$155 Cheap Flights from Allentown (ABE) to Seattle (SEA)

View $155 flight on Sat, Feb 14, 2026Opens in a new window

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

Cheap Flights from Allentown to Seattle (ABE-SEA)

Prices were available within the past 7 days and start at $155 for one-way flights and $299 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Nov 1 - Sat, Nov 15
ABE
Allentown
SEA
Seattle
$299 Roundtrip, found 2 days ago
$299
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Nov 1 from Allentown to Seattle, returning Sat, Nov 15, priced at $299 found 2 days ago
United
Sat, Feb 14 - Wed, Feb 18
ABE
Allentown
SEA
Seattle
$309 Roundtrip, found 3 hours ago
$309
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Feb 14 from Allentown to Seattle, returning Wed, Feb 18, priced at $309 found 3 hours ago
United
Sat, Feb 14 - Wed, Feb 18
ABE
Allentown
SEA
Seattle
$311 Roundtrip, found 3 hours ago
$311
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Feb 14 from Allentown to Seattle, returning Wed, Feb 18, priced at $311 found 3 hours ago
United
Sat, Feb 14 - Wed, Feb 18
ABE
Allentown
SEA
Seattle
$314 Roundtrip, found 3 hours ago
$314
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Feb 14 from Allentown to Seattle, returning Wed, Feb 18, priced at $314 found 3 hours ago
United
Sat, Nov 1 - Sat, Nov 15
ABE
Allentown
SEA
Seattle
$322 Roundtrip, found 2 days ago
$322
Roundtrip
found 2 days ago
Select United flight, departing Sat, Nov 1 from Allentown to Seattle, returning Sat, Nov 15, priced at $322 found 2 days ago
American Airlines
Thu, Mar 12 - Tue, Mar 17
ABE
Allentown
SEA
Seattle
$324 Roundtrip, found 1 day ago
$324
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Mar 12 from Allentown to Seattle, returning Tue, Mar 17, priced at $324 found 1 day ago
United
Sat, Nov 1 - Sat, Nov 15
ABE
Allentown
SEA
Seattle
$327 Roundtrip, found 2 days ago
$327
Roundtrip
found 2 days ago
Select United flight, departing Sat, Nov 1 from Allentown to Seattle, returning Sat, Nov 15, priced at $327 found 2 days ago
Delta
Tue, Mar 10 - Wed, Mar 18
ABE
Allentown
SEA
Seattle
$329 Roundtrip, found 1 day ago
$329
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Mar 10 from Allentown to Seattle, returning Wed, Mar 18, priced at $329 found 1 day ago
United
Sat, Jan 17 - Wed, Jan 28
ABE
Allentown
SEA
Seattle
$329 Roundtrip, found 5 days ago
$329
Roundtrip
found 5 days ago
Select United flight, departing Sat, Jan 17 from Allentown to Seattle, returning Wed, Jan 28, priced at $329 found 5 days ago
Delta
Tue, Feb 24 - Tue, Mar 3
ABE
Allentown
SEA
Seattle
$334 Roundtrip, found 2 days ago
$334
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Feb 24 from Allentown to Seattle, returning Tue, Mar 3, priced at $334 found 2 days ago

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

September is typically the cheapest month to fly

From $283 - $518 per traveler.

Alternative airports near Seattle

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

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $433
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $433
Flights from Allentown (ABE) to Seattle (SEA)
Origin airport
Lehigh Valley Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$298
Distance
2337 mi

Allentown to Seattle Flights

The cheapest times to fly from Allentown to Seattle

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

 

The best time to book a flight from Allentown to Seattle

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

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 Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $155 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 Seattle 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 Seattle 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 Seattle - Tacoma Intl. Airport (SEA) cost?
Secure a cheap one-way flight from $155 or cheap return flight from $299 from Lehigh Valley Intl. Airport (ABE) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lehigh Valley Intl. Airport (ABE) to Seattle - Tacoma Intl. Airport (SEA)?
The cheapest month to fly from ABE to SEA is November, when there's less demand. Off-peak season is usually when you'll find cheap fares for travel between these airports.
Which airlines fly direct from Lehigh Valley Intl. Airport (ABE) to Seattle - Tacoma Intl. Airport (SEA)?
You can't catch a direct flight from Allentown, PA (ABE-Lehigh Valley Intl.) to Seattle - Tacoma Intl. Airport (SEA). However, you can seamlessly travel to Seattle without any layovers by departing from Philadelphia Intl. Airport (PHL).
What is the cheapest airline that flies from Lehigh Valley Intl. Airport (ABE) to Seattle - Tacoma Intl. Airport (SEA)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from ABE to SEA. Then, sort your results by "Price (lowest to highest)" to snap up the best deal available.
How many flights per day from Lehigh Valley Intl. Airport (ABE) to Seattle - Tacoma Intl. Airport (SEA)?
There are no daily nonstop flights departing from Lehigh Valley Intl. Airport (ABE) to Seattle - Tacoma Intl. Airport (SEA). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from ABE to SEA?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change based on various factors, including the time of year and carrier.*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 Seattle - Tacoma Intl. Airport (SEA)?
To reach Seattle - Tacoma Intl. Airport (SEA) on time, pick a flight that takes off from Lehigh Valley Intl. Airport (ABE) before 3 PM. The likelihood 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.
Is it cheaper to buy a plane ticket from Lehigh Valley Intl. Airport (ABE) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Holding off until right before your break to book a flight from ABE to SEA generally means paying more. While it's possible to find some last-minute deals, they aren't always guaranteed. Keep your travel plans flexible for the best chance of getting a bargain.
Is it cheaper to book an ABE to SEA flight and hotel package?
Compared with arranging flights and hotels separately, booking an ABE to SEA 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 pick your flights and select from our extensive range of hotels, then personalize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Lehigh Valley Intl. Airport (ABE) to Seattle - Tacoma Intl. Airport (SEA)?
Typically, it's possible to cancel or reschedule your ABE to SEA flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.