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Allentown

$255+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ABE
Jun 18 — Jun 251
Thu 6/18
Thu 6/25
1 adult, Economy
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Cheap 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 May 19, 2026.

This American Airlines deal was found by Cheapflights users on 5/18. 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 6/176:00 am
SEA
-
ABE
1 stop7h 38m
American Airlines
Tue 6/235:16 pm
ABE
-
SEA
1 stop10h 25m
American Airlines
Deal found 5/18$398
This American Airlines deal was found by Cheapflights users on 5/19. 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.
Thu 8/206:00 am
SEA
-
ABE
1 stop7h 41m
American Airlines
Sat 8/229:33 am
ABE
-
SEA
1 stop7h 59m
American Airlines
Deal found 5/19$433
This Delta deal was found by Cheapflights users on 5/19. 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.
Fri 9/119:05 am
SEA
-
ABE
2 stops10h 51m
Delta
Mon 9/141:00 pm
ABE
-
SEA
1 stop10h 38m
Delta
Deal found 5/19$439
This American Airlines deal was found by Cheapflights users on 5/18. 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.
Fri 6/56:00 am
SEA
-
ABE
1 stop7h 38m
American Airlines
Tue 6/95:16 pm
ABE
-
SEA
1 stop10h 25m
American Airlines
Deal found 5/18$444
This Delta deal was found by Cheapflights users on 5/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:30 am
SEA
-
ABE
1 stop7h 48m
Delta
Thu 5/286:15 pm
ABE
-
SEA
1 stop8h 44m
Delta
Deal found 5/17$458
This United Airlines deal was found by Cheapflights users on 5/17. 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.
Tue 10/2711:50 pm
SEA
-
ABE
1 stop7h 16m
United Airlines
Sat 10/315:36 pm
ABE
-
SEA
1 stop7h 53m
United Airlines
Deal found 5/17$459
This American Airlines deal was found by Cheapflights users on 5/19. 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.
Fri 6/125:15 am
SEA
-
ABE
1 stop8h 59m
American Airlines
Mon 6/155:16 pm
ABE
-
SEA
1 stop10h 25m
American Airlines
Deal found 5/19$477
This United Airlines deal was found by Cheapflights users on 5/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2210:40 pm
SEA
-
ABE
1 stop8h 23m
United Airlines
Fri 5/2910:42 am
ABE
-
SEA
2 stops13h 11m
United Airlines
Deal found 5/15$485
This Delta deal was found by Cheapflights users on 5/15. 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.
Fri 5/2211:59 pm
SEA
-
ABE
2 stops14h 29m
Delta
Fri 5/296:23 am
ABE
-
SEA
2 stops13h 14m
Delta
Deal found 5/15$490

Find 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 May 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$398
(American Airlines)

One-way from

$255
(United Airlines)

Popular in

February

Cheapest in

December

Average price

$696
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
One-way flight from Seattle/Tacoma Intl to Allentown-Bethlehem
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 May 19, 2026.
Use the filters below to find and compare flights from Seattle to Allentown that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Fri 9/11

9:05 am-10:56 pm

2 stops10h 51m

Allentown-Bethlehem

Mon 9/14

1:00 pm-8:38 pm

1 stop10h 38m

$439
Quickest round-trip

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Tue 10/27

11:50 pm-10:06 am

1 stop7h 16m

Allentown-Bethlehem

Sat 10/31

5:36 pm-10:29 pm

1 stop7h 53m

$459
Cheapest one-way
Quickest one-way

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 5/27

10:40 pm-10:03 am

1 stop8h 23m

$255

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Fri 6/12

5:15 am-5:14 pm

1 stop8h 59m

$259

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 5/27

11:59 pm-5:28 pm

2 stops14h 29m

$260

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Fri 6/5

7:50 pm-8:46 pm

2 stops21h 56m

$289

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Sat 6/6

5:30 am-10:18 pm

2 stops13h 48m

$308

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Sun 7/19

11:59 pm-12:22 pm

1 stop9h 23m

$308

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Mon 7/20

10:58 pm-12:22 pm

1 stop10h 24m

$340

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Fri 7/3

11:59 pm-1:25 pm

1 stop10h 26m

$340

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/19

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Allentown flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

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 May 19, 2026.
Read reviews from past customers who have flown 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.
United Airlines
7.4
Good
9,734 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,734 reviews
United Airlines
7.4
Good
9,734 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
American Airlines
7.1
Good
11,648 reviews
United Airlines
7.4
Good
9,734 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 16m. 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 $292, United Airlines will fly you from Seattle to Allentown and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on American Airlines for as low as $308. These flights start at 47% 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Seattle to Allentown

Discover the top 2 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 May 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$292Average$443FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$308Average$506FlexibilityNo cancel feeOn-time71%

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