$156 Cheap Flights from Allentown (ABE) to San Francisco (SFO)

View $156 flight on Sun, Aug 31, 2025Opens in a new window

Popular airlines from Lehigh Valley Intl. Airport (ABE) to San Francisco Intl. Airport (SFO)

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Cheap Flights from Allentown to San Francisco (ABE-SFO)

Prices were available within the past 7 days and start at $156 for one-way flights and $284 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Aug 31 - Sun, Sep 7
ABE
Allentown
SFO
San Francisco
$284 Roundtrip, just found
$284
Roundtrip
just found
Select United flight, departing Sun, Aug 31 from Allentown to San Francisco, returning Sun, Sep 7, priced at $284 just found
United
Sun, Aug 31 - Sun, Sep 7
ABE
Allentown
SFO
San Francisco
$296 Roundtrip, just found
$296
Roundtrip
just found
Select United flight, departing Sun, Aug 31 from Allentown to San Francisco, returning Sun, Sep 7, priced at $296 just found
Delta
Sun, Aug 31 - Tue, Sep 9
ABE
Allentown
SFO
San Francisco
$309 Roundtrip, just found
$309
Roundtrip
just found
Select Delta flight, departing Sun, Aug 31 from Allentown to San Francisco, returning Tue, Sep 9, priced at $309 just found
United
Fri, Jul 18 - Sun, Jul 20
ABE
Allentown
SFO
San Francisco
$314 Roundtrip, found 2 days ago
$314
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jul 18 from Allentown to San Francisco, returning Sun, Jul 20, priced at $314 found 2 days ago
United
Sun, Aug 31 - Sun, Sep 7
ABE
Allentown
SFO
San Francisco
$316 Roundtrip, just found
$316
Roundtrip
just found
Select United flight, departing Sun, Aug 31 from Allentown to San Francisco, returning Sun, Sep 7, priced at $316 just found
Delta
Wed, Nov 19 - Sat, Dec 6
ABE
Allentown
SFO
San Francisco
$319 Roundtrip, found 4 days ago
$319
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Nov 19 from Allentown to San Francisco, returning Sat, Dec 6, priced at $319 found 4 days ago
Delta
Tue, Aug 19 - Tue, Sep 9
ABE
Allentown
SFO
San Francisco
$323 Roundtrip, found 3 days ago
$323
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Aug 19 from Allentown to San Francisco, returning Tue, Sep 9, priced at $323 found 3 days ago
Delta
Sun, Aug 31 - Sun, Sep 7
ABE
Allentown
SFO
San Francisco
$327 Roundtrip, just found
$327
Roundtrip
just found
Select Delta flight, departing Sun, Aug 31 from Allentown to San Francisco, returning Sun, Sep 7, priced at $327 just found
Delta
Tue, Nov 25 - Sat, Dec 6
ABE
Allentown
SFO
San Francisco
$333 Roundtrip, found 4 days ago
$333
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Nov 25 from Allentown to San Francisco, returning Sat, Dec 6, priced at $333 found 4 days ago
American Airlines
Sun, Aug 31 - Sun, Sep 7
ABE
Allentown
SFO
San Francisco
$349 Roundtrip, just found
$349
Roundtrip
just found
Select American Airlines flight, departing Sun, Aug 31 from Allentown to San Francisco, returning Sun, Sep 7, priced at $349 just found

Find the cheapest month to fly from Allentown (ABE) to San Francisco (SFO)

September is typically the cheapest month to fly

From $234 - $436 per traveler.

Graph displaying average flight prices per month

Flights from Allentown (ABE) to San Francisco (SFO)
Origin airport
Lehigh Valley Intl.
Destination airport
San Francisco Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$283
Distance
2495 mi

Allentown to San Francisco Flights

The cheapest times to fly from Allentown to San Francisco

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Allentown to San Francisco are during the month of August. You can find some of the cheapest flights from Allentown to San Francisco with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Allentown to San Francisco

Sunday is one of the best days to book for cheap flights from Allentown to San Francisco: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Allentown to San Francisco

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Allentown to San Francisco in 2025. You can also book with separate airlines for your outbound and return journeys, from $156 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Allentown to San Francisco flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Allentown to San Francisco airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Lehigh Valley Intl. Airport (ABE) to San Francisco Intl. Airport (SFO) cost?
Discover the latest flight deals from ABE to SFO by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ABE to SFO?
The cheapest flights from ABE to SFO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Lehigh Valley Intl. Airport (ABE) to San Francisco Intl. Airport (SFO)?
Although Allentown, PA (ABE-Lehigh Valley Intl.) doesn't have any direct flights to San Francisco Intl. Airport (SFO), other airports have nonstop routes. Jetting off from Philadelphia Intl. Airport (PHL) will get you to San Francisco without any detours.
What is the cheapest airline that flies from ABE to SFO?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ABE to SFO. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Lehigh Valley Intl. Airport (ABE) to San Francisco Intl. Airport (SFO)?
You'll need to book a flight with a layover when traveling from Lehigh Valley Intl. Airport (ABE) to San Francisco Intl. Airport (SFO). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from ABE to SFO?
Generally you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lehigh Valley Intl. Airport (ABE) to San Francisco Intl. Airport (SFO)?
Choose a flight from Lehigh Valley Intl. Airport (ABE) to San Francisco Intl. Airport (SFO) that takes off before 3 PM to reduce the likelihood of delays. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lehigh Valley Intl. Airport (ABE) to San Francisco Intl. Airport (SFO) last-minute?
Booking your ticket from ABE to SFO right before your getaway is generally more expensive. But if there's some wiggle room with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book an ABE to SFO flight and hotel package?
Compared with arranging flights and hotels separately, booking an ABE to SFO flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one easy place takes the hassle out of travel planning. Just pick your flights and choose from our wide range of hotels, then personalize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Lehigh Valley Intl. Airport (ABE) to San Francisco Intl. Airport (SFO)?
If you booked your ABE to SFO flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

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*Available to One Key members.