Pittsburgh International to Seattle-Tacoma International PIT → SEA
1,842 nautical miles (2,120 statute miles) northwest on a straight line, true course 297°, about 306° magnetic at the departure end (variation 9W). At 120 knots that is 15 h 13 min at the quickest height in today's winds (4,500 ft, a 1-knot tailwind), arriving about 11:51 am PDT (18:51 UTC). Right now PIT is IFR, wind from the north-northeast (030°) at 5 knots; SEA is VFR, wind from the north-northeast (030°) at 8 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: 939 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 1C: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the southwest at 40 knots, until 12:55 am EDT (04:55 UTC). Over the route from 1065 to 1075 nm out.
as issued
WSUS32 KKCI 120255 MKCC WST 120255 CONVECTIVE SIGMET 1C VALID UNTIL 0455Z SD ND MT WY FROM 30WSW DIK-50NW DPR-60WNW RAP-50ENE SHR-30WSW DIK AREA TS MOV FROM 22040KT. 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 289 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 10 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 0 nm of the route.
- 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 747 to 846 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 926 to 1573 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1294 to 1603 nm out.
- AIRMET ZULU 2C: moderate icing up to 20,000 ft. Over the route from 1344 to 1782 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 1384 to 1583 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 169 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 PIT.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B38M at 29,000 ft, 40 nm south, 8:55 pm EDT (00:55 UTC): moderate turbulence above 29,000 ft, remarks: zob. At the departure end, 40 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
- C68A at 2,700 ft, 0 nm south, 8:45 pm EDT (00:45 UTC): overcast above 2,700 ft, remarks: landing runway 10R. At the departure end, 0 nm south of the line.
as filed, and in English
PIT UA /OV KPIT/TM 0045/FL027/TP C68A/SK OVC027/RM LANDING RWY 10R
- Report
- a routine report filed through PIT
- Where
- over KPIT
- Time
- 00:45 UTC
- Height
- at 2,700 ft
- Aircraft
- C68A
- Sky
- overcast from 2,700 ft
- Remarks
- landing runway 10R
- CRJ7 descending, 2 nm southwest, 9:17 pm EDT (01:17 UTC): remarks: bases 2,000 ft. At the departure end, 2 nm southwest of the line.
as filed, and in English
CAK UA /OV CAK/TM 0117/FLDURD/TP CRJ7/RM BASES 020
- Report
- a routine report filed through CAK
- Where
- over CAK
- Time
- 01:17 UTC
- Height
- during the descent
- Aircraft
- CRJ7
- Remarks
- bases 2,000 ft
- A320 descending, 30 nm north, 11:27 pm EDT (03:27 UTC): overcast above 1,400 ft. 169 nm along the route, 30 nm north of the line.
as filed, and in English
DTW UA /OV DTW/TM 0327/FLDURD/TP A320/SK 014 OVC
- Report
- a routine report filed through DTW
- Where
- over DTW
- Time
- 03:27 UTC
- Height
- during the descent
- Aircraft
- A320
- Sky
- at 1,400 ft overcast
- PA44 descending, 13 nm southwest, 10:27 pm EDT (02:27 UTC): a broken layer from 900 ft to 1,500 ft; a broken layer from 2,600 ft to 3,500 ft, fog. 169 nm along the route, 13 nm southwest of the line.
as filed, and in English
TOL UA /OV TOL/TM 0227/FLDURD/TP PA44/SK BKN009 TOPS015 BKN026 TOPS035/WX FG
- Report
- a routine report filed through TOL
- Where
- over TOL
- Time
- 02:27 UTC
- Height
- during the descent
- Aircraft
- PA44
- Sky
- BKN009 TOPS015 BKN026 TOPS035
- Weather
- fog
- CRJ7 at 600 ft, 30 nm north, 10:07 pm EDT (02:07 UTC): a broken layer above 1,500 ft. 169 nm along the route, 30 nm north of the line.
as filed, and in English
DTW UA /OV DTW/TM 0207/FLSFC/TP CRJ7/SK BKN 015
- Report
- a routine report filed through DTW
- Where
- over DTW
- Time
- 02:07 UTC
- Height
- at the surface
- Aircraft
- CRJ7
- Sky
- a broken layer from 1,500 ft
- C525 descending, 13 nm southwest, 9:41 pm EDT (01:41 UTC): a routine report with nothing remarked on. 169 nm along the route, 13 nm southwest of the line.
as filed, and in English
TOL UA /OV TOL/TM 0141/FLDURD/TP C525/SK TOPS035 BKN010/WX 2SM
- Report
- a routine report filed through TOL
- Where
- over TOL
- Time
- 01:41 UTC
- Height
- during the descent
- Aircraft
- C525
- Sky
- TOPS035 BKN010
- Weather
- 2SM
- CRJ7 descending, 30 nm north, 9:01 pm EDT (01:01 UTC): overcast above 2,800 ft. 169 nm along the route, 30 nm north of the line.
as filed, and in English
DTW UA /OV FINAL 3R /TM 0101/FLDURD/TP CRJ7/SK OVC 028
- Report
- a routine report filed through DTW
- Where
- final 3R
- Time
- 01:01 UTC
- Height
- during the descent
- Aircraft
- CRJ7
- Sky
- overcast from 2,800 ft
- E170 at 21,000 ft, 21 nm northeast, 9:07 pm EDT (01:07 UTC): light chop turbulence, remarks: during the climb zob. 229 nm along the route, 21 nm northeast of the line.
as filed, and in English
LAN UA /OV LAN180020/TM 0107/FL210/TP E170/TB LGHT CHOP/RM DURC ZOB
- Report
- a routine report filed through LAN
- Where
- 20 nm south (180°) of LAN
- Time
- 01:07 UTC
- Height
- at 21,000 ft
- Aircraft
- E170
- Turbulence
- lght chop
- Remarks
- during the climb zob
- E295 at 37,000 ft, 9 nm southwest, 8:53 pm EDT (00:53 UTC): light chop turbulence. 388 nm along the route, 9 nm southwest of the line.
as filed, and in English
UES UA /OV BAE/TM 0053/FL370/TP E295/TB OCNL LGT CHOP
- Report
- a routine report filed through UES
- Where
- over BAE
- Time
- 00:53 UTC
- Height
- at 37,000 ft
- Aircraft
- E295
- Turbulence
- occasional light chop
- CL30 at 4,200 ft, 30 nm south, 11:16 pm EDT (03:16 UTC): no icing, overcast above 4,200 ft, remarks: during the descent ils runway 12. 1503 nm along the route, 30 nm south of the line.
as filed, and in English
MSO UA /OV MSO/TM 0316/FL042/TP CL30/SK OVC042/WX 2 1/2SM/IC NEG/RM DURD ILS RY 12
- Report
- a routine report filed through MSO
- Where
- over MSO
- Time
- 03:16 UTC
- Height
- at 4,200 ft
- Aircraft
- CL30
- Sky
- overcast from 4,200 ft
- Weather
- 2, 1/2SM
- Icing
- none
- Remarks
- during the descent ils runway 12
- BCS1 at 3,700 ft, 30 nm south, 9:47 pm EDT (01:47 UTC): snow, rain, remarks: during the descent ils runway 12. 1503 nm along the route, 30 nm south of the line.
as filed, and in English
MSO UA /OV MSO/TM 0147/FL037/TP BCS1/SK 037/WX SN RA/RM DURD ILS RY 12
- Report
- a routine report filed through MSO
- Where
- over MSO
- Time
- 01:47 UTC
- Height
- at 3,700 ft
- Aircraft
- BCS1
- Sky
- at 3,700 ft
- Weather
- snow, rain
- Remarks
- during the descent ils runway 12
- SB20 at 16,000 ft, 22 nm north, 9:52 pm EDT (01:52 UTC): remarks: zse. At the destination end, 22 nm north of the line.
as filed, and in English
PAE UA /OV PAE075045/TM 0152/FL160/TP SB20/SK TOP120/RM ZSE
- Report
- a routine report filed through PAE
- Where
- 45 nm east (075°) of PAE
- Time
- 01:52 UTC
- Height
- at 16,000 ft
- Aircraft
- SB20
- Sky
- TOP120
- Remarks
- zse
- A321 at 13,500 ft, 36 nm south, 9:54 pm EDT (01:54 UTC): remarks: zse. At the destination end, 36 nm south of the line.
as filed, and in English
SEA UA /OV SEA120045/TM 0154/FL135/TP A321/SK TOP130/RM ZSE
- Report
- a routine report filed through SEA
- Where
- 45 nm southeast (120°) of SEA
- Time
- 01:54 UTC
- Height
- at 13,500 ft
- Aircraft
- A321
- Sky
- TOP130
- Remarks
- zse
2 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 17 forecast points nearest it (AGC, CLE, FWA, MKG, GRB, LSE, MSP, AXN, ABR, DIK, MLS, BIL, GTF, GPI, GEG, YKM, SEA). 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 | 190° at 3 kt | −1 kt | 1 °C | 121 kt | 15 h 13 min | 11:51 am PDT (18:51 UTC) |
| 6,500 ft | 230° at 3 kt | +1 kt | 9 °C | 119 kt | 15 h 29 min | 12:07 pm PDT (19:07 UTC) |
| 8,500 ft | 240° at 4 kt | +3 kt | 6 °C | 117 kt | 15 h 45 min | 12:23 pm PDT (19:23 UTC) |
| 10,500 ft | 230° at 8 kt | +5 kt | 2 °C | 115 kt | 16 h 01 min | 12:39 pm PDT (19:39 UTC) |
| 12,500 ft | 240° at 11 kt | +8 kt | -1 °C | 112 kt | 16 h 27 min | 1:05 pm PDT (20:05 UTC) |
| 14,500 ft | 240° at 14 kt | +11 kt | -5 °C | 109 kt | 16 h 54 min | 1:32 pm PDT (20:32 UTC) |
| 16,500 ft | 250° at 17 kt | +15 kt | -9 °C | 105 kt | 17 h 33 min | 2:11 pm PDT (21:11 UTC) |
| 18,000 ft FL180 | 250° at 19 kt | +17 kt | -12 °C | 103 kt | 17 h 53 min | 2:31 pm PDT (21:31 UTC) |
| 24,000 ft FL240 | 250° at 21 kt | +19 kt | -23 °C | 101 kt | 18 h 14 min | 2:52 pm PDT (21:52 UTC) |
| 30,000 ft FL300 | 260° at 24 kt | +24 kt | -37 °C | 96 kt | 19 h 11 min | 3:49 pm PDT (22:49 UTC) |
| 34,000 ft FL340 | 270° at 35 kt | +35 kt | -42 °C | 85 kt | 21 h 40 min | 6:18 pm PDT (01:18 UTC) |
| 39,000 ft FL390 | 270° at 44 kt | +45 kt | -48 °C | 75 kt | 24 h 34 min | 9:12 pm PDT (04:12 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| AGC | used from 0 nm out; 41 nm from the line | 350/14 | 330/20 11° | 340/18 8° | 330/17 3° | 340/22 -11° | 340/31 -22° | 330/33 -36° | 300/34 -41° | 300/35 -47° |
| CLE | used from 50 nm out; 23 nm from the line | 340/7 | 010/16 13° | 350/18 8° | 350/20 3° | 340/31 -10° | 340/46 -21° | 340/54 -37° | 330/62 -44° | 340/65 -49° |
| FWA | used from 149 nm out; 83 nm from the line | 300/17 | 320/20 16° | 330/20 10° | 340/15 3° | 310/27 -8° | 320/37 -20° | 330/52 -36° | 330/65 -43° | 330/60 -50° |
| MKG | used from 249 nm out; 48 nm from the line | 260/22 | 290/16 15° | 300/11 10° | 290/5 3° | 300/26 -9° | 300/32 -20° | 320/48 -36° | 320/61 -45° | 310/74 -53° |
| GRB | used from 398 nm out; 72 nm from the line | 250/36 | 270/23 16° | 270/14 9° | 240/18 4° | 280/26 -9° | 280/29 -20° | 290/42 -36° | 290/51 -45° | 290/72 -55° |
| LSE | used from 448 nm out; 58 nm from the line | 230/40 | 240/24 17° | 240/13 10° | 250/13 6° | 280/22 -9° | 250/28 -21° | 250/41 -34° | 260/42 -44° | 270/62 -53° |
| MSP | used from 597 nm out; 20 nm from the line | 230/26 | 240/30 17° | 240/24 12° | 250/22 5° | 250/35 -10° | 260/36 -21° | 250/41 -36° | 250/49 -45° | 260/58 -52° |
| AXN | used from 697 nm out; 48 nm from the line | 100/14 | 250/21 14° | 240/24 12° | 240/31 5° | 260/36 -10° | 260/40 -21° | 250/42 -36° | 260/48 -45° | 260/53 -50° |
| ABR | used from 796 nm out; 32 nm from the line | 070/14 | 250/10 17° | 270/16 11° | 260/28 5° | 260/36 -10° | 260/41 -22° | 270/33 -37° | 260/42 -42° | 260/50 -48° |
| DIK | used from 946 nm out; 80 nm from the line | 150/24 7° | 200/38 6° | 220/53 0° | 230/51 -9° | 230/49 -21° | 240/37 -37° | 240/47 -44° | 250/65 -48° | |
| MLS | used from 1095 nm out; 52 nm from the line | 150/23 2° | 190/29 4° | 210/44 2° | 220/32 -10° | 210/36 -21° | 200/48 -37° | 230/63 -40° | 240/71 -47° | |
| BIL | used from 1244 nm out; 74 nm from the line | 080/13 | 180/9 -2° | 210/38 0° | 220/51 -11° | 210/46 -22° | 210/58 -35° | 230/73 -39° | 230/72 -45° | |
| GTF | used from 1294 nm out; 80 nm from the line | 070/11 | 080/15 -7° | 110/19 -9° | 190/25 -14° | 200/34 -23° | 200/54 -39° | 220/66 -40° | 220/77 -44° | |
| GPI | used from 1493 nm out; 54 nm from the line | 070/19 -5° | 100/16 -7° | 080/10 -8° | 130/8 -19° | 170/37 -28° | 200/50 -40° | 210/43 -40° | 220/41 -42° | |
| GEG | used from 1593 nm out; 31 nm from the line | 080/16 -2° | 050/17 -7° | 080/9 -10° | 190/33 -21° | 180/31 -32° | L/V -35° | L/V -37° | 270/8 -40° | |
| YKM | used from 1742 nm out; 55 nm from the line | 070/10 | 040/15 -1° | 020/27 -8° | 030/25 -13° | 020/48 -20° | 010/83 -27° | 010/77 -37° | 010/49 -40° | 350/14 -41° |
| SEA | used from 1792 nm out; 25 nm from the line | 050/7 | 050/11 1° | 050/12 -5° | 030/31 -7° | 010/61 -15° | 010/69 -26° | 360/73 -40° | 360/62 -47° | 330/21 -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
| Airport | Where | Conditions | Wind | Visibility | Ceiling | Elevation | Reported |
|---|---|---|---|---|---|---|---|
| PIT Pittsburgh, PA | departure | IFR Sky: overcast at 800 feet | from the north-northeast (030°) at 5 knots | 10+ mi | 800 ft | 1,202 ft | 10:51 pm EDT (02:51 UTC) |
| CAK Akron, OH | 60 nm out, 2 nm southwest of the line, tower | marginal VFR Sky: scattered clouds at 800 feet, overcast at 1,600 feet Weather: light drizzle | from the northwest (320°) at 4 knots | 8 mi | 1,600 ft | 1,225 ft | 03:12 UTC |
| BTL Battle Creek, MI | 249 nm out, 2 nm northwest of the line, tower | VFR | from the south-southwest (210°) at 5 knots | 9 mi | none | 951 ft | 02:53 UTC |
| CMY Sparta, WI | 508 nm out, 3 nm northwest of the line, tower | VFR | from the south (190°) at 13 knots, gusting to 19 | 10+ mi | none | 839 ft | 02:55 UTC |
| FCM Minneapolis, MN | 637 nm out, 12 nm north of the line, tower | VFR | from the south (190°) at 8 knots | 10+ mi | none | 906 ft | 02:53 UTC |
| VVV Ortonville, MN | 767 nm out, 2 nm north of the line | IFR Sky: overcast at 600 feet | from the north-northwest (340°) at 9 knots | 10+ mi | 600 ft | 1,101 ft | 03:15 UTC |
| BHK Baker, MT | 1095 nm out, 15 nm southwest of the line | IFR Sky: overcast at 700 feet Weather: light rain | from the east (090°) at 17 knots, gusting to 25 | 10+ mi | 700 ft | 2,980 ft | 02:51 UTC |
| MLS Miles City, MT | 1165 nm out, 21 nm south of the line | marginal VFR Sky: a few clouds at 900 feet, a broken layer at 1,700 feet, overcast at 2,700 feet Weather: rain | from the east (080°) at 9 knots | 7 mi | 1,700 ft | 2,634 ft | 03:10 UTC |
| GTF Great Falls, MT | 1394 nm out, 14 nm north of the line, tower | low IFR Sky: a few clouds at 300 feet, overcast at 700 feet Weather: light snow, mist | from the north-northeast (020°) at 10 knots | 0.75 mi | 700 ft | 3,680 ft | 02:53 UTC |
| GEG Spokane, WA | 1653 nm out, 9 nm northeast of the line, tower | VFR Sky: a broken layer at 6,000 feet, a broken layer at 11,000 feet | from the northeast (040°) at 10 knots | 10+ mi | 6,000 ft | 2,385 ft | 02:53 UTC |
| MWH Moses Lake, WA | 1722 nm out, 18 nm south of the line, tower | VFR Sky: scattered clouds at 8,500 feet, overcast at 11,000 feet | from the north-northwest (330°) at 3 knots | 10+ mi | 11,000 ft | 1,188 ft | 02:52 UTC |
| SEA Seattle, WA | destination | VFR Sky: a few clouds at 3,000 feet | from the north-northeast (030°) at 8 knots | 10+ mi | none | 432 ft | 7:53 pm PDT (02:53 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 SEA when you get there the forecast at the estimated arrival, 11:51 am PDT (18:51 UTC)
Wind from the west at 6 knots, visibility more than 6 miles, clear skies VFR
The whole forecast for SEA
- From Sun 8:00 pm PDT (03:00 UTC): wind from the north at 6 knots, visibility more than 6 miles, clear skies
- From Mon 3:00 am PDT (10:00 UTC): wind from the southeast at 4 knots, visibility more than 6 miles, patches of fog, clear skies
- From Mon 9:00 am PDT (16:00 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 west at 6 knots, visibility more than 6 miles, clear skies
- From Mon 8:00 pm PDT (03:00 UTC): wind from the northwest at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
The forecast for PIT, the departure
- From Sun 11:00 pm EDT (03:00 UTC): wind from the north-northeast at 5 knots, visibility more than 6 miles, a broken layer at 800 feet
- From Mon 5:00 am EDT (09:00 UTC): wind from the north-northwest at 5 knots, visibility more than 6 miles, overcast at 700 feet
- From Mon 10:00 am EDT (14:00 UTC): wind from the west-northwest at 5 knots, visibility more than 6 miles, overcast at 1,200 feet
- From Mon 2:00 pm EDT (18:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, overcast at 2,500 feet
- From Mon 4:00 pm EDT (20:00 UTC): wind from the west-southwest at 5 knots, visibility more than 6 miles, scattered clouds at 3,500 feet, a broken layer at 10,000 feet
- From Mon 8:00 pm EDT (00:00 UTC): wind from the south-southwest at 4 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, at the departure end · a VIP movement · today · ZOB
- 6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 15 nm from the route, at the departure end · a VIP movement · today · ZOB
Daylight
Sunset at PIT 6:45 pm EDT (22:45 UTC), at SEA 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 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







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: Pittsburgh International, Seattle-Tacoma International.
