What airlines fly to Allentown?

Alaska Airlines, United Airlines and American Airlines are the top three most popular airlines that fly to Allentown from Seattle according to our data. Alaska Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Allentown. Keep in mind that there are 6 different airlines that fly to Allentown on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Allentown-Bethlehem?

United Airlines and Qatar Airways are the most popular carriers operating from Seattle/Tacoma Intl to Allentown-Bethlehem

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Allentown-Bethlehem Airport?

Prices for flights from Seattle/Tacoma Intl Airport to Allentown-Bethlehem Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Allentown-Bethlehem Airport?

As of October 2026, there are 2 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Allentown-Bethlehem Airport.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Allentown-Bethlehem Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Allentown-Bethlehem Airport.

What documentation or ID do you need to fly to Allentown-Bethlehem Airport?

The necessary travel and health documents for your Allentown-Bethlehem Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$348 Cheap Flights from Seattle to Allentown in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Allentown

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:38 am - 10:28 pmSEA Seattle/Tacoma Intl-ABE Allentown-Bethlehem

8h 50m1 stop Chicago O'Hare Intl

7:17 am - 1:54 pmABE Allentown-Bethlehem-SEA Seattle/Tacoma Intl

9h 37m1 stop Chicago O'Hare Intl

$417American Airlines

Sun, Feb 28 - Wed, Mar 10

9:45 pm - 11:13 amSEA Seattle/Tacoma Intl-ABE Allentown-Bethlehem

10h 28m1 stop Charlotte Douglas

6:15 pm - 12:35 amABE Allentown-Bethlehem-SEA Seattle/Tacoma Intl

9h 20m1 stop Chicago O'Hare Intl

$417American Airlines

Wed, Nov 11 - Sat, Nov 14

11:50 am - 10:46 pmSEA Seattle/Tacoma Intl-ABE Allentown-Bethlehem

7h 56m1 stop Atlanta Hartsfield-Jackson

5:40 pm - 12:09 amABE Allentown-Bethlehem-SEA Seattle/Tacoma Intl

9h 29m1 stop Atlanta Hartsfield-Jackson

$419Delta

Wed, Feb 3 - Sun, Feb 7

6:00 am - 5:12 pmSEA Seattle/Tacoma Intl-ABE Allentown-Bethlehem

8h 12m1 stop Atlanta Hartsfield-Jackson

5:40 pm - 12:09 amABE Allentown-Bethlehem-SEA Seattle/Tacoma Intl

9h 29m1 stop Atlanta Hartsfield-Jackson

$419Delta

Tue, Feb 2 - Sat, Feb 6

11:50 am - 10:46 pmSEA Seattle/Tacoma Intl-ABE Allentown-Bethlehem

7h 56m1 stop Atlanta Hartsfield-Jackson

5:40 pm - 12:09 amABE Allentown-Bethlehem-SEA Seattle/Tacoma Intl

9h 29m1 stop Atlanta Hartsfield-Jackson

$419Delta

Wed, Feb 3 - Sat, Feb 6

10:43 am - 10:59 pmSEA Seattle/Tacoma Intl-ABE Allentown-Bethlehem

9h 16m1 stop Chicago O'Hare Intl

6:15 pm - 12:35 amABE Allentown-Bethlehem-SEA Seattle/Tacoma Intl

9h 20m1 stop Chicago O'Hare Intl

$442American Airlines

Sun, Nov 1 - Wed, Nov 11

5:00 am - 4:59 pmSEA Seattle/Tacoma Intl-ABE Allentown-Bethlehem

8h 59m1 stop Charlotte Douglas

7:17 am - 1:54 pmABE Allentown-Bethlehem-SEA Seattle/Tacoma Intl

9h 37m1 stop Chicago O'Hare Intl

$467American Airlines

Thu, Feb 25 - Sun, Feb 28

10:52 am - 8:51 pmSEA Seattle/Tacoma Intl-ABE Allentown-Bethlehem

6h 59m1 stop Chicago O'Hare Intl

6:00 am - 11:58 amABE Allentown-Bethlehem-SEA Seattle/Tacoma Intl

8h 58m1 stop Chicago O'Hare Intl

$529United Airlines

Tue, Feb 2 - Sat, Feb 6

10:52 am - 8:51 pmSEA Seattle/Tacoma Intl-ABE Allentown-Bethlehem

6h 59m1 stop Chicago O'Hare Intl

10:10 am - 6:12 pmABE Allentown-Bethlehem-SEA Seattle/Tacoma Intl

11h 02m2 stops Chicago O'Hare Intl Denver Intl

$534United Airlines

Tue, Feb 2 - Sat, Feb 6

8:30 am - 8:51 pmSEA Seattle/Tacoma Intl-ABE Allentown-Bethlehem

9h 21m2 stops Denver Intl Chicago O'Hare Intl

10:10 am - 9:02 pmABE Allentown-Bethlehem-SEA Seattle/Tacoma Intl

13h 52m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

$539United Airlines

Tue, Feb 2 - Sat, Feb 6

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American Airlines flights from Seattle to Allentown

Our best American Airlines deals on Seattle to Allentown flight tickets

American Airlines

Nov 11

SEA9:45 pmSeattle/Tacoma Intl

10h 28m

1 stop

ABE11:13 amAllentown-Bethlehem

Nov 14

ABE6:15 pmAllentown-Bethlehem

9h 20m

1 stop

SEA12:35 amSeattle/Tacoma Intl

$417

American Airlines

Nov 1

SEA10:43 amSeattle/Tacoma Intl

9h 16m

1 stop

ABE10:59 pmAllentown-Bethlehem

Nov 11

ABE6:15 pmAllentown-Bethlehem

9h 20m

1 stop

SEA12:35 amSeattle/Tacoma Intl

$442

American Airlines

Feb 25

SEA5:00 amSeattle/Tacoma Intl

8h 59m

1 stop

ABE4:59 pmAllentown-Bethlehem

Feb 28

ABE7:17 amAllentown-Bethlehem

9h 37m

1 stop

SEA1:54 pmSeattle/Tacoma Intl

$467

United Airlines flights from Seattle to Allentown

Our best United Airlines deals on Seattle to Allentown flight tickets

United Airlines

Oct 21

SEA11:13 pmSeattle/Tacoma Intl

7h 22m

1 stop

ABE9:35 amAllentown-Bethlehem

Oct 24

ABE10:37 amAllentown-Bethlehem

13h 38m

2 stops

SEA9:15 pmSeattle/Tacoma Intl

$480

United Airlines

Oct 21

SEA7:25 pmSeattle/Tacoma Intl

11h 10m

2 stops

ABE9:35 amAllentown-Bethlehem

Oct 24

ABE6:20 amAllentown-Bethlehem

10h 57m

2 stops

SEA2:17 pmSeattle/Tacoma Intl

$485

United Airlines

Oct 21

SEA7:25 pmSeattle/Tacoma Intl

11h 10m

2 stops

ABE9:35 amAllentown-Bethlehem

Oct 30

ABE6:15 amAllentown-Bethlehem

9h 04m

1 stop

SEA12:19 pmSeattle/Tacoma Intl

$492

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleAllentown

SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem

SEAABE

Seattle/Tacoma Intl

Sun 2/28

10:38 am-10:28 pm

1 stop8h 50m

Allentown-Bethlehem

Wed 3/10

7:17 am-1:54 pm

1 stop9h 37m

$417

SeattleAllentown

SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem

SEAABE

Seattle/Tacoma Intl

Wed 11/11

9:45 pm-11:13 am

1 stop10h 28m

Allentown-Bethlehem

Sat 11/14

6:15 pm-12:35 am

1 stop9h 20m

$417

SeattleAllentown

SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem

SEAABE

Seattle/Tacoma Intl

Wed 2/3

11:50 am-10:46 pm

1 stop7h 56m

Allentown-Bethlehem

Sun 2/7

5:40 pm-12:09 am

1 stop9h 29m

$419

SeattleAllentown

SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem

SEAABE

Seattle/Tacoma Intl

Tue 2/2

6:00 am-5:12 pm

1 stop8h 12m

Allentown-Bethlehem

Sat 2/6

5:40 pm-12:09 am

1 stop9h 29m

$419

SeattleAllentown

SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem

SEAABE

Seattle/Tacoma Intl

Wed 2/3

11:50 am-10:46 pm

1 stop7h 56m

Allentown-Bethlehem

Sat 2/6

5:40 pm-12:09 am

1 stop9h 29m

$419

SeattleAllentown

SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem

SEAABE

Seattle/Tacoma Intl

Sun 11/1

10:43 am-10:59 pm

1 stop9h 16m

Allentown-Bethlehem

Wed 11/11

6:15 pm-12:35 am

1 stop9h 20m

$442

SeattleAllentown

SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem

SEAABE

Seattle/Tacoma Intl

Thu 2/25

5:00 am-4:59 pm

1 stop8h 59m

Allentown-Bethlehem

Sun 2/28

7:17 am-1:54 pm

1 stop9h 37m

$467

Quickest round-trip

SeattleAllentown

SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem

SEAABE

Seattle/Tacoma Intl

Tue 2/2

10:52 am-8:51 pm

1 stop6h 59m

Allentown-Bethlehem

Sat 2/6

6:00 am-11:58 am

1 stop8h 58m

$529

SeattleAllentown

SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem

SEAABE

Seattle/Tacoma Intl

Tue 2/2

10:52 am-8:51 pm

1 stop6h 59m

Allentown-Bethlehem

Sat 2/6

10:10 am-6:12 pm

2 stops11h 02m

$534

SeattleAllentown

SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem

SEAABE

Seattle/Tacoma Intl

Tue 2/2

8:30 am-8:51 pm

2 stops9h 21m

Allentown-Bethlehem

Sat 2/6

10:10 am-9:02 pm

2 stops13h 52m

$539

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to Allentown

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Allentown?

The month of December is, on average, the cheapest month to fly to Allentown from Seattle, with most prices found around $394. If you aren’t able to travel to Allentown during the month of December, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $443.

When to book flights from Seattle to Allentown

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Allentown according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Allentown (SEA to ABE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Allentown

Best Price Found	$348
Fastest flight time	6h 59m
Direct flights	None

The best one-way flight to Allentown from Seattle in the past 72 hours is $348. The best round-trip flight deal from Seattle to Allentown found on momondo in the last 72 hours is $417.

The fastest flight from Seattle to Allentown takes 6h 59m

There are no direct flights from Seattle to Allentown. There are no popular flight routes from Seattle to Allentown.

Search flight deals

Frequently asked questions about flying from Seattle to Allentown

How far is Seattle/Tacoma Intl to Allentown-Bethlehem by plane?
The distance between Seattle/Tacoma Intl and Allentown-Bethlehem is about 2336.4 mi. Flights usually cover this in 6h 59m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Allentown-Bethlehem Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Allentown-Bethlehem Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Allentown-Bethlehem Airport?
As of October 2026, there are 2 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Allentown-Bethlehem Airport.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Allentown-Bethlehem Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Allentown-Bethlehem Airport.
What documentation or ID do you need to fly to Allentown-Bethlehem Airport?
The necessary travel and health documents for your Allentown-Bethlehem Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Seattle to Allentown?
Based on momondo bookings for flights between Seattle and Allentown, the leading airline is United Airlines, making up 61% of the total bookings. Other popular airlines include American Airlines with 39%.

Best airlines flying from Seattle to Allentown

Compare and see reviews for airlines that fly from Seattle to Allentown with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $292	Free Cancellation	Rating 7.4 10,362 reviews		Search United Airlines flights
American Airlines	PriceFrom $352	Free Cancellation	Rating 7.0 12,165 reviews		Search American Airlines flights

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Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Allentown?

It is quick and easy to find Seattle to Allentown flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Allentown that suits you.

Can I find flights from Seattle to Allentown with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Allentown from Seattle with this policy.

How can momondo help me find flights from Seattle to Allentown?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Allentown from Seattle.

I’m not ready to book a flight from Seattle to Allentown right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Allentown now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Allentown and let you know when they change.