ABE - SEA

$185 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 6/15. 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
$329
Overall average: $416
American Airlines
Wed 8/12Wed 8/19
ABE - SEA • 1 stop
Cheapest one-way
$185
Typical prices: $337-$372
American Airlines
Mon 6/15
ABE - SEA • 1 stop
Top airlines
American Airlines
Cheapest • from $329 (round-trip)
United Airlines
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
Insights
Insights
Insights
Top layover airports
Philadelphia (PHL)
Cheapest • Avg $423 (round-trip)
Chicago (ORD)
Shortest trip • 8h 42m (one-way)
Insights
Insights
Insights
Insights
When to travel
March
Cheapest • 47% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Wed, Aug 12 - Wed, Aug 19
American Airlines Logo
5:18 pm - 11:50 pm
ABE
-
SEA
9h 32m
1 stop
American Airlines Logo
10:40 am - 10:15 pm
SEA
-
ABE
8h 35m
1 stop
$329American Airlines
Tue, Apr 28 - Tue, May 26
American Airlines Logo
6:00 am - 11:28 am
ABE
-
SEA
8h 28m
1 stop
American Airlines Logo
10:27 am - 11:19 pm
SEA
-
ABE
9h 52m
1 stop
$357American Airlines
Tue, Apr 28 - Sat, May 23
Delta Logo
5:59 pm - 11:53 pm
ABE
-
SEA
8h 54m
1 stop
Delta Logo
9:45 am - 10:18 pm
SEA
-
ABE
9h 33m
1 stop
$363Delta
Tue, Jun 16 - Wed, Jul 29
American Airlines Logo
5:06 pm - 11:39 pm
ABE
-
SEA
9h 33m
1 stop
American Airlines Logo
10:27 am - 11:15 pm
SEA
-
ABE
9h 48m
1 stop
$378American Airlines
Thu, May 21 - Sat, May 30
American Airlines Logo
5:06 pm - 12:16 am
ABE
-
SEA
10h 10m
1 stop
American Airlines Logo
6:00 am - 4:19 pm
SEA
-
ABE
7h 19m
1 stop
$393American Airlines
Sat, May 9 - Sun, May 17
United Airlines Logo
5:40 pm - 10:47 pm
ABE
-
SEA
8h 07m
1 stop
United Airlines Logo
10:53 pm - 9:48 am
SEA
-
ABE
7h 55m
1 stop
$395United Airlines
Wed, Apr 22 - Wed, Apr 29
United Airlines Logo
5:43 pm - 10:42 pm
ABE
-
SEA
7h 59m
1 stop
United Airlines Logo
11:59 pm - 9:48 am
SEA
-
ABE
6h 49m
1 stop
$404United Airlines
Sat, May 30 - Sat, Jun 6
United Airlines Logo
5:36 pm - 11:59 pm
ABE
-
SEA
9h 23m
1 stop
United Airlines Logo
10:40 pm - 9:38 am
SEA
-
ABE
7h 58m
1 stop
$405United Airlines
Sat, May 9 - Sun, May 17
United Airlines Logo
2:25 pm - 11:29 pm
ABE
-
SEA
12h 04m
2 stops
United Airlines Logo
10:53 pm - 9:48 am
SEA
-
ABE
7h 55m
1 stop
$406United Airlines
Thu, May 21 - Sat, May 30
American Airlines Logo
5:06 pm - 12:16 am
ABE
-
SEA
10h 10m
1 stop
American Airlines Logo
6:00 am - 4:19 pm
SEA
-
ABE
7h 19m
1 stop
$408American 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.

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 July and November, where the average cost of round-trip tickets is $807 and $683 respectively.

Find deals

Good to know

Low seasonNovember
Cheapest flight$185
Best time to beat the crowds but there is an average 31% increase in price.
Most popular time to fly and prices are also 17% 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 3 days, the lowest price for a flight from Allentown to Seattle was $185 for a one-way ticket and $329 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 $597 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 $461 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 9435 reviews
7.3Comfort
7.1Entertainment
6.6Food
8.1Crew
7.7Boarding
Airline reviews

OK, we were delayed and had to de plane and reboard.

6.0 GoodJamie, Mar 2026
LAX - EWR
Read more United Airlines reviews

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Both my flight where delayed Had 25min to make it to my transfer flight

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

It’s always a great time flying with united airlines.

It would have been nice if American tried to care.

Delayed initially because they couldn’t print the flight details. Poor instruction on delay. When I got on the plane the flight attendant argued with me about whether my carry on would fit (it did, although she didn’t acknowledge that). No greeting (other than arguing with me) getting on or off the plane.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

They are always late and seats was also not having working charger

Pilot navigated severe weather/snow storm with skill. Described his intentions clearly

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

Flight was delayed because of a bird strike. They had another plane available within 45 minutes.

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

Information on your arrival and departure airports

Allentown (ABE)
Seattle (SEA)