SAN - ABE

$323 Find Cheap Flights from San Diego to Allentown

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to Allentown departing on 12/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Allentown

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Allentown, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Allentown, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$323
Delta
Tue 1/6Sat 1/10
SAN - ABE • 1 stop
Cheapest one-way
$321
Typical prices: $338-$543
Multiple Airlines
Tue 12/23
SAN - ABE • 2 stops
Top airlines
Delta
Cheapest • from $323 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Diego to Allentown (SAN-ABE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego to Allentown that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Diego to Allentown

Tue, Jan 6 - Sat, Jan 10
Delta Logo
6:30 am - 5:18 pm
SAN
-
ABE
7h 48m1 stop
Delta Logo
2:00 pm - 7:39 pm
ABE
-
SAN
8h 39m1 stop
$323Delta
Tue, Mar 31 - Tue, Apr 7
Delta Logo
6:15 am - 5:14 pm
SAN
-
ABE
7h 59m1 stop
Delta Logo
5:54 pm - 11:09 pm
ABE
-
SAN
8h 15m1 stop
$329Delta
Tue, Jan 6 - Sat, Jan 10
United Airlines Logo
6:00 pm - 10:41 am
SAN
-
ABE
13h 41m2 stops
United Airlines Logo
6:15 am - 11:48 am
ABE
-
SAN
8h 33m1 stop
$402United Airlines
Tue, Jan 6 - Sat, Jan 10
United Airlines Logo
7:52 pm - 10:41 am
SAN
-
ABE
11h 49m2 stops
United Airlines Logo
11:30 am - 11:42 pm
ABE
-
SAN
15h 12m2 stops
$407United Airlines
Tue, Mar 31 - Wed, Apr 8
Delta Logo
3:32 pm - 12:06 pm
SAN
-
ABE
17h 34m2 stops
Delta Logo
5:54 pm - 11:09 pm
ABE
-
SAN
8h 15m1 stop
$408Delta
Wed, Apr 1 - Tue, Apr 7
Delta Logo
6:15 am - 5:14 pm
SAN
-
ABE
7h 59m1 stop
Delta Logo
5:54 pm - 11:09 pm
ABE
-
SAN
8h 15m1 stop
$418Delta
Mon, Mar 30 - Sun, Apr 5
United Airlines Logo
10:25 pm - 10:08 am
SAN
-
ABE
8h 43m1 stop
United Airlines Logo
6:44 am - 11:25 am
ABE
-
SAN
7h 41m1 stop
$429United Airlines
Sat, Jan 17 - Wed, Jan 21
United Airlines Logo
4:10 pm - 4:22 pm
SAN
-
ABE
21h 12m2 stops
United Airlines Logo
6:15 am - 11:48 am
ABE
-
SAN
8h 33m1 stop
$430United Airlines
Mon, Mar 30 - Wed, Apr 8
Delta Logo
7:55 pm - 5:14 pm
SAN
-
ABE
18h 19m2 stops
Delta Logo
5:54 pm - 11:09 pm
ABE
-
SAN
8h 15m1 stop
$433Delta
Tue, Mar 31 - Sun, Apr 5
United Airlines Logo
8:40 pm - 10:08 am
SAN
-
ABE
10h 28m2 stops
United Airlines Logo
6:44 am - 11:25 am
ABE
-
SAN
7h 41m1 stop
$434United Airlines
Booking Insights

KAYAK's insights & trends for San Diego to Allentown flights

Get data-powered insights and trends into flights from San Diego to Allentown to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from San Diego to Allentown?

The average price of all round-trip flights from San Diego to Allentown clicked on KAYAK for each day over the last 12 months.

For San Diego to Allentown, Thursday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Allentown back to San Diego, the best deals are generally found on Tuesday, with Wednesday being the most expensive.

Good to know

Low seasonOctober
Cheapest flight$321
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from San Diego to Allentown

When to book flights from San Diego to Allentown

Are your dates flexible? Find out the best times to travel from San Diego to Allentown based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Diego to Allentown

  • What is the cheapest flight from San Diego to Allentown?

    In the last 3 days, the lowest price for a flight from San Diego to Allentown was $321 for a one-way ticket and $323 for a round-trip.

  • Do I need a passport to fly between San Diego and Allentown?

    No, a passport isn't needed to fly from San Diego to Allentown. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from San Diego to Allentown?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Diego to Allentown?

    SkyTeam, and oneworld are the airline alliances operating flights between San Diego and Allentown, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from San Diego to Allentown, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from San Diego to Allentown are Delta and American Airlines. With an average price for the route of $416 and an overall rating of 7.9, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $534 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from San Diego to Allentown?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Diego to Allentown.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to Allentown?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Allentown from San Diego is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Diego to Allentown?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Allentown with an airline and back to San Diego with another airline. Booking your flights between San Diego and ABE can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to Allentown?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Allentown from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from San Diego to Allentown

 
See real verified KAYAK customer reviews for airlines flying from San Diego to Allentown. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Diego to Allentown? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8010 reviews
8.1Boarding
7.9Entertainment
7.3Food
7.9Comfort
8.5Crew
Airline reviews

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

10.0 ExcellentMargaret, Dec 2025
BOS - PIT
Read more Delta reviews

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

the trip to madrid was uncomfortable with my legs touching the seat in front of me

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

Internet was a bit expensive and did not work ask that week otherwise a good flight

The flight had a delay that made me being in a real rush to take the second flight. The delay was almost for 2 hours. They moved us from gate to gate in 4 times. Once I arrived to Philadelphia, I got to run thorough all the airport, as the train was already closed by that time. So I got sick with asthma for all the running I had to do. And I was the last one to board, when it was almost closed. So irresponsable with the people

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

Cramped seats. FAA should make airlines have more legroom, for even short people complain

Everything you need to know for your flight from San Diego to Allentown

Information on your arrival and departure airports