Cheap flights from Allentown to St. Louis from $245
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Allentown to St. Louis departing on 7/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Allentown to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to St. Louis?
In general, September is the cheapest month to fly from Allentown to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $233. The month of July is another great option to travel to St. Louis, with average flight prices from Allentown averaging around $265.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $263. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $491. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Allentown in the evening is the least expensive time of day to depart. momondo users have found prices as low as $254 when looking at flights departing in the evening. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $318 per ticket.
How far in advance should I book a flight to St. Louis?
You are more likely to see cheaper flights to St. Louis from Allentown when booking 15 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $323 when searching 15 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Allentown for as low as $195 on momondo.
What is the cheapest airline that flies from Allentown-Bethlehem to Lambert-St Louis?
United Airlines and American Airlines are the most popular carriers operating from Allentown-Bethlehem to Lambert-St Louis
What airlines fly to St. Louis?
American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to St. Louis from Allentown according to our data. American Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
When to book flights from Allentown to St. Louis
Cheap Allentown to St. Louis (ABE to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Allentown to St. Louis
How far is Allentown-Bethlehem to Lambert-St Louis by plane?
There are 794.2 mi between Allentown-Bethlehem and Lambert-St Louis. In terms of flight time, this usually takes a little over 4h 31m.
When did momondo last update prices for flights from Allentown-Bethlehem Airport to Lambert-St Louis Airport?
Prices for flights from Allentown-Bethlehem Airport to Lambert-St Louis Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Allentown-Bethlehem Airport to Lambert-St Louis Airport?
As of April 2025, there are 3 operators available to choose from for flights from Allentown-Bethlehem Airport to Lambert-St Louis Airport.
How old do you have to be to fly from Allentown-Bethlehem Airport to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Allentown-Bethlehem Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Allentown to St. Louis?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Allentown to St. Louis is American Airlines (68% of total bookings). The next most popular airlines are Delta (26%) and United Airlines (6%).
Best airlines flying from Allentown to St. Louis
Compare and see reviews for airlines that fly from Allentown to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $217 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $236 | Free Cancellation | Rating 7.4 8,685 reviews | |||
| PriceFrom $242 | Free Cancellation | Rating 8.0 7,920 reviews |
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Allentown to St. Louis?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Allentown to St. Louis. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Allentown to St. Louis with flexible booking policies on momondo?
Yes. All flights to St. Louis from Allentown on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Allentown to St. Louis?
Once you have performed a search for Allentown to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Allentown to St. Louis right now. Can momondo alert me if prices change?
Price alerts on flights to St. Louis from Allentown are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.