Ontario International to Buffalo Niagara International ONT → BUF
1,884 nautical miles (2,168 statute miles) northeast on a straight line, true course 062°, about 050° magnetic at the departure end (variation 12E). At 120 knots that is 9 h 58 min at the quickest height in today's winds (34,000 ft, a 69-knot tailwind), arriving about 9:34 pm EDT (01:34 UTC), after sunset at the destination. 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: 1 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
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft. Over the first 70 nm of the route.
- AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 50 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 189 to 578 nm out.
- AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 209 to 309 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 259 to 788 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 259 to 489 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Near the route, 359 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). Over the route from 508 to 648 nm out.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 508 to 728 nm out.
- AIRMET TANGO 2W: 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 937 to 1256 nm out.
- AIRMET SIERRA 1E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, mist). Over the last 20 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
- urgent A21N at 3,000 ft, 31 nm southwest, 8:00 am PDT (15:00 UTC): remarks: bases 3,000 ft tops 9,000 ft. At the departure end, 31 nm southwest of the line.
as filed, and in English
LAX UUA /OV LGB/TM 1500/FL030/TP A21N/RM BASES 030 TOPS 090
- Report
- an urgent report filed through LAX
- Where
- over LGB
- Time
- 15:00 UTC
- Height
- at 3,000 ft
- Aircraft
- A21N
- Remarks
- bases 3,000 ft tops 9,000 ft
- urgent E75L at 6,600 ft, 4 nm west, 7:08 am PDT (14:08 UTC): light turbulence, remarks: low-level wind shear a 25-knot gain of airspeed during the climb 17L. 688 nm along the route, 4 nm west of the line.
as filed, and in English
COS UUA /OV COS/TM 1408/FL066/TP E75L/TB LGT/RM LLWS +25KTS DURC 17L
- Report
- an urgent report filed through COS
- Where
- over COS
- Time
- 14:08 UTC
- Height
- at 6,600 ft
- Aircraft
- E75L
- Turbulence
- light
- Remarks
- low-level wind shear a 25-knot gain of airspeed during the climb 17L
- urgent C172 at 6,700 ft, 48 nm northwest, 5:54 am PDT (12:54 UTC): remarks: low-level wind shear + 10 knots during the climb. 698 nm along the route, 48 nm northwest of the line.
as filed, and in English
APA UUA /OV KAPA/TM 1254/FL067/TP C172/RM LLWS +/- 10 KTS DURC
- Report
- an urgent report filed through APA
- Where
- over KAPA
- Time
- 12:54 UTC
- Height
- at 6,700 ft
- Aircraft
- C172
- Remarks
- low-level wind shear + 10 knots during the climb
- urgent FA7X at 6,800 ft, 48 nm northwest, 5:40 am PDT (12:40 UTC): remarks: low-level wind shear a 40-knot loss of airspeed knots during the climb runway 35R. 698 nm along the route, 48 nm northwest of the line.
as filed, and in English
APA UUA /OV KAPA/TM 1240/FL068/TP FA7X/RM LLWS -40 KTS DURC RY 35R
- Report
- an urgent report filed through APA
- Where
- over KAPA
- Time
- 12:40 UTC
- Height
- at 6,800 ft
- Aircraft
- FA7X
- Remarks
- low-level wind shear a 40-knot loss of airspeed knots during the climb runway 35R
- C172 at 5,000 ft, 41 nm south, 8:06 am PDT (15:06 UTC): moderate turbulence. At the departure end, 41 nm south of the line.
as filed, and in English
SAN UA /OV 10 NW OCN/TM 1506/FL050/TP C172/TB MOD
- Report
- a routine report filed through SAN
- Where
- 10 northwest ocn
- Time
- 15:06 UTC
- Height
- at 5,000 ft
- Aircraft
- C172
- Turbulence
- moderate
- C172 at 5,000 ft, 35 nm south, 8:05 am PDT (15:05 UTC): moderate turbulence. At the departure end, 35 nm south of the line.
as filed, and in English
SNA UA /OV DANAH/TM 1505/FL050/TP C172/TB MOD
- Report
- a routine report filed through SNA
- Where
- danah
- Time
- 15:05 UTC
- Height
- at 5,000 ft
- Aircraft
- C172
- Turbulence
- moderate
- B737 at 8,500 ft, 42 nm west, 6:58 am PDT (13:58 UTC): moderate turbulence above 8,500 ft. At the departure end, 42 nm west of the line.
as filed, and in English
LAX UA /OV 8 SW OF LAX/TM 1358/FL085/TP B737/TB MOD TURB 085
- Report
- a routine report filed through LAX
- Where
- 8 southwest of lax
- Time
- 13:58 UTC
- Height
- at 8,500 ft
- Aircraft
- B737
- Turbulence
- moderate turbulence at 8,500 ft
- A21N at 8,000 ft, 42 nm west, 6:30 am PDT (13:30 UTC): moderate turbulence. At the departure end, 42 nm west of the line.
as filed, and in English
LAX UA /OV LAX/TM 1330/FL080/TP A21N/TB MODERATE
- Report
- a routine report filed through LAX
- Where
- over LAX
- Time
- 13:30 UTC
- Height
- at 8,000 ft
- Aircraft
- A21N
- Turbulence
- moderate
- B737 at 13,000 ft, 19 nm northwest, 7:00 am PDT (14:00 UTC): moderate turbulence, remarks: dur desct from 13,000 ft to 11,000 ft. At the departure end, 19 nm northwest of the line.
as filed, and in English
ONT UA /OV 25N ONT/TM 1400/FL130/TP B737/TB MOD TURB/RM DUR DESCT 130-110
- Report
- a routine report filed through ONT
- Where
- 25N ont
- Time
- 14:00 UTC
- Height
- at 13,000 ft
- Aircraft
- B737
- Turbulence
- moderate turbulence
- Remarks
- dur desct from 13,000 ft to 11,000 ft
- A321 at 19,000 ft, 6 nm northwest, 5:39 am PDT (12:39 UTC): moderate chop turbulence, remarks: zlawc. 209 nm along the route, 6 nm northwest of the line.
as filed, and in English
CDC UA /OV PGS275017/TM 1239/FL190/TP A321/TB MOD CHOP/RM ZLAWC AWC-WEB
- Report
- a routine report filed through CDC
- Where
- 17 nm west (275°) of PGS
- Time
- 12:39 UTC
- Height
- at 19,000 ft
- Aircraft
- A321
- Turbulence
- moderate chop
- Remarks
- zlawc
- BE20 at 15,000 ft, 35 nm south, 7:45 am PDT (14:45 UTC): moderate turbulence, light icing, 0 °C, remarks: ice 150-125-ZDVWC-36. 508 nm along the route, 35 nm south of the line.
as filed, and in English
FMN UA /OV RSK008025/TM 1445/FL150/TP BE20/SK TOP 160 BASE 115/TA 00/TB OCNL MOD/IC LGT MX/RM ICE 150-125-ZDVWC-36
- Report
- a routine report filed through FMN
- Where
- 25 nm north (008°) of RSK
- Time
- 14:45 UTC
- Height
- at 15,000 ft
- Aircraft
- BE20
- Sky
- top 16,000 ft base 11,500 ft
- Temperature
- 0 °C
- Turbulence
- occasional moderate
- Icing
- light mixed
- Remarks
- ice 150-125-ZDVWC-36
- B738 descending, 47 nm north, 5:55 am PDT (12:55 UTC): moderate turbulence from 16,000 ft to 20,000 ft. 668 nm along the route, 47 nm north of the line.
as filed, and in English
DEN UA /OV 40SW DEN/TM 1255/FLDURD/TP B738/TB MOD 200-160
- Report
- a routine report filed through DEN
- Where
- 40SW den
- Time
- 12:55 UTC
- Height
- during the descent
- Aircraft
- B738
- Turbulence
- moderate from 20,000 ft to 16,000 ft
- E55P at 8,000 ft, 4 nm east, 7:30 am PDT (14:30 UTC): moderate turbulence. 678 nm along the route, 4 nm east of the line.
as filed, and in English
COS UA /OV 5S COS/TM 1430/FL080/TP E55P/TB MOD
- Report
- a routine report filed through COS
- Where
- 5S cos
- Time
- 14:30 UTC
- Height
- at 8,000 ft
- Aircraft
- E55P
- Turbulence
- moderate
- F2TH at 36,300 ft, 30 nm south, 6:15 am PDT (13:15 UTC): moderate clear-air turbulence above 36,300 ft, wind 255° at 90 knots. 688 nm along the route, 30 nm south of the line.
as filed, and in English
PUB UA /OV PUB /TM 1315 /FL363 /TP F2TH /WV 25590KT /TB MOD CAT 363
- Report
- a routine report filed through PUB
- Where
- over PUB
- Time
- 13:15 UTC
- Height
- at 36,300 ft
- Aircraft
- F2TH
- Wind
- from 255° at 90 knots
- Turbulence
- moderate clear-air turbulence at 36,300 ft
16 more routine reports are on the map.
Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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 16 forecast points nearest it (ONT, LAS, PRC, BCE, FMN, ALS, PUB, GLD, GRI, OMA, DSM, DBQ, JOT, MKG, CLE, BUF). 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 | 250° at 22 kt | −22 kt | 13 °C | 142 kt | 13 h 16 min | 12:52 am EDT (04:52 UTC) |
| 7,500 ft | 240° at 23 kt | −23 kt | 11 °C | 143 kt | 13 h 10 min | 12:46 am EDT (04:46 UTC) |
| 9,500 ft | 240° at 25 kt | −25 kt | 8 °C | 145 kt | 13 h | 12:36 am EDT (04:36 UTC) |
| 11,500 ft | 240° at 28 kt | −29 kt | 4 °C | 149 kt | 12 h 39 min | 12:15 am EDT (04:15 UTC) |
| 13,500 ft | 240° at 31 kt | −32 kt | 0 °C | 152 kt | 12 h 24 min | 12:00 am EDT (04:00 UTC) |
| 15,500 ft | 240° at 33 kt | −34 kt | -4 °C | 154 kt | 12 h 14 min | 11:50 pm EDT (03:50 UTC) |
| 17,500 ft | 240° at 35 kt | −36 kt | -9 °C | 156 kt | 12 h 05 min | 11:41 pm EDT (03:41 UTC) |
| 18,000 ft FL180 | 240° at 35 kt | −36 kt | -10 °C | 156 kt | 12 h 05 min | 11:41 pm EDT (03:41 UTC) |
| 24,000 ft FL240 | 240° at 47 kt | −47 kt | -21 °C | 167 kt | 11 h 17 min | 10:53 pm EDT (02:53 UTC) |
| 30,000 ft FL300 | 240° at 59 kt | −61 kt | -32 °C | 181 kt | 10 h 25 min | 10:01 pm EDT (02:01 UTC) |
| 34,000 ft FL340 | 250° at 67 kt | −69 kt | -38 °C | 189 kt | 9 h 58 min | 9:34 pm EDT (01:34 UTC) |
| 39,000 ft FL390 | 250° at 66 kt | −69 kt | -47 °C | 189 kt | 9 h 58 min | 9:34 pm EDT (01:34 UTC) |
Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ONT | used from 0 nm out; 25 nm from the line | L/V | 210/13 3° | 220/24 0° | 220/31 -3° | 230/33 -14° | 240/35 -22° | 230/55 -31° | 230/67 -37° | 230/74 -45° |
| LAS | used from 100 nm out; 65 nm from the line | 220/15 7° | 210/23 2° | 200/32 -4° | 200/43 -14° | 210/64 -23° | 210/78 -32° | 220/81 -38° | 220/80 -45° | |
| PRC | used from 249 nm out; 88 nm from the line | 200/38 5° | 200/44 -1° | 210/72 -11° | 220/78 -20° | 220/85 -29° | 230/99 -36° | 230/105 -47° | ||
| BCE | used from 299 nm out; 78 nm from the line | 200/31 -2° | 190/46 -14° | 210/72 -24° | 210/87 -30° | 220/89 -38° | 220/78 -46° | |||
| FMN | used from 399 nm out; 78 nm from the line | 170/14 8° | 210/28 0° | 230/57 -10° | 220/74 -21° | 230/82 -30° | 230/95 -37° | 230/102 -47° | ||
| ALS | used from 548 nm out; 62 nm from the line | 230/34 2° | 230/57 -9° | 230/72 -19° | 230/82 -27° | 230/91 -36° | 240/89 -48° | |||
| PUB | used from 648 nm out; 31 nm from the line | 250/31 11° | 240/42 5° | 230/46 -7° | 230/59 -20° | 240/77 -30° | 230/94 -37° | 240/95 -49° | ||
| GLD | used from 748 nm out; 56 nm from the line | 240/22 | 250/24 13° | 250/39 6° | 230/42 -8° | 230/55 -21° | 240/87 -30° | 240/96 -36° | 250/93 -48° | |
| GRI | used from 897 nm out; 89 nm from the line | 270/26 19° | 230/33 13° | 230/39 8° | 230/43 -9° | 240/55 -21° | 250/76 -28° | 260/84 -36° | 260/68 -47° | |
| OMA | used from 1047 nm out; 49 nm from the line | 210/23 | 240/34 20° | 230/40 14° | 220/43 7° | 240/38 -8° | 250/47 -21° | 270/70 -29° | 270/79 -36° | 270/68 -48° |
| DSM | used from 1147 nm out; 46 nm from the line | 230/34 | 230/32 20° | 220/33 12° | 240/35 5° | 250/39 -7° | 250/43 -21° | 280/61 -31° | 280/73 -37° | 280/67 -47° |
| DBQ | used from 1296 nm out; 50 nm from the line | 250/26 | 240/32 19° | 250/35 11° | 260/37 5° | 270/35 -9° | 270/40 -21° | 270/43 -35° | 280/49 -37° | 280/58 -46° |
| JOT | used from 1396 nm out; 53 nm from the line | 230/30 | 250/26 16° | 270/27 11° | 280/34 5° | 290/32 -8° | 280/37 -21° | 280/40 -36° | 290/46 -37° | 290/56 -47° |
| MKG | used from 1495 nm out; 60 nm from the line | 240/27 | 240/26 15° | 270/27 9° | 280/27 5° | 280/28 -9° | 280/32 -22° | 270/41 -38° | 290/44 -41° | 300/60 -48° |
| CLE | used from 1645 nm out; 106 nm from the line | 280/17 | 270/17 14° | 280/22 10° | 290/26 4° | 290/25 -8° | 280/31 -21° | 280/35 -36° | 280/43 -44° | 300/53 -48° |
| BUF | used from 1795 nm out; 65 nm from the line | 270/25 | 300/28 14° | 300/29 8° | 310/29 2° | 300/30 -9° | 290/33 -21° | 290/44 -37° | 290/56 -47° | 300/62 -51° |
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 |
|---|---|---|---|---|---|---|---|
| ONT Ontario, CA | departure | no report just now | 944 ft | ||||
| SBD San Bernardino, CA | 20 nm out, 7 nm south of the line, tower | no report just now | 1,159 ft | ||||
| GCN Grand Canyon, AZ | 289 nm out, 18 nm southeast of the line, tower | no report just now | 6,608 ft | ||||
| TEX Telluride, CO | 528 nm out, 11 nm northwest of the line | no report just now | 9,069 ft | ||||
| COS Colorado Springs, CO | 688 nm out, 4 nm west of the line, tower | no report just now | 6,187 ft | ||||
| OIN Oberlin, KS | 887 nm out, 2 nm south of the line | no report just now | 2,706 ft | ||||
| LNK Lincoln, NE | 1067 nm out, 8 nm north of the line, tower | no report just now | 1,218 ft | ||||
| DSM Des Moines, IA | 1216 nm out, 12 nm north of the line, tower | no report just now | 957 ft | ||||
| PWK Chicago/Prospect Heights/Wheeling, IL | 1476 nm out, 4 nm south of the line, tower | no report just now | 644 ft | ||||
| PTK Pontiac, MI | 1675 nm out, 2 nm northeast of the line, tower | no report just now | 980 ft | ||||
| CYQS St Thomas, | 1775 nm out, 5 nm southeast of the line | no report just now | 776 ft | ||||
| BUF Buffalo, NY | destination | no report just now | 726 ft |
The highest airport on this list sits at 9,069 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BUF when you get there the forecast at the estimated arrival, 9:34 pm EDT (01:34 UTC)
BUF 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
- 6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local 1 nm from the route, 160 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
- 6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local 25 nm from the route, 160 nm along the route · a VIP movement · starts tomorrow · ZLA
- 6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 20 nm from the route, 658 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
- 6/8992 Monroe, MI, Thursday, October 15, 2026 Local 21 nm from the route, 1675 nm along the route · a VIP movement · starts Thursday 15 October · ZOB
Daylight
Sunset at ONT 6:18 pm PDT (01:18 UTC), at BUF 6:37 pm EDT (22:37 UTC) (civil twilight ends 7:06 pm EDT (23:06 UTC)). At 120 knots the arrival at BUF is after sunset there (6:37 pm EDT (22:37 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: Ontario International, Buffalo Niagara International.