Plan a flight · Sun 10:18 pm PDT (05:18 UTC)

San Francisco International to Ronald Reagan Washington Ntl Airport SFO → DCA

2,117 nautical miles (2,436 statute miles) east on a straight line, true course 074°, about 060° magnetic at the departure end (variation 14E). At 120 knots that is 12 h 45 min at the quickest height in today's winds (34,000 ft, a 46-knot tailwind), arriving about 2:03 pm EDT (18:03 UTC). Right now SFO is VFR, wind from the south (190°) at 5 knots; DCA is IFR, wind from the north (350°) at 7 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: 2,157 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 W14W: thunderstorms (a convective SIGMET) up to 28,000 ft, moving from the southwest at 20 knots, until 11:55 pm PDT (06:55 UTC). Over the route from 200 to 310 nm out.
as issued
```
WSUS33 KKCI 120455
MKCW WST 120455
CONVECTIVE SIGMET 14W
VALID UNTIL 0655Z
NV
FROM 40NW BVL-20WNW ELY-20SSE OAL-40WNW OAL-50NE BAM-40NW BVL
AREA TS MOV FROM 24020KT. TOPS TO FL280.
```

SIGMET E19E: thunderstorms (a convective SIGMET) up to 43,000 ft, moving from the southwest at 20 knots, until 11:55 pm PDT (06:55 UTC). Over the last 130 nm of the route.

as issued

WSUS31 KKCI 120455
MKCE WST 120455
CONVECTIVE SIGMET 19E
VALID UNTIL 0655Z
CT NY NJ PA DE MD VA DC WV AND DE NJ NY MD CT VA CSTL WTRS
FROM 20NNW HTO-70SSE HTO-90SE SIE-20WNW LYH-40ESE AIR-20NNW HTO
AREA EMBD TS MOV FROM 24020KT. TOPS TO FL430.

AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 100 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 250 to 719 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 260 to 639 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 320 to 899 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 509 to 939 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 639 to 809 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 919 to 1448 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 469 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1917 to 2067 nm out.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 90 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 SFO.

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

urgent B737 at 7,600 ft, 25 nm north, 8:22 pm PDT (03:22 UTC): remarks: low-level wind shear 45 knots crosswind on final. 729 nm along the route, 25 nm north of the line.
as filed, and in English
```
HDN UUA /OV HDN/TM 0322/FL076/TP B737/RM LLWS 45 KTS CROSSWIND ON FINAL
```
Report
an urgent report filed through HDN
Where
over HDN
Time
03:22 UTC
Height
at 7,600 ft
Aircraft
B737
Remarks
low-level wind shear 45 knots crosswind on final
PC12 at 17,000 ft, 34 nm south, 9:52 pm PDT (04:52 UTC): moderate turbulence, moderate rime icing, -15 °C, remarks: entered by zoa fdcs. 220 nm along the route, 34 nm south of the line.
as filed, and in English
```
TPH UA /OV OAL/TM 0452/FL 170/TP PC12/TA M15/TB MOD/IC MOD RIME/RM ENTERED BY ZOA FDCS AWC-WEB
```
Report
a routine report filed through TPH
Where
over OAL
Time
04:52 UTC
Height
at 17,000 ft
Aircraft
PC12
Temperature
−15 °C
Turbulence
moderate
Icing
moderate rime
Remarks
entered by zoa fdcs
B738 at 23,000 ft, 16 nm south, 7:34 pm PDT (02:34 UTC): moderate turbulence, remarks: during the climb ZDVWC-05. 809 nm along the route, 16 nm south of the line.
as filed, and in English
```
DEN UA /OV DVV270030/TM 0234/FL230/TP B738/TB MOD /RM DURC ZDVWC-05
```
Report
a routine report filed through DEN
Where
30 nm west (270°) of DVV
Time
02:34 UTC
Height
at 23,000 ft
Aircraft
B738
Turbulence
moderate
Remarks
during the climb ZDVWC-05
B38M at 20,000 ft, 4 nm north, 8:11 pm PDT (03:11 UTC): moderate clear-air turbulence from 20,000 ft to 25,000 ft. At the destination end, 4 nm north of the line.
as filed, and in English
```
IAD UA /OV AML300020/TM 0311/FL200/TP B38M/TB MOD CAT 200-250
```
Report
a routine report filed through IAD
Where
20 nm northwest (300°) of AML
Time
03:11 UTC
Height
at 20,000 ft
Aircraft
B38M
Turbulence
moderate clear-air turbulence from 20,000 ft to 25,000 ft
GLF6 at 45,000 ft, 5 nm south, 7:24 pm PDT (02:24 UTC): light chop turbulence, remarks: ZDVWC-03. 559 nm along the route, 5 nm south of the line.
as filed, and in English
```
PUC UA /OV PUC1130028/TM 0224/FL450/TP GLF6/TB CONS LGT CHOP/RM ZDVWC-03
```
Report
a routine report filed through PUC
Where
28 nm southeast (130°) of PUC1
Time
02:24 UTC
Height
at 45,000 ft
Aircraft
GLF6
Turbulence
continuous light chop
Remarks
ZDVWC-03
UAL2479 at 36,000 ft, 49 nm south, 8:11 pm PDT (03:11 UTC): no turbulence, wind 231° at 49 knots. 689 nm along the route, 49 nm south of the line.
as filed, and in English
```
ARP UAL2479 3910N 10753W 0311 F360 231/049KT TB SMTH IC
```
Report
a routine report filed through ARP
BE20 at 16,000 ft, 29 nm south, 8:28 pm PDT (03:28 UTC): light chop turbulence, light rime icing, -3 °C, remarks: ZDVWC-11. 699 nm along the route, 29 nm south of the line.
as filed, and in English
```
RIL UA /OV RIL/TM 0328/FL160/TP BE20/TA M03/TB LGT CHOP/IC LGT RIME/RM ZDVWC-11
```
Report
a routine report filed through RIL
Where
over RIL
Time
03:28 UTC
Height
at 16,000 ft
Aircraft
BE20
Temperature
−3 °C
Turbulence
light chop
Icing
light rime
Remarks
ZDVWC-11
CL35 at 41,000 ft, 7 nm south, 7:40 pm PDT (02:40 UTC): remarks: mtw +/-50FT a 15-knot loss of airspeed ZDVWC-05. 759 nm along the route, 7 nm south of the line.
as filed, and in English
```
EGE UA /OV RLG/TM 0240/FL410/TP CL35/RM MTW +/-50FT +/-15KT ZDVWC-05
```
Report
a routine report filed through EGE
Where
over RLG
Time
02:40 UTC
Height
at 41,000 ft
Aircraft
CL35
Remarks
mtw +/-50FT a 15-knot loss of airspeed ZDVWC-05
B38M at 21,500 ft, 22 nm north, 9:33 pm PDT (04:33 UTC): light turbulence up to 25,000 ft, remarks: during the descent flati star ZDVWC-13. 799 nm along the route, 22 nm north of the line.
as filed, and in English
```
DEN UA /OV DEN305065/TM 0433/FL215/TP B38M/TB LGT BLO 250/RM DURD FLATI STAR. ZDVWC-13
```
Report
a routine report filed through DEN
Where
65 nm northwest (305°) of DEN
Time
04:33 UTC
Height
at 21,500 ft
Aircraft
B38M
Turbulence
light below 25,000 ft
Remarks
during the descent flati star ZDVWC-13
A320 descending, 27 nm south, 8:19 pm PDT (03:19 UTC): no turbulence up to 10,000 ft. 839 nm along the route, 27 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0319/FLDURD/TP A320/TB NEG BLO 100
```
Report
a routine report filed through DEN
Where
over DEN
Time
03:19 UTC
Height
during the descent
Aircraft
A320
Turbulence
no below 10,000 ft
B737 descending, 27 nm south, 7:29 pm PDT (02:29 UTC): no turbulence up to 10,000 ft. 839 nm along the route, 27 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0229/FLDURD/TP B737/TB NEG BLO 100
```
Report
a routine report filed through DEN
Where
over DEN
Time
02:29 UTC
Height
during the descent
Aircraft
B737
Turbulence
no below 10,000 ft
B38M at 29,000 ft, 22 nm north, 9:52 pm PDT (04:52 UTC): no turbulence from 23,000 ft to 29,000 ft. 1598 nm along the route, 22 nm north of the line.
as filed, and in English
```
TIP UA /OV RBS/TM 0452/FL290/TP B38M/TB NEG 230-290
```
Report
a routine report filed through TIP
Where
over RBS
Time
04:52 UTC
Height
at 29,000 ft
Aircraft
B38M
Turbulence
no from 23,000 ft to 29,000 ft
MD83 climbing, 6 nm north, 10:04 pm PDT (05:04 UTC): a routine report with nothing remarked on. 1838 nm along the route, 6 nm north of the line.
as filed, and in English
```
CMH UA /OV LCK/TM 0504/FLDURC/TP MD83/SK B010 T037
```
Report
a routine report filed through CMH
Where
over LCK
Time
05:04 UTC
Height
during the climb
Aircraft
MD83
Sky
B010 T037
BCS3 climbing, 17 nm north, 7:27 pm PDT (02:27 UTC): a routine report with nothing remarked on. 1838 nm along the route, 17 nm north of the line.
as filed, and in English
```
CMH UA /OV CMH/TM 0227/FLDURC/TP BCS3/SK B010
```
Report
a routine report filed through CMH
Where
over CMH
Time
02:27 UTC
Height
during the climb
Aircraft
BCS3
Sky
B010

1 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 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 19 forecast points nearest it (SFO, SAC, RNO, BIH, ELY, SLC, GJT, DEN, GLD, GRI, OMA, DSM, BRL, SPI, IND, CVG, CMH, EKN, RIC). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
5,500 ft	260° at 16 kt	−17 kt	16 °C	137 kt	15 h 27 min	4:45 pm EDT (20:45 UTC)
7,500 ft	240° at 18 kt	−18 kt	11 °C	138 kt	15 h 20 min	4:38 pm EDT (20:38 UTC)
9,500 ft	250° at 16 kt	−17 kt	7 °C	137 kt	15 h 27 min	4:45 pm EDT (20:45 UTC)
11,500 ft	250° at 16 kt	−17 kt	3 °C	137 kt	15 h 27 min	4:45 pm EDT (20:45 UTC)
13,500 ft	250° at 18 kt	−18 kt	-1 °C	138 kt	15 h 20 min	4:38 pm EDT (20:38 UTC)
15,500 ft	250° at 20 kt	−20 kt	-5 °C	140 kt	15 h 07 min	4:25 pm EDT (20:25 UTC)
17,500 ft	250° at 22 kt	−23 kt	-9 °C	143 kt	14 h 48 min	4:06 pm EDT (20:06 UTC)
18,000 ft FL180	250° at 23 kt	−23 kt	-10 °C	143 kt	14 h 48 min	4:06 pm EDT (20:06 UTC)
24,000 ft FL240	250° at 28 kt	−29 kt	-21 °C	149 kt	14 h 12 min	3:30 pm EDT (19:30 UTC)
30,000 ft FL300	250° at 35 kt	−37 kt	-32 °C	157 kt	13 h 29 min	2:47 pm EDT (18:47 UTC)
34,000 ft FL340	260° at 43 kt	−46 kt	-37 °C	166 kt	12 h 45 min	2:03 pm EDT (18:03 UTC)
39,000 ft FL390	260° at 42 kt	−45 kt	-47 °C	165 kt	12 h 50 min	2:08 pm EDT (18:08 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
SFO	used from 0 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°
SAC	used from 50 nm out; 45 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°
RNO	used from 100 nm out; 79 nm from the line		010/9	320/10 -2°	210/23 -9°	210/34 -19°	220/36 -25°	230/31 -29°	230/41 -33°	230/38 -42°
BIH	used from 150 nm out; 64 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°
ELY	used from 250 nm out; 94 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°
SLC	used from 449 nm out; 85 nm from the line		200/5	230/8 2°	220/20 -2°	210/40 -12°	190/53 -25°	210/62 -30°	220/69 -34°	220/64 -43°
GJT	used from 549 nm out; 95 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°
DEN	used from 749 nm out; 68 nm from the line			240/21 14°	250/44 6°	220/49 -8°	220/49 -21°	230/54 -30°	240/57 -35°	240/49 -45°
GLD	used from 899 nm out; 80 nm from the line		230/49	230/42 15°	220/26 8°	240/18 -7°	230/27 -21°	240/62 -30°	240/61 -35°	250/57 -47°
GRI	used from 1049 nm out; 64 nm from the line		230/35 21°	230/23 13°	220/20 7°	240/25 -8°	240/37 -20°	250/49 -33°	260/57 -38°	260/58 -47°
OMA	used from 1198 nm out; 50 nm from the line	220/47	240/33 19°	250/18 11°	230/17 6°	260/29 -8°	250/33 -19°	250/51 -33°	260/61 -40°	270/62 -49°
DSM	used from 1298 nm out; 65 nm from the line	230/40	250/33 17°	250/18 12°	240/17 5°	260/28 -8°	270/34 -19°	260/41 -33°	260/55 -41°	270/62 -51°
BRL	used from 1398 nm out; 42 nm from the line	230/24	240/29 15°	290/16 10°	280/15 4°	260/23 -7°	260/32 -19°	260/36 -33°	280/48 -41°	280/59 -52°
SPI	used from 1498 nm out; 29 nm from the line	220/21	250/23 16°	260/27 9°	270/14 6°	270/23 -7°	270/31 -19°	270/28 -33°	290/48 -42°	300/55 -52°
IND	used from 1598 nm out; 65 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°
CVG	used from 1748 nm out; 52 nm from the line	320/18	350/32 16°	350/35 10°	350/30 3°	330/30 -7°	340/44 -20°	340/58 -35°	330/72 -41°	320/36 -49°
CMH	used from 1798 nm out; 23 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°
EKN	used from 1897 nm out; 70 nm from the line		330/21 12°	330/25 7°	350/22 2°	330/24 -10°	310/27 -21°	320/33 -35°	290/31 -39°	290/34 -47°
RIC	used from 2097 nm out; 83 nm from the line	270/23	280/19 11°	270/18 8°	240/22 4°	230/39 -7°	220/55 -18°	220/75 -30°	230/83 -39°	230/64 -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
SFO San Francisco, CA	departure	VFR Sky: a few clouds at 2,000 feet	from the south (190°) at 5 knots	10+ mi	none	13 ft	9:56 pm PDT (04:56 UTC)
SCK Stockton, CA	60 nm out, 4 nm west of the line, tower	VFR Sky: a few clouds at 8,500 feet	from the west (270°) at 10 knots	10+ mi	none	32 ft	04:55 UTC
ELY Ely, NV	370 nm out, 12 nm north of the line	VFR Sky: a broken layer at 4,300 feet, a broken layer at 5,000 feet, overcast at 6,500 feet	from the south-southeast (160°) at 12 knots, gusting to 21	10+ mi	4,300 ft	6,259 ft	04:53 UTC
PUC Price, UT	559 nm out, 4 nm south of the line	marginal VFR Sky: overcast at 2,900 feet Weather: rain	from the south (190°) at 6 knots	8 mi	2,900 ft	5,957 ft	04:53 UTC
FNL Fort Collins/Loveland, CO	829 nm out, 13 nm north of the line, tower	VFR	from the north-northwest (340°) at 3 knots	10+ mi	none	5,020 ft	04:56 UTC
FMM Fort Morgan, CO	879 nm out, 2 nm northeast of the line	VFR	from the south (190°) at 11 knots	10+ mi	none	4,595 ft	04:55 UTC
LNK Lincoln, NE	1198 nm out, 19 nm north of the line, tower	VFR	from the south (180°) at 11 knots	10+ mi	none	1,218 ft	04:54 UTC
EOK Keokuk, IA	1448 nm out, 3 nm northwest of the line	reported, no category	from the south (180°) at 5 knots	10+ mi	none	671 ft	04:55 UTC
CMI Champaign/Urbana, IL	1588 nm out, 12 nm south of the line, tower	VFR	from the south (180°) at 4 knots	10+ mi	none	754 ft	04:53 UTC
DAY Dayton, OH	1778 nm out, 2 nm north of the line, tower	marginal VFR Sky: overcast at 1,400 feet	from the west (280°) at 4 knots	10+ mi	1,400 ft	1,009 ft	04:56 UTC
IAD Washington, DC	2097 nm out, 1 nm north of the line, tower	IFR Sky: overcast at 600 feet Weather: light rain, mist	from the north-northwest (340°) at 12 knots	4 mi	600 ft	312 ft	04:52 UTC
DCA Washington, DC	destination	IFR Sky: overcast at 900 feet	from the north (350°) at 7 knots	7 mi	900 ft	14 ft	12:58 am EDT (04:58 UTC)

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 DCA when you get there the forecast at the estimated arrival, 2:03 pm EDT (18:03 UTC)

Wind from the north-northwest at 10 knots, gusting to 17, visibility more than 6 miles, a broken layer at 3,500 feet VFR

The whole forecast for DCA

From Sun 11:00 pm EDT (03:00 UTC): wind from the north-northeast at 7 knots, visibility 5 miles, light rain showers, mist, overcast at 500 feet
From Mon 1:00 am EDT (05:00 UTC): wind from the north at 7 knots, visibility 4 miles, light rain showers, mist, overcast at 800 feet
From Mon 6:00 am EDT (10:00 UTC): wind from the north-northwest at 10 knots, gusting to 18, visibility more than 6 miles, overcast at 1,200 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the north-northwest at 13 knots, gusting to 22, visibility more than 6 miles, a broken layer at 1,500 feet, overcast at 2,500 feet
From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 10 knots, gusting to 17, visibility more than 6 miles, a broken layer at 3,500 feet
From Mon 7:00 pm EDT (23:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, a few clouds at 5,000 feet, scattered clouds at 25,000 feet

The forecast for SFO, the departure

From Sun 8:00 pm PDT (03:00 UTC): wind from the 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

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

6/7231 Santa Clara, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 UTC 18 nm from the route, at the departure end · drones kept away from a public gathering · until 12 October · ZOA
6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 5 nm from the route, at the destination end · a VIP movement · today · ZDC
4/9383 WASHINGTON, DC., USA on the route, at the destination end · security · ZDC

Daylight

Sunset at SFO 6:36 pm PDT (01:36 UTC), at DCA 6:34 pm EDT (22:34 UTC) (civil twilight ends 7:01 pm EDT (23:01 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 northern Rockies · 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: San Francisco International, Ronald Reagan Washington Ntl Airport.