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$179+ Cheap flights from Allentown to San Francisco (ABE - SFO)

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 2/17. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — SFO
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from Allentown to San Francisco

Cheapest flights from Allentown to San Francisco
Explore the most affordable flight options available from Allentown to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Delta deal was found by Cheapflights users on 1/25. 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 2/175:58 pm
ABE
-
SFO
1 stop8h 51m
Delta
Mon 2/2310:50 pm
SFO
-
ABE
1 stop10h 15m
Delta
Deal found 1/25$309
This Delta deal was found by Cheapflights users on 1/25. 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 4/112:57 pm
ABE
-
SFO
1 stop10h 36m
Delta
Mon 4/611:35 pm
SFO
-
ABE
1 stop9h 41m
Delta
Deal found 1/25$331
This Delta deal was found by Cheapflights users on 1/25. 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.
Fri 3/65:58 pm
ABE
-
SFO
1 stop8h 51m
Delta
Tue 3/1011:35 pm
SFO
-
ABE
1 stop9h 41m
Delta
Deal found 1/25$333
This Delta deal was found by Cheapflights users on 1/25. 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.
Fri 2/1312:47 pm
ABE
-
SFO
1 stop10h 09m
Delta
Mon 2/2310:50 pm
SFO
-
ABE
1 stop10h 15m
Delta
Deal found 1/25$349
This Delta deal was found by Cheapflights users on 1/25. 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 2/175:58 pm
ABE
-
SFO
1 stop8h 51m
Delta
Fri 2/2010:50 pm
SFO
-
ABE
1 stop10h 15m
Delta
Deal found 1/25$357
This Delta deal was found by Cheapflights users on 1/25. 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 2/175:58 pm
ABE
-
SFO
1 stop8h 51m
Delta
Sat 2/216:05 am
SFO
-
ABE
1 stop8h 07m
Delta
Deal found 1/25$364
This Delta deal was found by Cheapflights users on 1/25. 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 2/175:58 pm
ABE
-
SFO
1 stop8h 51m
Delta
Tue 2/244:02 pm
SFO
-
ABE
2 stops17h 03m
Delta
Deal found 1/25$367
This Delta deal was found by Cheapflights users on 1/25. 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.
Fri 2/1312:47 pm
ABE
-
SFO
1 stop10h 09m
Delta
Fri 2/2010:50 pm
SFO
-
ABE
1 stop10h 15m
Delta
Deal found 1/25$373
This Delta deal was found by Cheapflights users on 1/25. 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.
Mon 3/305:58 pm
ABE
-
SFO
1 stop9h 37m
Delta
Thu 4/27:00 am
SFO
-
ABE
1 stop7h 17m
Delta
Deal found 1/25$388
This American Airlines deal was found by Cheapflights users on 1/26. 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.
Tue 2/107:30 am
ABE
-
SFO
1 stop9h 20m
American Airlines
Sat 2/141:17 pm
SFO
-
ABE
1 stop8h 12m
American Airlines
Deal found 1/26$389
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Thu 2/126:28 am
ABE
-
SFO
1 stop8h 40m
United Airlines
Tue 2/1711:59 pm
SFO
-
ABE
1 stop7h 02m
United Airlines
Deal found 1/25$397

Find flight deals from Allentown to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to San Francisco (SFO). 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$309
(Delta)

One-way from

$179
(Delta)

Popular in

December

Cheapest in

May

Average price

$500
Provider with most accurate pricing for Allentown-Bethlehem-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Allentown-Bethlehem-San Francisco flights.
Search Deals
From Allentown-Bethlehem to San Francisco
Search Deals
One-way flight from Allentown-Bethlehem to San Francisco
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($77 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Allentown to San Francisco 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 January 27, 2026.
Use the filters below to find and compare flights from Allentown to San Francisco that are best for you.

Fly from

Allentown

Fly to

San Francisco

Route

Depart

Return

Price

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Fri 3/6

5:58 pm-11:49 pm

1 stop8h 51m

San Francisco

Tue 3/10

11:35 pm-12:16 pm

1 stop9h 41m

$333

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Mon 3/30

5:58 pm-12:35 am

1 stop9h 37m

San Francisco

Mon 4/6

11:35 pm-12:16 pm

1 stop9h 41m

$333

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Sat 2/14

2:00 pm-7:56 pm

1 stop8h 56m

San Francisco

Mon 2/23

10:50 pm-12:05 pm

1 stop10h 15m

$349

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Tue 2/17

5:58 pm-11:49 pm

1 stop8h 51m

San Francisco

Fri 2/20

10:50 pm-12:05 pm

1 stop10h 15m

$357

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Tue 2/17

5:58 pm-11:49 pm

1 stop8h 51m

San Francisco

Sat 2/21

6:05 am-5:12 pm

1 stop8h 07m

$364

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Fri 2/13

12:47 pm-7:56 pm

1 stop10h 09m

San Francisco

Fri 2/20

10:50 pm-12:05 pm

1 stop10h 15m

$373

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Thu 2/12

6:28 am-12:08 pm

1 stop8h 40m

San Francisco

Tue 2/17

11:59 pm-10:01 am

1 stop7h 02m

$397

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Fri 2/13

12:00 pm-5:48 pm

1 stop8h 48m

San Francisco

Mon 2/16

12:25 am-12:20 pm

1 stop8h 55m

$399

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Thu 2/19

6:04 am-12:17 pm

1 stop9h 13m

San Francisco

Tue 2/24

12:31 pm-11:31 pm

1 stop8h 00m

$399

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Fri 2/13

12:47 pm-7:56 pm

1 stop10h 09m

San Francisco

Sat 2/21

6:05 am-5:12 pm

1 stop8h 07m

$404

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 22 results
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Compare providers for flights from Allentown to San Francisco

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 Allentown to San Francisco in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

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

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

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

Currently, February is the cheapest month in which you can book a flight from Allentown to San Francisco (average of $114). Flying from Allentown to San Francisco in November is currently the most expensive (average of $237). 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 San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated January 27, 2026.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Allentown to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,118 reviews

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
7.9
Good
8,118 reviews
Delta
7.9
Good
8,118 reviews

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
9,205 reviews
Delta
7.9
Good
8,118 reviews

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
11,197 reviews
Delta
7.9
Good
8,118 reviews

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Allentown to San Francisco. 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 Allentown to San Francisco?

    For as low as $333, Delta can have you in San Francisco from Allentown in 8h 51m. There are 2493 mi between Allentown and San Francisco.

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

    Delta, at $269, was found to be the cheapest airline from Allentown to San Francisco.Alternate airlines to your destination round-trip include United Airlines and American Airlines. Delta is currently priced 35% below the average price you’ll pay for this route.

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

    One-way options have recently been found by users for as low as $158 on American Airlines. Other airlines that offer cheap prices include Delta from $168 and United Airlines from $195 one-way.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Allentown to San Francisco (average of $114). Flying from Allentown to San Francisco in November is currently the most expensive (average of $237). 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
South San Francisco
Santa Cruz
Roseville
Santa Clara
Livermore
Watsonville
San Bruno
Daly City
Sunnyvale
Turlock
Vacaville
San Carlos
San Ramon
Manteca
Vallejo
San Lorenzo
Davis
Hollister
Redwood City
Union City

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Allentown to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Allentown to San Francisco

Discover the top 3 airlines that operate flights from Allentown to San Francisco. 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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$269Average$368FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$311Average$474FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$323Average$403FlexibilityNo cancel feeOn-time71%

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