SEA - ABE

$169 Find Cheap Flights from Seattle to Allentown

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Allentown departing on 5/16. 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 Allentown

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Allentown, 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 Seattle to Allentown, as well as popular online travel agencies
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$309
United Airlines
Wed 4/15Wed 4/22
SEA - ABE • 1 stop
Cheapest one-way
$169
Typical prices: $198-$349
Delta
Sat 5/16
SEA - ABE • 1 stop
Top airlines
Cheapest • from $385 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Allentown. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $473 (round-trip)
Shortest trip • 7h 42m (one-way)
Insights
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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 Allentown!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Allentown (SEA-ABE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Allentown 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 Seattle to Allentown

Wed, Apr 15 - Wed, Apr 22
United Airlines Logo
11:59 pm - 9:48 am
SEA
-
ABE
6h 49m
1 stop
United Airlines Logo
5:43 pm - 10:42 pm
ABE
-
SEA
7h 59m
1 stop
$309United Airlines
Wed, Apr 15 - Wed, Apr 22
United Airlines Logo
7:37 pm - 9:48 am
SEA
-
ABE
11h 11m
2 stops
United Airlines Logo
5:43 pm - 10:42 pm
ABE
-
SEA
7h 59m
1 stop
$314United Airlines
Mon, Apr 13 - Tue, Apr 21
United Airlines Logo
11:59 pm - 9:48 am
SEA
-
ABE
6h 49m
1 stop
United Airlines Logo
5:43 pm - 10:42 pm
ABE
-
SEA
7h 59m
1 stop
$409United Airlines
Mon, Apr 13 - Wed, Apr 22
United Airlines Logo
5:45 pm - 9:48 am
SEA
-
ABE
13h 03m
2 stops
United Airlines Logo
5:43 pm - 10:42 pm
ABE
-
SEA
7h 59m
1 stop
$414United Airlines
Fri, Mar 27 - Fri, Apr 3
United Airlines Logo
11:59 pm - 9:56 am
SEA
-
ABE
6h 57m
1 stop
United Airlines Logo
5:43 pm - 10:42 pm
ABE
-
SEA
7h 59m
1 stop
$417United Airlines
Fri, Mar 27 - Wed, Apr 1
American Airlines Logo
10:08 pm - 11:30 am
SEA
-
ABE
10h 22m
1 stop
American Airlines Logo
12:00 pm - 9:16 pm
ABE
-
SEA
12h 16m
2 stops
$434American Airlines
Tue, Mar 24 - Fri, Apr 3
United Airlines Logo
11:59 pm - 9:56 am
SEA
-
ABE
6h 57m
1 stop
United Airlines Logo
5:43 pm - 10:42 pm
ABE
-
SEA
7h 59m
1 stop
$441United Airlines
Tue, Mar 31 - Sun, Apr 5
United Airlines Logo
7:00 am - 5:03 pm
SEA
-
ABE
7h 03m
1 stop
United Airlines Logo
6:15 am - 11:48 am
ABE
-
SEA
8h 33m
1 stop
$443United Airlines
Mon, Apr 13 - Fri, Apr 24
United Airlines Logo
7:37 pm - 9:48 am
SEA
-
ABE
11h 11m
2 stops
United Airlines Logo
5:43 pm - 12:34 am
ABE
-
SEA
9h 51m
1 stop
$448United Airlines
Thu, Apr 30 - Sun, May 3
United Airlines Logo
10:53 pm - 9:48 am
SEA
-
ABE
7h 55m
1 stop
United Airlines Logo
6:15 am - 11:39 am
ABE
-
SEA
8h 24m
1 stop
$449United Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Allentown flights

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

Which airlines provide the cheapest flights from Seattle to Allentown?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Seattle to Allentown were found on American Airlines ($385) and United Airlines ($449).

Good to know

Low seasonApril
Cheapest flight$169
Best time to beat the crowds with an average 41% drop in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Seattle to Allentown

When to book flights from Seattle to Allentown

Are your dates flexible? Find out the best times to travel from Seattle to Allentown 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 Seattle to Allentown

  • What is the cheapest flight from Seattle to Allentown?

    In the last 3 days, the lowest price for a flight from Seattle to Allentown was $169 for a one-way ticket and $385 for a round-trip.

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

    No

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

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

  • Which airline alliances offer flights from Seattle to Allentown?

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Allentown are Delta and United Airlines. With an average price for the route of $647 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $443 and an overall rating of 7.4.

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

    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 Seattle to Allentown.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Allentown from Seattle 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 Seattle to Allentown?

    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 Allentown with an airline and back to Seattle with another airline. Booking your flights between Seattle and ABE 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 Seattle to Allentown?

    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 Allentown from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Seattle to Allentown

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Allentown. 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 Seattle to Allentown? 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.
7.9
DeltaOverall score based on 8278 reviews
8.5Crew
7.2Food
8.1Boarding
7.8Entertainment
7.9Comfort
Airline reviews

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

8.0 ExcellentMary, Mar 2026
LGA - MKE
Read more Delta reviews

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

The flight was flying with 30% capacity. The flight my seat from preferred seating to back of the seat. Even though i can understand that this was to balance the flight weight. The flight attendance decided to do the serving near my seat and in the middle , their noices woke me up from sleep , when i realized that the service has ended and when they were going back asked for a coffee, for which they answered they have completed teh service in my location. That really upset me as they woke me up and also rejected the coffee i asked. I ended up landing with a headache, thanks to the crew that screwed up my travel

Delayed. Hot. Passenger next to me was so large I couldn’t move.

Same experience as the flight from Norfolk to Atlanta where people are boarded in zones that don't make sense. People behind you on the plane will get on before you and they take the luggage space on your row.

The boarding process doesn't make sense since some people that will sit behind your rows are boarded before you and then they take up the luggage space above your head. I then have to wait for people to get off the plane before I can go back to get my luggage.

Good flight. Connector flight was delayed so made a short turnaround in Atlanta which was stressful. Otherwise, great crew, Staff in ATL was very informative about the delay and ensured people their connections were fine. Notified the ones that were not. Great communication.

2+hrs delay without any reason provided and a cramped flight

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.

Good flight. Efficient boarding and competent flight crew. No problems until we arrived at our destination gate. We were early so there was an aircraft at the gate that had to move before we could pull in. Then, due to the type of aircraft we flew, the cabin door could not be opened until some luggage from the cargo bay was offloaded to preserve center of gravity characteristics. So, that further delayed deplaning. Despite being 20 minutes early on landing, we ended up being 5 to 10 minutes late after all the delays.

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

There was no WiFi available, there were mechanical problems with the plane and we landed at C 124, then the gate was switched to A 26, then all the way back to C126! For a 75 yo woman traveling alone, this was a difficult journey, indeed!

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Complimentary light meal would be appreciated. But great flight crew service on all legs

I didn't end up taking this flight. I got up at 4am for a flight that was supposed to board at 6am - at 5:55am you delayed the flight to 10am. The airport is under construction so I switched to a later flight as I wasn't going to sit in the airport for 4 hours. They said the delay was due to the crew needing rest from a flight coming in late the night before - if that was the case then I think you should have delayed the flight much sooner so that passengers wouldn't get up so early and get to the airport to sit and wait.

I very rarely fly American and my experience today reenforces that is the correct decision. While the staff were all very courteous, our flight was first thing in the morning so there was no reason to be delayed, yet appropriate maintenance checks weren’t completed prior to our flight so we were delayed multiple times. Not a great showing, American Airlines.

Boarding is always an ordeal. Less dogs on flights. I am highly allergic to dogs and cats. Why are there so many animals these days?

I was on a small regional flight from Detroit to Philadelphia. When we landed the outside cruise needed to turn something off with the engine, which took quite a long time. Then, when they allowed us to get off the plane it was outside. They took their time, unloading all the luggage and waited till they unloaded all the luggage before they brought it over to us. It was 9 o’clock at night freezing cold out, and there was no proactive hustle to try to get people their luggage. It was really one of the worst experiences I think I’ve ever had with American until a manager came over. I don’t think they were going to even consider pulling the luggage over to the people that had been waiting outside for at least 10 minutes in the freezing cold.

Awful. Original flight was delayed 5 hours. Had to to take a connecting flight instead of direct. Had a 4 hour layover. I missed all of my morning meetings getting in 5 hours later than I was supposed to and had to change to take a later flight the next day to get them back in which cia time another $150.

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

The attendants were kind and helpful. A sugar-free drink would have been very welcome.

The entertainment options were at best, fair. It was exactly the same as my outbound flight. It would have been more entertaining if there were some series from Apple TV, HBO, Showtime or other carriers for me to catch up with.

The seat cushions were very worn so they were extremely uncomfortable.

So excited very proud first of all I wanna thank kayak all updates very professional and fast alart And amazing cabin crew so nice to me they deserve big salute

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

Information on your arrival and departure airports