Origin
‘Aiea, HI
Afternoon in ‘Aiea on Saturday
Local time
3:20 PM
HST
Current temp
69°F
Unavailable
Live forecast
Trip from ‘Aiea, HI to Waianae, HI
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
38m
Distance
22.9 mi
37 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$5
one way
EV Charging
Good
8 stations
Best Time to Leave
4 AM
0h 36m
★
6 AM
0h 39m
8 AM
0h 45m
10 AM
0h 41m
12 PM
0h 41m
3 PM
0h 42m
5 PM
0h 45m
8 PM
0h 37m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
‘Aiea, HI
Studio Lichtfang
Waianae, HI
Wikimedia Commons
Trip Overview
Traveling from ‘Aiea to Waianae covers 22.9 miles of Oʻahu, making it a straightforward journey that easily fits into a single day. You can expect to spend about 38 minutes behind the wheel, navigating a mix of local roads and major thoroughfares. Because the trip is short and efficient, there is no need to plan for an overnight stay. With a fuel budget of approximately $5, this route is an affordable way to transition between these two Hawaiian locations. It is a practical, no-fuss drive that serves as a direct link across the region.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Farrington Highway | 10.2 mi | 20m |
| Queen Liliʻuokalani Freeway | 8.6 mi | 10m |
| Kamehameha Highway | 3.3 mi | 5m |
| Honomanu Street | 0.2 mi | <1m |
| Moanalua Road | 0.1 mi | <1m |
Longest stretch:
Farrington Highway
— 10.2 mi, about 20m
Turn-by-Turn Driving Directions
Step-by-step road directions between ‘Aiea, HI and Waianae, HI.
1
Start on this road
338 ft
·
24 sec
·
this road
2
Turn right onto Moanalua Road
0.1 mi
·
21 sec
·
Moanalua Road
3
Turn left onto Honomanu Street
0.2 mi
·
26 sec
·
Honomanu Street
Use the left lane.
4
Turn right onto HI 99
2.9 mi
·
4 min
·
Kamehameha Highway
Use the right lane.
5
Keep slight right at fork onto Kamehameha Highway
0.5 mi
·
47 sec
·
Kamehameha Highway
Use the right lane.
6
Take the ramp
196 ft
·
4 sec
Toward I H1 West, I H2 North: Waianae, Mililani, Wahiawa
7
Keep slight left at fork
0.4 mi
·
32 sec
Toward I H1 West: Waianae
8
Merge onto I H1
8.6 mi
·
10 min
·
Queen Liliʻuokalani Freeway
Use the straight / slight right lanes.
9
Continue on HI 93
10 mi
·
20 min
·
Farrington Highway
10
Arrive at destination
HI 93
Heads-up: tricky spots
5 of 75 decision points cluster between mile 0.2 and 4.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0.2 mi into trip
|
~0m in
|
Honomanu Street
Turn left onto Honomanu Street
Lane positioning matters here
Use the left lane.
5
0.3 mi into trip
|
~1m in
|
HI 99 / Kamehameha Highway
Turn right onto HI 99 / Kamehameha Highway
Lane positioning matters here
Use the right lane.
6
3.2 mi into trip
|
~5m in
|
Kamehameha Highway
Keep slight right at fork onto Kamehameha Highway
Highway fork - watch signs carefully. Lane positioning matters here
Use the right lane.
5
3.7 mi into trip
|
~6m in
Keep slight left at fork toward I H1 West: Waianae
Highway fork - watch signs carefully
Toward I H1 West: Waianae
5
4.1 mi into trip
|
~7m in
|
I H1 / Queen Liliʻuokalani Freeway
Merge onto I H1 / Queen Liliʻuokalani Freeway
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
Fuel & Cost
Regular Gas
$4.96 one way
$9.93 round trip
$5.51/gal
25.4 MPG avg
8 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $5.79 | $5.22 | $10.44 |
| premium | $5.98 | $5.39 | $10.78 |
| diesel | $5.61 | $5.06 | $10.11 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$5
Estimated CO2 emission: 8 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $2 in charging · 0 stops · 63% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 6.9 | 0 | $2.40 | $1.10 |
| Efficient EV | 5.7 | 0 | $2.00 | $0.92 |
| EV Truck/SUV | 9.2 | 0 | $3.21 | $1.47 |
Gas CO2
8 kg
EV CO2
3 kg (63% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
Waianae, HI
Afternoon in Waianae on Saturday
Local time
3:20 PM
HST
Current temp
82°F
Partly Sunny then Chance Rain Showers
W 1 to 7 mph
27% chance
Live forecast
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
13 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
38m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
What kind of drive is this?
This drive offers a mixed-road experience, balancing faster freeway segments with local highway travel. You will spend about 37% of your time on highways, utilizing the Queen Liliʻuokalani Freeway and Kamehameha Highway to make progress. The transition to Farrington Highway provides the longest uninterrupted stretch of the trip at 10.2 miles. Expect the personality of the road to shift as you move from the busier corridors near ‘Aiea toward the coastal feel of the Waianae area. Navigating these varied road types ensures the 38-minute duration stays engaging without becoming a monotonous grind.
37% highway, the rest on surface roads — varied driving throughout.
10 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 10.2 mi on Farrington Highway.
How Hard Is This Drive?
6/10
This route mixes highway mileage with some local-road sections near the start or finish. You will hit about 7 points where you need to pay attention to lane position or signs. The trickiest moment comes around 0.2 miles in near Honomanu Street.
Driving Effort
6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 22.9 miles you will encounter 7 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 0.2 miles (Honomanu Street): Lane positioning matters here; at 0.3 miles (HI 99 / Kamehameha Highway): Lane positioning matters here; at 3.2 miles (Kamehameha Highway): Highway fork - watch signs carefully. Lane positioning matters here.
Elevation Profile
Mostly flat terrain
250 ft
13 ft
Total Climb
243 ft
Total Descent
317 ft
Highest Point
250 ft
~9.8 mi in
Elevation Range
237 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between ‘Aiea, HI and Waianae, HI, road signs point toward I H1 West, I H2 North: Waianae, Mililani, Wahiawa and I H1 West: Waianae.
I H1 West
3.7 mi in
|
~6m
I H2 North: Waianae
3.7 mi in
|
~6m
Mililani
3.7 mi in
|
~6m
Wahiawa
3.7 mi in
|
~6m
I H1 West: Waianae
3.7 mi in
|
~6m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 38m. Total distance: 22.9 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
38m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (37%). Some complex stretches to watch for.
Scenic Drive
Mixed highway & surface route profile.
Frequently Asked Questions
The longest stretch is about 10.2 miles on Farrington Highway. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Waianae, HI before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 0.2 miles (Honomanu Street): Lane positioning matters here; at 0.3 miles (HI 99 / Kamehameha Highway): Lane positioning matters here; at 3.2 miles (Kamehameha Highway): Highway fork - watch signs carefully. Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Waianae, HI before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and USGS 3DEP for elevation. See our methodology for refresh cadence and limitations.
Was this helpful?
Thanks for your feedback!
Your tip has been submitted. Thanks!
/500
Recent Tips
·
Explore More
Continue From Waianae, HI
More from ‘Aiea, HI
More trips to Waianae, HI
Explore more options from ‘Aiea, HI or browse trips ending in Waianae, HI.
Looking for more statewide routes? Browse HI road trips.