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$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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ABE
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$309
(American Airlines)

One-way from

$189
(Delta)

Popular in

December

Cheapest in

April

Average price

$526
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 ($428 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($52 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/10. 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 9/38:35 amSEA - ABE
1 stop10h 30mAmerican Airlines
Tue 9/92:37 pmABE - SEA
1 stop8h 22mAmerican Airlines
Deal found 6/10$309
This Delta deal was found by Cheapflights users on 6/11. 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 9/1011:35 amSEA - ABE
1 stop8h 04mDelta
Wed 9/175:40 pmABE - SEA
1 stop9h 31mDelta
Deal found 6/11$359
This Mytrip deal was found by Cheapflights users on 6/10. 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 7/23:58 pmSEA - ABE
3 stops24h 29mMultiple Airlines
Mon 7/71:01 pmABE - SEA
3 stops29h 02mMultiple Airlines
Deal found 6/10$448
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/410:56 amSEA - ABE
1 stop7h 59mUnited Airlines
Tue 7/85:35 pmABE - SEA
1 stop8h 07mUnited Airlines
Deal found 6/11$572

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 June 12, 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

8:35 am-10:05 pm

1 stop10h 30m

Allentown-Bethlehem

Tue 9/9

2:37 pm-7:59 pm

1 stop8h 22m

$309

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 9/10

11:35 am-10:39 pm

1 stop8h 04m

Allentown-Bethlehem

Wed 9/17

5:40 pm-12:11 am

1 stop9h 31m

$359

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 7/2

3:58 pm-7:27 pm

3 stops24h 29m

Allentown-Bethlehem

Mon 7/7

1:01 pm-3:03 pm

3 stops29h 02m

$448

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Fri 7/4

10:56 am-9:55 pm

1 stop7h 59m

Allentown-Bethlehem

Tue 7/8

5:35 pm-10:42 pm

1 stop8h 07m

$572

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 9/10

11:35 am-10:39 pm

1 stop8h 04m

$189

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Wed 9/10

5:26 am-6:30 pm

2 stops10h 04m

$194

SeattleAllentown

SEA - ABE

SEAABE

Seattle/Tacoma Intl

Tue 9/9

8:00 am-4:53 pm

3 stops29h 53m

$430

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 $292). 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 June 12, 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.

Rainfall in Allentown by month

Plan your trip to Allentown by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Allentown ranges from 2.7 - 5.0 inches per month. July is typically the wettest month, when rainfall can reach 5.0 in. February is typically the driest time to visit Allentown when rainfall is around 2.7 in.

Temperature in Allentown by month

Plan your trip to Allentown by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Allentown, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

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 June 12, 2025.
Read reviews from past customers who have flown Delta, United Airlines and American Airlines from Seattle to Allentown. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

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
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

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
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

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 $359 and $572, 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 Delta. According to our data, you can fly for as low as $189. Users have also found prices from $194 and $430 on American Airlines 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 $292). 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.

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$297Average$647FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$366Average$631FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$383Average$677FlexibilityNo cancel feeOn-time69%

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