Ontario International to Billings Logan International ONT → BIL

Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of

• SIGMET W22W: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the south at 35 knots, until 5:55 am PDT (12:55 UTC). Near the route, 220 nm along the route.
  as issued

  WSUS33 KKCI 121055
  MKCW WST 121055
  CONVECTIVE SIGMET 22W
  VALID UNTIL 1255Z
  AZ UT NV
  FROM 40W DTA-40WNW HVE-20SSE BCE-50NE LAS-70ENE BTY-40W DTA
  AREA TS MOV FROM 20035KT. TOPS TO FL300.

• SIGMET W21W: thunderstorms (a convective SIGMET) up to 27,000 ft, moving from the southwest at 20 knots, until 5:55 am PDT (12:55 UTC). Over the route from 459 to 459 nm out.
  as issued

  WSUS33 KKCI 121055
  MKCW WST 121055
  CONVECTIVE SIGMET 21W
  VALID UNTIL 1255Z
  UT ID NV
  FROM 40ENE TWF-20SSE PIH-40E BVL-20WNW BVL-40ENE TWF
  AREA TS MOV FROM 24020KT. TOPS TO FL270.

• AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the first 439 nm of the route.
• AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 60 nm of the route.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 190 to 798 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 569 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 last 130 nm of the route.
• AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the last 0 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 ONT.

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

Not fetched just now.

At BIL when you get there the forecast at the estimated arrival, 9:53 am MDT (15:53 UTC)

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

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

• 4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 19 nm from the route, at the departure end · security · ZLA
• 6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local 16 nm from the route, 170 nm along the route · a VIP movement · starts tomorrow · ZLA

Daylight

Sunset at ONT 6:18 pm PDT (01:18 UTC), at BIL 6:32 pm MDT (00:32 UTC) (civil twilight ends 7:02 pm MDT (01:02 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.