Denver International to Flagstaff Pulliam Airport DEN → FLG
437 nautical miles (503 statute miles) southwest on a straight line, true course 232°, about 224° magnetic at the departure end (variation 8E). At 120 knots that is 4 h 28 min at the quickest height in today's winds (8,500 ft, a 22-knot headwind), arriving about 8:30 am MST (15:30 UTC). Right now DEN is VFR, wind from the south-southwest (210°) at 14 knots; FLG is marginal VFR, wind from the south (190°) at 15 knots, gusting to 26. 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: 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, at the departure end.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the whole route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the first 278 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 229 nm of 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 last 30 nm of the route.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the last 30 nm of the route.
- 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 last 10 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 DEN.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B737 descending, 3 nm south, 2:10 am MDT (08:10 UTC): light chop turbulence. At the departure end, 3 nm south of the line.
as filed, and in English
DEN UA /OV DEN/TM 0810/FLDURD/TP B737/TB LGT CHOP
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 08:10 UTC
- Height
- during the descent
- Aircraft
- B737
- Turbulence
- light chop
- B763 at 23,000 ft, 27 nm northwest, 4:26 am MDT (10:26 UTC): light chop turbulence, remarks: zdvwc. 20 nm along the route, 27 nm northwest of the line.
as filed, and in English
DEN UA /OV DEN278037/TM 1026/FL230/TP B763/TB OCNL LGT CHOP/RM ZDVWC
- Report
- a routine report filed through DEN
- Where
- 37 nm west (278°) of DEN
- Time
- 10:26 UTC
- Height
- at 23,000 ft
- Aircraft
- B763
- Turbulence
- occasional light chop
- Remarks
- zdvwc
- B38M at 22,000 ft, 11 nm southeast, 2:14 am MDT (08:14 UTC): no turbulence, remarks: zdvwc. 60 nm along the route, 11 nm southeast of the line.
as filed, and in English
DEN UA /OV DEN216059/TM 0814/FL220/TP B38M/TB NEG/RM ZDVWC
- Report
- a routine report filed through DEN
- Where
- 59 nm southwest (216°) of DEN
- Time
- 08:14 UTC
- Height
- at 22,000 ft
- Aircraft
- B38M
- Turbulence
- none
- Remarks
- zdvwc
- A359 at 38,000 ft, 5 nm south, 4:13 am MDT (10:13 UTC): light chop turbulence, remarks: ZDVWC-37. 149 nm along the route, 5 nm south of the line.
as filed, and in English
GUC UA /OV HBU185015/TM 1013/FL380/TP A359/TB CONS LGT CHOP/RM ZDVWC-37
- Report
- a routine report filed through GUC
- Where
- 15 nm south (185°) of HBU
- Time
- 10:13 UTC
- Height
- at 38,000 ft
- Aircraft
- A359
- Turbulence
- continuous light chop
- Remarks
- ZDVWC-37
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 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 5 forecast points nearest it (DEN, ALS, GJT, FMN, PRC). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 8,500 ft | 220° at 22 kt | +22 kt | 7 °C | 98 kt | 4 h 28 min | 8:30 am MST (15:30 UTC) |
| 10,500 ft | 220° at 27 kt | +27 kt | 4 °C | 93 kt | 4 h 42 min | 8:44 am MST (15:44 UTC) |
| 12,500 ft | 220° at 33 kt | +33 kt | 1 °C | 87 kt | 5 h 01 min | 9:03 am MST (16:03 UTC) |
| 14,500 ft | 220° at 40 kt | +40 kt | -3 °C | 80 kt | 5 h 28 min | 9:30 am MST (16:30 UTC) |
| 16,500 ft | 220° at 47 kt | +47 kt | -7 °C | 73 kt | 5 h 59 min | 10:01 am MST (17:01 UTC) |
| 18,000 ft FL180 | 220° at 52 kt | +52 kt | -10 °C | 68 kt | 6 h 26 min | 10:28 am MST (17:28 UTC) |
| 24,000 ft FL240 | 230° at 62 kt | +62 kt | -21 °C | 58 kt | 7 h 32 min | 11:34 am MST (18:34 UTC) |
| 30,000 ft FL300 | 230° at 83 kt | +83 kt | -29 °C | 37 kt | 11 h 49 min | 3:51 pm MST (22:51 UTC) |
| 34,000 ft FL340 | 230° at 91 kt | +91 kt | -35 °C | 29 kt | 15 h 04 min | 7:06 pm MST (02:06 UTC) |
| 39,000 ft FL390 | 230° at 83 kt | +84 kt | -46 °C | 36 kt | 12 h 08 min | 4:10 pm MST (23:10 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
| Point | From | 3,000 | 6,000 | 9,000 | 12,000 | 18,000 | 24,000 | 30,000 | 34,000 | 39,000 |
|---|---|---|---|---|---|---|---|---|---|---|
| DEN | used from 0 nm out; 25 nm from the line | 270/24 11° | 230/13 5° | 230/48 -8° | 230/46 -20° | 230/63 -30° | 240/78 -36° | 240/78 -48° | ||
| ALS | used from 99 nm out; 80 nm from the line | 240/35 3° | 230/54 -9° | 240/66 -19° | 230/85 -26° | 240/87 -34° | 240/70 -47° | |||
| GJT | used from 149 nm out; 79 nm from the line | 220/26 6° | 230/39 0° | 220/55 -13° | 230/60 -23° | 230/78 -31° | 230/80 -35° | 230/74 -44° | ||
| FMN | used from 199 nm out; 46 nm from the line | 220/16 6° | 220/39 1° | 220/50 -10° | 230/67 -23° | 230/94 -29° | 230/102 -35° | 230/90 -46° | ||
| PRC | used from 348 nm out; 112 nm from the line | 200/37 6° | 200/35 0° | 220/60 -11° | 220/71 -20° | 220/88 -29° | 220/98 -35° | 220/94 -45° |
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 |
|---|---|---|---|---|---|---|---|
| DEN Denver, CO | departure | VFR | from the south-southwest (210°) at 14 knots | 10+ mi | none | 5,433 ft | 4:53 am MDT (10:53 UTC) |
| APA Denver, CO | 20 nm out, 9 nm southeast of the line, tower | VFR | from the south (170°) at 11 knots | 10+ mi | none | 5,884 ft | 10:53 UTC |
| LXV Leadville, CO | 79 nm out, 18 nm northwest of the line | VFR Sky: scattered clouds at 7,000 feet | from the south (180°) at 14 knots, gusting to 20 | 10+ mi | none | 9,933 ft | 10:53 UTC |
| GUC Gunnison, CO | 129 nm out, 5 nm west of the line | VFR Sky: a few clouds at 8,500 feet | from the north-northwest (340°) at 7 knots | 10+ mi | none | 7,679 ft | 10:56 UTC |
| TEX Telluride, CO | 189 nm out, 7 nm northwest of the line | VFR Sky: a broken layer at 4,500 feet, overcast at 5,000 feet | from the southeast (140°) at 7 knots | 10+ mi | 4,500 ft | 9,069 ft | 10:55 UTC |
| CEZ Cortez, CO | 238 nm out, 2 nm southwest of the line | VFR Sky: a broken layer at 6,500 feet, overcast at 8,000 feet | from the southwest (230°) at 8 knots | 10+ mi | 6,500 ft | 5,917 ft | 10:53 UTC |
| FLG Flagstaff, AZ | destination | marginal VFR Sky: scattered clouds at 800 feet, a broken layer at 2,300 feet, overcast at 3,400 feet Weather: light rain, mist | from the south (190°) at 15 knots, gusting to 26 | 4 mi | 2,300 ft | 7,014 ft | 3:57 am MST (10:57 UTC) |
The highest airport on this list sits at 9,933 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At FLG when you get there the forecast at the estimated arrival, 8:30 am MST (15:30 UTC)
Wind from the south-southwest at 15 knots, gusting to 25, visibility more than 6 miles, showers nearby, overcast at 2,000 feet marginal VFR
The whole forecast for FLG
- From Mon 3:00 am MST (10:00 UTC): wind from the southwest at 15 knots, gusting to 25, visibility more than 6 miles, light rain showers, a broken layer at 800 feet
- From Mon 5:00 am MST (12:00 UTC): wind from the south-southwest at 15 knots, gusting to 25, visibility more than 6 miles, showers nearby, overcast at 2,000 feet
- From Mon 11:00 am MST (18:00 UTC): wind from the southwest at 20 knots, gusting to 30, visibility 6 miles, light rain showers, overcast at 1,500 feet
- 30% chance between Mon 11:00 am MST (18:00 UTC) and 4:00 pm MST (23:00 UTC): visibility 5 miles, light thunderstorms with rain, overcast at 1,000 feet (thunderheads)
- From Mon 7:00 pm MST (02:00 UTC): wind from the southwest at 12 knots, gusting to 24, visibility more than 6 miles, light rain showers, overcast at 5,000 feet
- From Mon 10:00 pm MST (05:00 UTC): wind from the southwest at 10 knots, visibility more than 6 miles, showers nearby, overcast at 10,000 feet
The forecast for DEN, the departure
- From Mon 3:00 am MDT (09:00 UTC): wind from the south at 15 knots, visibility more than 6 miles, clear skies
- From Mon 10:00 am MDT (16:00 UTC): wind from the southwest at 14 knots, gusting to 21, visibility more than 6 miles, clear skies
- From Mon 4:00 pm MDT (22:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, clear skies
- From Mon 7:00 pm MDT (01:00 UTC): wind from the northeast at 8 knots, visibility more than 6 miles, a few clouds at 15,000 feet
- From Mon 11:00 pm MDT (05:00 UTC): wind from the north at 10 knots, visibility more than 6 miles, a few clouds at 3,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 18 nm from the route, 60 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
Daylight
Sunset at DEN 6:22 pm MDT (00:22 UTC), at FLG 5:54 pm MST (00:54 UTC) (civil twilight ends 6:19 pm MST (01:19 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: Denver International, Flagstaff Pulliam Airport.