ABE - SEA

$209 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 8/9. 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

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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Flights Deals

Cheap Flights from Allentown to Seattle

 
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.

Recent round-trip flight deals from Allentown to Seattle

KAYAK's recommended round-trip deals from the most popular airlines that fly from Allentown to Seattle.
Discover the best prices for you by selecting your travel dates on KAYAK.
Delta Logo
6:00 am - 6:56 pmABE-SEA
15h 56m2 stops
Delta Logo
6:00 am - 5:24 pmSEA-ABE
8h 24m1 stop
$487Delta
Find Deal
Tue, Jul 29 - Tue, Aug 5
 Logo
12:44 pm - 2:25 pmABE-SEA
28h 41m3 stops
 Logo
3:58 pm - 10:52 amSEA-ABE
15h 54m2 stops
Fri, Jun 6 - Sat, Jun 14
 Logo
12:44 pm - 2:25 pmABE-SEA
28h 41m3 stops
 Logo
3:58 pm - 11:39 pmSEA-ABE
28h 41m3 stops
Fri, Jun 6 - Sat, Jun 14
Delta Logo
6:00 am - 6:56 pmABE-SEA
15h 56m2 stops
Delta Logo
11:30 pm - 12:16 pmSEA-ABE
9h 46m1 stop
$506Delta
Find Deal
Wed, Jul 30 - Tue, Aug 5
Delta Logo
6:00 am - 6:56 pmABE-SEA
15h 56m2 stops
Delta Logo
6:00 am - 5:24 pmSEA-ABE
8h 24m1 stop
$507Delta
Find Deal
Tue, Jul 29 - Sat, Aug 2
American Airlines Logo
2:56 pm - 10:09 pmABE-SEA
10h 13m1 stop
American Airlines Logo
6:39 am - 5:58 pmSEA-ABE
8h 19m1 stop
$517American Airlines
Find Deal
Wed, Aug 6 - Tue, Aug 12
United Airlines Logo
5:35 pm - 11:59 pmABE-SEA
9h 24m1 stop
United Airlines Logo
12:20 am - 9:55 pmSEA-ABE
18h 35m1 stop
$522United Airlines
Find Deal
Tue, Aug 5 - Tue, Aug 12
Delta Logo
6:00 am - 6:56 pmABE-SEA
15h 56m2 stops
Delta Logo
6:00 am - 5:24 pmSEA-ABE
8h 24m1 stop
$526Delta
Find Deal
Wed, Jul 30 - Sat, Aug 2
United Airlines Logo
5:35 pm - 10:42 pmABE-SEA
8h 07m1 stop
United Airlines Logo
12:20 am - 9:55 pmSEA-ABE
18h 35m1 stop
$532United Airlines
Find Deal
Tue, Jul 29 - Tue, Aug 5
American Airlines Logo
8:26 am - 3:50 pmABE-SEA
10h 24m1 stop
American Airlines Logo
1:56 pm - 12:19 amSEA-ABE
7h 23m1 stop
$537American Airlines
Find Deal
Thu, Oct 16 - Sun, Oct 19
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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’s the cheapest day of the week to fly from Allentown to Seattle?

The average price of all round-trip flights from Allentown to Seattle clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Seattle on a Wednesday and more expensive on a Monday. On your return trip to Allentown, you should consider flying back on a Sunday, and avoid Saturdays for better deals.

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 $388 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $807 and $709 respectively.

How far in advance should I book a flight from Allentown to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from Allentown to Seattle, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonMarch
High seasonAugust
Cheapest flight$209
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 9% increase in price.
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 $209 for a one-way ticket and $487 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?

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

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

    The two airlines most popular with KAYAK users for flights from Allentown to Seattle are Delta and United Airlines. With an average price for the route of $638 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $681 and an overall rating of 7.4.

  • 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.

Top 3 airlines serving 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.
8.0
DeltaOverall score based on 7936 reviews
7.3Food
7.9Comfort
8.5Crew
7.9Entertainment
8.2Boarding
Airline reviews

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

8.0 ExcellentFredrick, Apr 2025GSO - DTW
Read more Delta reviews

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

A bit rush for transit. Food and entertainment are not available

Multiple delays and not straight answer from the United team

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

leg space better than expected. two washrooms for one plane isn't enough.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

It was a code share with Alaska - would have been great if I actually made it on the plane, claimed I didn’t have a ticket or a seat even thought I was checked in.

late again! but its my only option to not take 9 hours to get to Memphis

Almost everything was outstanding. First, we boarded on time and the flight crew did a great job getting everyone seated. Then the pilots took their time and care to make sure the plane was full de-iced three times as there was a bad ice storm a few hours earlier. The plane ride was smooth and comfortable and even the economy seats had decent room and comfort. Flight Attendant Lisa went above and beyond to make sure I was comfortable - she is outstanding. The only thing wrong with the flight, and it is something which needs to be addressed, is that the gate to gate time was over 6.5 hours and not one meal was served. The only thing offered to eat were two small cookies for a transcontinental flight - unacceptable. Charge me more but give me a meal for a long flight. Thankfully Lisa found something for me.

Very poor. Our special services attendant gave us incorrect information. I also was mishandled at landing. There was no wheelchair waiting. I fell deboarding the plane. Appalling!

I had a very unpleasant encounter with one man from customer service: he was extremely rude and miserable. And his condition was reflected on his decision to send me to the worst airport hotel and get an awful flight connection. My hotel shuttle had never arrived and I had to book another hotel. People served by other representatives got a much better treatment and deal.

The flight left a bit late, but arrived close to time expected…With the flight being close to full the crew did well serving drinks to all in a very timely fashion. The flight was a pleasure…

They didn't have any gluten-free snacks, oddly, which I require...or any flavored soda water or decaf tea options, which seems to be standard.

My flight back my reservations were list because they said I didn't pay my pet fee when I had a receipt

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

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