Cheap flights from Allentown to San Diego

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Find the cheapest month to fly from Allentown to San Diego

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

Alternative Allentown to San Diego routes

Looking for the cheapest, fastest or easiest route from Allentown to San Diego? You could fly into the following airports instead.

Allentown to San Diego: Flight information

The things to know before you go.
Cheapest flight found$237
Cheapest month to flyJune

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

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
The best price we found for a return flight from Allentown to San Diego is $487. 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 San Diego. But we found flights with one or more stops from $487.
As of May 2026, there are no flights flying from Allentown to San Diego.
The cheapest month to fly from Allentown to San Diego is usually November.
If you're flying from Allentown Airport, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from $487.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Allentown Airport to San Diego on Thursday, 12 November 2026.
No airlines currently offer direct flights between Allentown Airport and San Diego. 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 San Diego 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 San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 17°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
Currently, Delta offers the cheapest flight tickets to San Diego.

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

  • Lehigh Valley International Airport is located in Allentown. Based in the UTC-7 timezone, San Diego is three hours behind Allentown.

  • Give yourself plenty of time to get on your ABE to San Diego flight. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.

  • If you're heading away during a major holiday or another peak period, give yourself more time. A good rule is two hours ahead of domestic flights and up to four hours before international departures. Lines at security and check-in will be longer.

  • Located around 6 kilometres from central Allentown, ABE can be reached in about 10 minutes by car. The journey on public transport takes roughly 30 minutes.

  • Planning to catch an early flight from Lehigh Valley International Airport to San Diego? Avoid the last-minute rush to the terminal (and sneak in some extra snooze time) by choosing one of these hotels close to ABE:

  • When it comes to the on-time performance of Lehigh Valley International Airport, 78.8% of flights arrive within the scheduled time frame.

  • You'll find ABE at 3311 Airport Road.

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

  • The lowest price we've found for a one-way Lehigh Valley International Airport to San Diego flight is $237. The cheapest price for a return flight is $487. Remember fares can change due to demand at the time of booking.

  • To pick up cheap flights from ABE to San Diego, book early. Airlines typically offer lower fares when tickets are first released.

  • If you're willing to be flexible with your travel plans, try using the 'Whole month' search tool. It'll give you the cheapest price across each month when searching for a Lehigh Valley International Airport to San Diego ticket.

  • Cut down on the time spent looking for cheap flights from ABE to San Diego by setting up a Price Alert. You'll receive an email or push notification on the app when a lower fare becomes available.

  • Find a cheap flight from Lehigh Valley International Airport to San Diego with the help of our filters. Choose your ideal duration, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

Airports in San Diego

San Diego International Airport (SAN)

  • The distance from San Diego International Airport (SAN) to central San Diego is roughly 5 kilometres. It takes around 10 minutes to get to the centre driving.

  • If you're travelling by public transport, expect a journey time of about 20 minutes.

  • The last thing you need is a lengthy journey to your hotel if you're landing late on a flight from Lehigh Valley International Airport to San Diego. Book one of these accommodation options near SAN instead:

  • Go wherever you want, whenever you want with a San Diego International Airport rental car. Book your wheels from Thrifty, Dollar or Budget and chase adventure across San Diego and beyond.

  • To lock in the lowest price, reserve your ride from San Diego International Airport around two weeks ahead of your flight from ABE to San Diego.

  • You'll find SAN at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • The centre of San Diego is located around 56 kilometres from McClellan-Palomar Airport (CLD). After your flight from Lehigh Valley International Airport to San Diego has touched down and you've made your way through the terminal, expect a drive of around 40 minutes.

  • If you travel by public transport, you'll get to the city centre in 2 hours 15 minutes or so.

  • You'll find some great places ready to welcome you near CLD. Tuck yourself in and get cosy after your ABE to San Diego flight at any of these well-located options:

  • The fastest way to reach your destination is with a McClellan-Palomar Airport rental car. Collect your wheels from Budget, Hertz or Avis and be off and running.

  • Generally, the sooner you book, the better the prices and selection of vehicles. Secure your ride from CLD as soon as your plans are confirmed.

Best time to go to San Diego

  • Carefully consider your dates before locking in your flight from Lehigh Valley International Airport to San Diego. The city buzzes in peak season, but rates are usually higher and top attractions can be busy. Plan your trip to San Diego in the low season if you prefer a more relaxed vibe.

  • When booking your Lehigh Valley International Airport to San Diego plane ticket, think about the kind of weather forecast you're hoping for. August is the warmest month in San Diego, with temperatures ranging from 17ºC (63ºF) to 28ºC (82ºF).

  • Look for cheap tickets from ABE to San Diego in February if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 7ºC (45ºF) and 23ºC (73ºF) on average.

More about San Diego

  • When it comes to looking for somewhere to lay your head, you'll find the most popular stays in San Diego right here. Explore these options after you've booked your flight from Lehigh Valley International Airport to San Diego:

  • There are so many things to do and see in this city it can be hard to figure out where to start. USS Midway Museum, San Diego Zoo and SeaWorld San Diego are popular attractions which should be on every San Diego itinerary.

Explore more of United States

  • San Diego will leave a lasting impression, but there are so many other corners of United States waiting to be discovered. About 177 kilometres north-west of San Diego, a visit to Los Angeles will fill your itinerary to the brim. Start with leading attractions like Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • If you want to check out another corner of United States, consider Phoenix, about 483 kilometres east of San Diego. Desert Botanical Garden, Heard Museum and Papago Park are among the biggest draws.

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