$141 Find Cheap Flights from Chicago to Allentown - Compare and Save

These are the earliest and latest flight times available from Chicago to Allentown:

• Earliest: departs at 6:25 am and lands at 8:33 am
• Latest: departs at 8:45 pm and lands at 10:53 pm.

The flight takes about 2h 08m.

Two cabin classes are available on flights from Chicago to Allentown:

• Economy Class
• First Class

A nonstop flight from Chicago to Allentown takes 2h 08m, covering 638 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from Chicago to Allentown range from $279 to $415, with an average of $332 over the past 12 months. Anything below $279 counts as a good deal.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $292 round-trip via Atlanta Hartsfield-Jackson (ATL), compared to $329 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

Afternoon is the busiest departure period on Chicago to Allentown flights, with 50% of flights leaving in that window. Evening departures account for 50%, morning flights for 0%, and night flights for 0%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $319 to $1,841. That means the highest observed fare was about 6x higher than the lowest one.

One-way fares from Chicago to Allentown are currently lower than usual. Average one-way flight prices are about $183, which is 43% below the typical average for this route.

Allentown-Bethlehem Airport (ABE) hosts 5 major car rental companies, with daily rates starting from around $25 for economy cars. Top options include:

• Alamo
• Dollar
• Budget
• Hertz
• Thrifty

Flights from Chicago to Allentown may depart from several airports in Chicago area, including Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD). Flights usually arrive at Allentown-Bethlehem (ABE).

One-stop flights from Chicago to Allentown most commonly connect through:

• Philadelphia (PHL) - 56% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 31% of one-stop connections
• Charlotte Douglas (CLT) - 13% of one-stop connections

Yes. Flexible dates can save you up to 28% on flights from Chicago to Allentown. Thursday is the cheapest departure day at $319 round-trip on average, while Sunday is the most expensive at $439, a difference of $120.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

2 airlines operate flights between Chicago and Allentown. The airlines offering nonstop flights on this route include:

• United Airlines
• American Airlines

Flying via Philadelphia (PHL) gives the shortest average 1-stop total travel time at 5h 04m, compared with 5h 46m via Atlanta Hartsfield-Jackson (ATL) and 5h 56m via Charlotte Douglas (CLT).

Allentown is 1 hour ahead of Chicago (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Among airlines operating Chicago to Allentown flights:

• American Airlines: offers free seat selection
• United Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag and a checked bag in First Class
• American Airlines: a cabin bag and a checked bag in First Class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.