$329 Cheap Flights from Sioux Falls (FSD) to Allentown (ABE)

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Sioux Falls to Allentown Flights

The cheapest times to fly from Sioux Falls to Allentown

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sioux Falls to Allentown are during the month of November. You can find some of the cheapest flights from Sioux Falls to Allentown with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Sioux Falls to Allentown

Sunday is one of the best days to book for cheap flights from Sioux Falls to Allentown: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Sioux Falls to Allentown

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sioux Falls to Allentown in 2026. You can also book with separate airlines for your outbound and return journeys, from $329 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sioux Falls to Allentown flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Sioux Falls to Allentown airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently Asked Questions

How much does a flight from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.) cost?

You can find cheap one-way flights from $329 and cheap return flights $594 Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.) with Expedia. Return flights often range between $798 and $1706. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.) ticket fares go up or down.

*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.

What is the cheapest month to fly from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.)?

The cheapest month to fly from FSD to ABE is November when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.

Which airlines fly direct from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.)?

Enter FSD to ABE and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

How do I find cheap flights from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.)?

To find a cheap flight from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

What is the best time to fly from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.)?

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

What is the earliest flight from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.)?

The earliest flight from Sioux Falls Regional (FSD) to Lehigh Valley International (ABE) typically departs at around 5:00 AM, operated by Delta. This is a seasonal service active in April, allowing you to start your journey early and make the most of your day upon arrival. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

What day of the week has the most flights from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.)?

The busiest day for flights from Sioux Falls Regional (FSD) to Lehigh Valley Intl. (ABE) is a Thursday, with around 9 flights. This gives you plenty of options for your travel plans. Major airlines on this route include United, American Airlines, and Delta.

What are the most popular departure times for flights from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.)?

The most popular departure times for flights from Sioux Falls (FSD) to Allentown (ABE) are in the early morning, from 6am to 9am. About 41% of passengers prefer this time window. American Airlines and United Airlines both offer flights during this period. This timing is favored because it allows travelers to arrive in Allentown with a full day ahead.

How long does it take to fly from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.)?

A flight from FSD to ABE with a layover takes around 5 hours 30 minutes, with the route covering approximately 1,107 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.

Can you fly business or first class from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.)?

You can fly first class between FSD and ABE. First class cabins are available on:

• American Airlines
• Delta Air Lines
• United Airlines

How do I earn miles on a Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.) flight with Expedia?

It's easy to earn miles on a Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

What airports do you fly into for Allentown from Sioux Falls Regional (FSD)?

From Sioux Falls Regional (FSD), you can fly into Lehigh Valley Intl. (ABE) to reach Allentown. Some flights may connect through major hubs like O'Hare Intl. (ORD), Dallas-Fort Worth Intl. (DFW), Denver Intl. (DEN) before reaching Allentown. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Is it cheaper to buy a plane ticket from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.) at the last minute?

Typically, booking a last minute flight from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Is it cheaper to book a Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.) flight and hotel package?

Securing a Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.) Allentown Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

Can I cancel or change the date of my flight from Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.)?

If you booked your Sioux Falls, SD (FSD-Sioux Falls Regional) to Allentown, PA (ABE-Lehigh Valley Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.