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$149+ Cheap flights from Allentown to Seattle (ABE - SEA)

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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — SEA
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Allentown to Seattle

Cheapest flights from Allentown to Seattle
Explore the most affordable flight options available from Allentown to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/212:30 pmABE - SEA
2 stops13h 29mUnited Airlines
Wed 12/315:02 amSEA - ABE
2 stops13h 45mUnited Airlines
Deal found 12/14$549
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:17 amABE - SEA
1 stop8h 46mUnited Airlines
Wed 12/315:02 amSEA - ABE
2 stops13h 45mUnited Airlines
Deal found 12/14$583
This American Airlines deal was found by Cheapflights users on 12/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:04 amABE - SEA
1 stop9h 33mAmerican Airlines
Sun 1/410:13 pmSEA - ABE
1 stop10h 07mAmerican Airlines
Deal found 12/14$586
This American Airlines deal was found by Cheapflights users on 12/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:04 amABE - SEA
1 stop9h 33mAmerican Airlines
Wed 12/3110:13 pmSEA - ABE
1 stop10h 07mAmerican Airlines
Deal found 12/14$612
This Delta deal was found by Cheapflights users on 12/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:25 amABE - SEA
1 stop8h 56mDelta
Wed 12/3112:00 pmSEA - ABE
1 stop7h 46mDelta
Deal found 12/14$624
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/212:30 pmABE - SEA
2 stops13h 29mUnited Airlines
Thu 1/111:59 pmSEA - ABE
1 stop13h 31mUnited Airlines
Deal found 12/14$647
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:17 amABE - SEA
1 stop8h 46mUnited Airlines
Wed 12/315:02 amSEA - ABE
2 stops13h 45mUnited Airlines
Deal found 12/14$650
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/212:30 pmABE - SEA
2 stops13h 29mUnited Airlines
Mon 12/293:50 pmSEA - ABE
2 stops19h 05mUnited Airlines
Deal found 12/14$652

Find flight deals from Allentown to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to Seattle (SEA). 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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$261
(American Airlines)

One-way from

$149
(United Airlines)

Popular in

July

Cheapest in

October

Average price

$631
Provider with most accurate pricing for Allentown-Bethlehem-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Allentown-Bethlehem-Seattle/Tacoma Intl flights.
Search Deals
From Allentown-Bethlehem to Seattle/Tacoma Intl
Search Deals
One-way flight from Allentown-Bethlehem to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($115 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Allentown to Seattle 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 December 15, 2025.
Use the filters below to find and compare flights from Allentown to Seattle that are best for you.

Fly from

Allentown

Fly to

Seattle

Route

Depart

Return

Price

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Sat 1/31

6:15 am-11:32 am

1 stop8h 17m

Seattle/Tacoma Intl

Wed 2/4

5:10 pm-10:41 am

2 stops14h 31m

$413

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Wed 1/28

11:30 am-6:14 pm

1 stop9h 44m

Seattle/Tacoma Intl

Wed 2/4

2:10 pm-10:41 am

1 stop17h 31m

$446

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Thu 12/25

6:17 am-1:58 pm

2 stops10h 41m

Seattle/Tacoma Intl

Wed 12/31

5:02 am-9:47 pm

2 stops13h 45m

$588

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Wed 1/7

6:15 am-11:32 am

1 stop8h 17m

$149

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Wed 1/7

11:00 am-11:21 am

3 stops51h 21m

$220

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 1/23

6:28 am-12:20 pm

1 stop8h 52m

$240

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Wed 12/31

2:00 pm-8:43 pm

1 stop9h 43m

$500

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Wed 12/31

5:07 pm-9:55 am

2 stops19h 48m

$669

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Compare providers for flights from Allentown to Seattle

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 Allentown to Seattle in December.
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 Allentown-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Allentown-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Allentown-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Allentown-Seattle 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 Allentown-Seattle 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 Allentown to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Allentown 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 Allentown to Seattle

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

Currently, March is the cheapest month in which you can book a flight from Allentown to Seattle (average of $157). Flying from Allentown to Seattle in July is currently the most expensive (average of $277). 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 ABE to SEA?

Find hourly flight availability from Allentown to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

It’s typically best to fly out from Allentown to Seattle in the evening. Doing so could potentially save you 75% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated December 15, 2025.
Get a feel of what it's like to fly with United Airlines and American Airlines from Allentown to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,092 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,092 reviews
United Airlines
7.4
Good
9,092 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
American Airlines
7.2
Good
11,052 reviews
United Airlines
7.4
Good
9,092 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

Find useful and relevant information for your journey from Allentown to Seattle. 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 Allentown to Seattle?

    A quick flight from Allentown to Seattle can take about 8h 17m. United Airlines provides one of the quickest options available for as low as $413. The distance between Allentown and Seattle is about 2336 mi.

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

    Cheapflights users have booked flights from Allentown to Seattle round-trip from $293. Another airline that can offer you cheap pricing is American Airlines. These flights start at 44% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Allentown to Seattle 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 Allentown to Seattle?

    Currently, March is the cheapest month in which you can book a flight from Allentown to Seattle (average of $157). Flying from Allentown to Seattle in July is currently the most expensive (average of $277). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Kent
Tukwila
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Allentown to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Allentown to Seattle

Discover the top 2 airlines that operate flights from Allentown to Seattle. 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$293Average$622FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$298Average$467FlexibilityNo cancel feeOn-time71%

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