Cheap Flights from Chicago (CHI) to San Jose (SJO)

Frequently Asked Questions

• What are the cheapest flights from Chicago to San Jose (CHI-SJO)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as US$115 on Cheapest nonstop routes (e.g. MDW to SJO on Tue, Mar 10), while Copa Airlines offers Cheapest nonstop round-trips from US$349 departing on Sat, Apr 18 and returning on Tue, Apr 21.

• How long is a flight from Chicago to San Jose?

  It takes about 5 hours 10 minutes to fly from Chicago to San Jose.

• When is the best time to book flights from Chicago to San Jose?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Chicago to San Jose 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.

• How can I find the best deals on flights from Chicago to San Jose?

  To find best deals on flights from Chicago to San Jose, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Mar 10, with one-way flights priced at just US$115.
  · 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 Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for San Jose travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Chicago (CHI) to San Jose (SJO) the cheapest?

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

• Which upcoming date is cheapest to fly from Chicago to San Jose on?

  After crunching the numbers on our March flight calendar, it's currently cheapest to fly from Chicago to San Jose on March 11, 2026 with Spirit Airlines, with prices starting at US$266.

• Is there any time difference between Chicago and San Jose?

  The time difference between San Jose and Chicago is 0h.

• How do I change or cancel my ticket from Chicago to San Jose?

  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 booking, 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.