Cheap Flights from San Diego to Allentown

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Find the cheapest month or even day of the year to fly to Allentown

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Flight deals from San Diego to Allentown

Looking for a cheap last-minute deal or the best return flight from San Diego to Allentown Airport? If you want to travel next month, return fares start from R 7,769. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from San Diego to Allentown

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

San Diego to Allentown: Flight information

The things to know before you go.
Cheapest flight foundR 4,283
Cheapest month to flyJuly

Finding cheap flights from San Diego to Allentown: Frequently asked questions

The best price we found for a return flight from San Diego to Allentown is R 7,286. 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 San Diego to Allentown. But we found flights with one stop from R 7,286.
As of June 2026, there are no flights flying from San Diego to Allentown.
The cheapest month to fly from San Diego to Allentown is usually July.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Diego to Allentown Airport on Friday, 31 July 2026.
No airlines currently offer direct flights between San Diego and Allentown 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 Allentown 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 Allentown is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Allentown is Delta .

Travelling from San Diego to Lehigh Valley International Airport (ABE): What you need to know

  • The timezone in Allentown is UTC-5, which is three hours ahead of San Diego. Lehigh Valley International Airport is located in Allentown.

  • Your flight from San Diego to ABE won't wait if you're late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.

  • With more travellers during busy periods like July, get to the terminal earlier than usual. Two hours for domestic flights and as much as four for international journeys will help you stay ahead of the crowds. Remember things also get busy during major holidays like Fourth of July.

Airports in San Diego

San Diego International Airport (SAN)

  • The journey from central San Diego to SAN takes about 25 minutes by public transport. If you drive, ride-share or get a taxi, you'll cover the 5 kilometres in 15 minutes or so, depending on traffic conditions.

  • Planning to catch an early flight from San Diego to Lehigh Valley International Airport? Avoid the stress of rushing to the terminal (and enjoy a few extra z's) by staying at one of these hotels near San Diego International Airport:

  • Of all flights leaving San Diego International Airport, 74% arrive on time at their destination.

  • You'll find SAN at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • From central San Diego, CLD is roughly 48 kilometres away. When planning your route, check whether public transport is available or if it's more convenient to drive.

  • Catching an early morning flight? Think about checking in to one of these hotels near McClellan-Palomar Airport the day before your San Diego to ABE flight:

  • Flights from McClellan-Palomar Airport have a proven record for punctuality, with 88% of them landing within the expected time frame.

About Lehigh Valley International Airport (ABE)

Getting from Lehigh Valley International Airport (ABE) to central Allentown

  • Central Allentown is around 13 kilometres from Lehigh Valley International Airport and takes about 20 minutes to reach by car. Look into how to get from the airport to the city, whether that's with a taxi, car hire or ride-share.

  • Travelling by public transport takes roughly 45 minutes.

How to find the cheapest flights from San Diego to Lehigh Valley International Airport (ABE)

  • The cheapest price we've found for a one-way ticket from San Diego to Lehigh Valley International Airport is R 4,283. For a return flight on this route, the best price is R 7,286. Depending on when you want to go and the availability, these fares may change.

  • To find cheap flights from San Diego to ABE, book in advance. Airlines generally offer lower fares when tickets first go on sale.

  • If you can be flexible with your trip dates, use the 'Whole month' tool. It'll show you the cheapest price in each month when searching for your San Diego to Lehigh Valley International Airport ticket.

  • Save time looking for cheap plane tickets from San Diego to ABE by setting up a Price Alert. We'll send you an email or notification on the app when prices go down.

  • Find a cheap flight from San Diego to Lehigh Valley International Airport by using the search filters. Select your preferred times, airlines and number of stops, then sort the results by 'Cheapest' for the best deals.

The best time to fly from San Diego to Lehigh Valley International Airport (ABE)

  • It's time to work out your travel dates for your flight from San Diego to Lehigh Valley International Airport (ABE). July is the busiest month to visit Allentown. If crowds aren't your thing, head there in September.

  • The warmest month in Allentown is July, with temperatures ranging between 15ºC (59ºF) and 30ºC (86ºF). Book your San Diego to ABE plane ticket then if you enjoy this type of weather.

  • Search for cheap tickets from San Diego to Lehigh Valley International Airport in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -9ºC (16ºF) and 7ºC (45ºF).

More about Allentown

  • After booking your flight from San Diego to Lehigh Valley International Airport, choose a hotel that puts you where you want to be. Make one of these accommodation options your base for exploring Allentown:

  • There are so many things to see and do in this city, it can be hard to work out where to start. Allentown Art Museum, Allentown Passenger Station Historic Site - Lehigh Valley Railroad and America On Wheels Museum are leading attractions which should be on every Allentown itinerary.

Explore more of the United States

  • You've visited Allentown, now it's time to explore other parts of the United States. Travel around 121 kilometres east to New York to check off its top attractions. From Central Park to Statue of Liberty and Metropolitan Museum of Art, there's plenty to keep you on the go.

  • Around 177 kilometres southwest of Allentown, Baltimore is another favourite stop in the United States. Experience this destination's highlights firsthand at National Aquarium, Baltimore Aquarium and Washington Monument and Mount Vernon Place.

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