP/RM ZME
```
Report
a routine report filed through CKV
Where
over CKV
Time
23:41 UTC
Height
at 34,000 ft
Aircraft
B738
Turbulence
continuous light occasional moderate chop
Remarks
zme
B38M at 25,000 ft, 44 nm south, 8:12 pm EDT (00:12 UTC): light chop turbulence, remarks: ZME26. 368 nm along the route, 44 nm south of the line.
as filed, and in English
```
MKL UA /OV MKL045035/TM 0012/FL250/TP B38M/TB OCNL LGT CHOP/RM ZME26
```
Report
a routine report filed through MKL
Where
35 nm northeast (045°) of MKL
Time
00:12 UTC
Height
at 25,000 ft
Aircraft
B38M
Turbulence
occasional light chop
Remarks
ZME26
B737 at 31,000 ft, 25 nm north, 8:13 pm EDT (00:13 UTC): light chop turbulence, remarks: ZME25. 398 nm along the route, 25 nm north of the line.
as filed, and in English
```
PAH UA /OV CNG360015/TM 0013/FL310/TP B737/TB OCNL LGT CHOP/RM ZME25
```
Report
a routine report filed through PAH
Where
15 nm north (360°) of CNG
Time
00:13 UTC
Height
at 31,000 ft
Aircraft
B737
Turbulence
occasional light chop
Remarks
ZME25
A21N at 31,000 ft, 7 nm southeast, 8:24 pm EDT (00:24 UTC): remarks: mountain wave +/-10-20KT ZDVWC-29. 1145 nm along the route, 7 nm southeast of the line.
as filed, and in English
```
PUB UA /OV PUB/TM 0024/FL310/TP A21N/RM MTN WAVE +/-10-20KT ZDVWC-29
```
Report
a routine report filed through PUB
Where
over PUB
Time
00:24 UTC
Height
at 31,000 ft
Aircraft
A21N
Remarks
mountain wave +/-10-20KT ZDVWC-29
GLF6 at 40,000 ft, 43 nm north, 8:48 pm EDT (00:48 UTC): light to moderate chop turbulence, remarks: ZDVWC-46. 1164 nm along the route, 43 nm north of the line.
as filed, and in English
```
COS UA /OV COS340020/TM 0048/FL400/TP GLF6/TB LGT-MOD CHOP/RM ZDVWC-46
```
Report
a routine report filed through COS
Where
20 nm north (340°) of COS
Time
00:48 UTC
Height
at 40,000 ft
Aircraft
GLF6
Turbulence
light to moderate chop
Remarks
ZDVWC-46
B737 at 25,000 ft, 26 nm north, 8:29 pm EDT (00:29 UTC): light rime icing, 0 °C, remarks: during the climb ZDVWC-29. 1164 nm along the route, 26 nm north of the line.
as filed, and in English
```
COS UA /OV BRK242015/TM 0029/FL250/TP B737/SK TOP280/TA 00/IC LGT RIME/RM DURC ZDVWC-29
```
Report
a routine report filed through COS
Where
15 nm southwest (242°) of BRK
Time
00:29 UTC
Height
at 25,000 ft
Aircraft
B737
Sky
TOP280
Temperature
0 °C
Icing
light rime
Remarks
during the climb ZDVWC-29

7 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 16 forecast points nearest it (GSP, TYS, BNA, CGI, SGF, ICT, GCK, PUB, ALS, GJT, BCE, ELY, BIH, FAT, SAC, SFO). 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	240° at 16 kt	+13 kt	21 °C	107 kt	18 h 36 min	2:15 pm PDT (21:15 UTC)
6,500 ft	250° at 14 kt	+14 kt	14 °C	106 kt	18 h 46 min	2:25 pm PDT (21:25 UTC)
8,500 ft	240° at 17 kt	+16 kt	10 °C	104 kt	19 h 08 min	2:47 pm PDT (21:47 UTC)
10,500 ft	250° at 18 kt	+17 kt	6 °C	103 kt	19 h 19 min	2:58 pm PDT (21:58 UTC)
12,500 ft	250° at 18 kt	+18 kt	2 °C	102 kt	19 h 31 min	3:10 pm PDT (22:10 UTC)
14,500 ft	250° at 20 kt	+19 kt	-2 °C	101 kt	19 h 42 min	3:21 pm PDT (22:21 UTC)
16,500 ft	240° at 22 kt	+20 kt	-6 °C	100 kt	19 h 54 min	3:33 pm PDT (22:33 UTC)
18,000 ft FL180	240° at 24 kt	+21 kt	-9 °C	99 kt	20 h 06 min	3:45 pm PDT (22:45 UTC)
24,000 ft FL240	250° at 30 kt	+28 kt	-20 °C	92 kt	21 h 38 min	5:17 pm PDT (00:17 UTC)
30,000 ft FL300	250° at 41 kt	+41 kt	-30 °C	79 kt	25 h 11 min	8:50 pm PDT (03:50 UTC)
34,000 ft FL340	260° at 44 kt	+45 kt	-37 °C	75 kt	26 h 32 min	10:11 pm PDT (05:11 UTC)
39,000 ft FL390	260° at 38 kt	+40 kt	-47 °C	80 kt	24 h 52 min	8:31 pm PDT (03:31 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
GSP	used from 0 nm out; 46 nm from the line	320/22	340/19 13°	320/18 8°	310/24 5°	300/34 -7°	300/36 -18°	290/30 -33°	300/32 -39°	320/42 -49°
TYS	used from 100 nm out; 29 nm from the line	320/20	340/18 11°	340/32 9°	340/36 4°	330/37 -7°	330/38 -19°	330/50 -34°	330/53 -38°	330/44 -48°
BNA	used from 199 nm out; 63 nm from the line	310/20	340/20 17°	330/24 10°	340/22 5°	330/26 -6°	340/29 -18°	330/52 -33°	320/62 -41°	340/45 -50°
CGI	used from 348 nm out; 63 nm from the line	240/20	270/15 15°	280/15 11°	300/13 6°	290/20 -6°	280/24 -18°	300/34 -32°	300/47 -41°	310/49 -51°
SGF	used from 547 nm out; 45 nm from the line	230/33	230/28 15°	250/20 13°	240/18 7°	250/20 -6°	250/24 -17°	280/42 -31°	280/49 -40°	290/46 -51°
ICT	used from 697 nm out; 89 nm from the line	200/48	230/39 19°	240/24 14°	240/20 8°	240/22 -6°	250/31 -18°	250/61 -29°	260/58 -38°	270/54 -49°
GCK	used from 896 nm out; 48 nm from the line		220/48 21°	230/37 14°	250/30 8°	230/37 -6°	240/37 -20°	240/69 -28°	250/67 -37°	260/58 -48°
PUB	used from 1045 nm out; 75 nm from the line			230/25 13°	230/32 6°	220/44 -8°	230/49 -21°	240/70 -28°	240/67 -34°	240/58 -46°
ALS	used from 1194 nm out; 61 nm from the line				230/37 4°	220/54 -9°	230/62 -22°	240/77 -26°	240/74 -33°	230/59 -45°
GJT	used from 1244 nm out; 76 nm from the line			210/43 7°	230/45 1°	220/49 -12°	220/62 -22°	220/59 -28°	230/60 -33°	220/55 -45°
BCE	used from 1443 nm out; 57 nm from the line				220/27 -1°	210/40 -13°	220/54 -21°	220/64 -30°	220/64 -34°	220/52 -44°
ELY	used from 1592 nm out; 62 nm from the line			200/39 3°	210/27 -2°	210/45 -15°	220/56 -24°	210/60 -28°	210/63 -34°	220/61 -43°
BIH	used from 1692 nm out; 95 nm from the line		L/V	240/7 1°	190/13 -3°	200/26 -16°	210/43 -26°	220/54 -28°	220/51 -35°	220/47 -43°
FAT	used from 1841 nm out; 68 nm from the line	130/16	160/20 5°	190/28 -1°	210/25 -5°	220/27 -15°	230/21 -26°	220/42 -29°	220/44 -35°	220/44 -44°
SAC	used from 1891 nm out; 54 nm from the line	110/6	L/V 4°	010/11 -2°	350/11 -7°	340/24 -16°	360/44 -23°	330/24 -30°	270/21 -35°	230/23 -43°
SFO	used from 1941 nm out; 25 nm from the line	120/13	090/14 5°	040/14 -1°	350/17 -5°	360/42 -14°	360/64 -23°	350/38 -32°	300/19 -37°	250/18 -44°

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
CLT Charlotte, NC	departure	VFR Sky: a few clouds at 5,500 feet	from the southwest (230°) at 8 knots	10+ mi	none	747 ft	9:52 pm EDT (01:52 UTC)
TYS Knoxville, TN	149 nm out, 7 nm southwest of the line, tower	marginal VFR Sky: a broken layer at 1,300 feet, overcast at 2,700 feet	from the west-southwest (250°) at 12 knots	10+ mi	1,300 ft	986 ft	01:53 UTC
PAH Paducah, KY	398 nm out, 14 nm northeast of the line, tower	VFR	calm	10+ mi	none	410 ft	00:00 UTC
CGI Cape Girardeau, MO	438 nm out, 16 nm northeast of the line, tower	VFR	from the west-southwest (240°) at 6 knots	10+ mi	none	341 ft	20:53 UTC
BEC Wichita, KS	796 nm out, 15 nm south of the line, tower	VFR	from the south (170°) at 12 knots	10+ mi	none	1,408 ft	02:15 UTC
HUT Hutchinson, KS	836 nm out, 6 nm northeast of the line, tower	VFR	from the south (170°) at 14 knots	10+ mi	none	1,542 ft	01:52 UTC
PUB Pueblo, CO	1145 nm out, 7 nm south of the line, tower	VFR Sky: scattered clouds at 11,000 feet	from the west-southwest (250°) at 25 knots, gusting to 37	10+ mi	none	4,729 ft	01:53 UTC
MTJ Montrose, CO	1304 nm out, 3 nm north of the line	VFR Sky: scattered clouds at 11,000 feet	from the southwest (230°) at 8 knots	10+ mi	none	5,758 ft	01:53 UTC
HVE Hanksville, UT	1433 nm out, 4 nm southwest of the line	VFR Sky: a broken layer at 6,500 feet	from the southeast (130°) at 11 knots, gusting to 14	10+ mi	6,500 ft	4,453 ft	02:10 UTC
TPH Tonopah, NV	1742 nm out, 6 nm southeast of the line	VFR	from the south (180°) at 18 knots, gusting to 26	10+ mi	none	5,430 ft	01:56 UTC
LVK Livermore, CA	1961 nm out, 3 nm west of the line, tower	VFR	from the west (280°) at 11 knots	10+ mi	none	399 ft	01:53 UTC
SFO San Francisco, CA	destination	VFR Sky: a few clouds at 2,000 feet	from the west-southwest (250°) at 9 knots	10+ mi	none	13 ft	6:56 pm PDT (01:56 UTC)

The highest airport on this list sits at 5,758 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At SFO when you get there the forecast at the estimated arrival, 2:15 pm PDT (21:15 UTC)

Wind from the east-northeast at 5 knots, visibility more than 6 miles, clear skies VFR

The whole forecast for SFO

From Sun 5:00 pm PDT (00:00 UTC): wind from the west-southwest at 16 knots, visibility more than 6 miles, a few clouds at 2,000 feet
From Sun 7:00 pm PDT (02:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, a few clouds at 2,000 feet
From Mon 1:00 am PDT (08:00 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 east-northeast at 5 knots, visibility more than 6 miles, clear skies
From Mon 3:00 pm PDT (22:00 UTC): wind from the west at 10 knots, visibility more than 6 miles, clear skies

The forecast for CLT, the departure

From Sun 10:00 pm EDT (02:00 UTC): wind from the southwest at 8 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the northwest at 8 knots, visibility more than 6 miles, clear skies
From Mon 3:00 pm EDT (19:00 UTC): wind from the north-northwest at 10 knots, gusting to 17, visibility more than 6 miles, a few clouds at 23,000 feet
From Mon 8:00 pm EDT (00:00 UTC): wind from the north at 4 knots, visibility more than 6 miles, a few clouds at 25,000 feet

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

6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 5 nm from the route, 289 nm along the route · security · until 1 August · ZME
6/7094 45NM NE MERCED, CA, Sunday, October 4, 2026 through Tuesday, October 20, 2026 UTC 12 nm from the route, 1861 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 20 October · ZOA
6/7231 Santa Clara, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 UTC 15 nm from the route, at the destination end · drones kept away from a public gathering · until 12 October · ZOA

Daylight

Sunset at CLT 6:52 pm EDT (22:52 UTC), at SFO 6:36 pm PDT (01:36 UTC) (civil twilight ends 7:02 pm PDT (02:02 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 Southeast · loop National Weather Service

Radar now, the lower Mississippi valley · 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: Charlotte/Douglas International, San Francisco International.