$104 Cheap flight deals from Seattle (SEA) to Allentown (ABE)

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This Weekend's Flight Deals from Seattle to Allentown

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Dec 27 - Thu, Jan 1
SEA
Seattle - Tacoma Intl.
PHL
Philadelphia Intl.
$533 Roundtrip, found 16 hours ago
$533
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Sat, Dec 27 from Seattle - Tacoma Intl. to Philadelphia Intl., returning Thu, Jan 1, priced at $533 found 16 hours ago
Sun, Dec 28 - Fri, Jan 9
SEA
Seattle - Tacoma Intl.
ABE
Lehigh Valley Intl.
$595 Roundtrip, found 6 days ago
$595
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sun, Dec 28 from Seattle - Tacoma Intl. to Lehigh Valley Intl., returning Fri, Jan 9, priced at $595 found 6 days ago
Sun, Dec 28 - Thu, Jan 1
SEA
Seattle - Tacoma Intl.
TTN
Mercer
$637 Roundtrip, found 3 days ago
$637
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, Dec 28 from Seattle - Tacoma Intl. to Mercer, returning Thu, Jan 1, priced at $637 found 3 days ago

Airfares from $104 One Way, $235 Round Trip from Seattle to Allentown

Prices starting at $235 for return flights and $104 for one-way flights to Allentown were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Apr 14 - Tue, Apr 21
SEA
Seattle
PHL
Philadelphia
$235 Roundtrip, found 1 day ago
$235
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Tue, Apr 14 from Seattle to Philadelphia, returning Tue, Apr 21, priced at $235 found 1 day ago
Sat, Feb 7 - Sat, Feb 14
SEA
Seattle
PHL
Philadelphia
$236 Roundtrip, found 1 day ago
$236
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Feb 7 from Seattle to Philadelphia, returning Sat, Feb 14, priced at $236 found 1 day ago
Tue, Apr 14 - Tue, Apr 21
SEA
Seattle
ABE
Allentown
$237 Roundtrip, found 16 hours ago
$237
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Tue, Apr 14 from Seattle to Allentown, returning Tue, Apr 21, priced at $237 found 16 hours ago
Tue, Apr 14 - Tue, Apr 21
SEA
Seattle
TTN
Trenton
$237 Roundtrip, found 1 day ago
$237
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Apr 14 from Seattle to Trenton, returning Tue, Apr 21, priced at $237 found 1 day ago
Thu, May 7 - Tue, May 12
SEA
Seattle
PHL
Philadelphia
$247 Roundtrip, found 2 hours ago
$247
Roundtrip
found 2 hours ago
Select Delta flight, departing Thu, May 7 from Seattle to Philadelphia, returning Tue, May 12, priced at $247 found 2 hours ago

Allentown economy flight packages

Price found within the past 48 hours. Click for updated prices.
Valley Forge Casino Resort
4.0-star property

Valley Forge Casino Resort

8.4/10 Very Good! (1,003 reviews)

Feb 2 - Feb 5

3 night stay

Seattle (SEA) to Philadelphia (PHL)

United • Non-stop roundtrip • Coach
Price was $600, price is now $425 per person
$425
per person
found 16 hours ago
Enjoyed the beach area and pool

Reviewed on Sep 7, 2025

Philadelphia Marriott Old City
4.0-star property

Philadelphia Marriott Old City

8.6/10 Excellent! (1,000 reviews)

Feb 2 - Feb 5

3 night stay

Seattle (SEA) to Philadelphia (PHL)

United • Non-stop roundtrip • Coach
Price was $593, price is now $453 per person
$453
per person
found 16 hours ago
Location very close to our event. Valet parking and on-site breakfast were a bit pricy.

Reviewed on Sep 7, 2025

Hyatt Centric Center City Philadelphia
4.0-star property

Hyatt Centric Center City Philadelphia

9.4/10 Exceptional! (1,515 reviews)

Feb 2 - Feb 5

3 night stay

Seattle (SEA) to Philadelphia (PHL)

United • Non-stop roundtrip • Coach
Price was $572, price is now $441 per person
$441
per person
found 16 hours ago
Up to date accommodations that were within walking to all tourist spots.

Reviewed on Oct 14, 2025

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More About Flying To Allentown from Seattle

Route Information for Flights from Seattle to Allentown

Origin Airport IATA Code
SEA
Destination Airport IATA Code
ABE
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

Seattle to Allentown

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Frequently asked questions

Are there non-stop flights from Seattle to Allentown?
Two airlines fly nonstop from SEA to Philadelphia Intl. Airport (PHL) — American Airlines and Alaska Airlines. They'll take you where you need to go quickly and comfortably.
What is the shortest flight from Seattle to Allentown?
The quickest flight time from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Philadelphia Intl. Airport (PHL) is around 5 hours and 41 minutes. Order your favorite tipple from the drink cart, start your travel journal or finish that podcast — you'll have enough time on this medium-haul journey.
What airlines fly from Seattle to Allentown most frequently?
American Airlines (AA) operates 52 flights every month between Seattle - Tacoma Intl. Airport (SEA) to Philadelphia, PA (PHL-Philadelphia Intl.). Your next exciting adventure is only a few clicks away. Also consider the great fares available with Alaska Airlines (AS). Offering 30 flights every month between Seattle and Allentown, they'll make sure your journey is just as enjoyable as the destination.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

More Destinations

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.