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Allentown

$257+ Cheap flights from Seattle to Allentown (SEA - ABE)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ABE
Dec 29 — Jan 51
Mon 12/29
Mon 1/5
1 adult, Economy
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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 November 29, 2025.

This United Airlines deal was found by Cheapflights users on 11/28. 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.
Sat 12/1310:40 amSEA - ABE
1 stop8h 06mUnited Airlines
Wed 12/175:22 pmABE - SEA
1 stop8h 06mUnited Airlines
Deal found 11/28$489
This United Airlines deal was found by Cheapflights users on 11/28. 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.
Tue 12/167:34 pmSEA - ABE
2 stops13h 18mUnited Airlines
Mon 12/222:30 pmABE - SEA
1 stop11h 17mUnited Airlines
Deal found 11/28$538
This United Airlines deal was found by Cheapflights users on 11/27. 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.
Fri 12/1210:40 amSEA - ABE
1 stop8h 09mUnited Airlines
Tue 12/165:22 pmABE - SEA
1 stop8h 06mUnited Airlines
Deal found 11/27$539
This Delta deal was found by Cheapflights users on 11/29. 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.
Thu 12/46:00 amSEA - ABE
1 stop8h 14mDelta
Sun 12/76:00 pmABE - SEA
1 stop8h 58mDelta
Deal found 11/29$569
This United Airlines deal was found by Cheapflights users on 11/28. 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.
Tue 12/167:34 pmSEA - ABE
2 stops13h 18mUnited Airlines
Sat 12/205:07 pmABE - SEA
1 stop8h 40mUnited Airlines
Deal found 11/28$573
This United Airlines deal was found by Cheapflights users on 11/28. 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.
Tue 12/1610:40 amSEA - ABE
1 stop8h 06mUnited Airlines
Sun 12/215:07 pmABE - SEA
1 stop8h 40mUnited Airlines
Deal found 11/28$583
This United Airlines deal was found by Cheapflights users on 11/28. 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.
Tue 12/1610:40 amSEA - ABE
1 stop8h 06mUnited Airlines
Tue 12/232:30 pmABE - SEA
1 stop11h 17mUnited Airlines
Deal found 11/28$589
This United Airlines deal was found by Cheapflights users on 11/27. 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.
Fri 12/57:34 pmSEA - ABE
2 stops13h 18mUnited Airlines
Sun 12/75:22 pmABE - SEA
1 stop8h 06mUnited Airlines
Deal found 11/27$594

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 November 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$257
(Delta)

Popular in

December

Cheapest in

August

Average price

$650
Provider with most accurate pricing for Seattle/Tacoma Intl-Allentown-Bethlehem flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Allentown-Bethlehem flights.
Search Deals
From Seattle/Tacoma Intl to Allentown-Bethlehem
Search Deals
Highest demand for flights based on searches. 33% potential increase in price ($314 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($61 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 29, 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 1/28

10:59 pm-12:05 pm

1 stop10h 06m

Allentown-Bethlehem

Sat 1/31

12:50 pm-7:00 pm

1 stop9h 10m

$257

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 1/28

5:10 pm-10:41 am

2 stops14h 31m

Allentown-Bethlehem

Sat 1/31

6:15 am-11:32 am

1 stop8h 17m

$262

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Sat 1/24

10:59 pm-12:05 pm

1 stop10h 06m

Allentown-Bethlehem

Wed 1/28

5:59 pm-8:53 am

2 stops17h 54m

$341

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Sat 1/31

6:15 am-5:14 pm

1 stop7h 59m

Allentown-Bethlehem

Wed 2/4

6:28 am-7:38 pm

2 stops16h 10m

$341

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Sat 1/24

6:00 am-10:26 pm

2 stops13h 26m

Allentown-Bethlehem

Wed 1/28

1:02 pm-9:47 pm

2 stops11h 45m

$367

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Sat 1/31

8:40 am-9:05 pm

2 stops9h 25m

Allentown-Bethlehem

Wed 2/4

11:30 am-9:15 pm

2 stops12h 45m

$367

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Sat 12/13

7:29 pm-11:52 am

2 stops13h 23m

Allentown-Bethlehem

Wed 12/17

1:00 pm-12:50 am

2 stops14h 50m

$499

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Fri 12/12

10:40 am-9:49 pm

1 stop8h 09m

Allentown-Bethlehem

Tue 12/16

5:22 pm-10:28 pm

1 stop8h 06m

$539

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/28

Compare providers for flights from Seattle to Allentown

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Allentown in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Allentown flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Allentown flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Allentown flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Allentown flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Allentown flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, October is the cheapest month in which you can book a flight from Seattle to Allentown (average of $177). Flying from Seattle to Allentown in July is currently the most expensive (average of $286). 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 November 29, 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 in the afternoon, which can drop the price by up to 75% versus a flight at noon.

How much does it cost to fly round-trip from Seattle to Allentown?

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 November 29, 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
7.9
Good
8,011 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,011 reviews
Delta
7.9
Good
8,011 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,058 reviews
Delta
7.9
Good
8,011 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,043 reviews
Delta
7.9
Good
8,011 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 10h 06m. 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 $308 and $383, respectively. These flights start at 52% 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, October is the cheapest month in which you can book a flight from Seattle to Allentown (average of $177). Flying from Seattle to Allentown in July is currently the most expensive (average of $286). 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

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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 November 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$297Average$647FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$308Average$567FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$383Average$534FlexibilityNo cancel feeOn-time69%

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