STL - ABE

$277 Find Cheap Flights from St. Louis to Allentown

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Allentown departing on 8/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Allentown

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Allentown, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Allentown, as well as popular online travel agencies
Travelers love KAYAK
41 299 237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$277
Typical prices: $383-$281
Delta
Tue 8/11Wed 8/19
STL - ABE • 1 stop
Cheapest one-way
$350
Delta
Mon 5/25
STL - ABE • 1 stop
Top airlines
Cheapest • from $277 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Allentown. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $145 (round-trip)
Shortest trip • 4h 36m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 26% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Allentown!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Allentown (STL-ABE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Allentown that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Allentown

Tue, Aug 11 - Wed, Aug 19
Delta Logo
6:00 am - 12:08 pm
STL
-
ABE
5h 08m
1 stop
Delta Logo
5:40 pm - 11:37 pm
ABE
-
STL
6h 57m
1 stop
$277Delta
Wed, Aug 12 - Mon, Aug 17
Multiple Airlines Logo
4:09 pm - 2:03 pm
STL
-
ABE
20h 54m
1 stop
Multiple Airlines Logo
2:54 pm - 8:52 am
ABE
-
STL
42h 58m
2 stops
$288Multiple Airlines
Tue, Jun 30 - Tue, Jul 7
Delta Logo
10:51 am - 5:30 pm
STL
-
ABE
5h 39m
1 stop
Delta Logo
6:05 pm - 11:53 pm
ABE
-
STL
6h 48m
1 stop
$300Delta
Wed, Aug 12 - Mon, Aug 17
Multiple Airlines Logo
4:09 pm - 2:03 pm
STL
-
ABE
20h 54m
1 stop
Multiple Airlines Logo
2:54 pm - 5:30 pm
ABE
-
STL
27h 36m
2 stops
$314Multiple Airlines
Sat, Jul 4 - Sat, Jul 4
Delta Logo
6:00 am - 1:05 pm
STL
-
ABE
6h 05m
1 stop
Delta Logo
6:09 pm - 11:46 pm
ABE
-
STL
6h 37m
1 stop
$323Delta
Wed, Aug 12 - Sun, Aug 16
Multiple Airlines Logo
4:09 pm - 2:03 pm
STL
-
ABE
20h 54m
1 stop
Multiple Airlines Logo
12:29 pm - 6:36 pm
ABE
-
STL
7h 07m
2 stops
$327Multiple Airlines
Wed, Aug 12 - Sun, Aug 16
Multiple Airlines Logo
4:09 pm - 2:03 pm
STL
-
ABE
20h 54m
1 stop
Multiple Airlines Logo
12:29 pm - 6:36 pm
ABE
-
STL
7h 07m
2 stops
$328Multiple Airlines
Wed, Jul 1 - Sat, Jul 4
Delta Logo
6:00 am - 12:27 pm
STL
-
ABE
5h 27m
1 stop
Delta Logo
6:09 pm - 11:46 pm
ABE
-
STL
6h 37m
1 stop
$338Delta
Tue, May 12 - Sat, May 16
Delta Logo
9:15 am - 5:28 pm
STL
-
ABE
7h 13m
1 stop
Delta Logo
6:27 am - 11:54 am
ABE
-
STL
6h 27m
1 stop
$353Delta
Tue, Aug 11 - Mon, Aug 17
Delta Logo
3:42 pm - 10:56 pm
STL
-
ABE
6h 14m
1 stop
Delta Logo
6:30 am - 12:53 pm
ABE
-
STL
7h 23m
1 stop
$363Delta
Booking Insights

KAYAK's insights & trends for St. Louis to Allentown flights

Get data-powered insights and trends into flights from St. Louis to Allentown to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Allentown?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Allentown departing in August.

What is the cheapest month to fly from St. Louis to Allentown?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Allentown, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Allentown is September, where tickets cost $268 (return) on average. On the other hand, the most expensive months are March and April, where the average cost of round-trip tickets is $610 and $401 respectively.

Good to know

Low seasonFebruary
Cheapest flight$277
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from St. Louis to Allentown

When to book flights from St. Louis to Allentown

Are your dates flexible? Find out the best times to travel from St. Louis to Allentown based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Allentown

  • What is the cheapest flight from St. Louis to Allentown?

    In the last 3 days, the lowest price for a flight from St. Louis to Allentown was $350 for a one-way ticket and $277 for a round-trip.

  • Do I need a passport to fly between St. Louis and Allentown?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from St. Louis to Allentown?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Allentown?

    SkyTeam, and oneworld are the airline alliances operating flights between St. Louis and Allentown, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Allentown, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Allentown are Delta and American Airlines. With an average price for the route of $342 and an overall rating of 7.9, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $308 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from St. Louis to Allentown?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Allentown.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Allentown?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Allentown from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Allentown?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Allentown with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and ABE can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Allentown?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Allentown from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from St. Louis to Allentown

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Allentown. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Allentown? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8463 reviews
7.2Food
8.1Boarding
8.5Crew
7.8Entertainment
7.9Comfort
Airline reviews

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

8.0 ExcellentMatthew, May 2026
OKC - ATL
Read more Delta reviews

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

As we approached Denver, we encountered quite a bit of turbulence. I know this can sometimes be the case as I frequently fly this route but not on American. My gripe: Usually a pilot or co-pilot alerts passengers to the possibility of turbulance ahead of time. This did not occur nor did he communiucate during what was a pretty rough ride.

American delayed the flight for a crew rest period. The delay occurred late in the evening - the earliest i can find is 10:20 pm. With a 6 am flight anyone on the flight would have already have been asleep (unless you are insane, a vampire or on drugs) and at least for me i was already on the way to the airport at 445 am the next morning when i discovered they delayed the flight until 9 am. Given the incoming flight was in the air at 6 pm the evening before this should have been figured out a lot more timely that was there only crew to use. Just frustrating given there is no consideration for customer experience anymore in flying.

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

When I booked my flight a month ago - I selected a seat. That seat was NOT the one I ended up with when I checked into my flight the day before. This is the second time this has occurred. So, I checked my next flight on Wednesday and Thursday and no seat was assigned. Poor, very poor customer service.

Cleared standby and gave up my seat. Terrible policy and boarding experience

Message about flight cancelation was received late due to being in the air. No explanation, just canceled and booked on morning flight. We had to stay in the airport overnight because there was no transportation offered to get to the hotel that AA had available. Actual inflight was fine.

Bag drop was very disorganized in Miami. All main cabin passengers were shunted to just a few lanes and they had an equal number of lanes for first class passengers but there was nobody on those lines. They did nothing to bring the main cab and passengers over to the open lines and they just had employees standing there and doing nothing

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

American Airlines did everything they could with the high Spring Break crowd. I was frustrated to be changed from 1st class to a middle seat at the back of the plane. This has happened before, not sure booking 1st class and paying the extra actually works.

Everything you need to know for your flight from St. Louis to Allentown

Information on your arrival and departure airports