The U.S. aircraft register, updated daily
Plan a flight · Sun 11:43 pm PDT (06:43 UTC)

Seattle-Tacoma International to John Glenn Columbus International SEA → CMH

1,748 nautical miles (2,011 statute miles) east on a straight line, true course 090°, about 074° magnetic at the departure end (variation 16E). At 120 knots that is 10 h 43 min at the quickest height in today's winds (39,000 ft, a 43-knot tailwind), arriving about 1:26 pm EDT (17:26 UTC). Right now SEA is VFR, wind from the east-southeast (110°) at 6 knots; CMH is marginal VFR, wind from the north-northwest (330°) 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: 929 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 C11C: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the southwest at 40 knots, until 12:55 am PDT (07:55 UTC). Near the route, 809 nm along the route.
    as issued
    WSUS32 KKCI 120555
    MKCC WST 120555
    CONVECTIVE SIGMET 11C
    VALID UNTIL 0755Z
    SD WY
    FROM 60WNW DPR-20SSE DPR-40SSW RAP-60W RAP-60WNW DPR
    DMSHG AREA TS MOV FROM 22040KT. TOPS TO FL310.
  • AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 180 nm of the route.
  • AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 120 to 619 nm out.
  • AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 240 to 549 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 270 to 1119 nm out.
  • AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 270 to 459 nm out.
  • AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 629 to 689 nm out.
  • AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Near the route, 699 nm along the route.
  • 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). Near the route, 739 nm along the route.
  • 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 1218 to 1398 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 220 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 SEA.

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

  • LJ45 at 10,000 ft, 13 nm northeast, 9:31 pm PDT (04:31 UTC): no turbulence, clear, remarks: ground fog at fwa FV10SM on final runway 14. 1608 nm along the route, 13 nm northeast of the line.
    as filed, and in English
    FWA UA /OV OLK/TM 0431/FL100/TP LJ45/SK CLR/TB SMOOTH/RM GROUND FOG AT FWA. FV10SM ON FINAL RY 14
    Report
    a routine report filed through FWA
    Where
    over OLK
    Time
    04:31 UTC
    Height
    at 10,000 ft
    Aircraft
    LJ45
    Sky
    clear
    Turbulence
    smooth
    Remarks
    ground fog at fwa FV10SM on final runway 14
  • MD83 climbing, 11 nm south, 10:04 pm PDT (05:04 UTC): a routine report with nothing remarked on. At the destination end, 11 nm south 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

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 17 forecast points nearest it (SEA, YKM, GEG, LWS, GPI, GTF, BIL, MLS, DIK, PIR, ABR, FSD, MCW, DBQ, JOT, FWA, CMH). A plus sign is a headwind, a minus sign a tailwind.

HeightAverage windHead- or tailwindTemperatureGround speedTime en routeArrival
3,500 ft240° at 13 kt−8 kt128 kt13 h 39 min4:22 pm EDT (20:22 UTC)
5,500 ft210° at 5 kt−1 kt4 °C121 kt14 h 27 min5:10 pm EDT (21:10 UTC)
7,500 ft220° at 5 kt−2 kt8 °C122 kt14 h 20 min5:03 pm EDT (21:03 UTC)
9,500 ft230° at 6 kt−3 kt4 °C123 kt14 h 13 min4:56 pm EDT (20:56 UTC)
11,500 ft230° at 11 kt−5 kt1 °C125 kt13 h 59 min4:42 pm EDT (20:42 UTC)
13,500 ft230° at 13 kt−8 kt-3 °C128 kt13 h 39 min4:22 pm EDT (20:22 UTC)
15,500 ft240° at 16 kt−11 kt-7 °C131 kt13 h 21 min4:04 pm EDT (20:04 UTC)
17,500 ft240° at 18 kt−14 kt-10 °C134 kt13 h 03 min3:46 pm EDT (19:46 UTC)
18,000 ft FL180240° at 19 kt−15 kt-11 °C135 kt12 h 57 min3:40 pm EDT (19:40 UTC)
24,000 ft FL240250° at 21 kt−17 kt-23 °C137 kt12 h 46 min3:29 pm EDT (19:29 UTC)
30,000 ft FL300250° at 24 kt−21 kt-36 °C141 kt12 h 24 min3:07 pm EDT (19:07 UTC)
34,000 ft FL340260° at 36 kt−35 kt-41 °C155 kt11 h 17 min2:00 pm EDT (18:00 UTC)
39,000 ft FL390260° at 44 kt−43 kt-47 °C163 kt10 h 43 min1:26 pm EDT (17:26 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
PointFrom3,0006,0009,00012,00018,00024,00030,00034,00039,000
SEAused from 0 nm out; 25 nm from the line050/7050/11 1°050/12 -5°030/31 -7°010/61 -15°010/69 -26°360/73 -40°360/62 -47°330/21 -43°
YKMused from 50 nm out; 52 nm from the line070/10040/15 -1°020/27 -8°030/25 -13°020/48 -20°010/83 -27°010/77 -37°010/49 -40°350/14 -41°
GEGused from 100 nm out; 70 nm from the line080/16 -2°050/17 -7°080/9 -10°190/33 -21°180/31 -32°L/V -35°L/V -37°270/8 -40°
LWSused from 250 nm out; 79 nm from the line070/10080/12 -2°030/12 -6°080/7 -10°170/34 -21°160/46 -32°200/33 -35°220/22 -35°230/18 -38°
GPIused from 300 nm out; 69 nm from the line070/19 -5°100/16 -7°080/10 -8°130/8 -19°170/37 -28°200/50 -40°210/43 -40°220/41 -42°
GTFused from 350 nm out; 76 nm from the line070/11080/15 -7°110/19 -9°190/25 -14°200/34 -23°200/54 -39°220/66 -40°220/77 -44°
BILused from 499 nm out; 68 nm from the line080/13180/9 -2°210/38 0°220/51 -11°210/46 -22°210/58 -35°230/73 -39°230/72 -45°
MLSused from 599 nm out; 52 nm from the line150/23 2°190/29 4°210/44 2°220/32 -10°210/36 -21°200/48 -37°230/63 -40°240/71 -47°
DIKused from 749 nm out; 66 nm from the line150/24 7°200/38 6°220/53 0°230/51 -9°230/49 -21°240/37 -37°240/47 -44°250/65 -48°
PIRused from 849 nm out; 78 nm from the line170/22 19°190/25 13°210/32 6°240/23 -9°250/32 -21°250/38 -36°260/44 -40°260/52 -47°
ABRused from 949 nm out; 39 nm from the line070/14250/10 17°270/16 11°260/28 5°260/36 -10°260/41 -22°270/33 -37°260/42 -42°260/50 -48°
FSDused from 1049 nm out; 53 nm from the line190/9230/30 18°240/23 13°240/20 6°260/22 -9°250/31 -21°250/43 -36°260/49 -43°270/53 -47°
MCWused from 1148 nm out; 73 nm from the line220/44250/30 17°230/14 12°240/17 6°250/22 -8°270/29 -20°250/34 -34°260/52 -43°260/59 -51°
DBQused from 1298 nm out; 49 nm from the line230/33250/30 16°280/15 9°260/15 5°260/21 -7°260/24 -20°250/37 -33°270/42 -43°280/63 -52°
JOTused from 1448 nm out; 31 nm from the line250/23270/22 15°250/16 10°240/9 4°280/22 -7°280/29 -19°300/29 -34°290/50 -43°300/64 -52°
FWAused from 1548 nm out; 54 nm from the line300/17320/20 16°330/20 10°340/15 3°310/27 -8°320/37 -20°330/52 -36°330/65 -43°330/60 -50°
CMHused from 1698 nm out; 25 nm from the line330/15340/22 14°340/24 9°340/23 4°340/35 -9°340/49 -20°340/58 -37°330/70 -42°340/55 -47°

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
SEA Seattle, WA departure VFR from the east-southeast (110°) at 6 knots 10+ mi none 432 ft 10:53 pm PDT (05:53 UTC)
MWH Moses Lake, WA 120 nm out, 12 nm south of the line, tower VFR Sky: overcast at 12,000 feet from the north-northwest (330°) at 4 knots 10+ mi 12,000 ft 1,188 ft 05:52 UTC
MSO Missoula, MT 340 nm out, 14 nm south of the line, tower VFR Sky: a few clouds at 1,700 feet, overcast at 6,000 feet calm 10+ mi 6,000 ft 3,205 ft 06:07 UTC
HLN Helena, MT 429 nm out, 22 nm south of the line, tower VFR Sky: a few clouds at 2,100 feet, overcast at 5,000 feet from the west (270°) at 8 knots 10+ mi 5,000 ft 3,877 ft 05:53 UTC
RPX Roundup, MT 569 nm out, 7 nm southwest of the line no report just now 3,490 ft
LEM Lemmon, SD 839 nm out, 19 nm north of the line no report just now 2,572 ft
MBG Mobridge, SD 909 nm out, 16 nm north of the line IFR Sky: a broken layer at 800 feet, overcast at 1,200 feet from the north-northeast (030°) at 9 knots 7 mi 800 ft 1,716 ft 06:21 UTC
TKC Tracy, MN 1128 nm out, 5 nm north of the line VFR from the northwest (310°) at 4 knots 10+ mi none 1,335 ft 06:35 UTC
DBQ Dubuque, IA 1368 nm out, 22 nm southwest of the line, tower VFR from the south-southwest (200°) at 9 knots 10+ mi none 1,076 ft 05:53 UTC
GYY Gary/Chicago, IN 1518 nm out, 5 nm south of the line, tower VFR from the south (190°) at 6 knots 10+ mi none 596 ft 06:35 UTC
FWA Fort Wayne, IN 1628 nm out, 4 nm north of the line, tower marginal VFR Weather: mist, shallow fog from the south (180°) at 4 knots 5 mi none 814 ft 05:54 UTC
CMH Columbus, OH destination marginal VFR Sky: overcast at 1,400 feet from the north-northwest (330°) at 8 knots 10+ mi 1,400 ft 815 ft 1:51 am EDT (05:51 UTC)

The highest airport on this list sits at 3,877 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At CMH when you get there the forecast at the estimated arrival, 1:26 pm EDT (17:26 UTC)

Wind from the southwest at 9 knots, visibility more than 6 miles, scattered clouds at 25,000 feet VFR

The whole forecast for CMH
  • From Mon 2:00 am EDT (06:00 UTC): wind from the west-northwest at 6 knots, visibility more than 6 miles, overcast at 1,200 feet
  • From Mon 4:00 am EDT (08:00 UTC): wind from the west at 4 knots, visibility 4 miles, mist, overcast at 800 feet
  • At times between Mon 6:00 am EDT (10:00 UTC) and 9:00 am EDT (13:00 UTC): visibility 2 miles, mist, scattered clouds at 800 feet
  • From Mon 10:00 am EDT (14:00 UTC): wind from the southwest at 9 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
  • From Mon 8:00 pm EDT (00:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, a few clouds at 10,000 feet, scattered clouds at 25,000 feet
The forecast for SEA, the departure
  • From Sun 11:00 pm PDT (06:00 UTC): wind from the east-northeast 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 south 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

No temporary flight restriction on or near this route right now.

Daylight

Sunset at SEA 6:27 pm PDT (01:27 UTC), at CMH 6:56 pm EDT (22:56 UTC) (civil twilight ends 7:24 pm EDT (23:24 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: Seattle-Tacoma International, John Glenn Columbus International.