SEA - ABE

$180 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 2/10. 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 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
$262
Overall average: $408
American Airlines
Wed 1/28Sat 1/31
SEA - ABE • 2 stops
Cheapest one-way
$180
Typical prices: $174-$242
Delta
Tue 2/10
SEA - ABE • 1 stop
Top airlines
American Airlines
Cheapest • from $262 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
January
Cheapest • 29% price drop
January
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 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, Jan 28 - Sat, Jan 31
American Airlines Logo
7:00 am - 10:26 pm
SEA
-
ABE
12h 26m2 stops
American Airlines Logo
1:02 pm - 7:04 pm
ABE
-
SEA
9h 02m1 stop
$262American Airlines
Fri, Feb 6 - Sun, Feb 8
United Airlines Logo
7:30 pm - 10:41 am
SEA
-
ABE
12h 11m2 stops
United Airlines Logo
6:15 am - 11:32 am
ABE
-
SEA
8h 17m1 stop
$362United Airlines
Wed, Jan 28 - Sat, Jan 31
United Airlines Logo
7:32 pm - 10:41 am
SEA
-
ABE
12h 09m2 stops
United Airlines Logo
6:15 am - 3:44 pm
ABE
-
SEA
12h 29m2 stops
$367United Airlines
Wed, Jan 28 - Sat, Jan 31
United Airlines Logo
10:58 am - 9:05 pm
SEA
-
ABE
7h 07m1 stop
United Airlines Logo
6:15 am - 11:32 am
ABE
-
SEA
8h 17m1 stop
$407United Airlines
Fri, Feb 6 - Sun, Feb 8
United Airlines Logo
7:30 pm - 10:41 am
SEA
-
ABE
12h 11m2 stops
United Airlines Logo
6:15 am - 3:44 pm
ABE
-
SEA
12h 29m2 stops
$417United Airlines
Sat, Jan 17 - Wed, Jan 21
United Airlines Logo
7:00 am - 10:41 am
SEA
-
ABE
24h 41m1 stop
United Airlines Logo
11:30 am - 6:14 pm
ABE
-
SEA
9h 44m1 stop
$446United Airlines
Sat, Jan 17 - Wed, Jan 21
United Airlines Logo
7:00 am - 10:41 am
SEA
-
ABE
24h 41m1 stop
United Airlines Logo
6:15 am - 6:26 pm
ABE
-
SEA
15h 11m2 stops
$451United Airlines
Sat, Jan 17 - Wed, Jan 21
United Airlines Logo
12:40 pm - 10:41 am
SEA
-
ABE
19h 01m2 stops
United Airlines Logo
11:30 am - 9:15 pm
ABE
-
SEA
12h 45m2 stops
$456United Airlines
Sat, Jan 17 - Wed, Jan 21
United Airlines Logo
8:10 am - 10:41 am
SEA
-
ABE
23h 31m3 stops
United Airlines Logo
11:30 am - 9:15 pm
ABE
-
SEA
12h 45m2 stops
$482United Airlines
Sat, Apr 11 - Fri, Apr 17
Delta Logo
6:15 am - 5:17 pm
SEA
-
ABE
8h 02m1 stop
Delta Logo
5:59 pm - 11:58 pm
ABE
-
SEA
8h 59m1 stop
$659Delta
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 January, where tickets cost $408 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $835 and $769 respectively.

Good to know

Low seasonMarch
Cheapest flight$180
Best time to beat the crowds but there is an average 33% increase in price.
Most popular time to fly and prices are also 30% 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 $180 for a one-way ticket and $262 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 $435 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 8014 reviews
7.9Entertainment
8.5Crew
7.9Comfort
8.1Boarding
7.3Food
Airline reviews

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

2.0 MediocreBarbara, Dec 2025
PHL - MSP
Read more Delta reviews

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

Did not realize internet screen was hidden between seats and no info printed!!!!

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Very good flight crew and very nice people staff were incredible especially the gate agent

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

The flight was delayed for about 2 hrs. Other than it, it was good.

Advertised fruit trays with cheese, but only snacks handed out!

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

Flight delays both to Detroits and return flight . The flight to Detroit was associated with mechanical difficulty

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

cabin crew was OK, food was OK, the trip from the US to Munich was actually pretty bad comfort wise. Noisy aircraft, lights never dimmed even in Business class (night flight) barely sufficient amenities for the price. I have millions of miles with United but TBH American is gaining ground and Delta has always been marginally better then United although on paper United has more longes and cheaper upgrades.

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Great flight. On time boarding. Smooth flight and on time arrival at EWR. The flight crew was marvelous and there was a great selection of movies on the entertainment system. Our bags were at the carousel before we got there. Another excellent flight from United.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

They did the one thing that really matters - got to Chicago early.

I liked the snacks and the flight attendants were friendly.

Very turbulent trip made it pretty bearable, plus the lack of refreshments served and the lack of any air conditioning before takeoff which took an hour or more.

Flight was late - I was downgraded from first class to coach

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

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

Flight was on time is the only good thing. Person loading the plane called 1-6 to board at the same time, made it chaotic. Plane was too small for even putting backpacks in overhead. Seat for normal sized people were too small. The WIFI didn't work. When we landed had to wait because not enough ground crew.

the trip to madrid was uncomfortable with my legs touching the seat in front of me

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

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

Internet was a bit expensive and did not work ask that week otherwise a good flight

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..

The flight had a delay that made me being in a real rush to take the second flight. The delay was almost for 2 hours. They moved us from gate to gate in 4 times. Once I arrived to Philadelphia, I got to run thorough all the airport, as the train was already closed by that time. So I got sick with asthma for all the running I had to do. And I was the last one to board, when it was almost closed. So irresponsable with the people

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

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

Information on your arrival and departure airports