Sioux Falls to Allentown flights

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Lowest observed

€150

Average observed

€317

Cheapest month

October 2026

Last checked

6 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €150

Lowest observed

15 Oct 2026

Allegiant Air · 1 stop · One way

Cheapest observed day · Last checked: 11 Sep 2026

Departure

18:56

When to fly

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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

Prices are for observed departure and return date pairs. No data does not mean no flights.

Short answer

The lowest fare our own searches returned is €150, seen on 11 Sep 2026. The average across the fares we caught is €317. October 2026 is the cheapest month in our observations, at €150. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare.

Short answer

About this route

Explore the fares we observed from Sioux Falls to Allentown. Prices move often, so pick your dates to see the latest options.

Route distance: 1,780 km
Typical journey time: 20h 01m
Airlines seen: Allegiant Air, Breeze Airways, Frontier Airlines, United Airlines
Seen on fares with a connection: Allegiant Air, Frontier Airlines, Breeze Airways

Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.

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Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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The price is final on the provider's site, where your booking is completed.

How our prices work

Frequently asked

How much is a flight from Sioux Falls to Allentown?

The lowest fare we have observed is €150, found on 11 Sep 2026. Prices move, so read it as a floor rather than a quote.

When is the cheapest month to fly from Sioux Falls to Allentown?

In our observations October 2026 is the cheapest month so far, at €150.

Are there direct flights from Sioux Falls to Allentown?

Our data holds no non-stop flight from Sioux Falls to Allentown. The fares on this page include at least one stop.

How long does the flight from Sioux Falls to Allentown take?

The average journey time across the 56 fares we observed is 25h 37m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How many of the observed Sioux Falls to Allentown fares were non-stop?

None of the 57 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide