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Allentown

$180+ Cheap flights from St. Louis to Allentown (STL - ABE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ABE
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from St. Louis to Allentown

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Allentown (ABE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$249
(Delta)

One-way from

$180
(Delta)

Popular in

February

Cheapest in

August

Average price

$289
From Lambert-St Louis to Allentown-Bethlehem
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One-way flight from Lambert-St Louis to Allentown-Bethlehem
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Highest demand for flights based on searches. 7% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from St. Louis to Allentown

Cheapest flights from St. Louis to Allentown
Explore the most affordable flight options available from St. Louis to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/93:36 pmSTL - ABE
1 stop6h 03mDelta
Sat 9/136:30 amABE - STL
1 stop6h 55mDelta
Deal found 6/10$249
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/264:37 pmSTL - ABE
1 stop6h 43mAmerican Airlines
Mon 6/308:02 pmABE - STL
1 stop4h 57mAmerican Airlines
Deal found 6/11$379
This Mytrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/269:50 amSTL - ABE
2 stops10h 03mMultiple Airlines
Mon 6/306:30 amABE - STL
3 stops13h 11mMultiple Airlines
Deal found 6/11$451
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/96:33 amSTL - ABE
1 stop9h 27mUnited Airlines
Tue 7/155:35 pmABE - STL
1 stop6h 10mUnited Airlines
Deal found 6/11$747

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to Allentown that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from St. Louis to Allentown that are best for you.

Fly from

St. Louis

Fly to

Allentown

Route

Depart

Return

Price

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Tue 9/9

3:36 pm-10:39 pm

1 stop6h 03m

Allentown-Bethlehem

Sat 9/13

6:30 am-12:25 pm

1 stop6h 55m

$249

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Thu 6/26

4:37 pm-12:20 am

1 stop6h 43m

Allentown-Bethlehem

Mon 6/30

8:02 pm-11:59 pm

1 stop4h 57m

$379

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Thu 6/26

9:50 am-8:53 pm

2 stops10h 03m

Allentown-Bethlehem

Mon 6/30

6:30 am-6:41 pm

3 stops13h 11m

$451

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Wed 7/9

6:33 am-5:00 pm

1 stop9h 27m

Allentown-Bethlehem

Tue 7/15

5:35 pm-10:45 pm

1 stop6h 10m

$747

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Fri 7/4

3:42 pm-9:16 pm

1 stop4h 34m

$180

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Mon 7/14

4:28 pm-12:27 am

1 stop6h 59m

$239

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Fri 7/4

6:36 pm-10:22 pm

2 stops26h 46m

$283

St. LouisAllentown

STL - ABE

STLABE

Lambert-St Louis

Mon 7/14

4:45 pm-5:00 pm

2 stops23h 15m

$518

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Best time to book a flight from St. Louis to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from St. Louis to Allentown?

Currently, February is the cheapest month in which you can book a flight from St. Louis to Allentown (average of $292). Flying from St. Louis to Allentown in December is currently the most expensive (average of $395). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Allentown by month

Plan your trip to Allentown by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Allentown ranges from 2.7 - 5.0 inches per month. July is typically the wettest month, when rainfall can reach 5.0 in. February is typically the driest time to visit Allentown when rainfall is around 2.7 in.

Temperature in Allentown by month

Plan your trip to Allentown by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Allentown, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing Allentown

Get insights into the airlines that provide service to Allentown. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Allentown. Reviews last updated June 12, 2025.
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Allentown. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from St. Louis to Allentown round-trip?

    Currently priced at $249, Delta will fly you from St. Louis to Allentown and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $379 and $747, respectively. Users have found that Delta is 25% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from St. Louis to Allentown one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $180. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from St. Louis to Allentown for a low price.

  • Can I find deals for flights from St. Louis to Allentown that include hotel bookings?

    Yes. In addition to deals on St. Louis to Allentown flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Allentown?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Allentown.

  • Can I find deals for business class flights from St. Louis to Allentown?

    Yes. Cheapflights offers flight deals from St. Louis to Allentown by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, February is the cheapest month in which you can book a flight from St. Louis to Allentown (average of $292). Flying from St. Louis to Allentown in December is currently the most expensive (average of $395). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 3 airlines flying from St. Louis to Allentown

Discover the top 3 airlines that operate flights from St. Louis to Allentown. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$223Average$488FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$233Average$348FlexibilityNo cancel feeOn-time71%
DeltaCheapest$248Average$463FlexibilityNo cancel feeOn-timeN/A

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