Cheap flight tickets from St Louis to Sioux Falls

Return selected
Return selected
origin
Enter the city you're flying from, or choose from the options below
Include nearby airports
    selected
    destination
    . Enter your destination, or choose from the options below
    Include nearby airports
      selected
      Travellers and cabin class, 1 Adult, Economy

      Compare St Louis to Sioux Falls flight deals

      Find the cheapest month or even day of the year to fly to Sioux Falls

      Book the best Sioux Falls fare with no extra fees

      Flight deals from St Louis to Sioux Falls

      Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Sioux Falls Airport? If you want to travel next month, return fares start from RM1,176. Find the lowest prices on one-way and return tickets right here.

      Find the cheapest month to fly from St Louis to Sioux Falls

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Sioux Falls flights are currently cheapest in November.

      St Louis to Sioux Falls: Alternative routes

      Compare routes from St Louis to Sioux Falls below. You may find an airport to fly into that's cheaper, faster, or easier than Sioux Falls.

      St Louis to Sioux Falls: Flight information

      The things to know before you go.
      Cheapest flight foundRM1,110
      Cheapest month to flyNovember

      Finding cheap flights from St Louis to Sioux Falls: Frequently asked questions

      The best price we found for a return flight from St Louis to Sioux Falls is RM1,160. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      Currently, there are no airlines that fly direct from St Louis to Sioux Falls. But we found flights with one or more stops from RM1,160.
      As of August 2026, there are no flights flying from St Louis to Sioux Falls.
      The cheapest month to fly from St Louis to Sioux Falls is usually November.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Sioux Falls Airport on Friday, 6 November 2026.
      No airlines currently offer direct flights between St Louis Airport and Sioux Falls Airport. Most routes have one or more stops.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Sioux Falls but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Sioux Falls is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, United offers the cheapest flight tickets to Sioux Falls.

      Flying from St Louis Airport (STL) to Sioux Falls Airport (FSD): what you need to know

      • To ensure you get on your STL to FSD flight, allow plenty of time to check in and find your gate. Turning up two hours before international departures and an hour before domestic flights is the general travel rule.

      • During popular months such as July, it's best to get to the airport well in advance. Arrive two hours before domestic departures and four hours ahead for an international flight whenever you're travelling during a high season in general.

      • Think about adding a stopover when booking your ticket from St Louis Airport to Sioux Falls Airport. Just deselect 'Direct flights only' to break up your trip, or maybe even explore a new city along the way. Here are some options between STL and FSD:

        • Chicago O'Hare International Airport

        • Denver International Airport

        • Minneapolis St Paul Airport

      How to find the cheapest flights from St Louis Airport (STL) to Sioux Falls Airport (FSD)

      • Currently, RM1,110 is the lowest price we've found for a one-way St Louis Airport to Sioux Falls Airport flight. The best price for a return ticket is RM1,160. Keep in mind that fares can change due to demand at the time of booking.

      • To get your hands on cheap tickets from STL to FSD, book in advance. Airlines generally offer their most competitively priced fares when flights are first made available.

      • If you're willing to be flexible with your travel plans, use the 'Whole month' search tool. It'll find the lowest price in every month when looking for a flight from St Louis Airport to Sioux Falls Airport.

      • Spend less time searching for cheap flights from STL to FSD by setting up a Price Alert. We'll send you an email or push notification on the app when fares go down.

      • Tailor your trip using filters. Select your departure and arrival times, total journey duration and airlines. You can also sort results by 'Fastest,' 'Cheapest' or 'Best' flights from St Louis Airport to Sioux Falls Airport.

      Handy information about St Louis Airport (STL)

      Arriving at Sioux Falls Airport (FSD)

      When to fly to Sioux Falls Airport (FSD)

      • It's time to plan your dates for your flight from St Louis Airport to Sioux Falls Airport. May is the busiest month to head to Sioux Falls. If you prefer a more laid-back vibe, go in March.

      • When booking your flight from St Louis Airport to Sioux Falls Airport, think about the type of weather you enjoy. July is the warmest month in Sioux Falls, with the temperature ranging from 14ºC (57ºF) to 31ºC (88ºF).

      • Look for cheap tickets from STL to FSD in January if you like cooler conditions. Temperatures are at their lowest around then, ranging between -17ºC (1ºF) and 0ºC (32ºF) on average.

      Explore more of the United States

      • You've done Sioux Falls, now it's time to discover more of the United States. Travel about 257 kilometres south to Omaha to check off its must-visit sights. From Kiewit Luminarium to OUR BODY: The Universe Within and Orpheum Theatre, you'll have a full itinerary ahead.

      • Around 322 kilometres north-east of Sioux Falls, Minneapolis is another favourite stop in the United States. Experience this destination's highlights firsthand at Walker Art Centre, Minneapolis Institute of Art and Minnehaha Regional Park.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.