The U.S. aircraft register, updated daily
Plan a flight · Mon 7:00 am PDT (14:00 UTC)

Spokane International to Washington Dulles International GEG → IAD

1,805 nautical miles (2,077 statute miles) east on a straight line, true course 092°, about 078° magnetic at the departure end (variation 14E). At 120 knots that is 10 h 45 min at the quickest height in today's winds (39,000 ft, a 48-knot tailwind), arriving about 8:45 pm EDT (00:45 UTC), after sunset at the destination. Right now GEG is VFR, wind from the east (100°) at 9 knots; IAD is VFR, wind from the northwest (320°) at 12 knots, gusting to 23. 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: 6 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 C20C: thunderstorms (a convective SIGMET) up to 37,000 ft, moving from the southwest at 40 knots, until 8:55 am PDT (15:55 UTC). Over the route from 708 to 768 nm out.
    as issued
    WSUS32 KKCI 121355
    MKCC WST 121355
    CONVECTIVE SIGMET 20C
    VALID UNTIL 1555Z
    SD ND
    FROM 80W GFK-40WNW FAR-40W ABR-50ENE DPR-30S BIS-80W GFK
    AREA TS MOV FROM 21040KT. TOPS TO FL370.
  • AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the first 449 nm of the route.
  • AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 179 nm of the route.
  • AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 90 to 349 nm out.
  • AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 179 to 977 nm out.
  • AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 459 to 558 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 1526 to 1725 nm out.
  • AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 1635 to 1775 nm out.
  • AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the route from 1715 to 1795 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 GEG.

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

  • E170 at 28,000 ft, 37 nm northeast, 6:10 am PDT (13:10 UTC): moderate chop turbulence. 1376 nm along the route, 37 nm northeast of the line.
    as filed, and in English
    GRR UA /OV VIO/TM 1310/FL280/TP E170/TB OCNL MOD CHOP
    Report
    a routine report filed through GRR
    Where
    over VIO
    Time
    13:10 UTC
    Height
    at 28,000 ft
    Aircraft
    E170
    Turbulence
    occasional moderate chop
  • A320 at 25,000 ft, 7 nm southwest, 6:25 am PDT (13:25 UTC): light to moderate chop turbulence above 25,000 ft, remarks: zse. 80 nm along the route, 7 nm southwest of the line.
    as filed, and in English
    MLP UA /OV MLP/TM 1325/FL250/TP A320/TB CONS LGT OCNL MOD CHOP 250 /RM ZSE
    Report
    a routine report filed through MLP
    Where
    over MLP
    Time
    13:25 UTC
    Height
    at 25,000 ft
    Aircraft
    A320
    Turbulence
    continuous light occasional moderate chop at 25,000 ft
    Remarks
    zse
  • B752 at 41,000 ft, 36 nm south, 5:31 am PDT (12:31 UTC): light to moderate turbulence above 41,000 ft. 229 nm along the route, 36 nm south of the line.
    as filed, and in English
    HLN UA /OV HLN009010/TM 1231/FL410/TP B752/TB CONS LGT OCNL MOD 410/ZLC
    Report
    a routine report filed through HLN
    Where
    10 nm north (009°) of HLN
    Time
    12:31 UTC
    Height
    at 41,000 ft
    Aircraft
    B752
    Turbulence
    continuous light occasional moderate 410/ZLC
  • A319 at 7,500 ft, 8 nm north, 6:41 am PDT (13:41 UTC): overcast from 30,000 ft to 7,500 ft. 249 nm along the route, 8 nm north of the line.
    as filed, and in English
    GTF UA /OV 180010/TM 1341/FL075/TP A319/SK OVC003-TOPS075
    Report
    a routine report filed through GTF
    Where
    wind from 180° at 10 knots
    Time
    13:41 UTC
    Height
    at 7,500 ft
    Aircraft
    A319
    Sky
    overcast from 300 ft, tops 7,500 ft
  • CRJ7 at 29,500 ft, 32 nm north, 5:45 am PDT (12:45 UTC): light chop turbulence. 568 nm along the route, 32 nm north of the line.
    as filed, and in English
    DIK UA /OV DIK270030/TM 1245/FL295/TP CRJ7/SK TOP 295/TB LGT CHOP/ZLC
    Report
    a routine report filed through DIK
    Where
    30 nm west (270°) of DIK
    Time
    12:45 UTC
    Height
    at 29,500 ft
    Aircraft
    CRJ7
    Sky
    top 29,500 ft
    Turbulence
    light chop/zlc
  • C525 at 3,500 ft, 45 nm north, 6:43 am PDT (13:43 UTC): a trace of rime icing, 3 °C, remarks: during the descent. 688 nm along the route, 45 nm north of the line.
    as filed, and in English
    BIS UA /OV BIS/TM 1343/FL035/TP C525/SK BASES 020 TOPS 055/TA 03/IC TR RIME/RM DURD
    Report
    a routine report filed through BIS
    Where
    over BIS
    Time
    13:43 UTC
    Height
    at 3,500 ft
    Aircraft
    C525
    Sky
    bases 2,000 ft tops 5,500 ft
    Temperature
    3 °C
    Icing
    tr rime
    Remarks
    during the descent
  • PA46 at 7,000 ft, 45 nm north, 6:11 am PDT (13:11 UTC): remarks: during the climb. 688 nm along the route, 45 nm north of the line.
    as filed, and in English
    BIS UA /OV BIS/TM 1311/FL070/TP PA46/SK TOPS 062/RM DURC
    Report
    a routine report filed through BIS
    Where
    over BIS
    Time
    13:11 UTC
    Height
    at 7,000 ft
    Aircraft
    PA46
    Sky
    tops 6,200 ft
    Remarks
    during the climb
  • P46T descending, 45 nm north, 5:41 am PDT (12:41 UTC): overcast from 2,000 ft to 5,600 ft. 688 nm along the route, 45 nm north of the line.
    as filed, and in English
    BIS UA /OV KBIS/TM 1241/FLDURD/TP P46T/SK OVC020-TOP056
    Report
    a routine report filed through BIS
    Where
    over KBIS
    Time
    12:41 UTC
    Height
    during the descent
    Aircraft
    P46T
    Sky
    overcast from 2,000 ft, tops 5,600 ft
  • SR22 at 7,000 ft, 16 nm north, 6:37 am PDT (13:37 UTC): no turbulence, no icing, clear from 7,000 ft to 60,000 ft. 698 nm along the route, 16 nm north of the line.
    as filed, and in English
    BIS UA /OV BIS170030/TM 1337/FL070/TP SR22/SK SKC/TB NEG/IC NEG
    Report
    a routine report filed through BIS
    Where
    30 nm south (170°) of BIS
    Time
    13:37 UTC
    Height
    at 7,000 ft
    Aircraft
    SR22
    Sky
    clear
    Turbulence
    none
    Icing
    none
  • A321 at 35,000 ft, 23 nm south, 6:38 am PDT (13:38 UTC): no turbulence. 718 nm along the route, 23 nm south of the line.
    as filed, and in English
    MBG UA /OV MBG/TM 1338/FL350/TP A321/SK TOP310/TB NEG
    Report
    a routine report filed through MBG
    Where
    over MBG
    Time
    13:38 UTC
    Height
    at 35,000 ft
    Aircraft
    A321
    Sky
    TOP310
    Turbulence
    none
  • C441 at 5,000 ft, 9 nm south, 4:52 am PDT (11:52 UTC): no turbulence, no icing, remarks: during the climb. 798 nm along the route, 9 nm south of the line.
    as filed, and in English
    ABR UA /OV ABR/TM 1152/FL050/TP C441/SK BASEUNKN-TOP032/TB NEG/IC NEG/RM DURC
    Report
    a routine report filed through ABR
    Where
    over ABR
    Time
    11:52 UTC
    Height
    at 5,000 ft
    Aircraft
    C441
    Sky
    BASEUNKN-TOP032
    Turbulence
    none
    Icing
    none
    Remarks
    during the climb
  • C25A at 7,500 ft, 19 nm south, 5:31 am PDT (12:31 UTC): no turbulence, no icing, remarks: during the climb. 858 nm along the route, 19 nm south of the line.
    as filed, and in English
    ATY UA /OV ATY/TM 1231/FL075/TP C25A/SK BASEUNKN/TB NEG/IC NEG/RM DURC
    Report
    a routine report filed through ATY
    Where
    over ATY
    Time
    12:31 UTC
    Height
    at 7,500 ft
    Aircraft
    C25A
    Sky
    baseunkn
    Turbulence
    none
    Icing
    none
    Remarks
    during the climb
  • SF50 at 13,000 ft, 23 nm south, 6:36 am PDT (13:36 UTC): no turbulence, no icing, clear from 13,000 ft to 60,000 ft. 947 nm along the route, 23 nm south of the line.
    as filed, and in English
    RWF UA /OV RWF/TM 1336/FL130/TP SF50/SK SKC/TB NEG/IC NEG
    Report
    a routine report filed through RWF
    Where
    over RWF
    Time
    13:36 UTC
    Height
    at 13,000 ft
    Aircraft
    SF50
    Sky
    clear
    Turbulence
    none
    Icing
    none
  • PC12 at 20,000 ft, 21 nm southwest, 6:27 am PDT (13:27 UTC): no turbulence. 1177 nm along the route, 21 nm southwest of the line.
    as filed, and in English
    LNR UA /OV 0WI4/TM 1327/FL200/TP PC12/TB NEG
    Report
    a routine report filed through LNR
    Where
    over 0WI4
    Time
    13:27 UTC
    Height
    at 20,000 ft
    Aircraft
    PC12
    Turbulence
    none

16 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 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 17 forecast points nearest it (GEG, GPI, GTF, BIL, MLS, DIK, ABR, AXN, MSP, LSE, GRB, MKG, FWA, CLE, AGC, EKN, RIC). A plus sign is a headwind, a minus sign a tailwind.

HeightAverage windHead- or tailwindTemperatureGround speedTime en routeArrival
3,500 ft270° at 11 kt−10 kt130 kt13 h 53 min11:53 pm EDT (03:53 UTC)
5,500 ft270° at 8 kt−8 kt1 °C128 kt14 h 06 min12:06 am EDT (04:06 UTC)
7,500 ft260° at 10 kt−10 kt8 °C130 kt13 h 53 min11:53 pm EDT (03:53 UTC)
9,500 ft260° at 12 kt−12 kt5 °C132 kt13 h 40 min11:40 pm EDT (03:40 UTC)
11,500 ft260° at 15 kt−14 kt2 °C134 kt13 h 28 min11:28 pm EDT (03:28 UTC)
13,500 ft260° at 16 kt−16 kt-2 °C136 kt13 h 16 min11:16 pm EDT (03:16 UTC)
15,500 ft260° at 18 kt−18 kt-6 °C138 kt13 h 05 min11:05 pm EDT (03:05 UTC)
17,500 ft270° at 19 kt−20 kt-10 °C140 kt12 h 54 min10:54 pm EDT (02:54 UTC)
18,000 ft FL180270° at 20 kt−20 kt-11 °C140 kt12 h 54 min10:54 pm EDT (02:54 UTC)
24,000 ft FL240260° at 25 kt−25 kt-23 °C145 kt12 h 27 min10:27 pm EDT (02:27 UTC)
30,000 ft FL300260° at 28 kt−28 kt-36 °C148 kt12 h 12 min10:12 pm EDT (02:12 UTC)
34,000 ft FL340260° at 38 kt−39 kt-41 °C159 kt11 h 21 min9:21 pm EDT (01:21 UTC)
39,000 ft FL390270° at 47 kt−48 kt-47 °C168 kt10 h 45 min8:45 pm EDT (00:45 UTC)

Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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
GEGused from 0 nm out; 25 nm from the line060/7 -2°070/12 -6°050/8 -8°120/11 -21°110/18 -33°030/22 -37°040/6 -38°240/7 -41°
GPIused from 50 nm out; 73 nm from the line090/8 -4°140/7 -7°090/10 -8°110/10 -19°210/25 -30°200/24 -40°210/31 -39°210/35 -42°
GTFused from 199 nm out; 27 nm from the lineL/VL/V -7°240/8 -8°240/30 -14°240/40 -28°210/52 -38°210/76 -38°220/72 -43°
BILused from 349 nm out; 75 nm from the line300/14270/19 -2°260/26 -2°220/28 -13°210/51 -25°220/56 -33°220/61 -39°220/72 -45°
MLSused from 399 nm out; 61 nm from the line290/17 -1°250/18 0°230/25 0°220/31 -11°220/32 -24°220/50 -32°220/60 -38°230/71 -46°
DIKused from 548 nm out; 39 nm from the line190/12 5°230/29 7°220/33 1°220/43 -11°210/47 -23°220/53 -33°240/56 -40°250/72 -47°
ABRused from 698 nm out; 75 nm from the line080/12210/12 17°220/22 12°230/26 5°220/28 -10°230/41 -21°250/36 -36°260/47 -39°260/63 -47°
AXNused from 848 nm out; 67 nm from the line110/6260/10 16°240/17 12°250/20 5°260/29 -10°260/35 -22°260/29 -38°270/48 -41°270/61 -48°
MSPused from 947 nm out; 53 nm from the line250/12250/17 17°240/26 12°250/26 5°280/26 -9°280/32 -22°270/37 -38°280/47 -41°280/55 -48°
LSEused from 1047 nm out; 46 nm from the line250/25240/21 17°240/28 11°250/28 5°280/24 -10°280/31 -21°260/35 -37°270/45 -43°280/59 -47°
GRBused from 1197 nm out; 84 nm from the line250/32250/22 17°240/18 8°280/21 6°280/34 -11°280/35 -21°280/39 -37°270/52 -45°290/60 -49°
MKGused from 1247 nm out; 78 nm from the line260/28260/18 15°250/16 9°260/22 4°280/31 -9°270/35 -21°270/44 -35°270/42 -45°290/61 -51°
FWAused from 1396 nm out; 57 nm from the line270/20300/16 15°290/14 10°280/17 3°290/25 -7°280/30 -19°280/34 -35°290/48 -44°300/64 -52°
CLEused from 1496 nm out; 50 nm from the line310/7350/20 14°340/16 9°320/21 2°320/32 -8°330/34 -20°330/45 -36°320/60 -45°320/64 -51°
AGCused from 1596 nm out; 47 nm from the line340/11350/12 11°360/25 7°340/30 2°340/41 -8°340/44 -21°350/59 -36°340/68 -42°340/50 -51°
EKNused from 1695 nm out; 59 nm from the line330/20 10°350/29 7°340/32 2°340/44 -8°350/50 -21°350/63 -35°340/69 -40°330/42 -50°
RICused from 1795 nm out; 90 nm from the line350/34340/27 12°340/36 8°330/31 3°310/32 -9°320/34 -21°300/37 -34°290/37 -39°290/42 -46°

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
GEG Spokane, WA departure VFR Sky: scattered clouds at 3,800 feet, a broken layer at 8,000 feet, a broken layer at 11,000 feet from the east (100°) at 9 knots 10+ mi 8,000 ft 2,385 ft 6:53 am PDT (13:53 UTC)
THM Thompson Falls, MT 90 nm out, 2 nm northeast of the line no report just now 2,467 ft
GTF Great Falls, MT 249 nm out, 10 nm north of the line, tower low IFR Sky: overcast at 400 feet Weather: mist from the west-northwest (290°) at 5 knots 0.25 mi 400 ft 3,680 ft 13:53 UTC
MLS Miles City, MT 479 nm out, 20 nm south of the line IFR Sky: a broken layer at 600 feet, overcast at 1,700 feet from the northwest (320°) at 9 knots 9 mi 600 ft 2,634 ft 13:53 UTC
BHK Baker, MT 548 nm out, 12 nm south of the line marginal VFR Sky: scattered clouds at 500 feet, a broken layer at 1,100 feet, overcast at 4,800 feet from the north (360°) at 4 knots 10+ mi 1,100 ft 2,980 ft 13:56 UTC
DXX Madison, MN 897 nm out, 7 nm southwest of the line low IFR Sky: overcast at 300 feet from the northwest (320°) at 4 knots 10+ mi 300 ft 1,082 ft 13:55 UTC
RST Rochester, MN 1067 nm out, 17 nm south of the line, tower VFR from the south (190°) at 11 knots 7 mi none 1,317 ft 13:54 UTC
LSE La Crosse, WI 1117 nm out, 1 nm southeast of the line, tower VFR from the south-southwest (200°) at 10 knots 10+ mi none 655 ft 13:53 UTC
MKE Milwaukee, WI 1276 nm out, 3 nm north of the line, tower VFR Sky: a few clouds at 18,000 feet, a broken layer at 25,000 feet from the south-southwest (210°) at 9 knots 10+ mi 25,000 ft 728 ft 13:52 UTC
TOL Toledo, OH 1476 nm out, 4 nm north of the line, tower low IFR Sky: overcast at 300 feet Weather: mist from the south (190°) at 5 knots 2 mi 300 ft 683 ft 13:52 UTC
HLG Wheeling, WV 1635 nm out, 8 nm south of the line, tower IFR Sky: a broken layer at 500 feet, overcast at 900 feet Weather: mist from the west (260°) at 5 knots 5 mi 500 ft 1,194 ft 13:53 UTC
IAD Washington, DC destination VFR Sky: a broken layer at 3,400 feet from the northwest (320°) at 12 knots, gusting to 23 10+ mi 3,400 ft 312 ft 9:52 am EDT (13:52 UTC)

The highest airport on this list sits at 3,680 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At IAD when you get there the forecast at the estimated arrival, 8:45 pm EDT (00:45 UTC)

Wind from the west-northwest at 3 knots, visibility more than 6 miles, a few clouds at 5,000 feet VFR

The whole forecast for IAD
  • From Mon 8:00 am EDT (12:00 UTC): wind from the north-northwest at 10 knots, gusting to 17, visibility 6 miles, mist, scattered clouds at 1,800 feet, a broken layer at 4,500 feet
  • From Mon 9:00 am EDT (13:00 UTC): wind from the north-northwest at 10 knots, gusting to 18, visibility more than 6 miles, a broken layer at 2,000 feet, a broken layer at 3,500 feet
  • From Mon 12:00 pm EDT (16:00 UTC): wind from the north-northwest at 13 knots, gusting to 21, visibility more than 6 miles, scattered clouds at 2,500 feet, a broken layer at 4,000 feet
  • From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 11 knots, gusting to 18, visibility more than 6 miles, a broken layer at 4,500 feet
  • From Mon 5:00 pm EDT (21:00 UTC): wind from the northwest at 7 knots, visibility more than 6 miles, scattered clouds at 5,000 feet
  • From Mon 8:00 pm EDT (00:00 UTC): wind from the west-northwest at 3 knots, visibility more than 6 miles, a few clouds at 5,000 feet
  • From Tue 10:00 am EDT (14:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
The forecast for GEG, the departure
  • From Mon 5:00 am PDT (12:00 UTC): wind from the northeast at 7 knots, visibility more than 6 miles, scattered clouds at 7,000 feet, overcast at 11,000 feet
  • From Mon 1:00 pm PDT (20:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 10,000 feet
  • From Tue 3:00 am PDT (10:00 UTC): wind light and variable, visibility more than 6 miles, clear skies

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

  • 6/8923 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local 16 nm from the route, 130 nm along the route · a VIP movement · starts Wednesday 14 October · ZLC
  • 6/8927 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local 5 nm from the route, 140 nm along the route · a VIP movement · starts Wednesday 14 October · ZSE
  • 6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 13 nm from the route, 1615 nm along the route · a VIP movement · today · ZOB
  • 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 13 nm from the route, 1615 nm along the route · a VIP movement · today · ZOB
  • 4/9383 WASHINGTON, DC., USA 8 nm from the route, at the destination end · security · ZDC
  • 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 4 nm from the route, at the destination end · a VIP movement · today · ZDC

Daylight

Sunset at GEG 6:06 pm PDT (01:06 UTC), at IAD 6:36 pm EDT (22:36 UTC) (civil twilight ends 7:02 pm EDT (23:02 UTC)). At 120 knots the arrival at IAD is after sunset there (6:36 pm EDT (22:36 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 Northwest
Radar now, the Pacific Northwest · loop National Weather Service
Radar now, the northern Rockies
Radar now, the northern Rockies · 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: Spokane International, Washington Dulles International.