ITO to SFO, Hilo International Airport to San Francisco International Airport Cheap Flights

Based on HopeGoo data, Hawaiian Airlines offers one-way fares as low as US$198 on Cheapest nonstop routes (e.g. ITO to SFO on Tue, Apr 7), while Alaska Airlines offers Cheapest nonstop round-trips from US$342 departing on Wed, Apr 22 and returning on Tue, Apr 28.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from Hilo to San Francisco is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

To find best deals on flights from Hilo to San Francisco, you can use various tools on HopeGoo: · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Apr 7, with one-way flights priced at just US$198. · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Hawaiian Airlines. · Set up price alerts to easily monitor ticket prices without having to check every day. · Check HopeGoo flight deals and promo codes frequently. · Avoid peak season unless you book very early. It seems the peak season for San Francisco travel is around January. · Get exclusive promo codes for HopeGoo app users.

The cheapest months to fly from Hilo to San Francisco is October, when demand for travel is lower.

After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Hilo to San Francisco on February 27, 2026 with United Airlines, with prices starting at US$874.

The time difference between San Francisco and Hilo is 2h.

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