How long is the flight from San Diego to Allentown?

Airlines like United Airlines and American Airlines fly from San Diego to Allentown in about 8h 18m. The time it takes to get you to your destination can typically vary by up to 52m. Airlines will cover a distance of 2353 mi. This flight may include one or multiple stops.

What are the cheapest airlines flying from San Diego to Allentown round-trip?

Flying on Delta is currently your cheapest option to Allentown, with prices starting at $305. Another option worth looking into is American Airlines, starting at $310 round trip. Users have found that Delta is 32% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from San Diego to Allentown one-way?

One-way options have recently been found by users for as low as $178 on Delta. Other airlines that offer cheap prices include United Airlines from $184 and American Airlines from $201 one-way.

In terms of precipitation, rainfall in Allentown ranges from 2.7 - 5.0 inches per month. July is typically the wettest month, when rainfall can reach 5.0 in. February is typically the driest time to visit Allentown when rainfall is around 2.7 in.

If weather is an important factor for your trip to Allentown, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

What is the cheapest time of day to fly from SAN to ABE?

When flying from San Diego to Allentown, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on San Diego-Allentown flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Diego-Allentown flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Diego-Allentown flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on San Diego-Allentown flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Allentown flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from San Diego to Allentown that include hotel bookings?

Yes. In addition to deals on San Diego to Allentown flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San Diego to Allentown?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Allentown.

Can I find deals for business class flights from San Diego to Allentown?

Yes. Cheapflights offers flight deals from San Diego to Allentown by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$229+ Flights from San Diego to Allentown

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from San Diego to Allentown with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from San Diego to Allentown

Cheapest flights from San Diego to Allentown
Explore the most affordable flight options available from San Diego to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 27, 2025.

Mon 12/296:15 amSAN - ABE

1 stop8h 09mDelta

Wed 12/312:00 pmABE - SAN

1 stop9h 56mDelta

Deal found 12/26

$710

Mon 12/2910:56 amSAN - ABE

1 stop7h 51mUnited Airlines

Wed 12/316:17 amABE - SAN

1 stop8h 13mUnited Airlines

Deal found 12/27

$990

Best flights from San Diego to Allentown
Discover carefully curated flight deals from San Diego to Allentown that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 27, 2025.

Tue 4/2110:40 pmSAN - ABE

1 stop8h 18mUnited Airlines

Tue 4/2810:35 amABE - SAN

2 stops13h 04mUnited Airlines

Deal found 12/26

$334

Tue 4/2112:05 pmSAN - ABE

1 stop9h 10mAmerican Airlines

Tue 4/286:30 amABE - SAN

1 stop7h 28mAmerican Airlines

Deal found 12/26

$341

Fri 2/276:10 pmSAN - ABE

2 stops14h 40mUnited Airlines

Mon 3/25:23 pmABE - SAN

1 stop8h 21mUnited Airlines

Deal found 12/26

$376

Sat 1/108:37 pmSAN - ABE

2 stops11h 04mUnited Airlines

Wed 1/146:15 amABE - SAN

1 stop8h 33mUnited Airlines

Deal found 12/26

$394

Wed 1/2110:52 amSAN - ABE

1 stop7h 13mUnited Airlines

Sat 1/246:15 amABE - SAN

1 stop8h 33mUnited Airlines

Deal found 12/23

$429

Last-minute flights from San Diego to Allentown
Discover last-minute flight deals from San Diego to Allentown. Data last updated December 27, 2025 and is based on user searches.

Sat 1/108:37 pmSAN - ABE

2 stops11h 04mUnited Airlines

Wed 1/146:15 amABE - SAN

1 stop8h 33mUnited Airlines

Deal found 12/26

$394

Wed 1/2110:52 amSAN - ABE

1 stop7h 13mUnited Airlines

Sat 1/246:15 amABE - SAN

1 stop8h 33mUnited Airlines

Deal found 12/24

$429

One-way flights from San Diego to Allentown
Search for one-way flight options from San Diego to Allentown. Find affordable one-way fares based on user searches. Data last updated December 27, 2025.

Thu 5/2811:00 amSAN - ABE

1 stop8h 56mDelta

Deal found 12/26

$229

Wed 12/3111:25 amSAN - ABE

1 stop8h 21mDelta

Deal found 12/25

$243

Tue 1/66:30 amSAN - ABE

1 stop7h 48mDelta

Deal found 12/23

$279

Thu 1/16:30 amSAN - ABE

2 stops12h 17mUnited Airlines

Deal found 12/24

$298

Fri 1/911:11 amSAN - ABE

1 stop8h 39mDelta

Deal found 12/23

$340

Thu 1/111:25 amSAN - ABE

1 stop8h 21mDelta

Deal found 12/26

$380

Sun 5/3111:00 amSAN - ABE

1 stop8h 56mDelta

Deal found 12/24

$450

Thu 5/281:58 pmSAN - ABE

2 stops24h 03mUnited Airlines

Deal found 12/26

$453

Wed 12/315:40 pmSAN - ABE

3 stops19h 50mUnited Airlines

Deal found 12/25

$463

Find flight deals from San Diego to Allentown

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$334 (United Airlines)
One-way from	$229 (Delta)
Popular in	December
Cheapest in	October
Average price	$606

Provider with most accurate pricing for San Diego-Allentown-Bethlehem flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Diego-Allentown-Bethlehem flights.

Search Deals

From San Diego to Allentown-Bethlehem

Search Deals

One-way flight from San Diego to Allentown-Bethlehem

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($55 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Diego to Allentown that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Tue 4/21

10:40 pm-9:58 am

1 stop8h 18m

Allentown-Bethlehem

Tue 4/28

10:35 am-8:39 pm

2 stops13h 04m

$334

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Tue 4/21

12:05 pm-12:15 am

1 stop9h 10m

Allentown-Bethlehem

Tue 4/28

6:30 am-10:58 am

1 stop7h 28m

$341

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Fri 2/27

6:10 pm-11:50 am

2 stops14h 40m

Allentown-Bethlehem

Mon 3/2

5:23 pm-10:44 pm

1 stop8h 21m

$376

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Sat 1/10

8:37 pm-10:41 am

2 stops11h 04m

Allentown-Bethlehem

Wed 1/14

6:15 am-11:48 am

1 stop8h 33m

$394

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Wed 1/21

10:52 am-9:05 pm

1 stop7h 13m

Allentown-Bethlehem

Sat 1/24

6:15 am-11:48 am

1 stop8h 33m

$429

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Thu 5/28

11:00 am-10:56 pm

1 stop8h 56m

$229

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Wed 12/31

11:25 am-10:46 pm

1 stop8h 21m

$243

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Sun 1/11

6:30 am-5:18 pm

1 stop7h 48m

$279

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Tue 1/6

6:30 am-5:18 pm

1 stop7h 48m

$279

San DiegoAllentown

SAN - ABE

SANABE

San Diego

Thu 1/1

6:30 am-9:47 pm

2 stops12h 17m

$298

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 14 results

Compare providers for flights from San Diego to Allentown

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Allentown in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on San Diego-Allentown flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Diego-Allentown flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Diego-Allentown flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San Diego-Allentown flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Allentown flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Diego to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from San Diego with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from San Diego to Allentown?

Currently, June is the cheapest month in which you can book a flight from San Diego to Allentown (average of $78). Flying from San Diego to Allentown in July is currently the most expensive (average of $178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Allentown

Read reviews from past customers who have flown Delta and American Airlines from San Diego to Allentown. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

8,018 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Delta

7.9

Good

8,018 reviews

Delta

7.9

Good

8,018 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

American Airlines

7.2

Good

11,067 reviews

Delta

7.9

Good

8,018 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

How long is the flight from San Diego to Allentown?
Airlines like United Airlines and American Airlines fly from San Diego to Allentown in about 8h 18m. The time it takes to get you to your destination can typically vary by up to 52m. Airlines will cover a distance of 2353 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from San Diego to Allentown round-trip?
Flying on Delta is currently your cheapest option to Allentown, with prices starting at $305. Another option worth looking into is American Airlines, starting at $310 round trip. Users have found that Delta is 32% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from San Diego to Allentown one-way?
One-way options have recently been found by users for as low as $178 on Delta. Other airlines that offer cheap prices include United Airlines from $184 and American Airlines from $201 one-way.
Can I find deals for flights from San Diego to Allentown that include hotel bookings?
Yes. In addition to deals on San Diego to Allentown flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Diego to Allentown?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Allentown.
Can I find deals for business class flights from San Diego to Allentown?
Yes. Cheapflights offers flight deals from San Diego to Allentown by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Diego to Allentown?
Currently, June is the cheapest month in which you can book a flight from San Diego to Allentown (average of $78). Flying from San Diego to Allentown in July is currently the most expensive (average of $178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Other flights to Allentown

Alternative routes for San Diego to Allentown

Los Angeles to John F Kennedy Intl flights

Los Angeles to Newark flights

San Francisco to John F Kennedy Intl flights

Los Angeles to LaGuardia flights

San Francisco to Newark flights

San Francisco to LaGuardia flights

Los Angeles to Reagan-National flights

Ontario to John F Kennedy Intl flights

San Diego to John F Kennedy Intl flights

Los Angeles to Dulles Intl flights

Burbank to LaGuardia flights

San Diego to Newark flights

Las Vegas to John F Kennedy Intl flights

Ontario to Newark flights

Ontario to LaGuardia flights

San Francisco to Reagan-National flights

San Francisco to Philadelphia flights

Las Vegas to Newark flights

San Diego to LaGuardia flights

Santa Ana to LaGuardia flights

San Francisco to Dulles Intl flights

Los Angeles to Philadelphia flights

Santa Ana to John F Kennedy Intl flights

Santa Ana to Newark flights

Sacramento to Newark flights

Las Vegas to LaGuardia flights

Sacramento to John F Kennedy Intl flights

San Jose to John F Kennedy Intl flights

San Diego to Dulles Intl flights

Oakland to Newark flights

Oakland to John F Kennedy Intl flights

San Jose to Newark flights

Sacramento to LaGuardia flights

Sacramento to Dulles Intl flights

Ontario to Dulles Intl flights

Burbank to John F Kennedy Intl flights

Ontario to Reagan-National flights

San Diego to Reagan-National flights

San Jose to LaGuardia flights

Fresno to John F Kennedy Intl flights

San Francisco to Pittsburgh flights

Burbank to Newark flights

Las Vegas to Dulles Intl flights

San Diego to Philadelphia flights

Los Angeles to Pittsburgh flights

Fresno to Newark flights

Fresno to LaGuardia flights

Oakland to LaGuardia flights

Ontario to Philadelphia flights

Las Vegas to Philadelphia flights

Complete your trip

Allentown car rentals

Newark Airport car rentals

Philadelphia Airport car rentals

Wilkes-Barre Scranton Airport car rentals

Trenton-Mercer Airport car rentals

Philadelphia car rentals

Pittsburgh car rentals

Lancaster car rentals

Harrisburg car rentals

DuBois car rentals

Scranton car rentals

State College car rentals

Top 2 airlines flying from San Diego to Allentown

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$305	Average$416	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$310	Average$534	FlexibilityNo cancel fee	On-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$229+ Cheap flights from San Diego to Allentown (SAN - ABE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Diego to Allentown with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from San Diego to Allentown

Cheapest flights from San Diego to AllentownExplore the most affordable flight options available from San Diego to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 27, 2025.

Explore the most affordable flight options available from San Diego to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 27, 2025.

Find flight deals from San Diego to Allentown

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Diego to Allentown that are best for you.

Compare providers for flights from San Diego to Allentown

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Allentown in December.

Best time to book a flight from San Diego to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from San Diego with our price prediction graph.

Cheapflights Insights

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

What is the cheapest month to book a flight from San Diego to Allentown?

Reviews of airlines servicing Allentown

Read reviews from past customers who have flown Delta and American Airlines from San Diego to Allentown. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Allentown. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from San Diego to Allentown?

What are the cheapest airlines flying from San Diego to Allentown round-trip?

What are the cheapest airlines to fly from San Diego to Allentown one-way?

Can I find deals for flights from San Diego to Allentown that include hotel bookings?

How can I find direct flights from San Diego to Allentown?

Can I find deals for business class flights from San Diego to Allentown?

What is the cheapest month to book a flight from San Diego to Allentown?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Other flights to Allentown

Explore flights to Allentown departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on December 27, 2025.

Top 2 airlines flying from San Diego to Allentown

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from San Diego to Allentown
Explore the most affordable flight options available from San Diego to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 27, 2025.