$124 Cheap Flights from Seattle (SEA) to Allentown (ABE)

View $124 flight on Sat, Feb 21, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Lehigh Valley Intl. Airport (ABE)

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Cheap Flights from Seattle to Allentown (SEA-ABE)

Prices were available within the past 7 days and start at $124 for one-way flights and $237 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Jan 7 - Wed, Jan 14
SEA
Seattle
ABE
Allentown
$237 Roundtrip, found 1 day ago
$237
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jan 7 from Seattle to Allentown, returning Wed, Jan 14, priced at $237 found 1 day ago
American Airlines
Wed, Jan 7 - Wed, Jan 14
SEA
Seattle
ABE
Allentown
$246 Roundtrip, found 1 day ago
$246
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jan 7 from Seattle to Allentown, returning Wed, Jan 14, priced at $246 found 1 day ago
American Airlines
Wed, Jan 7 - Wed, Jan 14
SEA
Seattle
ABE
Allentown
$256 Roundtrip, found 1 day ago
$256
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jan 7 from Seattle to Allentown, returning Wed, Jan 14, priced at $256 found 1 day ago
Delta
Tue, Jan 13 - Sat, Jan 24
SEA
Seattle
ABE
Allentown
$257 Roundtrip, found 1 day ago
$257
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Jan 13 from Seattle to Allentown, returning Sat, Jan 24, priced at $257 found 1 day ago
United
Wed, Mar 4 - Wed, Mar 11
SEA
Seattle
ABE
Allentown
$257 Roundtrip, found 1 day ago
$257
Roundtrip
found 1 day ago
Select United flight, departing Wed, Mar 4 from Seattle to Allentown, returning Wed, Mar 11, priced at $257 found 1 day ago
American Airlines
Wed, Jan 7 - Wed, Jan 14
SEA
Seattle
ABE
Allentown
$262 Roundtrip, found 1 day ago
$262
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jan 7 from Seattle to Allentown, returning Wed, Jan 14, priced at $262 found 1 day ago
United
Wed, Feb 18 - Wed, Feb 25
SEA
Seattle
ABE
Allentown
$272 Roundtrip, found 5 days ago
$272
Roundtrip
found 5 days ago
Select United flight, departing Wed, Feb 18 from Seattle to Allentown, returning Wed, Feb 25, priced at $272 found 5 days ago
American Airlines
Wed, Feb 18 - Wed, Feb 25
SEA
Seattle
ABE
Allentown
$272 Roundtrip, found 5 days ago
$272
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Feb 18 from Seattle to Allentown, returning Wed, Feb 25, priced at $272 found 5 days ago
United
Wed, Mar 4 - Wed, Mar 11
SEA
Seattle
ABE
Allentown
$276 Roundtrip, found 1 day ago
$276
Roundtrip
found 1 day ago
Select United flight, departing Wed, Mar 4 from Seattle to Allentown, returning Wed, Mar 11, priced at $276 found 1 day ago
United
Wed, Jan 7 - Wed, Jan 14
SEA
Seattle
ABE
Allentown
$278 Roundtrip, found 1 day ago
$278
Roundtrip
found 1 day ago
Select United flight, departing Wed, Jan 7 from Seattle to Allentown, returning Wed, Jan 14, priced at $278 found 1 day ago

Find the cheapest month to fly from Seattle (SEA) to Allentown (ABE)

January is typically the cheapest month to fly

From $246 - $541 per traveler.

Alternative airports near Allentown

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lehigh Valley Intl. ABE. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $840
ABE
Lehigh Valley Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $840
Flights from Seattle (SEA) to Allentown (ABE)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Lehigh Valley Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$236
Distance
2337 mi

Seattle to Allentown Flights

The cheapest times to fly from Seattle to Allentown

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 Seattle to Allentown are during the month of January. You can find some of the cheapest flights from Seattle to Allentown with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Allentown

Sunday is one of the best days to book for cheap flights from Seattle to Allentown: 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 Seattle to Allentown

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 Seattle to Allentown in 2026. You can also book with separate airlines for your outbound and return journeys, from $124 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 Seattle to Allentown 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 Seattle to Allentown 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 Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE) cost?
Get a cheap one-way flight from $124 or cheap return flight from $237 from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE)?
The cheapest month to fly from SEA to ABE is January, when demand is low. Off-peak months are generally when better flight deals are available between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE)?
To find the cheapest airline flying from SEA to ABE, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE)?
Direct flights from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to ABE?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE)?
To land at Lehigh Valley Intl. Airport (ABE) on schedule, select a flight that leaves from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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.
What airports do you fly into for Allentown from Seattle - Tacoma Intl. Airport (SEA)?
Check out your flight options from Seattle - Tacoma Intl. Airport (SEA) to Philadelphia Intl. Airport (PHL). This is the only airport in Allentown you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE) last-minute?
Last-minute bookings from SEA to ABE are typically more expensive. To secure the best rates, start searching for flights ahead of time. That said, if you're flexible with your travel dates, you may land a cheap ticket right before you leave.
Is it cheaper to book a SEA to ABE flight and hotel package?
Compared with arranging hotels and flights separately, booking a SEA to ABE flight and hotel package with Expedia could result in significant savings. Better yet, having it all in one place will take the hassle out of planning your trip. Simply secure your flights and select from our extensive range of stays, then personalize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE)?
It's generally possible to cancel or reschedule your SEA to ABE flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.