$144+ Cheap flights from Allentown to St. Louis (ABE - STL)
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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — STL
Jun 28 — Jul 51
Round-trip
1 adult, Economy
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Find cheap flights from Allentown to St. Louis 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 Allentown to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Allentown to St. LouisExplore the most affordable flight options available from Allentown to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 29, 2026.
Explore the most affordable flight options available from Allentown to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 29, 2026.
This Delta deal was found by Cheapflights users on 5/28. 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 6/236:05 pm
ABE
- STL
1 stop5h 13m
Delta
Wed 6/243:57 pm
STL
- ABE
1 stop6h 11m
Delta
Deal found 5/28![Delta logo]()
$297
This Delta deal was found by Cheapflights users on 5/26. 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 9/36:13 pm
ABE
- STL
1 stop6h 45m
Delta
Sun 9/67:00 am
STL
- ABE
1 stop4h 28m
Delta
Deal found 5/26![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 5/26. 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.
Sat 6/135:36 pm
ABE
- STL
1 stop4h 54m
United Airlines
Sat 6/206:00 am
STL
- ABE
1 stop6h 42m
United Airlines
Deal found 5/26![United Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 5/26. 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.
Fri 6/126:10 pm
ABE
- STL
1 stop6h 46m
Delta
Mon 6/153:57 pm
STL
- ABE
1 stop6h 11m
Delta
Deal found 5/26![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 5/24. 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 6/176:10 pm
ABE
- STL
1 stop6h 46m
Delta
Tue 6/239:21 am
STL
- ABE
1 stop7h 04m
Delta
Deal found 5/24![Delta logo]()
$354
This United Airlines deal was found by Cheapflights users on 5/27. 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 6/265:41 pm
ABE
- STL
1 stop4h 45m
United Airlines
Tue 6/301:13 pm
STL
- ABE
1 stop6h 54m
United Airlines
Deal found 5/27![United Airlines logo]()
$368
This Delta deal was found by Cheapflights users on 5/28. 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.
Fri 6/126:10 pm
ABE
- STL
1 stop6h 46m
Delta
Sun 6/146:00 am
STL
- ABE
1 stop5h 27m
Delta
Deal found 5/28![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 5/28. 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.
Sat 6/275:38 pm
ABE
- STL
1 stop4h 48m
United Airlines
Fri 7/31:13 pm
STL
- ABE
1 stop6h 54m
United Airlines
Deal found 5/28![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 5/28. 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 9/296:13 pm
ABE
- STL
1 stop6h 23m
Delta
Fri 10/212:00 pm
STL
- ABE
1 stop4h 21m
Delta
Deal found 5/28![Delta logo]()
$390
This Delta deal was found by Cheapflights users on 5/24. 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 6/46:23 am
ABE
- STL
1 stop6h 57m
Delta
Sat 6/63:13 pm
STL
- ABE
1 stop6h 05m
Delta
Deal found 5/24![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 5/25. 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 5/266:15 pm
ABE
- STL
1 stop6h 44m
Delta
Tue 6/210:49 am
STL
- ABE
1 stop5h 39m
Delta
Deal found 5/25![Delta logo]()
$414
This Delta deal was found by Cheapflights users on 5/26. 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 6/111:12 pm
ABE
- STL
1 stop5h 55m
Delta
Mon 6/153:57 pm
STL
- ABE
1 stop6h 11m
Delta
Deal found 5/26![Delta logo]()
$419
Best flights from Allentown to St. LouisDiscover carefully curated flight deals from Allentown to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 29, 2026.
Discover carefully curated flight deals from Allentown to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 29, 2026.
This Delta deal was found by Cheapflights users on 5/24. 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 6/176:10 pm
ABE
- STL
1 stop6h 46m
Delta
Tue 6/239:21 am
STL
- ABE
1 stop7h 04m
Delta
Deal found 5/24![Delta logo]()
$354
This United Airlines deal was found by Cheapflights users on 5/25. 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.
Sat 6/275:38 pm
ABE
- STL
1 stop4h 48m
United Airlines
Fri 7/31:13 pm
STL
- ABE
1 stop6h 54m
United Airlines
Deal found 5/25![United Airlines logo]()
$389
This American Airlines deal was found by Cheapflights users on 5/24. 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 7/65:12 pm
ABE
- STL
1 stop16h 19m
American Airlines
Mon 7/136:13 pm
STL
- ABE
1 stop5h 10m
American Airlines
Deal found 5/24![American Airlines logo]()
$439
This Delta deal was found by Cheapflights users on 5/27. 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.
Fri 6/126:10 pm
ABE
- STL
1 stop6h 46m
Delta
Sun 6/146:00 am
STL
- ABE
1 stop5h 27m
Delta
Deal found 5/27![Delta logo]()
$369
This Delta deal was found by Cheapflights users on 5/26. 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 6/106:10 pm
ABE
- STL
1 stop5h 08m
Delta
Sun 6/149:21 am
STL
- ABE
1 stop7h 09m
Delta
Deal found 5/26![Delta logo]()
$369
This Delta deal was found by Cheapflights users on 5/28. 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 9/296:13 pm
ABE
- STL
1 stop6h 23m
Delta
Fri 10/212:00 pm
STL
- ABE
1 stop4h 21m
Delta
Deal found 5/28![Delta logo]()
$390
This Delta deal was found by Cheapflights users on 5/26. 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 6/136:09 pm
ABE
- STL
1 stop6h 37m
Delta
Mon 6/153:57 pm
STL
- ABE
1 stop6h 11m
Delta
Deal found 5/26![Delta logo]()
$419
This Delta deal was found by Cheapflights users on 5/28. 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 6/276:09 pm
ABE
- STL
1 stop6h 37m
Delta
Sat 7/48:00 am
STL
- ABE
1 stop4h 25m
Delta
Deal found 5/28![Delta logo]()
$423
Last-minute flights from Allentown to St. LouisDiscover last-minute flight deals from Allentown to St. Louis. Data last updated May 29, 2026 and is based on user searches.
Discover last-minute flight deals from Allentown to St. Louis. Data last updated May 29, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 5/29. 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 6/35:36 pm
ABE
- STL
1 stop6h 53m
United Airlines
Sun 6/79:14 am
STL
- ABE
1 stop6h 47m
United Airlines
Deal found 5/29![United Airlines logo]()
$414
This Delta deal was found by Cheapflights users on 5/26. 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 6/111:12 pm
ABE
- STL
1 stop5h 55m
Delta
Mon 6/153:57 pm
STL
- ABE
1 stop6h 11m
Delta
Deal found 5/26![Delta logo]()
$419
This Delta deal was found by Cheapflights users on 5/26. 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.
Fri 6/126:10 pm
ABE
- STL
1 stop6h 46m
Delta
Mon 6/153:57 pm
STL
- ABE
1 stop6h 11m
Delta
Deal found 5/26![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 5/28. 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.
Fri 6/126:10 pm
ABE
- STL
1 stop6h 46m
Delta
Sun 6/146:00 am
STL
- ABE
1 stop5h 27m
Delta
Deal found 5/28![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 5/26. 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.
Sat 6/135:36 pm
ABE
- STL
1 stop4h 54m
United Airlines
Sat 6/206:00 am
STL
- ABE
1 stop6h 42m
United Airlines
Deal found 5/26![United Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 5/24. 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 6/176:10 pm
ABE
- STL
1 stop6h 46m
Delta
Tue 6/239:21 am
STL
- ABE
1 stop7h 04m
Delta
Deal found 5/24![Delta logo]()
$354
This American Airlines deal was found by Cheapflights users on 5/24. 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 6/185:46 pm
ABE
- STL
1 stop6h 58m
American Airlines
Tue 6/232:32 pm
STL
- ABE
1 stop7h 47m
American Airlines
Deal found 5/24![American Airlines logo]()
$447
This Delta deal was found by Cheapflights users on 5/28. 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 6/236:05 pm
ABE
- STL
1 stop5h 13m
Delta
Wed 6/243:57 pm
STL
- ABE
1 stop6h 11m
Delta
Deal found 5/28![Delta logo]()
$297
This United Airlines deal was found by Cheapflights users on 5/27. 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 6/265:41 pm
ABE
- STL
1 stop4h 45m
United Airlines
Tue 6/301:13 pm
STL
- ABE
1 stop6h 54m
United Airlines
Deal found 5/27![United Airlines logo]()
$368
This Delta deal was found by Cheapflights users on 5/29. 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 6/276:09 pm
ABE
- STL
1 stop6h 37m
Delta
Fri 7/36:00 am
STL
- ABE
1 stop5h 27m
Delta
Deal found 5/29![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 5/28. 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.
Sat 6/275:38 pm
ABE
- STL
1 stop4h 48m
United Airlines
Fri 7/31:13 pm
STL
- ABE
1 stop6h 54m
United Airlines
Deal found 5/28![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 5/28. 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 6/276:09 pm
ABE
- STL
1 stop6h 37m
Delta
Sat 7/48:00 am
STL
- ABE
1 stop4h 25m
Delta
Deal found 5/28![Delta logo]()
$423
One-way flights from Allentown to St. LouisSearch for one-way flight options from Allentown to St. Louis. Find affordable one-way fares based on user searches. Data last updated May 29, 2026.
Search for one-way flight options from Allentown to St. Louis. Find affordable one-way fares based on user searches. Data last updated May 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Mon 8/108:50 pm
ABE
- STL
1 stop28h 09m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Sun 8/912:29 pm
ABE
- STL
2 stops7h 07m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Tue 8/1110:19 am
ABE
- STL
1 stop14h 40m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 5/28. 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 8/78:50 pm
ABE
- STL
2 stops22h 25m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$221
This Delta deal was found by Cheapflights users on 5/25. 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 6/241:12 pm
ABE
- STL
1 stop5h 55m
Delta
Deal found 5/25![Delta logo]()
$242
This United Airlines deal was found by Cheapflights users on 5/25. 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.
Sat 8/155:36 pm
ABE
- STL
1 stop5h 24m
United Airlines
Deal found 5/25![United Airlines logo]()
$280
Find flight deals from Allentown to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to St. Louis (STL). 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 May 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $297 (Delta) |
One-way from | $144 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $509 |
Cheapflights Fare Finder
Customize your flight search to find flights from Allentown to St. Louis 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 May 29, 2026.
Use the filters below to find and compare flights from Allentown to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Wed 6/17
6:10 pm-11:56 pm
1 stop6h 46m
Lambert-St Louis
Tue 6/23
9:21 am-5:25 pm
1 stop7h 04m
$354
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Fri 6/12
6:10 pm-11:56 pm
1 stop6h 46m
Lambert-St Louis
Sun 6/14
6:00 am-12:27 pm
1 stop5h 27m
$369
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Wed 6/10
6:10 pm-10:18 pm
1 stop5h 08m
Lambert-St Louis
Sun 6/14
9:21 am-5:30 pm
1 stop7h 09m
$369
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Sat 6/27
5:38 pm-9:26 pm
1 stop4h 48m
Lambert-St Louis
Fri 7/3
1:13 pm-9:07 pm
1 stop6h 54m
$389
Quickest round-trip
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Tue 9/29
6:13 pm-11:36 pm
1 stop6h 23m
Lambert-St Louis
Fri 10/2
12:00 pm-5:21 pm
1 stop4h 21m
$390
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Sat 6/13
6:09 pm-11:46 pm
1 stop6h 37m
Lambert-St Louis
Mon 6/15
3:57 pm-11:08 pm
1 stop6h 11m
$419
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Sat 6/27
6:09 pm-11:46 pm
1 stop6h 37m
Lambert-St Louis
Sat 7/4
8:00 am-1:25 pm
1 stop4h 25m
$423
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Mon 7/6
5:12 pm-8:31 am
1 stop16h 19m
Lambert-St Louis
Mon 7/13
6:13 pm-12:23 am
1 stop5h 10m
$439
Cheapest one-way
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Mon 8/10
8:50 pm-7:23 pm
2 stops23h 33m
$176
AllentownSt. Louis
ABE - STL
ABESTL
Allentown-Bethlehem
Sun 8/9
6:22 pm-6:36 pm
3 stops25h 14m
$220
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Allentown to St. Louis
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 Allentown to St. Louis in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Allentown-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Allentown-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Allentown-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Allentown-St. Louis 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 Allentown-St. Louis 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 Allentown to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Allentown with our price prediction graph.
ABE-STL
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 Allentown to St. Louis
What is the cheapest month to book a flight from Allentown to St. Louis?
Currently, September is the cheapest month in which you can book a flight from Allentown to St. Louis (average of $290). Flying from Allentown to St. Louis in December is currently the most expensive (average of $518). 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.
How much does it cost to fly round-trip from Allentown to St. Louis?
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated May 29, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from Allentown to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Comfort
7.8
Food
7.2
Crew
8.5
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Comfort
7.8
Food
7.2
Crew
8.5
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Comfort
7.8
Food
7.2
Crew
8.5
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Comfort
7.8
Food
7.2
Crew
8.5
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Allentown to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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Top 3 airlines flying from Allentown to St. Louis
Discover the top 3 airlines that operate flights from Allentown to St. Louis. 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 May 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$228 | Average$307 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$273 | Average$390 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$312 | Average$426 | FlexibilityNo cancel fee | On-time69% |