Route guide · 653 miles
Cheap Flights from Chicago to Allentown
ORD → ABE · Nonstop 1h 50m · Live round-trip fares
Plenty of travelers price out Chicago to Allentown every day — here's how to beat the average fare. Nonstops run about 1h 50m, and the calendar matters more than the airline. Aim to book 2–4 weeks ahead, stay flexible on the day of the week, and set a free alert so a price drop never slips past you.
Live fares for ORD → ABE are updating. Use the search below for real-time prices.
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Updated daily
Flight time
1h 50m
Nonstop, typical
Distance
653 mi
ORD → ABE
Book ahead
2–4 weeks
Best window, typically
Nonstop airlines
1
United Airlines
Nonstop flights from Chicago to Allentown
Want to skip the layover? Nonstops from Chicago to Allentown are flown by United Airlines, getting you there in about 1h 50m. For the lowest fares, book around 2–4 weeks before departure — last-minute nonstops on this route rarely come cheap.
Booking insights: Chicago → Allentown
- Distance: 653 miles · nonstop flight time: 1h 50m.
- Rule of thumb for this route: the sweet spot is usually 2–4 weeks before departure.
- If your dates flex by a day or two, shifting to a midweek departure is the easiest saving there is.
- Set a free Airfare Deal alert instead of checking daily — the best fares can sell out in hours.
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Flying from Chicago to Allentown: what you need to know
The flight
Chicago to Allentown covers 653 miles, and a nonstop gets it done in about 1h 50m. That's long enough to settle in with a coffee and a downloaded show, short enough that a connection rarely makes sense — a layover usually doubles your travel day to save very little.
Airlines on this route
United Airlines flies this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from Chicago (ORD)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our Chicago airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in Allentown (ABE)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The Allentown airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check Allentown to Chicago fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 653 miles, booking 2–4 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- Basic economy fares often exclude checked bags and seat selection. Price the whole trip, not the headline fare.
- Get to the airport two hours before departure; security, not the flight, is the part that runs late.
- If you're traveling with only a carry-on, you can skip the bag-drop line entirely with mobile check-in.
- Download the airline's app before you fly; gate changes and delays show up there first.
- Nonstop time on this route is about 1h 50m — a one-stop itinerary needs to be a lot cheaper to be worth the extra hours.
Chicago to Allentown flight FAQs
How long is the flight from ORD to ABE?
A nonstop from ORD to ABE clocks in at around 1h 50m for the 653-mile trip. If you're connecting, budget an extra 2–4 hours depending on where you stop.
Are there nonstop flights from Chicago to Allentown?
Yes — look for United Airlines on this route. Nonstop seats are usually priced best 2–4 weeks before departure.
What is the cheapest month to fly from Chicago to Allentown?
Fares from Chicago to Allentown tend to ease outside the peak summer and holiday rush — the late-summer and early-fall shoulder weeks are usually kinder on the wallet. Set a free Airfare Deal alert and we'll flag the dips for your dates.
How much are last minute flights from ORD to ABE?
Walking up to this route at the last minute is the expensive way to do it — prices inside 7 days of departure climb fast. The 2–4 weeks booking window is where the value sits.
What is a good round-trip deal from Chicago to Allentown?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from Chicago to Allentown?
The main carriers on this route are United Airlines. Comparing all of them on the live search below usually surfaces the lowest fare for your dates.
How early should I get to Chicago airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
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