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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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — SFO
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Allentown-Bethlehem to San Francisco are usually found in November or May, booked 75 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap 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 September 11, 2025.

Round-trip from

$333
(Delta)

One-way from

$179
(Delta)

Popular in

April

Cheapest in

November

Average price

$378
From Allentown-Bethlehem to San Francisco
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One-way flight from Allentown-Bethlehem to San Francisco
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Highest demand for flights based on searches. 0% potential increase in price ($1 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This Delta deal was found by Cheapflights users on 9/11. 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 10/246:00 pmABE - SFO
1 stop9h 05mDelta
Wed 10/296:10 amSFO - ABE
1 stop8h 10mDelta
Deal found 9/11$349
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Wed 10/89:14 pmABE - SFO
2 stops27h 26mMultiple Airlines
Wed 10/156:34 amSFO - ABE
1 stop30h 08mMultiple Airlines
Deal found 9/10$351
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Wed 10/12:37 pmABE - SFO
1 stop8h 21mAmerican Airlines
Fri 10/317:04 amSFO - ABE
1 stop9h 36mAmerican Airlines
Deal found 9/9$389
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Mon 10/65:53 pmABE - SFO
1 stop8h 03mAmerican Airlines
Mon 10/2011:58 pmSFO - ABE
2 stops11h 15mAmerican Airlines
Deal found 9/10$394
This Delta deal was found by Cheapflights users on 9/10. 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 11/226:00 pmABE - SFO
1 stop8h 58mDelta
Tue 12/26:00 amSFO - ABE
1 stop8h 14mDelta
Deal found 9/10$428
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/82:43 pmABE - SFO
1 stop10h 13mAmerican Airlines
Wed 10/1511:36 pmSFO - ABE
1 stop10h 50mAmerican Airlines
Deal found 9/10$431
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/82:43 pmABE - SFO
1 stop9h 01mAmerican Airlines
Sun 10/125:09 amSFO - ABE
1 stop9h 14mAmerican Airlines
Deal found 9/10$449
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Fri 12/126:30 amABE - SFO
1 stop8h 19mUnited Airlines
Sun 12/1410:40 pmSFO - ABE
1 stop10h 12mUnited Airlines
Deal found 9/9$458
This Delta deal was found by Cheapflights users on 9/10. 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 10/276:00 pmABE - SFO
1 stop9h 05mDelta
Thu 11/65:50 amSFO - ABE
1 stop8h 30mDelta
Deal found 9/10$464
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/246:37 amABE - SFO
1 stop10h 01mUnited Airlines
Sun 9/2811:33 pmSFO - ABE
1 stop8h 05mUnited Airlines
Deal found 9/9$469

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 September 11, 2025.
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

Thu 1/8

1:00 pm-7:50 pm

1 stop9h 50m

San Francisco

Tue 2/24

6:00 am-5:13 pm

1 stop8h 13m

$333

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Wed 1/7

6:30 am-1:57 pm

1 stop10h 27m

San Francisco

Wed 2/25

6:00 am-5:13 pm

1 stop8h 13m

$333

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Tue 2/17

5:40 pm-11:51 pm

1 stop9h 11m

San Francisco

Sat 2/21

6:00 am-5:13 pm

1 stop8h 13m

$349

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Fri 10/24

6:00 pm-12:05 am

1 stop9h 05m

San Francisco

Wed 10/29

11:58 am-10:15 pm

1 stop7h 17m

$349

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Thu 1/8

1:00 pm-7:50 pm

1 stop9h 50m

San Francisco

Sat 2/28

6:00 am-5:13 pm

1 stop8h 13m

$357

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Fri 1/9

5:40 pm-12:47 pm

2 stops22h 07m

San Francisco

Tue 2/24

6:00 am-5:13 pm

1 stop8h 13m

$360

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Wed 1/7

5:40 pm-9:22 am

2 stops18h 42m

San Francisco

Tue 2/24

6:00 am-5:13 pm

1 stop8h 13m

$367

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Tue 3/3

5:40 pm-11:51 pm

1 stop9h 11m

San Francisco

Sat 3/7

6:00 am-5:13 pm

1 stop8h 13m

$379

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Wed 1/7

5:40 pm-9:22 am

2 stops18h 42m

San Francisco

Sat 2/28

6:00 am-5:13 pm

1 stop8h 13m

$391

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Sat 10/25

12:46 pm-5:54 pm

1 stop8h 08m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 19 results
1
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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

How far ahead should I book a flight from Allentown to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Allentown to San Francisco. Price data was last updated on August 29, 2025.

The price you pay for your flight from Allentown to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Allentown to San Francisco (average of $276). Flying from Allentown to San Francisco in June is currently the most expensive (average of $357). 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 ABE to SFO?

Find hourly flight availability from Allentown to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

One of the essential ways to save on airfare from Allentown to San Francisco is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 41% on airfare.

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 September 11, 2025.
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
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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 9h 50m. There are 2493 mi between Allentown and San Francisco.

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

    United Airlines, at $203, was found to be the cheapest airline from Allentown to San Francisco.Alternate airlines to your destination round-trip include American Airlines and Delta. United Airlines is currently priced 49% below the average price you’ll pay for this route.

  • 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, January is the cheapest month in which you can book a flight from Allentown to San Francisco (average of $276). Flying from Allentown to San Francisco in June is currently the most expensive (average of $357). 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
Roseville
Santa Cruz
Livermore
South San Francisco
Turlock
Antioch
Watsonville
Manteca
Santa Clara
Sunnyvale
Hollister
Vacaville
Foster City
Vallejo
Burlingame
Redwood City
Union City
San Leandro
San Mateo
Lathrop

Browse thousands of different options on Cheapflights for your next trip

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$203Average$491FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$308Average$389FlexibilityNo cancel feeOn-time71%
DeltaCheapest$308Average$368FlexibilityNo cancel feeOn-timeN/A

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