Chicago to Allentown flights

Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Chicago to Allentown is €103 with Allegiant Air (checked on 16 Oct 2026).

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Lowest observed

€103

Average observed

€209

Cheapest month

November 2026

Last checked

23 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €103

Lowest observed

5 Nov 2026

Allegiant Air · 1 stop · One way

Cheapest observed day · Last checked: 16 Oct 2026

Departure

09:30

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: €103, departing 5 Nov 2026 (Last checked: 16 Oct 2026)One-way fareCheck live prices for this route
Airlines seen: United Airlines, Allegiant Air, American Airlines, Breeze Airways, Contour Airlines, Frontier Airlines, JetBlue (7)
Typical journey time: 23h 34m

Short answer

Routavio has seen United Airlines fares from Chicago to Allentown. The lowest fare Routavio's own searches returned is €103, seen on 16 Oct 2026. The average across the fares we caught is €209. November 2026 is the cheapest month in our observations, at €103. 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 Chicago to Allentown. Prices move often, so pick your dates to see the latest options.

Route distance: 1,026 km
Typical journey time: 23h 34m
Alternative airports: CGX, DPA, MDW, PWK, RFD

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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We show like-for-like journeys so the comparison is fair.

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

How our prices work

Non-stop airlines seen on this route

Non-stop airlines seen on this route
Airline	Non-stop days / priced days	Fastest non-stop
United Airlines	5 / 109

Departure days with a non-stop fare checked in the last 14 days. A carrier listed here had a non-stop fare on at least 3 days; schedules may differ.

Airport to city: straight-line distance

Chicago Midway International Airport (MDW) → Chicago, city gazetteer reference point (41.8781, -87.6298): ≈ 14 km.
Chicago O'Hare International Airport (ORD) → Chicago, city gazetteer reference point (41.8781, -87.6298): ≈ 25 km.
Chicago Rockford International Airport (RFD) → Chicago, city gazetteer reference point (41.8781, -87.6298): ≈ 126 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.

Lowest one-way fare we saw per airline

Cheapest airline from Chicago to Allentown: Allegiant Air, from €103 (checked 16 Oct 2026).

Lowest one-way fare we saw per airline
Airline	Lowest fare	Priced days
Allegiant Air	€103Nov 5, 2026	53
Frontier Airlines	€145Jan 28, 2027	42
JetBlue	€154Nov 4, 2026	4
Contour Airlines	€167Dec 17, 2026	4
United Airlines	€232Jan 5, 2027	6

One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.

Frequently asked

How much is a flight from Chicago to Allentown?

The lowest fare Routavio has observed is €103, 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 Chicago to Allentown?

In our observations November 2026 is the cheapest month so far, at €103.

Are there direct flights from Chicago to Allentown?

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

Which airlines fly from Chicago to Allentown?

Routavio has seen these carriers on the route: United Airlines, Allegiant Air, American Airlines, Breeze Airways, Contour Airlines, Frontier Airlines, JetBlue (7).

How long does the flight from Chicago to Allentown take?

Across the 113 fares Routavio observed, the average journey time is 22h 51m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

Which airlines had non-stop offers on at least 3 departure dates from Chicago to Allentown?

For Chicago to Allentown, examples of observed one-way non-stop offers checked within the last 14 days: United Airlines (5). Each number counts distinct departure dates, not weekly flights; check current availability in search.

Which airline has the lowest fare from Chicago to Allentown?

Cheapest airline from Chicago to Allentown: Allegiant Air, from €103 (checked 16 Oct 2026).

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