Cheap Flights from San Juan to Chicago from US$102

Frequently Asked Questions

• What are the cheapest flights from San Juan to Chicago (SJU-CHI)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as US$102 on Cheapest nonstop routes (e.g. SJU to ORD on Sun, Sep 27), while American Airlines offers Cheapest nonstop round-trips from US$227 departing on Tue, Oct 6 and returning on Sun, Oct 11.

• Which airlines offer direct flights from San Juan to Chicago?

  At the moment, you can catch a nonstop flight from San Juan to Chicago with the following airlines, including: American Airlines Frontier Airlines United Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

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

  It takes about 5 hours 7 minutes to fly from San Juan to Chicago.

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

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Juan to Chicago 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 many flights are there per week from San Juan to Chicago?

  Based on Trip.com data in the past 4 weeks, there is 19 flight per week flying from San Juan to Chicago. You can check the weekly schedule for popular airlines on this route below: American Airlines: S/M/-/-/T/F/S -- AA3013 (01:00) Frontier Airlines: S/M/-/-/T/F/S -- F93345 (19:46)

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

  To find best deals on flights from San Juan to Chicago, 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 Sun, Sep 27, with one-way flights priced at just US$102.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is American 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 Chicago travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from San Juan (SJU) to Chicago (CHI) the cheapest?

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

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

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from San Juan to Chicago on September 5, 2026 with Frontier Airlines, with prices starting at US$174.

• Which airports fly into Chicago from San Juan?

  You can land at any one of the following hubs in Chicago: Chicago Midway International Airport (MDW), O'Hare International Airport (ORD), and Chicago Rockford International Airport (RFD). Flying from Luis Munoz Marin International Airport to O'Hare International Airport (SJU-ORD) is by far the most common option on this route.

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

  The time difference between Chicago and San Juan is 2h.

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

  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.

• What is the average cost of a one-way flight from San Juan to Chicago?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from San Juan to Chicago is US$274. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from San Juan to Chicago?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from San Juan to Chicago is US$433. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from San Juan to Chicago on Trip.com?

  Enter San Juan and Chicago, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the San Juan to Chicago route?

  Frontier Airlinesare the most popular budget airlines flying from San Juan to Chicago. Check baggage, seat and payment fees before comparing the final price.