ABE - SEA

$175 Find Cheap Flights from Allentown to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Allentown to Seattle departing on 8/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Allentown to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Allentown to Seattle, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$349
Typical prices: $438-$321
United Airlines
Thu 9/24Sat 10/3
ABE - SEA • 1 stop
Cheapest one-way
$175
Typical prices: $136-$423
American Airlines
Mon 8/10
ABE - SEA • 1 stop
Top airlines
Cheapest • from $349 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Allentown and Seattle. You'll need at least 1 connection.
Insights
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Insights
Insights
Top layover airports
Cheapest • Avg $418 (round-trip)
Shortest trip • 8h 45m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 47% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Allentown to Seattle (ABE-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Allentown to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Allentown to Seattle

Thu, Sep 24 - Sat, Oct 3
United Airlines Logo
5:46 pm - 10:56 pm
ABE
-
SEA
8h 10m
1 stop
United Airlines Logo
11:13 pm - 9:35 am
SEA
-
ABE
7h 22m
1 stop
$349United Airlines
Wed, Aug 26 - Mon, Aug 31
United Airlines Logo
5:36 pm - 10:43 pm
ABE
-
SEA
8h 07m
1 stop
United Airlines Logo
7:35 pm - 9:57 am
SEA
-
ABE
11h 22m
2 stops
$354United Airlines
Sat, Oct 31 - Sat, Nov 7
Delta Logo
6:30 am - 4:35 pm
ABE
-
SEA
13h 05m
2 stops
Delta Logo
8:25 am - 10:46 pm
SEA
-
ABE
11h 21m
2 stops
$359Delta
Fri, Aug 28 - Wed, Sep 9
Multiple Airlines Logo
7:00 am - 2:04 pm
ABE
-
SEA
10h 04m
1 stop
Multiple Airlines Logo
7:00 am - 9:05 pm
SEA
-
ABE
35h 05m
2 stops
$362Multiple Airlines
Thu, Sep 24 - Sat, Oct 3
United Airlines Logo
5:46 pm - 10:56 pm
ABE
-
SEA
8h 10m
1 stop
United Airlines Logo
7:25 pm - 9:35 am
SEA
-
ABE
11h 10m
2 stops
$363United Airlines
Thu, Aug 27 - Mon, Aug 31
Delta Logo
6:04 pm - 11:57 pm
ABE
-
SEA
8h 53m
1 stop
Delta Logo
11:59 pm - 5:23 pm
SEA
-
ABE
14h 24m
2 stops
$372Delta
Sat, Oct 3 - Tue, Oct 13
American Airlines Logo
9:13 am - 2:51 pm
ABE
-
SEA
8h 38m
1 stop
American Airlines Logo
11:34 am - 10:15 pm
SEA
-
ABE
7h 41m
1 stop
$377American Airlines
Wed, Aug 26 - Mon, Aug 31
American Airlines Logo
9:36 am - 2:45 pm
ABE
-
SEA
8h 09m
1 stop
American Airlines Logo
5:50 am - 4:42 pm
SEA
-
ABE
7h 52m
1 stop
$393American Airlines
Wed, Aug 26 - Mon, Aug 31
Delta Logo
1:10 pm - 8:23 pm
ABE
-
SEA
10h 13m
1 stop
Delta Logo
11:10 pm - 5:23 pm
SEA
-
ABE
15h 13m
2 stops
$398Delta
Sat, Oct 3 - Wed, Oct 14
American Airlines Logo
2:25 pm - 10:40 pm
ABE
-
SEA
11h 15m
2 stops
American Airlines Logo
6:23 am - 4:48 pm
SEA
-
ABE
7h 25m
1 stop
$403American Airlines
Booking Insights

KAYAK's insights & trends for Allentown to Seattle flights

Get data-powered insights and trends into flights from Allentown to Seattle to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Allentown to Seattle?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Allentown to Seattle departing in September.

What is the cheapest month to fly from Allentown to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Allentown to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Allentown to Seattle is March, where tickets cost $276 (return) on average. On the other hand, the most expensive months are November and July, where the average cost of round-trip tickets is $683 and $672 respectively.

Good to know

Low seasonNovember
Cheapest flight$175
Best time to beat the crowds but there is an average 32% increase in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Allentown to Seattle

When to book flights from Allentown to Seattle

Are your dates flexible? Find out the best times to travel from Allentown to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Allentown to Seattle

  • What is the cheapest flight from Allentown to Seattle?

    In the last 5 days, the lowest price for a flight from Allentown to Seattle was $175 for a one-way ticket and $349 for a round-trip.

  • Do I need a passport to fly between Allentown and Seattle?

    A passport is not required to fly from Allentown to Seattle.

  • Which aircraft models fly most regularly from Allentown to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Allentown to Seattle?

    Star Alliance, and oneworld are the airline alliances operating flights between Allentown and Seattle, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Allentown to Seattle, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Allentown to Seattle are United Airlines and American Airlines. With an average price for the route of $509 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $512 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Allentown to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Allentown to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Allentown to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Allentown is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Allentown to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Allentown with another airline. Booking your flights between Allentown and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Allentown to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Allentown up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Allentown to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Allentown to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Allentown to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9830 reviews
7.1Entertainment
6.6Food
8.1Crew
7.7Boarding
7.3Comfort
Airline reviews

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

2.0 MediocreAnonymous, Jun 2026
ORD - BHM
Read more United Airlines reviews

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

This planes staff was top tier. Everything went great and had a great flight home.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Service was professional and quick. Premium economy seat was comfortable given the class

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Fine. Nothing to write home about. The plane left on time, and arrived on time.

Seat comfort was poor (no lumbar or lower back support).

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

The captain announced to the cabin there would be a delay because they observed a "cut" on a tire during precheck that needed to be cleared by maintenance. We were delayed during this inspection and allowed to proceed after maintenance "measured the cut and decided it was acceptable". My complaint is not about the delay or due diligence. I wish the captain had been more generic when making his announcement. I was a nervous wreck all the way to Charlotte worried that we would have a blowout when landing!

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

I appreciate that I finally got the seat I paid extra for this time. Thank you

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

It would have been nice if American tried to care.

Everything you need to know for your flight from Allentown to Seattle

Information on your arrival and departure airports