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

Delta, American Airlines, and United Airlines are the most popular carriers operating from Allentown-Bethlehem to Seattle/Tacoma Intl

What airlines fly to Seattle?

Alaska Airlines, American Airlines and United Airlines are the top three most popular airlines that fly to Seattle from Allentown according to our data. Alaska Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 9 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport refresh daily.

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

As of October 2025, there are 2 operators available to choose from for flights from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$181 Cheap Flights from Allentown to Seattle in 2025/26

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Cheap round-trip flights

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5:40 pm - 12:16 amABE-SEA

9h 36m1 stop

6:00 am - 5:13 pmSEA-ABE

8h 13m1 stop

$339Delta

Find Deal

Tue, Mar 31 - Tue, Apr 7

5:22 pm - 10:45 pmABE-SEA

8h 23m1 stop

10:53 am - 9:16 pmSEA-ABE

7h 23m1 stop

$368United Airlines

Find Deal

Fri, Oct 31 - Sat, Nov 1

5:40 pm - 12:16 amABE-SEA

9h 36m1 stop

6:00 am - 5:13 pmSEA-ABE

8h 13m1 stop

$369Delta

Find Deal

Mon, Mar 30 - Tue, Apr 7

1:00 pm - 11:15 pmABE-SEA

13h 15m2 stops

10:53 am - 9:16 pmSEA-ABE

7h 23m1 stop

$373United Airlines

Find Deal

Fri, Oct 31 - Sat, Nov 1

6:00 pm - 11:59 pmABE-SEA

8h 59m1 stop

11:00 pm - 12:14 pmSEA-ABE

10h 14m1 stop

$377Delta

Find Deal

Fri, Dec 5 - Mon, Dec 8

1:00 pm - 11:15 pmABE-SEA

13h 15m2 stops

8:36 am - 9:16 pmSEA-ABE

9h 40m2 stops

$378United Airlines

Find Deal

Fri, Oct 31 - Sat, Nov 1

1:48 pm - 8:51 pmABE-SEA

10h 03m1 stop

11:55 am - 12:15 amSEA-ABE

9h 20m2 stops

$382American Airlines

Find Deal

Tue, Mar 31 - Tue, Apr 7

6:00 pm - 11:54 pmABE-SEA

8h 54m1 stop

6:00 am - 5:20 pmSEA-ABE

8h 20m1 stop

$404Delta

Find Deal

Sat, Nov 1 - Tue, Nov 4

6:32 am - 11:30 amABE-SEA

7h 58m1 stop

11:30 pm - 11:48 amSEA-ABE

9h 18m1 stop

$409United Airlines

Find Deal

Sun, Nov 23 - Fri, Nov 28

1:00 pm - 11:44 pmABE-SEA

13h 44m2 stops

11:34 pm - 11:48 amSEA-ABE

9h 14m1 stop

$422United Airlines

Find Deal

Mon, Nov 10 - Tue, Nov 18

Delta flights from Allentown to Seattle

Our best Delta deals on Allentown to Seattle flight tickets

Delta

Mar 31

ABE5:40 pmAllentown-Bethlehem

9h 36m

1 stop

SEA12:16 amSeattle/Tacoma Intl

Apr 7

SEA6:00 amSeattle/Tacoma Intl

8h 13m

1 stop

ABE5:13 pmAllentown-Bethlehem

$339

Find similar

Delta

Mar 30

ABE5:40 pmAllentown-Bethlehem

9h 36m

1 stop

SEA12:16 amSeattle/Tacoma Intl

Apr 7

SEA6:00 amSeattle/Tacoma Intl

8h 13m

1 stop

ABE5:13 pmAllentown-Bethlehem

$369

Find similar

Delta

Dec 5

ABE6:00 pmAllentown-Bethlehem

8h 59m

1 stop

SEA11:59 pmSeattle/Tacoma Intl

Dec 8

SEA11:00 pmSeattle/Tacoma Intl

10h 14m

1 stop

ABE12:14 pmAllentown-Bethlehem

$377

Find similar

United Airlines flights from Allentown to Seattle

Our best United Airlines deals on Allentown to Seattle flight tickets

United Airlines

Oct 31

ABE5:22 pmAllentown-Bethlehem

8h 23m

1 stop

SEA10:45 pmSeattle/Tacoma Intl

Nov 1

SEA10:53 amSeattle/Tacoma Intl

7h 23m

1 stop

ABE9:16 pmAllentown-Bethlehem

$368

Find similar

United Airlines

Oct 31

ABE1:00 pmAllentown-Bethlehem

13h 15m

2 stops

SEA11:15 pmSeattle/Tacoma Intl

Nov 1

SEA10:53 amSeattle/Tacoma Intl

7h 23m

1 stop

ABE9:16 pmAllentown-Bethlehem

$373

Find similar

United Airlines

Oct 31

ABE1:00 pmAllentown-Bethlehem

13h 15m

2 stops

SEA11:15 pmSeattle/Tacoma Intl

Nov 1

SEA8:36 amSeattle/Tacoma Intl

9h 40m

2 stops

ABE9:16 pmAllentown-Bethlehem

$378

Find similar

Fly from

Fly to

Route

Depart

Return

Price

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Tue 3/31

5:40 pm-12:16 am

1 stop9h 36m

Seattle/Tacoma Intl

Tue 4/7

6:00 am-5:13 pm

1 stop8h 13m

$339

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 10/31

5:22 pm-10:45 pm

1 stop8h 23m

Seattle/Tacoma Intl

Sat 11/1

10:53 am-9:16 pm

1 stop7h 23m

$368

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Mon 3/30

5:40 pm-12:16 am

1 stop9h 36m

Seattle/Tacoma Intl

Tue 4/7

6:00 am-5:13 pm

1 stop8h 13m

$369

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 10/31

1:00 pm-11:15 pm

2 stops13h 15m

Seattle/Tacoma Intl

Sat 11/1

10:53 am-9:16 pm

1 stop7h 23m

$373

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 12/5

6:00 pm-11:59 pm

1 stop8h 59m

Seattle/Tacoma Intl

Mon 12/8

11:00 pm-12:14 pm

1 stop10h 14m

$377

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 10/31

1:00 pm-11:15 pm

2 stops13h 15m

Seattle/Tacoma Intl

Sat 11/1

8:36 am-9:16 pm

2 stops9h 40m

$378

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Tue 3/31

1:48 pm-8:51 pm

1 stop10h 03m

Seattle/Tacoma Intl

Tue 4/7

11:55 am-12:15 am

2 stops9h 20m

$382

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Sat 11/1

6:00 pm-11:54 pm

1 stop8h 54m

Seattle/Tacoma Intl

Tue 11/4

6:00 am-5:20 pm

1 stop8h 20m

$404

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Sun 11/23

6:32 am-11:30 am

1 stop7h 58m

Seattle/Tacoma Intl

Fri 11/28

11:30 pm-11:48 am

1 stop9h 18m

$409

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Mon 11/10

1:00 pm-11:44 pm

2 stops13h 44m

Seattle/Tacoma Intl

Tue 11/18

11:34 pm-11:48 am

1 stop9h 14m

$422

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

How to get the cheapest flight ticket from Allentown to Seattle

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 Seattle?

In general, February is the cheapest month to fly from Allentown to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $380. If you don’t want to visit Seattle in February, then you should wait until March to fly from Allentown, when ticket prices are also cheap, with an average price of $388.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Allentown is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $469. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Allentown because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $700.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Allentown in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $535 when looking at flights departing in the afternoon. Flights to Seattle are more costly at noon, with an average ticket price of $723. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How have Allentown to Seattle flight prices changed over time?

When to book flights from Allentown to Seattle

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

Estimated round-trip price

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

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

Direct flights	None

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

Search flight deals

How far is Allentown-Bethlehem to Seattle/Tacoma Intl by plane?
The straight-line distance from Allentown-Bethlehem to Seattle/Tacoma Intl is 2336.4 mi. 7h 57m is a normal flight duration for this route.
When did momondo last update prices for flights from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport refresh daily.
How many operators does momondo search for flights from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport?
As of October 2025, there are 2 operators available to choose from for flights from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Allentown to Seattle?
Based on momondo bookings for flights between Allentown and Seattle, the leading airline is American Airlines, making up 66% of the total bookings. Other popular airlines include United Airlines with 34%.

Best airlines flying from Allentown to Seattle

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

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $289	Free Cancellation	Rating 7.2 11,024 reviews		Search American Airlines flights
United Airlines	PriceFrom $293	Free Cancellation	Rating 7.4 8,991 reviews		Search United Airlines flights

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

All flight searches from Allentown to Seattle on momondo can be filtered to show those which offer flexible booking policies.

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

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

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Allentown and alert you when they change.