The U.S. aircraft register, updated daily
Plan a flight · Sun 8:37 pm EDT (00:37 UTC)

Philadelphia International to San Francisco International PHL → SFO

2,186 nautical miles (2,515 statute miles) west on a straight line, true course 282°, about 294° magnetic at the departure end (variation 12W). At 120 knots that is 19 h 21 min at the quickest height in today's winds (4,500 ft, a 7-knot headwind), arriving about 12:58 pm PDT (19:58 UTC). 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: 4,049 flights in the DOT's last twelve reported months, the route's page.

The return flight

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 E16E: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 25 knots, until 9:55 pm EDT (01:55 UTC). Over the first 70 nm of the route.
    as issued
    WSUS31 KKCI 112355
    MKCE WST 112355
    CONVECTIVE SIGMET 16E
    VALID UNTIL 0155Z
    NY NJ PA DE MD VA DC WV AND NJ NY CSTL WTRS
    FROM SAX-30SE JFK-10N DCA-60ENE EKN-SAX
    AREA EMBD TS MOV FROM 22025KT. TOPS TO FL320.
  • SIGMET E17E: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the west at 15 knots, until 9:55 pm EDT (01:55 UTC). Near the route, 259 nm along the route.
    as issued
    WSUS31 KKCI 112355
    MKCE WST 112355
    CONVECTIVE SIGMET 17E
    VALID UNTIL 0155Z
    PA MD VA NC WV OH KY
    FROM 30WSW EWC-20E RIC-70NNE ILM-70W BKW-10ESE APE-30WSW EWC
    AREA TS MOV FROM 28015KT. TOPS TO FL310.
  • SIGMET W68W: thunderstorms (a convective SIGMET) up to 36,000 ft, moving from the southwest at 40 knots, until 9:55 pm EDT (01:55 UTC). Over the route from 1497 to 1517 nm out.
    as issued
    WSUS33 KKCI 112355
    MKCW WST 112355
    CONVECTIVE SIGMET 68W
    VALID UNTIL 0155Z
    CO NM AZ UT
    FROM 30W CHE-20NNW TBE-60SE ABQ-40N SJN-30SW MTU-30W CHE
    AREA TS MOV FROM 23040KT. TOPS TO FL360.
  • SIGMET W71W: thunderstorms (a convective SIGMET) up to 27,000 ft, moving from the south at 40 knots, until 9:55 pm EDT (01:55 UTC). Over the route from 1627 to 1727 nm out.
    as issued
    WSUS33 KKCI 112355
    MKCW WST 112355
    CONVECTIVE SIGMET 71W
    VALID UNTIL 0155Z
    WY UT ID
    FROM 40S DBS-40WNW BPI-30WSW MTU-30SSW DTA-30SE TWF-40S DBS
    AREA EMBD TS MOV FROM 20040KT. TOPS TO FL270.
  • SIGMET W72W: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the southwest at 20 knots, until 9:55 pm EDT (01:55 UTC). Over the route from 1906 to 1976 nm out.
    as issued
    WSUS33 KKCI 112355
    MKCW WST 112355
    CONVECTIVE SIGMET 72W
    VALID UNTIL 0155Z
    NV
    FROM 60SSW BAM-60W ELY-OAL-40WNW OAL-60SSW BAM
    AREA TS MOV FROM 23020KT. TOPS TO FL300.
  • 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 190 nm of the route.
  • AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 140 nm of the route.
  • AIRMET TANGO 2W: 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 30 to 160 nm out.
  • AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the route from 50 to 240 nm out.
  • AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 90 to 240 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 289 to 419 nm out.
  • AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 1228 to 1886 nm out.
  • AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 1337 to 1757 nm out.
  • AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1407 to 1876 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 1427 to 1687 nm out.
  • AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 1497 to 1537 nm out.
  • AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 1567 to 1946 nm out.
  • AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the route from 1896 to 2066 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 PHL.

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

  • urgent BCS3 at 5,400 ft, 20 nm north, 7:35 pm EDT (23:35 UTC): remarks: wind shear 10 knots gain 1000 above ground on final. 1667 nm along the route, 20 nm north of the line.
    as filed, and in English
    PVU UUA /OV PVU310001/TM 2335/FL054/TP BCS3/RM WIND SHEAR 10 KT GAIN 1000 AGL ON FINAL
    Report
    an urgent report filed through PVU
    Where
    1 nm northwest (310°) of PVU
    Time
    23:35 UTC
    Height
    at 5,400 ft
    Aircraft
    BCS3
    Remarks
    wind shear 10 knots gain 1000 above ground on final
  • B38M at 25,000 ft, 15 nm northeast, 6:25 pm EDT (22:25 UTC): moderate turbulence. At the departure end, 15 nm northeast of the line.
    as filed, and in English
    TEB UA /OV 3958N 07457W/TM 2225/FL250/TP B38M/TB MOD
    Report
    a routine report filed through TEB
    Where
    3958N 07457W
    Time
    22:25 UTC
    Height
    at 25,000 ft
    Aircraft
    B38M
    Turbulence
    moderate
  • C25B at 25,000 ft, 38 nm north, 5:47 pm EDT (21:47 UTC): moderate rime icing, 0 °C. 140 nm along the route, 38 nm north of the line.
    as filed, and in English
    PSB UA /OV PSB/TM 2147/FL250/TP C25B/TA 0/IC MOD RIME
    Report
    a routine report filed through PSB
    Where
    over PSB
    Time
    21:47 UTC
    Height
    at 25,000 ft
    Aircraft
    C25B
    Temperature
    0 °C
    Icing
    moderate rime
  • A321 at 30,000 ft, 29 nm south, 7:49 pm EDT (23:49 UTC): moderate turbulence above 30,000 ft, remarks: zob. 190 nm along the route, 29 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
  • UAL1340 at 40,000 ft, 21 nm south, 8:18 pm EDT (00:18 UTC): moderate chop turbulence, wind 244° at 70 knots. 1168 nm along the route, 21 nm south of the line.
    as filed, and in English
    ARP UAL1340 4046N 10049W 0018 F400 244/070KT TB OCNL MOD CHOP IC
    Report
    a routine report filed through ARP
  • UAL2199 at 35,000 ft, 47 nm south, 7:31 pm EDT (23:31 UTC): moderate chop turbulence, wind 247° at 79 knots. 1297 nm along the route, 47 nm south of the line.
    as filed, and in English
    ARP UAL2199 4007N 10337W 2331 F350 247/079KT TB MOD CHOP IC
    Report
    a routine report filed through ARP
  • A21N at 32,000 ft, 37 nm south, 7:42 pm EDT (23:42 UTC): moderate chop turbulence, remarks: ZDVWC-61. 1307 nm along the route, 37 nm south of the line.
    as filed, and in English
    AKO UA /OV AKO270030/TM 2342/FL320/TP A21N/TB INTMT MOD CHOP/RM ZDVWC-61
    Report
    a routine report filed through AKO
    Where
    30 nm west (270°) of AKO
    Time
    23:42 UTC
    Height
    at 32,000 ft
    Aircraft
    A21N
    Turbulence
    intermittent moderate chop
    Remarks
    ZDVWC-61
  • BCS3 at 24,000 ft, 18 nm south, 7:28 pm EDT (23:28 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the descent. 1367 nm along the route, 18 nm south of the line.
    as filed, and in English
    DEN UA /OV DEN320045/TM 2328/FL240/TP BCS3/TB MOD 240-220/RM DURD
    Report
    a routine report filed through DEN
    Where
    45 nm northwest (320°) of DEN
    Time
    23:28 UTC
    Height
    at 24,000 ft
    Aircraft
    BCS3
    Turbulence
    moderate from 24,000 ft to 22,000 ft
    Remarks
    during the descent
  • A319 at 22,000 ft, 6 nm southeast, 5:42 pm EDT (21:42 UTC): moderate chop turbulence, remarks: ZDVWC-13. 1387 nm along the route, 6 nm southeast of the line.
    as filed, and in English
    BJC UA /OV BJC322047/TM 2142/FL220/TP A319/TB MOD CHOP/RM ZDVWC-13
    Report
    a routine report filed through BJC
    Where
    47 nm northwest (322°) of BJC
    Time
    21:42 UTC
    Height
    at 22,000 ft
    Aircraft
    A319
    Turbulence
    moderate chop
    Remarks
    ZDVWC-13
  • B39M at 32,000 ft, 19 nm southeast, 7:58 pm EDT (23:58 UTC): moderate chop turbulence, no icing, remarks: moderate mtw a 30-knot loss of airspeed ZDVWC-14. 1427 nm along the route, 19 nm southeast of the line.
    as filed, and in English
    EEO UA /OV EKR069073/TM 2358/FL320/TP B39M/TB OCNL MOD CHOP/IC NEG/RM MOD MTW +/-30KT ZDVWC-14
    Report
    a routine report filed through EEO
    Where
    73 nm east (069°) of EKR
    Time
    23:58 UTC
    Height
    at 32,000 ft
    Aircraft
    B39M
    Turbulence
    occasional moderate chop
    Icing
    none
    Remarks
    moderate mtw a 30-knot loss of airspeed ZDVWC-14
  • A21N at 33,000 ft, 4 nm east, 6:35 pm EDT (22:35 UTC): moderate turbulence, remarks: mountain wave +25-30KTS. 1467 nm along the route, 4 nm east of the line.
    as filed, and in English
    HDN UA /OV CHE/TM 2235/FL330/TP A21N/TB MOD/RM MTN WAVE +25-30KTS
    Report
    a routine report filed through HDN
    Where
    over CHE
    Time
    22:35 UTC
    Height
    at 33,000 ft
    Aircraft
    A21N
    Turbulence
    moderate
    Remarks
    mountain wave +25-30KTS
  • PA44 at 6,000 ft, 21 nm north, 7:25 pm EDT (23:25 UTC): moderate turbulence, remarks: runway in sight at at 6,400 ft. 1667 nm along the route, 21 nm north of the line.
    as filed, and in English
    PVU UA /OV PVU310002/TM 2325/FL060/TP PA44/TB MOD /RM RWY IN SIGHT AT 064
    Report
    a routine report filed through PVU
    Where
    2 nm northwest (310°) of PVU
    Time
    23:25 UTC
    Height
    at 6,000 ft
    Aircraft
    PA44
    Turbulence
    moderate
    Remarks
    runway in sight at at 6,400 ft
  • A321 climbing, 0 nm northwest, 8:20 pm EDT (00:20 UTC): light chop turbulence, sandstorm. At the departure end, 0 nm northwest of the line.
    as filed, and in English
    PHL UA /OV E NE PHL/TM 0020/FLDURC/TP A321/WV LOSS 15KT AT 015 /TB LGT CHOP
    Report
    a routine report filed through PHL
    Where
    east northeast phl
    Time
    00:20 UTC
    Height
    during the climb
    Aircraft
    A321
    Wind
    loss 15 knots at at 1,500 ft
    Turbulence
    light chop
  • BCS3 at 1,800 ft, 40 nm southeast, 8:00 pm EDT (00:00 UTC): remarks: tops 1,800 ft during the climb. At the departure end, 40 nm southeast of the line.
    as filed, and in English
    ACY UA /OV ACY/TM 0000/FL018/TP BCS3/RM TOPS 018 DURC
    Report
    a routine report filed through ACY
    Where
    over ACY
    Time
    00:00 UTC
    Height
    at 1,800 ft
    Aircraft
    BCS3
    Remarks
    tops 1,800 ft during the climb

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 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 22 forecast points nearest it (ACY, PSB, AGC, CLE, CMH, FWA, JOT, BRL, DSM, OMA, GRI, GLD, BFF, DEN, GJT, SLC, ELY, BAM, BIH, RNO, SAC, SFO). A plus sign is a headwind, a minus sign a tailwind.

HeightAverage windHead- or tailwindTemperatureGround speedTime en routeArrival
4,500 ft230° at 9 kt+7 kt17 °C113 kt19 h 21 min12:58 pm PDT (19:58 UTC)
6,500 ft250° at 10 kt+10 kt14 °C110 kt19 h 52 min1:29 pm PDT (20:29 UTC)
8,500 ft230° at 15 kt+13 kt10 °C107 kt20 h 26 min2:03 pm PDT (21:03 UTC)
10,500 ft230° at 16 kt+15 kt6 °C105 kt20 h 49 min2:26 pm PDT (21:26 UTC)
12,500 ft240° at 18 kt+17 kt2 °C103 kt21 h 13 min2:50 pm PDT (21:50 UTC)
14,500 ft240° at 20 kt+19 kt-2 °C101 kt21 h 39 min3:16 pm PDT (22:16 UTC)
16,500 ft240° at 22 kt+21 kt-7 °C99 kt22 h 05 min3:42 pm PDT (22:42 UTC)
18,000 ft FL180240° at 24 kt+23 kt-10 °C97 kt22 h 32 min4:09 pm PDT (23:09 UTC)
24,000 ft FL240240° at 28 kt+26 kt-21 °C94 kt23 h 15 min4:52 pm PDT (23:52 UTC)
30,000 ft FL300240° at 39 kt+38 kt-32 °C82 kt26 h 40 min8:17 pm PDT (03:17 UTC)
34,000 ft FL340250° at 46 kt+45 kt-39 °C75 kt29 h 09 min10:46 pm PDT (05:46 UTC)
39,000 ft FL390260° at 49 kt+50 kt-48 °C70 kt31 h 14 min12:51 am PDT (07:51 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
PointFrom3,0006,0009,00012,00018,00024,00030,00034,00039,000
ACYused from 0 nm out; 63 nm from the line230/15230/22 15°230/31 11°230/27 6°230/40 -7°230/51 -17°230/71 -31°230/81 -41°230/86 -53°
PSBused from 50 nm out; 73 nm from the line260/13 13°220/12 8°220/11 4°230/27 -11°210/31 -21°220/73 -32°220/75 -40°230/66 -50°
AGCused from 150 nm out; 44 nm from the line140/12350/10 12°L/V 9°L/V 3°200/11 -11°220/21 -22°220/47 -33°230/51 -39°230/45 -48°
CLEused from 250 nm out; 55 nm from the line340/5320/13 14°300/12 8°310/10 2°310/14 -10°340/14 -23°320/27 -35°260/28 -40°250/36 -48°
CMHused from 349 nm out; 57 nm from the line340/14320/13 12°350/12 8°360/10 2°350/27 -10°340/20 -22°320/31 -35°270/25 -39°260/32 -48°
FWAused from 399 nm out; 36 nm from the line350/9350/24 15°360/25 9°360/29 4°350/31 -10°340/39 -22°330/40 -37°320/38 -43°320/48 -48°
JOTused from 549 nm out; 29 nm from the line230/11290/12 16°300/19 10°320/19 4°300/17 -9°330/31 -20°320/49 -37°320/53 -45°320/67 -49°
BRLused from 649 nm out; 63 nm from the line200/20250/21 16°240/22 10°260/20 5°270/16 -7°290/22 -18°320/41 -34°320/56 -43°310/68 -53°
DSMused from 798 nm out; 23 nm from the line200/32240/27 17°260/19 10°260/16 5°260/19 -7°240/22 -19°270/20 -32°270/38 -42°290/58 -53°
OMAused from 898 nm out; 20 nm from the line190/34230/34 19°250/25 12°250/18 6°250/22 -7°250/28 -19°260/34 -32°260/39 -41°280/56 -51°
GRIused from 998 nm out; 34 nm from the line210/31 19°240/21 14°240/17 6°260/27 -7°260/34 -18°240/45 -32°250/56 -40°260/62 -51°
GLDused from 1148 nm out; 109 nm from the line190/29200/30 15°240/23 8°250/39 -7°230/39 -19°230/57 -31°240/67 -39°250/62 -49°
BFFused from 1198 nm out; 86 nm from the line120/24180/31 13°210/26 7°230/25 -7°240/41 -20°230/52 -36°250/56 -41°260/57 -45°
DENused from 1297 nm out; 62 nm from the line190/31 16°210/32 7°240/41 -8°230/47 -21°240/56 -32°250/65 -37°250/61 -47°
GJTused from 1447 nm out; 95 nm from the line210/40 11°210/46 3°210/61 -10°210/68 -22°220/57 -29°230/59 -36°240/66 -46°
SLCused from 1597 nm out; 73 nm from the line280/8210/39 5°210/52 -1°200/50 -11°200/56 -23°220/61 -28°230/73 -37°230/73 -45°
ELYused from 1747 nm out; 46 nm from the line210/20 4°240/21 -1°230/37 -13°200/58 -25°220/73 -27°220/73 -36°220/69 -44°
BAMused from 1896 nm out; 102 nm from the line270/8 4°230/27 -4°220/49 -18°210/52 -26°220/77 -29°220/71 -33°220/63 -43°
BIHused from 1946 nm out; 80 nm from the lineL/V210/14 6°210/20 -2°230/26 -14°220/32 -24°220/63 -27°220/56 -35°230/50 -44°
RNOused from 1996 nm out; 71 nm from the line320/7260/13 1°230/21 -7°210/38 -17°220/43 -26°230/54 -29°230/59 -32°230/54 -41°
SACused from 2046 nm out; 70 nm from the line270/5L/V 5°L/V -1°240/11 -5°250/22 -15°270/25 -24°260/31 -27°240/39 -33°240/39 -42°
SFOused from 2146 nm out; 20 nm from the line220/11L/V 5°280/7 1°270/15 -3°290/23 -14°310/29 -24°280/26 -28°250/30 -34°250/36 -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

AirportWhereConditionsWindVisibilityCeilingElevationReported
PHL Philadelphia, PA departure no report just now 35 ft
LNS Lancaster, PA 50 nm out, 5 nm north of the line, tower no report just now 402 ft
MFD Mansfield, OH 339 nm out, 2 nm east of the line, tower no report just now 1,297 ft
FWA Fort Wayne, IN 459 nm out, 4 nm south of the line, tower no report just now 814 ft
MLI Moline, IL 699 nm out, 9 nm north of the line, tower no report just now 589 ft
OMA Omaha, NE 948 nm out, 5 nm east of the line, tower no report just now 984 ft
LBF North Platte, NE 1158 nm out, 2 nm west of the line no report just now 2,777 ft
FNL Fort Collins/Loveland, CO 1357 nm out, 19 nm south of the line, tower no report just now 5,020 ft
PVU Provo, UT 1667 nm out, 19 nm north of the line, tower no report just now 4,496 ft
ELY Ely, NV 1816 nm out, 3 nm south of the line no report just now 6,259 ft
SCK Stockton, CA 2126 nm out, 4 nm southwest of the line, tower no report just now 32 ft
SFO San Francisco, CA destination no report just now 13 ft

The highest airport on this list sits at 6,259 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, 12:58 pm PDT (19:58 UTC)

SFO has no terminal forecast; use the nearest airport that does.

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 20 nm from the route, 259 nm along the route · a VIP movement · today · ZOB
  • 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 1 nm from the route, 259 nm along the route · a VIP movement · today · ZOB
  • 6/7231 Santa Clara, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 UTC 18 nm from the route, at the destination end · drones kept away from a public gathering · until 12 October · ZOA
  • 6/7455 SAN FRANCISCO, CA, Thursday, October 8, 2026 through Sunday, October 11, 2026 Local 10 nm from the route, at the destination end · security · ended 11 October · ZOA

Daylight

Sunset at PHL 6:26 pm EDT (22:26 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 Northeast
Radar now, the Northeast · loop National Weather Service
Radar now, the central Great Lakes
Radar now, the central Great Lakes · loop National Weather Service
Radar now, the upper Mississippi valley
Radar now, the upper Mississippi valley · loop National Weather Service
Radar, the whole country
Radar, the whole country · loop National Weather Service
Surface analysis now
Surface analysis now Weather Prediction Center
Forecast chart, 12 hours ahead
Forecast chart, 12 hours ahead Weather Prediction Center
Forecast chart, 24 hours ahead
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: Philadelphia International, San Francisco International.