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Fares from $74 One Way, $148 Round Trip from Seattle to Allentown

Prices starting at $148 for return flights and $74 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.

More About Flying To Allentown from Seattle

Route Information for Flights from Seattle to Allentown

Origin Airport IATA CodeSEA
Destination Airport IATA CodePHL
Distance2371 mi
Direct Flight AirlinesAmerican Airlines, Qatar Airways, Alaska Airlines
Earliest Flight Arrival11:42PM UTC
Latest Flight Arrival3:40AM UTC

Flights Review

Feb 27, 2020

good in-flight entertainment

Oct 28, 2019


Oct 22, 2019

Tess is the best. We had a child who did not do well on the trip. Tess went above and beyond to help us calm the child down so we could survive the flight and our neighbors would have a pleasant trip. Thank you, Tess!

Nov 5, 2018

Good service

Feb 27, 2018

It would have been nice to have been allowed to bring two carry-on items instead of one. I paid for checked bags, but if I had just brought the item with me to the plane, I believe I could've saved myself $35 dollars and checked a bag for free.

Seattle to Allentown

For the best travel experience from Seattle to Allentown domestic and international travelers everywhere choose Orbitz for guaranteed low prices and cutting-edge mobile tools.

Convenient Low-Cost Travel

Orbitz makes it simple to book discount flights from Seattle to {} without compromising your schedule. You can always find deals on domestic flights from a location near you. You may find the best deals to fit your schedule by mixing and matching airlines to get you from Seattle to Allentown.

Access Orbitz On The Move

You can access Orbitz anywhere at anytime for travel from Seattle to Allentown using the latest technology. Via your mobile phone you can track any changes to your flight status, gate and baggage claim details, and with Orbitz’s full-service mobile apps for iPhone and Android you can view these trip details anytime anywhere. You can also get fare alerts and travel updates to keep you informed of the cheapest flights from Seattle to Allentown.

Earn Rewards on Your Seattle to Allentown Flights

At Orbitz you can benefit from low cost travel and have your loyalty rewarded on certain types of Seattle to Allentown flights. All you need to do is enter you frequent flyer number when booking and rack up your rewards through Orbitz online on the Traveler Information page for use on future flights. You can even add your frequent flyer number to an existing reservation to start the ball rolling.

Flights from Seattle to Allentown - Frequently Asked Questions

Are there non-stop flights from Seattle to Allentown?

You'll have to break up the journey from Seattle to Allentown because there are no direct flights on this route. Delta Air Lines, American Airlines and WestJet offer the next best thing — a flight with just one stopover.

What is the shortest flight from Seattle to Allentown?

With the flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Allentown, PA (ABE-Lehigh Valley Intl.) taking a minimum of 5 hours and 26 minutes, you'll have plenty of time to sit back and enjoy the experience. Grab a glass of red and get cozy in your seat with a riveting novel or movie.

If I am not able to travel due to COVID-19, can I cancel my flight to Allentown?

We get that traveling right now has its challenges, so it's good to know that many reservations booked through us are able to be cancelled or changed. If your travel plans to Allentown have been affected by COVID-19, a lot of airlines are making things easier by offering credits to use at a later date. Just sign in to your account and you'll quickly see what options are available. Our Customer Service Portal is the place to go for more information.

Are there flights to Allentown with flexible change policies?

In most cases you'll have the option to reschedule your flight to Allentown without a change fee. All you have to do then is pay the difference between the old flight and the new one. Look for the "no change fees" filter and book with confidence.

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 2019 shows that Tuesday is the cheapest day to depart, followed by Monday. 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 the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a fresh start to the new year. Be aware that the most expensive time to fly isn't the height of summer, as most people assume, but the festive month of December.

How can I save money on flights?

To really save big on your next vacation, think outside the box. Select two different airlines or fare types for your return trip and you'll generally get a much better deal. Those who tried this on Orbitz in 2019 saved over 50% on their airfares. Get mixing and matching today!

*According to flight demand on from January to December 2019. Savings are subject to change based on departure location, date and destination.

^Savings based on all package bookings with Flight + Hotel made on from January 1, 2019 to December 31, 2019 as compared to the price of the same components booked separately. Savings will vary based on origin/destination, length of trip, stay dates and selected travel supplier(s). Savings not available on all packages.