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$169+ Cheap flights from San Francisco to Allentown (SFO - 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ABE
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from San Francisco to Allentown

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Allentown (ABE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2025.

Round-trip from

$389
(Kiwi.com)

One-way from

$169
(Delta)

Popular in

June

Cheapest in

August

Average price

$373
From San Francisco to Allentown-Bethlehem
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One-way flight from San Francisco to Allentown-Bethlehem
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Highest demand for flights based on searches. 13% potential increase in price ($80 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from San Francisco to Allentown

Cheapest flights from San Francisco to Allentown
Explore the most affordable flight options available from San Francisco to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/246:26 amSFO - ABE
2 stops10h 59mMultiple Airlines
Thu 8/287:00 amABE - SFO
1 stop20h 19mMultiple Airlines
Deal found 8/14$389
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:00 amSFO - ABE
1 stop8h 14mDelta
Tue 12/25:40 pmABE - SFO
2 stops18h 33mDelta
Deal found 8/14$406
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/236:34 amSFO - ABE
2 stops34h 51mMultiple Airlines
Thu 8/287:00 amABE - SFO
1 stop20h 19mMultiple Airlines
Deal found 8/13$416
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/258:58 amSFO - ABE
1 stop10h 51mAmerican Airlines
Sun 9/286:05 amABE - SFO
1 stop9h 11mAmerican Airlines
Deal found 8/13$429
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3011:35 amSFO - ABE
1 stop8h 04mDelta
Wed 9/32:30 pmABE - SFO
1 stop11h 09mDelta
Deal found 8/13$439
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:00 amSFO - ABE
1 stop8h 14mDelta
Fri 11/286:30 amABE - SFO
1 stop11h 17mDelta
Deal found 8/14$459
This American Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1611:50 pmSFO - ABE
2 stops10h 25mAmerican Airlines
Fri 11/285:42 pmABE - SFO
1 stop8h 20mAmerican Airlines
Deal found 8/14$474
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:00 amSFO - ABE
2 stops13h 52mDelta
Tue 12/25:40 pmABE - SFO
2 stops18h 33mDelta
Deal found 8/14$478
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:30 amSFO - ABE
1 stop7h 23mUnited Airlines
Sat 9/131:00 pmABE - SFO
1 stop9h 14mUnited Airlines
Deal found 8/14$484

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Allentown that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from San Francisco to Allentown that are best for you.

Fly from

San Francisco

Fly to

Allentown

Route

Depart

Return

Price

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Wed 9/10

7:10 am-4:05 pm

1 stop29h 55m

Allentown-Bethlehem

Sat 9/13

3:51 pm-10:43 am

2 stops45h 52m

$310

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Wed 9/24

7:10 am-4:05 pm

1 stop29h 55m

Allentown-Bethlehem

Mon 9/29

3:00 pm-9:21 pm

2 stops33h 21m

$351

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Wed 9/10

11:35 am-10:46 pm

1 stop8h 11m

Allentown-Bethlehem

Sat 9/13

6:00 am-11:43 am

1 stop8h 43m

$354

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Wed 8/27

6:50 am-3:13 pm

1 stop29h 23m

Allentown-Bethlehem

Sun 8/31

7:00 am-12:19 am

1 stop20h 19m

$368

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Wed 9/24

10:00 am-10:05 pm

1 stop9h 05m

Allentown-Bethlehem

Mon 9/29

6:00 am-11:30 am

1 stop8h 30m

$369

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Sun 8/24

6:26 am-8:25 pm

2 stops10h 59m

Allentown-Bethlehem

Thu 8/28

7:00 am-12:19 am

1 stop20h 19m

$389

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Wed 9/24

5:15 am-4:53 pm

1 stop8h 38m

Allentown-Bethlehem

Mon 9/29

5:28 pm-11:59 pm

1 stop9h 31m

$398

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Wed 9/10

5:15 am-4:53 pm

1 stop8h 38m

Allentown-Bethlehem

Sat 9/13

5:28 pm-10:34 pm

1 stop8h 06m

$409

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Sat 8/23

6:34 am-8:25 pm

2 stops34h 51m

Allentown-Bethlehem

Thu 8/28

7:00 am-12:19 am

1 stop20h 19m

$416

San FranciscoAllentown

SFO - ABE

SFOABE

San Francisco

Thu 9/25

8:58 am-10:49 pm

1 stop10h 51m

Allentown-Bethlehem

Mon 9/29

6:00 am-11:30 am

1 stop8h 30m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 19 results
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Best time to book a flight from San Francisco to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from San Francisco 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 Francisco to Allentown

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

Currently, February is the cheapest month in which you can book a flight from San Francisco to Allentown (average of $289). Flying from San Francisco to Allentown in December is currently the most expensive (average of $395). 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.

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

Find hourly flight availability from San Francisco to Allentown. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

When flying from San Francisco to Allentown, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 11% versus a flight in the morning.

Reviews of airlines servicing Allentown

Get insights into the airlines that provide service to Allentown. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Allentown. Reviews last updated August 14, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from San Francisco to Allentown by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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
United Airlines
7.4
Good
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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

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

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

    Our cheapest airline available from San Francisco to Allentown is American Airlines. Our recent data shows that you can find tickets from as low as $276 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $326 and $413 round-trip. American Airlines is 44% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

  • How can I find direct flights from San Francisco to Allentown?

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

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

    Yes. Cheapflights offers flight deals from San Francisco 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 Francisco to Allentown?

    Currently, February is the cheapest month in which you can book a flight from San Francisco to Allentown (average of $289). Flying from San Francisco to Allentown in December is currently the most expensive (average of $395). 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

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Top 3 airlines flying from San Francisco to Allentown

Discover the top 3 airlines that operate flights from San Francisco to Allentown. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$276Average$484FlexibilityNo cancel feeOn-time71%
DeltaCheapest$326Average$453FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$413Average$568FlexibilityNo cancel feeOn-time69%

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