San Francisco

$169+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — SFO
Aug 3 — Aug 101
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Allentown to San Francisco 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.

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 July 29, 2025.

Round-trip from

$309
(Delta)

One-way from

$169
(Delta)

Popular in

April

Cheapest in

November

Average price

$438
From Allentown-Bethlehem to San Francisco
One-way flight from Allentown-Bethlehem to San Francisco
Highest demand for flights based on searches. 8% potential increase in price ($37 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).
Average for round-trip flights in July 2025

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 July 29, 2025.

This Delta deal was found by Cheapflights users on 7/28. 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 9/126:12 pmABE - SFO
1 stop8h 45mDelta
Mon 9/1510:50 pmSFO - ABE
1 stop10h 14mDelta
Deal found 7/28$309
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Sat 12/131:44 pmABE - SFO
1 stop8h 26mAmerican Airlines
Mon 12/1510:42 pmSFO - ABE
1 stop9h 04mAmerican Airlines
Deal found 7/27$369
This United Airlines deal was found by Cheapflights users on 7/27. 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 11/75:22 pmABE - SFO
1 stop9h 37mUnited Airlines
Sat 11/156:00 amSFO - ABE
1 stop7h 47mUnited Airlines
Deal found 7/27$518
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/298:30 amABE - SFO
3 stops17h 21mMultiple Airlines
Sun 8/3111:59 pmSFO - ABE
2 stops20h 03mMultiple Airlines
Deal found 7/28$722

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 July 29, 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

Fri 9/12

6:12 pm-11:57 pm

1 stop8h 45m

San Francisco

Mon 9/15

10:50 pm-12:04 pm

1 stop10h 14m

$309

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Sat 12/13

1:44 pm-7:10 pm

1 stop8h 26m

San Francisco

Mon 12/15

10:42 pm-10:46 am

1 stop9h 04m

$369

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Fri 11/7

5:22 pm-11:59 pm

1 stop9h 37m

San Francisco

Sat 11/15

6:00 am-4:47 pm

1 stop7h 47m

$518

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Fri 8/29

8:30 am-10:51 pm

3 stops17h 21m

San Francisco

Sun 8/31

11:59 pm-11:02 pm

2 stops20h 03m

$722

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Wed 8/27

12:56 pm-6:52 pm

1 stop8h 56m

$169

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Wed 8/27

6:00 am-12:56 pm

2 stops9h 56m

$319

AllentownSan Francisco

ABE - SFO

ABESFO

Allentown-Bethlehem

Sun 9/28

1:00 pm-7:56 am

2 stops21h 56m

$491

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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 July 25, 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 $358). 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 July 29, 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 July 29, 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.
8.0
Very good

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

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
8.0
Very good
8.0
Very good

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

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
8.0
Very good

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

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
8.0
Very good

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

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

    Delta, at $309, was found to be the cheapest airline from Allentown to San Francisco.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Delta is currently priced 27% 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 $169 on Delta. Other airlines that offer cheap prices include American Airlines from $319 and United Airlines from $491 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, 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 $358). 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
Mountain View
Santa Cruz
South San Francisco
Livermore
Turlock
Manteca
Antioch
Hollister
Watsonville
Sunnyvale
Newark
Milpitas
Campbell
Foster City
Capitola
Santa Clara
San Leandro
Burlingame
Redwood City

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.

Alternative routes for Allentown to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$203Average$482FlexibilityNo cancel feeOn-time69%
DeltaCheapest$269Average$368FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$276Average$383FlexibilityNo cancel feeOn-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.