Cheap Flights from Portland to Sioux Falls from TWD 10,457

Frequently Asked Questions

• Which airlines offer the cheapest flights from Portland (PWM) to Sioux Falls (FSD)?

  Based on Trip.com data, United Airlines offers one-way fares as low as TWD 10,457 on Cheapest nonstop routes (e.g. PWM to FSD on Thu, Dec 11), while United Airlines offers Cheapest nonstop round-trips from TWD 28,575 departing on Thu, Dec 25 and returning on Tue, Dec 30.

• When is the best time to book flights from Portland to Sioux Falls?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Portland to Sioux Falls 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 Portland to Sioux Falls?

  To find best deals on flights from Portland to Sioux Falls, 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 Thu, Dec 11, with one-way flights priced at just TWD 10,457.
  · 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 Sioux Falls travel is around August.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from Portland to Sioux Falls to get the best price?

  The cheapest months to fly from Portland to Sioux Falls is October, when demand for travel is lower.

• Which upcoming date is the cheapest for flights from Portland to Sioux Falls?

  After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Portland to Sioux Falls on December 25, 2025 with United Airlines, with prices starting at TWD 28,574.

• What is the time difference between Portland and Sioux Falls?

  The time difference between Sioux Falls and Portland is 1h.

• How can I change or cancel my flight ticket from Portland to Sioux Falls?

  Tickets can only be changed or cancelled 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.