Product info
Hawaii eSIM plans
| Unlimited data · 5 days | $17.99 | Buy eSIM |
| Ohayu recommendsUnlimited data · 10 days | $33.99 | Buy eSIM |
| Unlimited data · 15 days | $39.99 | Buy eSIM |
| 3GB prepaid eSIM · 14 days | $8.49$2.83 / GB | Buy eSIM |
| 5GB prepaid eSIM · 30 days | $13.49$2.70 / GB | Buy eSIM |
| 10GB prepaid eSIM · 30 days | $21.49$2.15 / GB | Buy eSIM |
| 15GB prepaid eSIM · 60 days | $27.79$1.85 / GB | Buy eSIM |
| 20GB prepaid eSIM · 90 days | $34.49$1.72 / GB | Buy eSIM |
| 50GB prepaid eSIM · 90 days | $73.49$1.47 / GB | Buy eSIM |
You can install your eSIM before the trip and activate it when you arrive in United States. Validity starts after eSIM activation.
Plan details
How much mobile data you need
What's the best eSIM for Hawaii?
Hawaii weekend – 3 GB
Enough for Maps, beach spot searches, and posts from Waikiki.
One to two weeks – 10 GB
Maps, messages, occasional video. Covers Oahu, Maui, or the Big Island.
Island hopping – 20 GB
Fly between islands on one US eSIM. Covers all of Hawaii.
Remote work – Unlimited
Hotspot for your laptop, video calls from a Honolulu cafe.
Coverage and network
Honest about coverage
United States mobile networks
The US ranks 10th globally for mobile download speed at 197 Mbps - twice Canada (98 Mbps) and 3× Japan (68 Mbps), where many Hawaii visitors come from. All three US carriers cover Oahu and Maui; remote areas and smaller islands have less infrastructure. (Speedtest by Ookla, June 2026)
Speedtest Global Index · Mobile · United States · June 2026
Download
197.34 Mbps
Upload
10.35 Mbps
Latency
27 ms
Global rank
#10 of 98
Real Hawaii conditions
- Remote valleys & north shores: Hawaii's dramatic terrain means signal can drop quickly once you leave paved roads. The Na Pali Coast, Waimanu Valley, and similar remote areas have little to no coverage. Download offline maps before heading into wilderness areas.
- Active volcano zones: Hawaii Volcanoes National Park on the Big Island has limited coverage in remote lava fields and lower-elevation areas near Kilauea. The visitor centre and main access roads typically maintain some signal.
- Inter-island travel: The eSIM covers all Hawaiian islands since they're part of the US national network, but coverage quality varies by island. Molokai and Lanai have fewer towers and more limited signal compared to Oahu and Maui.
One eSIM, all of the US
This plan covers the entire United States, including all Hawaiian islands. The same eSIM works whether you fly back to the mainland or hop between islands during your stay.
How to install eSIM
Connected in 3 steps
- 01
Buy before you fly
Choose your data plan before your trip.
- 02
Download & install
Log in to your account, tap your eSIM, and follow the on-screen instructions.
- 03
Land & activate
Activate when you arrive in United States. Turn on roaming for the eSIM and it connects to a local network.
Before you buy, make sure your phone supports eSIM — see Ohayu compatible devices list or dial *#06#. It's a free request to your phone's settings. If you see the EID number — your phone is eSIM-compatible.
Arriving in Hawaii
Free Wi-Fi in Hawaii
If it is still not installed, honolulu Airport has free unlimited Wi-Fi across all terminals.
Side by side
Hawaii eSIM Comparison
Indicative comparison based on publicly listed USA plans as of May 6th, 2026. Competitor pricing and policies change - check their sites for current terms.
Frequently asked questions
Where to buy a SIM card in Hawaii?
At Honolulu (HNL) there's a Hawaii SIM Card kiosk right past US Customs in the international arrivals area, selling T-Mobile and Verizon prepaid plans from ~$35. One thing to know: it closes at 1:00 PM. Most transpacific flights arrive in the afternoon or evening, so you'll likely find it shut. Maui (OGG), Kona (KOA) and Kauai (LIH) are small airports with no confirmed SIM retail. Hawaii runs on standard US networks, so a travel eSIM like Ohayu works on all islands - install before your flight and after landing it can connect you to supported networks like T-Mobile or AT&T.
Any ID required for a prepaid SIM?
None. The US does not register prepaid lines, in Hawaii or anywhere else, and buying an eSIM requires no identity check. Worth knowing before a long flight - there is nothing to arrange on arrival.
Why isn't my eSIM working in Hawaii?
On the Road to Hana or in a valley on Kauai there are long unserved stretches. Failing that, the fix is usually in your SIM settings: Ohayu as the data line, roaming enabled, then an Airplane mode cycle. If that does not do it, chat and support@ohayu.com are open 24/7.
