Plan a flight · Sun 8:13 pm CDT (01:13 UTC)

Houston County to Akiachak Seaplane Base CHU → KKI

2,622 nautical miles (3,017 statute miles) northwest on a straight line, true course 319°, about 318° magnetic at the departure end (variation 1E). At 120 knots that is 21 h 09 min at the quickest height in today's winds (10,500 ft, a 4-knot tailwind), arriving about 2:22 pm AKDT (22:22 UTC). 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: 4 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 269 to 429 nm out.
AIRMET ZULU 4C: moderate icing up to 20,000 ft. Over the route from 299 to 449 nm out.

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 CHU.

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

B39M at 34,000 ft, 42 nm southwest, 6:25 pm CDT (23:25 UTC): light chop turbulence. 120 nm along the route, 42 nm southwest of the line.
as filed, and in English
```
MSP UA /OV MSP240040/TM 2325/FL340/TP B39M/TB LGT CHOP
```
Report
a routine report filed through MSP
Where
40 nm southwest (240°) of MSP
Time
23:25 UTC
Height
at 34,000 ft
Aircraft
B39M
Turbulence
light chop
CRJ7 at 18,000 ft, 6 nm west, 6:41 pm CDT (23:41 UTC): light rime icing from 18,000 ft to 20,000 ft, -13 °C, remarks: during the descent. 249 nm along the route, 6 nm west of the line.
as filed, and in English
```
FAR UA /OV FAR090050/TM 2341/FL180/TP CRJ7/SK BASE180-TOP200/TA M13/IC LGT RIME 180-200/RM DURD
```
Report
a routine report filed through FAR
Where
50 nm east (090°) of FAR
Time
23:41 UTC
Height
at 18,000 ft
Aircraft
CRJ7
Sky
BASE180-TOP200
Temperature
−13 °C
Icing
light rime from 18,000 ft to 20,000 ft
Remarks
during the descent
E170 at 6,000 ft, 35 nm southwest, 5:18 pm CDT (22:18 UTC): remarks: during the descent runway 36. 289 nm along the route, 35 nm southwest of the line.
as filed, and in English
```
FAR UA /OV FAR/TM 2218/FL060/TP E170/SK TOP060-OVC014/RM DURD RWY 36
```
Report
a routine report filed through FAR
Where
over FAR
Time
22:18 UTC
Height
at 6,000 ft
Aircraft
E170
Sky
TOP060-OVC014
Remarks
during the descent runway 36
A320 descending, 27 nm southwest, 8:01 pm CDT (01:01 UTC): overcast above 1,200 ft, remarks: during the descent runway 36. 299 nm along the route, 27 nm southwest of the line.
as filed, and in English
```
FAR UA /OV KFAR/TM 0101/FLUNKN/TP A320/SK OVC012-TOPUNKN/RM DURD RWY 36
```
Report
a routine report filed through FAR
Where
over KFAR
Time
01:01 UTC
Height
height not given
Aircraft
A320
Sky
overcast from 1,200 ft, tops unknown
Remarks
during the descent runway 36
C56X at 1,300 ft, 27 nm southwest, 6:17 pm CDT (23:17 UTC): overcast above 1,300 ft. 299 nm along the route, 27 nm southwest of the line.
as filed, and in English
```
FAR UA /OV KFAR/TM 2317/FL013/TP C56X/SK OVC013
```
Report
a routine report filed through FAR
Where
over KFAR
Time
23:17 UTC
Height
at 1,300 ft
Aircraft
C56X
Sky
overcast from 1,300 ft
CRJ7 at 5,000 ft, 2 nm east, 8:02 pm CDT (01:02 UTC): overcast from 1,500 ft to 4,800 ft, 11 °C, remarks: during the climb. 349 nm along the route, 2 nm east of the line.
as filed, and in English
```
GFK UA /OV GFK170008/TM 0102/FL050/TP CRJ7/SK OVC015-TOP048/TA 11/RM DURC
```
Report
a routine report filed through GFK
Where
8 nm south (170°) of GFK
Time
01:02 UTC
Height
at 5,000 ft
Aircraft
CRJ7
Sky
overcast from 1,500 ft, tops 4,800 ft
Temperature
11 °C
Remarks
during the climb
CRJ7 at 1,500 ft, 9 nm northeast, 7:01 pm CDT (00:01 UTC): overcast above 1,500 ft. 349 nm along the route, 9 nm northeast of the line.
as filed, and in English
```
GFK UA /OV GFK090002/TM 0001/FL015/TP CRJ7/SK OVC015
```
Report
a routine report filed through GFK
Where
2 nm east (090°) of GFK
Time
00:01 UTC
Height
at 1,500 ft
Aircraft
CRJ7
Sky
overcast from 1,500 ft
PC12 at 1,500 ft, 9 nm east, 6:45 pm CDT (23:45 UTC): overcast above 1,500 ft, 6 °C. 359 nm along the route, 9 nm east of the line.
as filed, and in English
```
GFK UA /OV GFK350001/TM 2345/FL015/TP PC12/SK OVC015/TA 06
```
Report
a routine report filed through GFK
Where
1 nm north (350°) of GFK
Time
23:45 UTC
Height
at 1,500 ft
Aircraft
PC12
Sky
overcast from 1,500 ft
Temperature
6 °C
B789 at 37,000 ft, 30 nm northeast, 6:10 pm CDT (23:10 UTC): light chop turbulence. 389 nm along the route, 30 nm northeast of the line.
as filed, and in English
```
GFK UA /OV GFK340040/TM 2310/FL370/TP B789/TB LGT CHOP
```
Report
a routine report filed through GFK
Where
40 nm north (340°) of GFK
Time
23:10 UTC
Height
at 37,000 ft
Aircraft
B789
Turbulence
light chop
B737 at 3,500 ft, 48 nm south, 6:07 pm CDT (23:07 UTC): light chop turbulence, no icing, remarks: during the climb zan. 2153 nm along the route, 48 nm south of the line.
as filed, and in English
```
CDV UA /OV CDV/TM 2307/FL035/TP B737/SK TOP 035/TB LGT CHOP/IC NEG/RM DURC ZAN
```
Report
a routine report filed through CDV
Where
over CDV
Time
23:07 UTC
Height
at 3,500 ft
Aircraft
B737
Sky
top 3,500 ft
Turbulence
light chop
Icing
none
Remarks
during the climb zan
B737 at 14,000 ft, 17 nm south, 5:45 pm CDT (22:45 UTC): light rime icing up to 14,000 ft, remarks: during the descent peter arrival. 2273 nm along the route, 17 nm south of the line.
as filed, and in English
```
ANC UA /OV TED090015/TM 2245/FL140/TP B737/IC LGT RIME 140 BLO/RM DURD PETER ARR
```
Report
a routine report filed through ANC
Where
15 nm east (090°) of TED
Time
22:45 UTC
Height
at 14,000 ft
Aircraft
B737
Icing
light rime at 14,000 ft below
Remarks
during the descent peter arrival
BE20 at 2,000 ft, 10 nm south, 7:48 pm CDT (00:48 UTC): no turbulence, no icing. 2283 nm along the route, 10 nm south of the line.
as filed, and in English
```
MRI UA /OV MRI/TM 0048/FL020/TP BE20/WX FV20SM/TB NEG/IC NEG
```
Report
a routine report filed through MRI
Where
over MRI
Time
00:48 UTC
Height
at 2,000 ft
Aircraft
BE20
Weather
flight visibility 20 miles
Turbulence
none
Icing
none
B737 at 5,000 ft, 17 nm south, 6:30 pm CDT (23:30 UTC): no turbulence, no icing, remarks: during the descent gasto. 2293 nm along the route, 17 nm south of the line.
as filed, and in English
```
ANC UA /OV TED230010/TM 2330/FL050/TP B737/TB NEG/IC NEG/RM DURD GASTO
```
Report
a routine report filed through ANC
Where
10 nm southwest (230°) of TED
Time
23:30 UTC
Height
at 5,000 ft
Aircraft
B737
Turbulence
none
Icing
none
Remarks
during the descent gasto
C207 at 1,000 ft, 10 nm southeast, 6:08 pm CDT (23:08 UTC): no turbulence. 2293 nm along the route, 10 nm southeast of the line.
as filed, and in English
```
MRI UA /OV MRI260003/TM 2308/FL010/TP C207/TB NEG
```
Report
a routine report filed through MRI
Where
3 nm west (260°) of MRI
Time
23:08 UTC
Height
at 1,000 ft
Aircraft
C207
Turbulence
none

5 more routine reports are on the map.

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 8 forecast points nearest it (LSE, MSP, AXN, GFK, MOT, GGW, GPI, SEA). 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	040° at 6 kt	−3 kt	0 °C	123 kt	21 h 19 min	2:32 pm AKDT (22:32 UTC)
6,500 ft	020° at 4 kt	−2 kt	2 °C	122 kt	21 h 30 min	2:43 pm AKDT (22:43 UTC)
8,500 ft	030° at 1 kt	−3 kt	-1 °C	123 kt	21 h 19 min	2:32 pm AKDT (22:32 UTC)
10,500 ft	020° at 2 kt	−4 kt	-4 °C	124 kt	21 h 09 min	2:22 pm AKDT (22:22 UTC)
12,500 ft	010° at 4 kt	−4 kt	-7 °C	124 kt	21 h 09 min	2:22 pm AKDT (22:22 UTC)
14,500 ft	360° at 7 kt	−4 kt	-10 °C	124 kt	21 h 09 min	2:22 pm AKDT (22:22 UTC)
16,500 ft	350° at 11 kt	−4 kt	-13 °C	124 kt	21 h 09 min	2:22 pm AKDT (22:22 UTC)
18,000 ft FL180	350° at 14 kt	−3 kt	-15 °C	123 kt	21 h 19 min	2:32 pm AKDT (22:32 UTC)
24,000 ft FL240	330° at 27 kt	+5 kt	-24 °C	115 kt	22 h 48 min	4:01 pm AKDT (00:01 UTC)
30,000 ft FL300	310° at 35 kt	+17 kt	-38 °C	103 kt	25 h 27 min	6:40 pm AKDT (02:40 UTC)
34,000 ft FL340	300° at 31 kt	+16 kt	-44 °C	104 kt	25 h 13 min	6:26 pm AKDT (02:26 UTC)
39,000 ft FL390	280° at 34 kt	+21 kt	-47 °C	99 kt	26 h 29 min	7:42 pm AKDT (03:42 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
LSE	used from 0 nm out; 27 nm from the line	220/33	250/29 17°	250/15 9°	260/12 6°	280/21 -9°	280/33 -20°	300/43 -36°	310/56 -45°	300/79 -53°
MSP	used from 50 nm out; 32 nm from the line	200/28	240/30 19°	240/24 12°	240/17 5°	270/24 -10°	270/33 -20°	280/48 -35°	290/55 -45°	280/84 -54°
AXN	used from 150 nm out; 48 nm from the line	L/V	220/23 17°	230/24 12°	240/25 5°	260/32 -11°	260/40 -21°	270/50 -35°	270/57 -45°	270/81 -55°
GFK	used from 299 nm out; 30 nm from the line	050/18	L/V 10°	240/20 7°	240/36 1°	250/47 -11°	260/53 -21°	270/59 -36°	270/65 -47°	260/88 -56°
MOT	used from 449 nm out; 92 nm from the line		070/8 6°	180/7 2°	220/18 -1°	240/37 -11°	250/55 -20°	250/64 -36°	250/70 -46°	250/80 -54°
GGW	used from 698 nm out; 240 nm from the line		090/18 0°	140/12 -2°	150/13 -3°	200/35 -12°	230/56 -22°	240/75 -37°	240/81 -46°	240/78 -49°
GPI	used from 997 nm out; 413 nm from the line		060/19 -3°	110/11 -8°	130/6 -8°	200/40 -19°	190/58 -28°	200/101 -39°	220/73 -43°	230/41 -43°
SEA	used from 1396 nm out; 644 nm from the line	360/9	350/10 1°	010/10 -5°	030/20 -11°	020/60 -17°	010/86 -26°	360/90 -40°	010/68 -42°	360/31 -43°

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
CHU Caledonia, MN	departure	no report just now				1,179 ft
MIC Minneapolis, MN	120 nm out, 1 nm southeast of the line, tower	VFR	from the south (170°) at 6 knots	10+ mi	none	869 ft	00:53 UTC
GFK Grand Forks, ND	349 nm out, 8 nm north of the line, tower	IFR Sky: overcast at 700 feet Weather: mist	from the north (360°) at 15 knots, gusting to 20	6 mi	700 ft	845 ft	00:53 UTC
CYZW Teslin,	1784 nm out, 5 nm southeast of the line	VFR Sky: overcast at 5,300 feet	from the south (190°) at 10 knots	30 mi	5,300 ft	2,313 ft	00:00 UTC
CYXY Whitehorse,	1854 nm out, 11 nm north of the line, tower	VFR Sky: a few clouds at 4,000 feet, a broken layer at 5,900 feet, overcast at 10,000 feet	from the south-southeast (150°) at 11 knots, gusting to 18	40 mi	5,900 ft	2,317 ft	01:00 UTC
MRI Anchorage, AK	2283 nm out, 10 nm south of the line, tower	VFR Sky: overcast at 4,600 feet	from the north-northeast (020°) at 4 knots	10+ mi	4,600 ft	143 ft	00:53 UTC
TLT Tuluksak, AK	2602 nm out, 9 nm northwest of the line	no report just now				35 ft
KKI Akiachak, AK	destination	no report just now				18 ft

The highest airport on this list sits at 2,317 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At KKI when you get there the forecast at the estimated arrival, 2:22 pm AKDT (22:22 UTC)

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

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

6/6656 ANOKA, MN, Monday, October 5, 2026 through Monday, October 19, 2026 Local 6 nm from the route, 130 nm along the route · security · until 19 October · ZMP
6/4348 GRAND FORKS AFB, ND, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local on the route, 359 nm along the route · security · until 1 November · ZMP
6/8889 Anchorage, AK, Tuesday, October 13, 2026 through Tuesday, October 13, 2026 Local on the route, 2263 nm along the route · a VIP movement · starts tomorrow · ZAN
6/8772 Anchorage, AK, Tuesday, October 13, 2026 through Tuesday, October 13, 2026 Local 6 nm from the route, 2283 nm along the route · security · starts tomorrow · ZAN

Daylight

Sunset at CHU 6:28 pm CDT (23:28 UTC), at KKI 7:43 pm AKDT (03:43 UTC) (civil twilight ends 8:26 pm AKDT (04:26 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, Alaska · 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: Houston County, Akiachak Seaplane Base.