Plan a flight · Sun 8:05 pm CDT (01:05 UTC)

Chicago O'Hare International to Mahlon Sweet Field ORD → EUG

1,542 nautical miles (1,775 statute miles) west on a straight line, true course 287°, about 290° magnetic at the departure end (variation 3W). At 120 knots that is 12 h 45 min at the quickest height in today's winds (4,500 ft, a 1-knot tailwind), arriving about 6:50 am PDT (13:50 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: 191 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 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 567 to 1194 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 677 to 1264 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 826 to 1035 nm out.
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 846 to 1015 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 846 to 1483 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 1035 to 1075 nm out.
AIRMET ZULU 2C: moderate icing up to 14,000 ft. Over the route from 1284 to 1463 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 25,000 ft to 39,000 ft. 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 ORD.

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

B738 at 33,000 ft, 8 nm south, 6:57 pm CDT (23:57 UTC): moderate chop turbulence from 31,000 ft to 33,000 ft. 1055 nm along the route, 8 nm south of the line.
as filed, and in English
```
IDA UA /OV DBS015030/TM 2357/FL330/TP B738/TB MOD CHOP 310-330 /ZLC
```
Report
a routine report filed through IDA
Where
30 nm north (015°) of DBS
Time
23:57 UTC
Height
at 33,000 ft
Aircraft
B738
Turbulence
moderate chop from 31,000 ft to 33,000 ft zlc
B39M at 35,000 ft, 32 nm southeast, 7:29 pm CDT (00:29 UTC): no turbulence, remarks: smooth. At the departure end, 32 nm southeast of the line.
as filed, and in English
```
IKK UA /OV CGT/TM 0029/FL350/TP B39M/TB NEG/RM SMOOTH
```
Report
a routine report filed through IKK
Where
over CGT
Time
00:29 UTC
Height
at 35,000 ft
Aircraft
B39M
Turbulence
none
Remarks
smooth
CRJ7 at 17,000 ft, 41 nm east, 7:04 pm CDT (00:04 UTC): no turbulence. At the departure end, 41 nm east of the line.
as filed, and in English
```
BEH UA /OV ELX270040/TM 0004/FL170/TP CRJ7/TB NEG
```
Report
a routine report filed through BEH
Where
40 nm west (270°) of ELX
Time
00:04 UTC
Height
at 17,000 ft
Aircraft
CRJ7
Turbulence
none
BE20 at 14,000 ft, 36 nm north, 7:20 pm CDT (00:20 UTC): light turbulence. 418 nm along the route, 36 nm north of the line.
as filed, and in English
```
FSD UA /OV FSD340035/TM 0020/FL140/TP BE20/TB CONS LGT/ NEG 120
```
Report
a routine report filed through FSD
Where
35 nm north (340°) of FSD
Time
00:20 UTC
Height
at 14,000 ft
Aircraft
BE20
Turbulence
continuous light no at 12,000 ft
PC12 at 100 ft, 23 nm north, 5:34 pm CDT (22:34 UTC): no icing. 557 nm along the route, 23 nm north of the line.
as filed, and in English
```
PIR UA /OV PIR/TM 2234/FL001/TP PC12/SK BASE030-TOP045/IC NEG
```
Report
a routine report filed through PIR
Where
over PIR
Time
22:34 UTC
Height
at 100 ft
Aircraft
PC12
Sky
BASE030-TOP045
Icing
none
A21N at 35,000 ft, 7 nm south, 5:47 pm CDT (22:47 UTC): no turbulence, remarks: ZDVWC-32. 786 nm along the route, 7 nm south of the line.
as filed, and in English
```
GCC UA /OV GCC/TM 2247/FL350/TP A21N/TB NEG /RM ZDVWC-32
```
Report
a routine report filed through GCC
Where
over GCC
Time
22:47 UTC
Height
at 35,000 ft
Aircraft
A21N
Turbulence
none
Remarks
ZDVWC-32
BE9T at 17,500 ft, 19 nm south, 5:40 pm CDT (22:40 UTC): no turbulence, light icing, -6 °C, remarks: ZDVWC-22. 816 nm along the route, 19 nm south of the line.
as filed, and in English
```
GCC UA /OV CZI020012/TM 2240/FL175/TP BE9T/TA M06/TB NEG/IC LGT MIX /RM ZDVWC-22
```
Report
a routine report filed through GCC
Where
12 nm north (020°) of CZI
Time
22:40 UTC
Height
at 17,500 ft
Aircraft
BE9T
Temperature
−6 °C
Turbulence
none
Icing
light mix
Remarks
ZDVWC-22
E75L at 11,000 ft, 9 nm south, 7:36 pm CDT (00:36 UTC): trace to light rime icing from 10,500 ft to 11,500 ft, -8 °C, remarks: durc-zse. 1443 nm along the route, 9 nm south of the line.
as filed, and in English
```
RDM UA /OV DSD090015/TM 0036/FL110/TP E75L/TA M08/IC TRACE-LGT RIME 105-115/RM DURC-ZSE
```
Report
a routine report filed through RDM
Where
15 nm east (090°) of DSD
Time
00:36 UTC
Height
at 11,000 ft
Aircraft
E75L
Temperature
−8 °C
Icing
trace-lgt rime from 10,500 ft to 11,500 ft
Remarks
durc-zse
E175 at 6,500 ft, 3 nm south, 7:28 pm CDT (00:28 UTC): a broken layer above 6,500 ft. 1453 nm along the route, 3 nm south of the line.
as filed, and in English
```
RDM UA /OV RDM/TM 0028/FL065/TP E175/SK BKN065-TOPSUNKN
```
Report
a routine report filed through RDM
Where
over RDM
Time
00:28 UTC
Height
at 6,500 ft
Aircraft
E175
Sky
a broken layer from 6,500 ft, tops unknown
E75L at 9,500 ft, 3 nm south, 6:07 pm CDT (23:07 UTC): light rime icing from 7,000 ft to 9,500 ft, a broken layer above 7,300 ft, -2 °C, remarks: during the descent runway 5. 1453 nm along the route, 3 nm south of the line.
as filed, and in English
```
RDM UA /OV RDM/TM 2307/FL095/TP E75L/SK BKN073-TOPSUNKN/TA M2/IC LGT RIME 095-070/RM DURD RWY 5
```
Report
a routine report filed through RDM
Where
over RDM
Time
23:07 UTC
Height
at 9,500 ft
Aircraft
E75L
Sky
a broken layer from 7,300 ft, tops unknown
Temperature
−2 °C
Icing
light rime from 9,500 ft to 7,000 ft
Remarks
during the descent runway 5
E75L at 9,000 ft, 15 nm south, 6:05 pm CDT (23:05 UTC): light rime icing, -6 °C, remarks: zse. 1463 nm along the route, 15 nm south of the line.
as filed, and in English
```
RDM UA /OV DSD155012/TM 2305/FL090/TP E75L/TA M06/IC LGT RIME/RM ZSE
```
Report
a routine report filed through RDM
Where
12 nm southeast (155°) of DSD
Time
23:05 UTC
Height
at 9,000 ft
Aircraft
E75L
Temperature
−6 °C
Icing
light rime
Remarks
zse

Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 11 forecast points nearest it (JOT, DBQ, MCW, FSD, PIR, RAP, MLS, BIL, DLN, BOI, RDM). 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 4 kt	−1 kt	7 °C	121 kt	12 h 45 min	6:50 am PDT (13:50 UTC)
6,500 ft	230° at 4 kt	+1 kt	10 °C	119 kt	12 h 57 min	7:02 am PDT (14:02 UTC)
8,500 ft	210° at 6 kt	+2 kt	5 °C	118 kt	13 h 04 min	7:09 am PDT (14:09 UTC)
10,500 ft	220° at 9 kt	+4 kt	2 °C	116 kt	13 h 18 min	7:23 am PDT (14:23 UTC)
12,500 ft	230° at 12 kt	+7 kt	-1 °C	113 kt	13 h 39 min	7:44 am PDT (14:44 UTC)
14,500 ft	230° at 14 kt	+9 kt	-5 °C	111 kt	13 h 54 min	7:59 am PDT (14:59 UTC)
16,500 ft	230° at 16 kt	+11 kt	-9 °C	109 kt	14 h 09 min	8:14 am PDT (15:14 UTC)
18,000 ft FL180	240° at 17 kt	+13 kt	-12 °C	107 kt	14 h 25 min	8:30 am PDT (15:30 UTC)
24,000 ft FL240	240° at 26 kt	+21 kt	-22 °C	99 kt	15 h 35 min	9:40 am PDT (16:40 UTC)
30,000 ft FL300	240° at 33 kt	+27 kt	-35 °C	93 kt	16 h 35 min	10:40 am PDT (17:40 UTC)
34,000 ft FL340	250° at 44 kt	+40 kt	-41 °C	80 kt	19 h 16 min	1:21 pm PDT (20:21 UTC)
39,000 ft FL390	250° at 53 kt	+51 kt	-47 °C	69 kt	22 h 21 min	4:26 pm PDT (23:26 UTC)

Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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
JOT	used from 0 nm out; 37 nm from the line	230/11	290/12 16°	300/19 10°	320/19 4°	300/17 -9°	330/31 -20°	320/49 -37°	320/53 -45°	320/67 -49°
DBQ	used from 50 nm out; 53 nm from the line	220/23	240/22 16°	240/24 10°	260/18 5°	270/16 -8°	290/27 -19°	310/42 -35°	320/55 -44°	300/71 -52°
MCW	used from 199 nm out; 27 nm from the line	200/35	240/33 18°	250/20 10°	260/10 6°	270/18 -8°	260/28 -19°	280/30 -34°	290/49 -43°	280/70 -54°
FSD	used from 348 nm out; 28 nm from the line	200/16	220/20 17°	240/26 13°	230/19 6°	240/25 -9°	240/28 -20°	250/39 -33°	250/44 -43°	260/63 -52°
PIR	used from 498 nm out; 43 nm from the line		L/V 17°	230/13 12°	220/22 6°	250/31 -9°	250/34 -21°	240/50 -35°	230/61 -43°	240/62 -51°
RAP	used from 597 nm out; 55 nm from the line		120/15 12°	180/22 11°	220/26 5°	230/35 -9°	240/40 -22°	240/50 -37°	240/51 -41°	240/47 -47°
MLS	used from 796 nm out; 118 nm from the line		120/22 5°	170/18 4°	200/33 1°	230/49 -10°	230/58 -21°	220/54 -37°	230/64 -44°	250/74 -49°
BIL	used from 846 nm out; 86 nm from the line		080/24	130/14 -1°	180/33 0°	210/43 -10°	220/58 -21°	200/55 -36°	220/75 -44°	240/83 -48°
DLN	used from 995 nm out; 74 nm from the line			080/10 -3°	180/8 -3°	180/23 -14°	200/58 -22°	200/80 -36°	220/85 -41°	230/81 -45°
BOI	used from 1194 nm out; 66 nm from the line		330/14 4°	230/5 -2°	220/20 -7°	210/37 -20°	200/59 -26°	200/67 -34°	210/73 -35°	220/62 -41°
RDM	used from 1343 nm out; 85 nm from the line		010/15 -2°	030/21 -8°	020/26 -12°	020/46 -22°	010/72 -27°	360/47 -34°	340/31 -35°	320/20 -40°

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	Elevation
ORD Chicago, IL	departure	no report just now	680 ft
RFD Chicago/Rockford, IL	50 nm out, 5 nm west of the line, tower	no report just now	742 ft
ALO Waterloo, IA	199 nm out, 19 nm south of the line, tower	no report just now	873 ft
FSD Sioux Falls, SD	398 nm out, 3 nm west of the line, tower	no report just now	1,430 ft
PIR Pierre, SD	557 nm out, 22 nm north of the line	no report just now	1,744 ft
RAP Rapid City, SD	677 nm out, 14 nm south of the line, tower	no report just now	3,203 ft
GEY Greybull, WY	896 nm out, 4 nm southeast of the line	no report just now	3,941 ft
WYS West Yellowstone, MT	1025 nm out, 3 nm northeast of the line	no report just now	6,649 ft
LLJ Challis, ID	1154 nm out, 7 nm south of the line	no report just now	5,075 ft
GCD John Day, OR	1363 nm out, 5 nm southeast of the line	no report just now	3,702 ft
RDM Redmond, OR	1453 nm out, 3 nm south of the line, tower	no report just now	3,081 ft
EUG Eugene, OR	destination	no report just now	373 ft

The highest airport on this list sits at 6,649 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At EUG when you get there the forecast at the estimated arrival, 6:50 am PDT (13:50 UTC)

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

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 ORD 6:15 pm CDT (23:15 UTC), at EUG 6:34 pm PDT (01:34 UTC) (civil twilight ends 7:03 pm PDT (02:03 UTC)). At 120 knots the arrival at EUG is before sunrise there (7:23 am PDT (14:23 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 upper Mississippi valley · loop National Weather Service

Radar now, the northern Rockies · loop National Weather Service

Radar now, the Pacific Northwest · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

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: Chicago O'Hare International, Mahlon Sweet Field.