SEA - ABE

$205 Find Cheap Flights from Seattle to Allentown - Compare and Save

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 7/29. 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
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Everything you should know

Cheapest round-trip
$349
Typical prices: $472-$590
American Airlines
Wed 9/9Sun 9/13
SEA - ABE • 1 stop
Cheapest one-way
$205
Overall average: $538
American Airlines
Wed 7/29
SEA - ABE • 1 stop
Top airlines
Cheapest • from $349 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Seattle and Allentown. You'll need at least 1 connection.
Insights
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Insights
Top layover airports
Cheapest • Avg $472 (round-trip)
Shortest trip • 7h 47m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
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Good to know
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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 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, Sep 9 - Sun, Sep 13
American Airlines Logo
6:15 am - 4:40 pm
SEA
-
ABE
7h 25m
1 stop
American Airlines Logo
5:10 pm - 12:11 am
ABE
-
SEA
10h 01m
1 stop
$349American Airlines
Wed, Aug 12 - Wed, Aug 19
American Airlines Logo
5:50 am - 4:42 pm
SEA
-
ABE
7h 52m
1 stop
American Airlines Logo
9:36 am - 2:45 pm
ABE
-
SEA
8h 09m
1 stop
$373American Airlines
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
7:00 am - 3:08 pm
SEA
-
ABE
29h 08m
1 stop
Multiple Airlines Logo
7:30 am - 12:27 am
ABE
-
SEA
19h 57m
1 stop
$392Multiple Airlines
Thu, Sep 17 - Mon, Sep 21
American Airlines Logo
10:59 am - 10:17 pm
SEA
-
ABE
8h 18m
1 stop
American Airlines Logo
5:10 pm - 12:11 am
ABE
-
SEA
10h 01m
1 stop
$393American Airlines
Wed, Aug 12 - Wed, Aug 19
United Airlines Logo
5:20 pm - 9:57 am
SEA
-
ABE
13h 37m
2 stops
United Airlines Logo
5:36 pm - 10:43 pm
ABE
-
SEA
8h 07m
1 stop
$417United Airlines
Wed, Sep 9 - Sun, Sep 13
Delta Logo
6:00 am - 10:26 pm
SEA
-
ABE
13h 26m
2 stops
Delta Logo
6:08 pm - 11:59 pm
ABE
-
SEA
8h 51m
1 stop
$429Delta
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
9:16 pm - 3:08 pm
SEA
-
ABE
14h 52m
2 stops
Multiple Airlines Logo
7:30 am - 12:27 am
ABE
-
SEA
19h 57m
1 stop
$438Multiple Airlines
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
9:16 pm - 3:08 pm
SEA
-
ABE
14h 52m
2 stops
Multiple Airlines Logo
7:30 am - 12:27 am
ABE
-
SEA
19h 57m
1 stop
$446Multiple Airlines
Thu, Sep 17 - Mon, Sep 21
Delta Logo
6:00 am - 10:26 pm
SEA
-
ABE
13h 26m
2 stops
Delta Logo
6:08 pm - 11:59 pm
ABE
-
SEA
8h 51m
1 stop
$454Delta
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
9:16 pm - 3:08 pm
SEA
-
ABE
14h 52m
2 stops
Multiple Airlines Logo
7:30 am - 12:27 am
ABE
-
SEA
19h 57m
1 stop
$457Multiple 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.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Allentown, 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 Seattle to Allentown is March, where tickets cost $0 (return) on average. On the other hand, the most expensive months are July and February, where the average cost of round-trip tickets is $759 and $734 respectively.

Good to know

Cheapest flight$205
Most popular time to fly and prices are also 23% 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 5 days, the lowest price for a flight from Seattle to Allentown was $205 for a one-way ticket and $349 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?

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Allentown are United Airlines and American Airlines. With an average price for the route of $443 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 $478 and an overall rating of 7.1.

  • 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 airlines flying 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.
7.4
United AirlinesOverall score based on 9899 reviews
7.1Entertainment
8.1Crew
7.3Comfort
6.6Food
7.7Boarding
Airline reviews

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.

4.0 OkayOlivia, Jun 2026
SEA - SFO
Read more United Airlines reviews

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.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Delayed by 2.5hrs any longer and they would’ve had to honour their own policy for breaking their own rules and regs. Not cool, especially when I have an infant child that needs to stay on a routine and they get schedules.

They had three choices for snacks - but you could only have one - and they ran out of the dark chocolate before they made it all the way down the aisle... Packed flight - limited service.

They opened my checked bag and even though my lock was tsa approved, they loose my lock and left my bag just like that. Incompetent people, very upset about it. I’ll try to avoid traveling with united

We fly to Ecuador frequently. Checking in is usually a hassle because most United agents take some time before they can verify that my passport doesn't require a visa to Ecuador. This time the process was even longer due to the cyber attack. But she was really nice to us. So glad we brought plenty of snacks to supplement the 3 flights from SEA to GYE.

We had selected seats in the app that were a 2x2 format in the middle of the plane. Our seats when we got on the plane had been moved to the back rows in a 3x1 format. What’s the point of paying up for tickets that allow seat selection if the airline will just change them?

The new Airbus A231neo has neat tech but the economy seats are so tight together that I always had my shoulders against one passenger or the other. I was very miffed that Basic Economy REQUIRES check-in of bags other than your personal carry-on; if you want to offer low-cost airline prices and then add services for a fee, just let me carry on my duffel. Hell, I could have put my carry on IN the duffel and called it a day but the gate agent would not let me; I ended up paying $40 for the risk of losing my bag. Not the worst flight, but far from the best.

Terrible Initial delay for almost an hour before boarding and departing in Seattle. Then a “customary” wait on the tarmac in Newark after landing for half an hour. I call it customary because it happens almost every time I land in Newark. I do t know if it’s Newark or United airline but it’s a travesty . I use Newark because it’s closer than jfk to where I live but am strongly considering switching because of extremely poor in time performance and Condé and delay after landing

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

Great flight - friendly and attentive team! Seats in coach were comfy, but a little cramped - but that is the case with all airlines ;)

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Dreadful experience. Our flight was delayed more than 8 hours due to a maintenance issue and the assistance from rebooking was poor. I was travelling with a bad knee and needed assistance waited in one place more than 3 hours before someone came with a wheelchair. The woman next to me was a 91 year old great grandmother who had waited more than 4 hours. There were moments of support from the staff but it appeared as they were going against the direction of management. It was apathy, lack of ownership and dismissive responses with small moments of kindness and understanding typically from grey haired, female, veteran staff..

Everything was great except it became so hot on the plane I couldn’t sleep on my red eye flight. It didn’t really cool down till we started descending.

The only thing is if Wi-Fi is available after you land and taxi to the gate. It takes forever to get to the gate, and having the Wi-Fi continue would be great to bide the time at least 5 minutes before you arrive at the entrance. That is my only comment; otherwise, everything was good.

Airplane was cold. Flight attendants were rude. Phone charger did not work. No food available.

Experience was fine. Seats were cramped, and we had to wait for repairs before we could take of. Even though the door remained open, we were warned that leaving the plane could cause difficulty trying to fly out later. Staff was pleasant, and climate control was fortunately working. We had trouble at the DFW terminal, but I don't think that was AA's fault.

Terrible. I did not like the delay without recourses to help passengers to get to their destinations. AA used to offer coupons for food and overnight accommodation, but not this time. The flight planning was terrible despite of all the current technology available; AA could have informed passengers better that the replacement flight is impossible today, instead of stringing passengers along for 6 hours before cancellation, so that passengers can make earlier alternative arrangements to get home.

It was a bus not a flight. Okay bus ride.

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

Information on your arrival and departure airports