Sioux Falls to Allentown flights

Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Sioux Falls to Allentown is €161 with Allegiant Air (checked on 16 Oct 2026).

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Lowest observed

€161

Average observed

€313

Cheapest month

January 2027

Last checked

23 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €161

Lowest observed

7 Jan 2027

Allegiant Air · 1 stop · One way

Cheapest observed day · Last checked: 16 Oct 2026

Departure

10:39

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.

One-way fare

One-way fare · No data: click and we will search

Lowest observed: €161, departing 7 Jan 2027 (Last checked: 16 Oct 2026)One-way fareCheck live prices for this route
Airlines seen: Allegiant Air, Breeze Airways, WestJet
Typical journey time: 24h 18m

Short answer

Routavio has seen Allegiant Air fares from Sioux Falls to Allentown. The lowest fare Routavio's own searches returned is €161, seen on 16 Oct 2026. The average across the fares we caught is €313. January 2027 is the cheapest month in our observations, at €161. These are prices Routavio's searches returned on the dates shown, not quotes; run a live search for today's fare.

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: 24h 18m
Seen on fares with a connection: Allegiant Air

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

A clearer picture of your fare

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

Airport to city: straight-line distance

Sioux Falls Regional Airport (FSD) → Sioux Falls, city gazetteer reference point (43.5473, -96.7283): ≈ 4 km.
Lehigh Valley International Airport (ABE) → Allentown, city gazetteer reference point (40.6023, -75.4714): ≈ 6 km.

Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.

Frequently asked

How much is a flight from Sioux Falls to Allentown?

The lowest fare Routavio has observed is €161, found on 16 Oct 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 January 2027 is the cheapest month so far, at €161.

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.

Which airlines fly from Sioux Falls to Allentown?

Routavio has seen these carriers on the route: Allegiant Air, Breeze Airways, WestJet.

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

Across the 67 fares Routavio observed, the average journey time is 25h 21m, 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 67 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