HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Allentown

$189+ Cheap flights from Seattle to Allentown (SEA - ABE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ABE
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Allentown with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seattle to Allentown

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Allentown (ABE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$339
(American Airlines)

One-way from

$189
(United Airlines)

Popular in

December

Cheapest in

August

Average price

$496
From Seattle/Tacoma Intl to Allentown-Bethlehem
Search Deals
One-way flight from Seattle/Tacoma Intl to Allentown-Bethlehem
Search Deals
Highest demand for flights based on searches. 40% potential increase in price ($467 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($57 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Seattle to Allentown

Cheapest flights from Seattle to Allentown
Explore the most affordable flight options available from Seattle to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2211:40 pmSEA - ABE
1 stop7h 58mUnited Airlines
Sat 10/255:28 pmABE - SEA
1 stop8h 02mUnited Airlines
Deal found 9/17$339
This American Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:31 amSEA - ABE
2 stops9h 59mAmerican Airlines
Thu 12/116:10 amABE - SEA
1 stop9h 37mAmerican Airlines
Deal found 9/17$368
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/312:41 amSEA - ABE
2 stops12h 10mAmerican Airlines
Mon 11/101:46 pmABE - SEA
1 stop9h 53mAmerican Airlines
Deal found 9/15$389
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/88:43 pmSEA - ABE
1 stop15h 59mMultiple Airlines
Sun 10/127:30 amABE - SEA
1 stop27h 03mMultiple Airlines
Deal found 9/14$405
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/411:40 amSEA - ABE
1 stop7h 35mDelta
Tue 11/116:00 pmABE - SEA
1 stop8h 59mDelta
Deal found 9/15$413
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:00 amSEA - ABE
2 stops25h 24mMultiple Airlines
Sun 10/57:30 amABE - SEA
1 stop20h 00mMultiple Airlines
Deal found 9/16$414
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:00 amSEA - ABE
1 stop8h 20mDelta
Tue 11/116:00 pmABE - SEA
1 stop8h 59mDelta
Deal found 9/15$457
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3011:59 pmSEA - ABE
1 stop8h 49mUnited Airlines
Sat 11/15:22 pmABE - SEA
1 stop8h 23mUnited Airlines
Deal found 9/17$473

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Allentown that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Seattle to Allentown that are best for you.

Fly from

Seattle

Fly to

Allentown

Route

Depart

Return

Price

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 10/22

11:40 pm-10:38 am

1 stop7h 58m

Allentown-Bethlehem

Sat 10/25

5:28 pm-10:30 pm

1 stop8h 02m

$339

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 12/3

12:31 am-1:30 pm

2 stops9h 59m

Allentown-Bethlehem

Thu 12/11

6:10 am-12:47 pm

1 stop9h 37m

$368

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 10/8

8:43 pm-3:42 pm

1 stop15h 59m

Allentown-Bethlehem

Sun 10/12

7:30 am-7:33 am

1 stop27h 03m

$405

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Tue 3/10

6:00 am-5:13 pm

1 stop8h 13m

Allentown-Bethlehem

Wed 3/11

5:40 pm-12:16 am

1 stop9h 36m

$437

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 11/5

6:00 am-5:20 pm

1 stop8h 20m

Allentown-Bethlehem

Tue 11/11

6:00 pm-11:59 pm

1 stop8h 59m

$457

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Thu 10/30

11:59 pm-11:48 am

1 stop8h 49m

Allentown-Bethlehem

Sat 11/1

5:22 pm-10:45 pm

1 stop8h 23m

$473

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 10/8

11:40 pm-10:38 am

1 stop7h 58m

$189

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Fri 10/17

11:56 pm-1:26 pm

1 stop10h 30m

$189

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Mon 11/17

12:41 am-3:51 pm

2 stops12h 10m

$194

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Tue 11/18

10:53 am-9:41 pm

1 stop7h 48m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 13 results
1
2

Best time to book a flight from Seattle to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Seattle to Allentown?

Currently, February is the cheapest month in which you can book a flight from Seattle to Allentown (average of $289). Flying from Seattle to Allentown in December is currently the most expensive (average of $383). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to ABE?

Find hourly flight availability from Seattle to Allentown. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

When flying from Seattle to Allentown, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 25% versus a flight in the morning.

Reviews of airlines servicing Allentown

Get insights into the airlines that provide service to Allentown. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Allentown. Reviews last updated September 17, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Seattle to Allentown. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Allentown. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Allentown?

    Departing from Seattle to Allentown will take you 7h 44m. Seattle and Allentown are separated by a distance of 2336 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to Allentown round-trip?

    Currently priced at $297, Delta will fly you from Seattle to Allentown and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $372 and $383, respectively. These flights start at 56% lower than the current average price 3 months from now.

  • Can I find deals for flights from Seattle to Allentown that include hotel bookings?

    Yes. In addition to deals on Seattle to Allentown flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Allentown?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Allentown.

  • Can I find deals for business class flights from Seattle to Allentown?

    Yes. Cheapflights offers flight deals from Seattle to Allentown by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Allentown?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Allentown (average of $289). Flying from Seattle to Allentown in December is currently the most expensive (average of $383). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Other flights to Allentown

Explore flights to Allentown departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 17, 2025.
Myrtle Beach to Allentown flights
Fort Lauderdale to Allentown flights
Orlando to Allentown flights
Nashville to Allentown flights
Melbourne to Allentown flights
Orlando Sanford Intl to Allentown flights
Allentown to Myrtle Beach flights
Allentown to Melbourne, Florida flights
Allentown to Denver flights
Allentown to Fort Lauderdale flights
Allentown to Orlando Airport flights
Allentown to Orlando Sanford Intl Airport flights
Allentown to Melbourne, Florida flights
Allentown to Tampa flights
Allentown to Sarasota flights
Allentown to Philadelphia flights
Allentown to Fort Lauderdale flights
Allentown to Nashville flights
Allentown to Orlando Sanford Intl Airport flights
Allentown to Orlando Airport flights
Allentown to Charlotte flights
Allentown to Myrtle Beach flights
Allentown to Sarasota flights
Allentown to Tampa flights

Top 3 airlines flying from Seattle to Allentown

Discover the top 3 airlines that operate flights from Seattle to Allentown. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$297Average$647FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$372Average$585FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$383Average$534FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.