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$284+ 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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ABE
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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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 July 3, 2025.

Round-trip from

$309
(American Airlines)

One-way from

$284
(American Airlines)

Popular in

December

Cheapest in

August

Average price

$697
From Seattle/Tacoma Intl to Allentown-Bethlehem
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One-way flight from Seattle/Tacoma Intl to Allentown-Bethlehem
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Highest demand for flights based on searches. 37% potential increase in price ($433 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 3, 2025.

This American Airlines deal was found by Cheapflights users on 7/2. 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 9/38:34 amSEA - ABE
1 stop10h 31mAmerican Airlines
Tue 9/92:37 pmABE - SEA
1 stop8h 22mAmerican Airlines
Deal found 7/2$309
This Delta deal was found by Cheapflights users on 7/1. 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 9/411:52 amSEA - ABE
1 stop7h 47mDelta
Mon 9/86:14 pmABE - SEA
2 stops18h 21mDelta
Deal found 7/1$443
This Mytrip deal was found by Cheapflights users on 7/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/305:30 pmSEA - ABE
2 stops25h 30mMultiple Airlines
Wed 8/63:31 pmABE - SEA
3 stops27h 54mMultiple Airlines
Deal found 7/1$486
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/268:45 amSEA - ABE
2 stops10h 09mUnited Airlines
Wed 9/36:37 amABE - SEA
2 stops11h 37mUnited Airlines
Deal found 7/1$766

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 July 3, 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 9/3

8:34 am-10:05 pm

1 stop10h 31m

Allentown-Bethlehem

Tue 9/9

2:37 pm-7:59 pm

1 stop8h 22m

$309

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Thu 9/4

11:52 am-10:39 pm

1 stop7h 47m

Allentown-Bethlehem

Mon 9/8

6:14 pm-9:35 am

2 stops18h 21m

$443

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 7/30

5:30 pm-10:00 pm

2 stops25h 30m

Allentown-Bethlehem

Wed 8/6

3:31 pm-4:25 pm

3 stops27h 54m

$486

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Tue 8/26

8:45 am-9:54 pm

2 stops10h 09m

Allentown-Bethlehem

Wed 9/3

6:37 am-3:14 pm

2 stops11h 37m

$766

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Sat 8/16

11:59 pm-1:26 pm

1 stop10h 27m

$284

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Fri 8/1

10:30 pm-12:15 pm

1 stop10h 45m

$310

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Sun 8/17

11:59 pm-8:38 pm

2 stops17h 39m

$347

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Fri 8/15

12:20 am-9:55 pm

1 stop18h 35m

$398

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

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 $290). Flying from Seattle to Allentown in December is currently the most expensive (average of $395). 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 July 3, 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 July 3, 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
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

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.

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

    Currently priced at $309, American Airlines will fly you from Seattle to Allentown and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $443 and $766, respectively. These flights start at 56% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Allentown one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $284. Users have also found prices from $310 and $398 on Delta and United Airlines, respectively.

  • 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 $290). Flying from Seattle to Allentown in December is currently the most expensive (average of $395). 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$297Average$647FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$372Average$591FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$383Average$690FlexibilityNo cancel feeOn-time69%

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