$307+ Cheap flights from St. Louis to Allentown (STL - ABE)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ABE
Oct 8 — Oct 151
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Allentown with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Allentown
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to AllentownExplore 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 September 8, 2026.
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 September 8, 2026.
This Delta deal was found by Cheapflights users on 9/6. 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 10/610:14 am -
1 stop6h 02m
Tue 10/136:03 pm -
1 stop6h 51m
Deal found 9/6![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 11/31:08 pm -
1 stop6h 54m
Sat 11/75:36 pm -
1 stop5h 04m
Deal found 9/7![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 9/5. 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.
Fri 9/1112:59 pm -
1 stop7h 01m
Sat 9/126:15 am -
1 stop6h 48m
Deal found 9/5![United Airlines logo]()
$444
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 9/229:43 am -
1 stop6h 13m
Sat 9/265:43 pm -
1 stop6h 16m
Deal found 9/7![United Airlines logo]()
$449
This Delta deal was found by Cheapflights users on 9/5. 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.
Thu 9/1010:40 am -
1 stop5h 41m
Sat 9/126:28 am -
1 stop7h 04m
Deal found 9/5![Delta logo]()
$471
This American Airlines deal was found by Cheapflights users on 9/4. 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.
Wed 10/711:31 am -
1 stop5h 43m
Tue 10/136:00 am -
1 stop5h 50m
Deal found 9/4![American Airlines logo]()
$479
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:29 pm -
2 stops47h 02m
Fri 10/94:32 pm -
1 stop7h 41m
Deal found 9/4![Multiple Airlines logo]()
$485
This Delta deal was found by Cheapflights users on 9/4. 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.
Sat 9/53:44 pm -
1 stop5h 39m
Tue 9/86:08 pm -
1 stop6h 34m
Deal found 9/4![Delta logo]()
$487
This American Airlines deal was found by Cheapflights users on 9/4. 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.
Fri 10/27:21 am -
1 stop13h 57m
Fri 10/96:44 pm -
1 stop6h 35m
Deal found 9/4![American Airlines logo]()
$535
Best flights from St. Louis to AllentownDiscover carefully curated flight deals from St. Louis to Allentown that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
Discover carefully curated flight deals from St. Louis to Allentown that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
This Delta deal was found by Cheapflights users on 9/4. 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.
Wed 10/76:00 am -
1 stop5h 05m
Tue 10/136:03 pm -
1 stop6h 51m
Deal found 9/4![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/4. 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.
Tue 11/31:08 pm -
1 stop6h 54m
Sat 11/75:36 pm -
1 stop5h 04m
Deal found 9/4![United Airlines logo]()
$419
This American Airlines deal was found by Cheapflights users on 9/7. 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.
Sun 9/204:19 pm -
1 stop7h 01m
Wed 9/239:13 am -
1 stop5h 03m
Deal found 9/7![American Airlines logo]()
$642
This Delta deal was found by Cheapflights users on 9/7. 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.
Sat 12/193:58 pm -
1 stop5h 45m
Sat 12/261:00 pm -
1 stop6h 22m
Deal found 9/7![Delta logo]()
$647
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Sun 9/2012:59 pm -
1 stop7h 01m
Thu 9/246:20 am -
1 stop5h 28m
Deal found 9/6![United Airlines logo]()
$773
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Fri 9/184:40 pm -
2 stops23h 16m
Tue 9/225:36 pm -
1 stop5h 24m
Deal found 9/3![United Airlines logo]()
$857
Last-minute flights from St. Louis to AllentownDiscover last-minute flight deals from St. Louis to Allentown. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Allentown. Data last updated September 8, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/4. 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.
Sat 9/53:44 pm -
1 stop5h 39m
Tue 9/86:08 pm -
1 stop6h 34m
Deal found 9/4![Delta logo]()
$487
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Mon 9/710:22 am -
1 stop5h 05m
Wed 9/99:13 am -
1 stop5h 03m
Deal found 9/5![American Airlines logo]()
$642
This United Airlines deal was found by Cheapflights users on 9/4. 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.
Tue 9/812:59 pm -
1 stop7h 01m
Thu 9/105:36 pm -
1 stop5h 00m
Deal found 9/4![United Airlines logo]()
$640
This Delta deal was found by Cheapflights users on 9/5. 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.
Thu 9/1010:40 am -
1 stop5h 41m
Sat 9/126:28 am -
1 stop7h 04m
Deal found 9/5![Delta logo]()
$471
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:39 pm -
1 stop12h 55m
Sat 9/1210:00 am -
2 stops27h 07m
Deal found 9/5![Multiple Airlines logo]()
$631
This United Airlines deal was found by Cheapflights users on 9/5. 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.
Fri 9/1112:59 pm -
1 stop7h 01m
Sat 9/126:15 am -
1 stop6h 48m
Deal found 9/5![United Airlines logo]()
$444
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Fri 9/189:40 am -
1 stop23h 17m
Tue 9/225:36 pm -
1 stop5h 24m
Deal found 9/3![United Airlines logo]()
$687
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 9/229:43 am -
1 stop6h 13m
Sat 9/265:43 pm -
1 stop6h 16m
Deal found 9/7![United Airlines logo]()
$449
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:29 pm -
2 stops47h 02m
Fri 10/94:32 pm -
1 stop7h 41m
Deal found 9/4![Multiple Airlines logo]()
$485
This American Airlines deal was found by Cheapflights users on 9/4. 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.
Fri 10/27:21 am -
1 stop13h 57m
Fri 10/96:44 pm -
1 stop6h 35m
Deal found 9/4![American Airlines logo]()
$535
This Delta deal was found by Cheapflights users on 9/6. 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 10/610:14 am -
1 stop6h 02m
Tue 10/136:03 pm -
1 stop6h 51m
Deal found 9/6![Delta logo]()
$359
This American Airlines deal was found by Cheapflights users on 9/4. 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.
Wed 10/711:31 am -
1 stop5h 43m
Tue 10/136:00 am -
1 stop5h 50m
Deal found 9/4![American Airlines logo]()
$479
One-way flights from St. Louis to AllentownSearch for one-way flight options from St. Louis to Allentown. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
Search for one-way flight options from St. Louis to Allentown. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This American Airlines deal was found by Cheapflights users on 9/3. 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 10/111:01 am -
1 stop4h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![American Airlines logo]()
$307
Find 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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $359 (Delta) |
One-way from | $307 (American Airlines) |
Popular in | August |
Cheapest in | January |
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 7,457,451 searches. Data last updated September 8, 2026.
Use the filters below to find and compare flights from St. Louis to Allentown that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisAllentown
STL Lambert-St Louis - ABE Allentown-Bethlehem
STLABE
Lambert-St Louis
Thu 10/1
11:01 am-4:40 pm
1 stop4h 39m
Allentown-Bethlehem
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$307
St. LouisAllentown
STL Lambert-St Louis - ABE Allentown-Bethlehem
STLABE
Lambert-St Louis
Wed 10/7
6:00 am-12:05 pm
1 stop5h 05m
Allentown-Bethlehem
Tue 10/13
6:03 pm-11:54 pm
1 stop6h 51m
$359
St. LouisAllentown
STL Lambert-St Louis - ABE Allentown-Bethlehem
STLABE
Lambert-St Louis
Tue 11/3
1:08 pm-9:02 pm
1 stop6h 54m
Allentown-Bethlehem
Sat 11/7
5:36 pm-9:40 pm
1 stop5h 04m
$419
St. LouisAllentown
STL Lambert-St Louis - ABE Allentown-Bethlehem
STLABE
Lambert-St Louis
Sun 9/20
4:19 pm-12:20 am
1 stop7h 01m
Allentown-Bethlehem
Wed 9/23
9:13 am-1:16 pm
1 stop5h 03m
$642
St. LouisAllentown
STL Lambert-St Louis - ABE Allentown-Bethlehem
STLABE
Lambert-St Louis
Sat 12/19
3:58 pm-10:43 pm
1 stop5h 45m
Allentown-Bethlehem
Sat 12/26
1:00 pm-6:22 pm
1 stop6h 22m
$647
St. LouisAllentown
STL Lambert-St Louis - ABE Allentown-Bethlehem
STLABE
Lambert-St Louis
Sun 9/20
12:59 pm-9:00 pm
1 stop7h 01m
Allentown-Bethlehem
Thu 9/24
6:20 am-10:48 am
1 stop5h 28m
$773
St. LouisAllentown
STL Lambert-St Louis - ABE Allentown-Bethlehem
STLABE
Lambert-St Louis
Fri 9/18
4:40 pm-4:56 pm
2 stops23h 16m
Allentown-Bethlehem
Tue 9/22
5:36 pm-10:00 pm
1 stop5h 24m
$857
Sorted by cheapest first
Compare providers for flights from St. Louis to Allentown
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Allentown in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Allentown flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Allentown flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Allentown flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Allentown flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Allentown flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
STL-ABE
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.
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 September 8, 2026.
Get a feel of what it's like to fly with Delta and American Airlines from St. Louis to Allentown by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Food
7.2
Comfort
7.8
Overall
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Boarding
8.1
Food
7.2
Comfort
7.8
Overall
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Boarding
8.1
Food
7.2
Comfort
7.8
Overall
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
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.
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Other flights to Allentown
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Alternative routes for St. Louis to Allentown
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Complete your trip
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St. Louis and Allentown flights
Browse other St. Louis and Allentown flight options. Last updated on September 8, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on September 8, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from St. Louis to Allentown
Discover the top 2 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 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$253 | Average$303 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$274 | Average$378 | FlexibilityNo cancel fee | On-timeN/A |