SAN - ABE

$174 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 3/25. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$365
Delta
Tue 3/31Tue 4/28
SAN - ABE • 1 stop
Cheapest one-way
$174
Multiple Airlines
Wed 3/25
SAN - ABE • 3 stops
Top airlines
Delta
Cheapest • from $365 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Allentown!
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, Mar 31 - Tue, Apr 28
Delta Logo
6:15 am - 5:17 pm
SAN
-
ABE
8h 02m
1 stop
Delta Logo
12:52 pm - 6:39 pm
ABE
-
SAN
8h 47m
1 stop
$365Delta
Tue, Mar 31 - Mon, Apr 27
Delta Logo
6:15 am - 5:17 pm
SAN
-
ABE
8h 02m
1 stop
Delta Logo
5:59 pm - 11:25 pm
ABE
-
SAN
8h 26m
1 stop
$385Delta
Thu, Apr 2 - Sat, Apr 25
American Airlines Logo
1:37 pm - 12:29 am
SAN
-
ABE
7h 52m
1 stop
American Airlines Logo
6:04 am - 11:09 am
ABE
-
SAN
8h 05m
1 stop
$403American Airlines
Wed, Apr 1 - Sat, Apr 25
Delta Logo
6:15 am - 5:17 pm
SAN
-
ABE
8h 02m
1 stop
Delta Logo
12:52 pm - 7:40 pm
ABE
-
SAN
9h 48m
1 stop
$432Delta
Tue, Mar 31 - Tue, Apr 28
Delta Logo
6:15 am - 5:17 pm
SAN
-
ABE
8h 02m
1 stop
Delta Logo
5:59 pm - 9:24 am
ABE
-
SAN
18h 25m
2 stops
$444Delta
Wed, Apr 1 - Mon, Apr 27
Delta Logo
6:15 am - 5:17 pm
SAN
-
ABE
8h 02m
1 stop
Delta Logo
5:59 pm - 11:25 pm
ABE
-
SAN
8h 26m
1 stop
$452Delta
Wed, Apr 1 - Fri, Apr 24
Delta Logo
6:15 am - 5:17 pm
SAN
-
ABE
8h 02m
1 stop
Delta Logo
5:59 pm - 11:25 pm
ABE
-
SAN
8h 26m
1 stop
$453Delta
Sun, Apr 5 - Mon, Apr 27
United Airlines Logo
8:39 pm - 9:58 am
SAN
-
ABE
10h 19m
2 stops
United Airlines Logo
5:38 pm - 10:59 pm
ABE
-
SAN
8h 21m
1 stop
$464United Airlines
Sun, Apr 5 - Wed, Apr 22
United Airlines Logo
8:39 pm - 9:58 am
SAN
-
ABE
10h 19m
2 stops
United Airlines Logo
10:35 am - 9:22 pm
ABE
-
SAN
13h 47m
2 stops
$469United Airlines
Tue, Mar 31 - Wed, Apr 22
American Airlines Logo
7:52 pm - 11:30 am
SAN
-
ABE
12h 38m
2 stops
American Airlines Logo
12:00 pm - 9:41 pm
ABE
-
SAN
12h 41m
2 stops
$472American 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.

Which airlines provide the cheapest flights from San Diego to Allentown?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from San Diego to Allentown were found on Delta ($365) and American Airlines ($403).

Good to know

Low seasonOctober
Cheapest flight$174
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly with an average 2% 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 $174 for a one-way ticket and $365 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 $448 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 $486 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 8126 reviews
8.1Boarding
7.9Comfort
7.8Entertainment
8.5Crew
7.2Food
Airline reviews

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

10.0 ExcellentDr. Simon, Jan 2026
LAX - JFK
Read more Delta reviews

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

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.

The attendants were kind and helpful. A sugar-free drink would have been very welcome.

The entertainment options were at best, fair. It was exactly the same as my outbound flight. It would have been more entertaining if there were some series from Apple TV, HBO, Showtime or other carriers for me to catch up with.

The seat cushions were very worn so they were extremely uncomfortable.

Crew were all friendly and helpful. It was a short flight so just a beverage service with a cookie. After we were boarded the plane took about 45 minutes to leave the gate but it was New Year’s Eve so not shocking there was some delay. Overall good experience and very grateful.

Flight was on time is the only good thing. Person loading the plane called 1-6 to board at the same time, made it chaotic. Plane was too small for even putting backpacks in overhead. Seat for normal sized people were too small. The WIFI didn't work. When we landed had to wait because not enough ground crew.

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.

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

Information on your arrival and departure airports