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

Compare Allentown to St Louis flight deals

Find the cheapest month or even day of the year to fly to St Louis

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Find the cheapest month to fly from Allentown to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Allentown to St Louis flights are currently cheapest in April.

Allentown to St Louis: Alternative routes

Compare routes from Allentown to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Allentown to St Louis: Flight information

The things to know before you go.
Cheapest flight found£259
Cheapest month to flyApril

Finding cheap flights from Allentown to St Louis: Frequently asked questions

The best price we found for a return flight from Allentown to St Louis is £259. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Allentown to St Louis. But we found flights with one or more stops from £259.
As of February 2026, there are no flights flying from Allentown to St Louis.
The cheapest month to fly from Allentown to St Louis is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Allentown Airport to St Louis Airport on Monday, 20 April 2026.
No airlines currently offer direct flights between Allentown Airport and St Louis Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Allegiant Air offers the cheapest flight tickets to St Louis.

Flying from Lehigh Valley International Airport (ABE) to Lambert-St. Louis International Airport (STL): what you need to know

  • St Louis's timezone is UTC-5, which makes St Louis one hour behind Allentown.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Be at the airport on time to board your ABE to STL flight.

  • Flying during a peak time like July? Major public holidays and other popular seasons can mean longer queues and delays at airport checkpoints. Play it safe and get there up to four hours before international flights and two hours before domestic departures.

  • Think about adding a stopover when booking your ticket from Lehigh Valley International Airport to Lambert-St. Louis International Airport. Just uncheck 'Direct flights only' to break up your trip, or visit a new city along the way. Check out these options between ABE and STL:

    • O'Hare International Airport

    • Charlotte Douglas International Airport

    • Hartsfield-Jackson Atlanta International Airport

How to find the cheapest flights from Lehigh Valley International Airport (ABE) to Lambert-St. Louis International Airport (STL)

  • The lowest price we've seen for a one-way Lehigh Valley International Airport to Lambert-St. Louis International Airport flight is £118. A return ticket right now is £259. Depending on the availability when you book, these fares may change.

  • To pick up cheap tickets from ABE to STL, book early. Airlines tend to offer their best fares when flights are first made available.

  • The 'Whole month' search function shows you the cheapest flights from Lehigh Valley International Airport to Lambert-St. Louis International Airport across every month. It's a great way to find a bargain if your plans are flexible.

  • You won't have to check every day to see if fares have dropped when you create a Price Alert. We'll let you know the moment a special offer becomes available on cheap flights from ABE to STL.

  • Secure the ideal flight for you by using the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Lehigh Valley International Airport to Lambert-St. Louis International Airport, use the 'Sort by' tool. You can also filter by arrival and departure times, airline, and journey duration.

Handy information about Lehigh Valley International Airport (ABE)

  • ABE's address is 3311 Airport Road.

  • Of the departures from Lehigh Valley International Airport, 78.8% land on schedule at their destination.

  • Central Allentown to Lehigh Valley International Airport is around 5 miles. Depending on traffic, it'll take you about 10 minutes to get there if you're catching a cab, ride-sharing or driving.

  • The journey when using public transport takes about 30 minutes.

  • Searching for a handy hotel close to ABE? If you've booked an early flight from Lehigh Valley International Airport to Lambert-St. Louis International Airport, these accommodation options will have you sleeping moments from check-in:

Arriving at Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • The street address for STL is 10701 Lambert International Blvd..

  • Lambert-St. Louis International Airport is roughly 16 miles from the centre of St Louis. Driving there takes about 20 minutes.

  • Getting there by public transport takes about 35 minutes.

When to fly to Lambert-St. Louis International Airport (STL)

  • The quietest month for a flight from Lehigh Valley International Airport to Lambert-St. Louis International Airport is April, while July is the busiest. Pick the ideal time to visit St Louis based on whether you prefer a more fast-paced or easygoing experience.

  • The warmest month in St Louis is July, with temperatures ranging between 17ºC (63ºF) and 33ºC (91ºF). Lock in your flights from Lehigh Valley International Airport to Lambert-St. Louis International Airport in this month if this is the type of weather you like.

  • January has average temperatures of between -8ºC (18ºF) and 7ºC (45ºF). Look for cheap tickets from ABE to STL around that time if you want to travel in cooler conditions.

Explore more of United States

  • Chicago is just one of the many places in United States waiting to be explored after you've experienced St Louis. Around 260 miles away to the north-east, well-known attractions include Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.

  • Indianapolis is another well-known destination in United States and is around 230 miles east of St Louis. No trip is complete without a visit to The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.