San Jose to Sioux Flights from US$237 incl. tax

Based on HopeGoo data, United Airlines offers one-way fares as low as US$707 on Cheapest nonstop routes (e.g. SJC to SUX on Fri, May 1), while United Airlines offers Cheapest nonstop round-trips from US$902 departing on Fri, Mar 20 and returning on Sun, Mar 22.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from San Jose to Sioux City 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 San Jose to Sioux City, 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 Fri, May 1, with one-way flights priced at just US$707. · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United 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 Sioux City travel is around October. · Get exclusive promo codes for HopeGoo app users.

The cheapest months to fly from San Jose to Sioux City is September, when demand for travel is lower.

After crunching the numbers on our March flight calendar, it's currently cheapest to fly from San Jose to Sioux City on March 20, 2026 with United Airlines, with prices starting at US$902.

The time difference between Sioux City and San Jose is 2h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your HopeGoo, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.