$219 Cheap Delta flights Seattle (SEA) to Allentown (ABE)

View $219 flight on Tue, Nov 4, 2025Opens in a new window
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$219 Cheap Delta flights Seattle (SEA) to Allentown (ABE)

Prices were available within the past 7 days and start at $219 for one-way flights and $314 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Nov 4 - Tue, Nov 18
SEA
Seattle
ABE
Allentown
$314 Roundtrip, found 2 days ago
$314
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Nov 4 from Seattle to Allentown, returning Tue, Nov 18, priced at $314 found 2 days ago
Delta
Tue, Nov 4 - Sat, Nov 15
SEA
Seattle
ABE
Allentown
$328 Roundtrip, found 2 days ago
$328
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Nov 4 from Seattle to Allentown, returning Sat, Nov 15, priced at $328 found 2 days ago
Flights from Seattle (SEA) to Allentown (ABE)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Lehigh Valley Intl.
Airlines serving
American Airlines, Delta, United
Popular airline
American Airlines
Distance
2337 mi

Frequently asked questions

How much is a Delta Air Lines flight from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE)?
Use the "Price (lowest to highest)" filter on Expedia to search for cheap Delta Air Lines return flights from $314 from SEA to ABE. Affordable one-way tickets from $219 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SEA to ABE with Delta Air Lines?
Search for one-way or return flights to Allentown in January or March. You could find an affordable fare with Delta Air Lines during these off-season months.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE) with Delta Air Lines?
Begin your search one to three months ahead of your departure date to score cheaper fares on Delta Air Lines flights from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing spot on, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE)?
Click on the "Nonstop" filter when browsing for direct Delta Air Lines flights from SEA to ABE. It's also an easy way to compare other airlines servicing the same direct trip.
What is the earliest Delta Air Lines flight from SEA to ABE?
Sort your results by "Early Morning" and "Morning" to browse the earliest flights from SEA to ABE. Taking off early means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Allentown?
Get on a Delta Air Lines flight from Seattle - Tacoma Intl. Airport (SEA) to Allentown, and you'll probably arrive at Lehigh Valley Intl. Airport (ABE). This is the airline's primary hub in this city.
Why fly with Delta Air Lines from SEA to ABE?
Traveling from SEA to ABE with Delta Air Lines means enjoying a host of benefits, such as a rewarding loyalty program and an excellent in-flight experience. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to use on select future travel purchases. That's in addition to the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Seattle - Tacoma Intl. Airport (SEA) to Lehigh Valley Intl. Airport (ABE)?
Depending on the type of fare you purchased, a fee generally applies if you cancel or change your booking more than 24 hours after it's been confirmed. To secure tickets with more flexibility, select our "Changes included" or "No cancel fee" filter when you look for flights. For additional information on changing or canceling your reservation, go to "Trips," select your flight and click on "Manage Booking."

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*Available to One Key members.