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

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

What airlines fly to Seattle?

Alaska Airlines, United Airlines and American 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 38% 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 September 2025, there are 3 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

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Allentown to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

6:00 pm - 11:54 pmABE-SEA

8h 54m1 stop

11:40 am - 10:15 pmSEA-ABE

7h 35m1 stop

$309Delta

Find Deal

sáb., nov. 1 - mar., nov. 4

5:53 pm - 10:56 pmABE-SEA

8h 03m1 stop

7:44 am - 9:40 pmSEA-ABE

10h 56m2 stops

$314American Airlines

Find Deal

sáb., oct. 25 - mié., oct. 29

1:56 pm - 9:48 pmABE-SEA

10h 52m2 stops

7:44 am - 9:40 pmSEA-ABE

10h 56m2 stops

$319American Airlines

Find Deal

sáb., oct. 25 - mié., oct. 29

6:00 pm - 11:54 pmABE-SEA

8h 54m1 stop

11:40 am - 10:15 pmSEA-ABE

7h 35m1 stop

$339Delta

Find Deal

sáb., nov. 1 - mar., nov. 4

6:00 pm - 11:54 pmABE-SEA

8h 54m1 stop

11:35 am - 12:06 pmSEA-ABE

21h 31m2 stops

$377Delta

Find Deal

sáb., nov. 1 - mar., nov. 4

6:00 pm - 11:54 pmABE-SEA

8h 54m1 stop

11:40 am - 10:15 pmSEA-ABE

7h 35m1 stop

$383Delta

Find Deal

sáb., oct. 25 - mié., oct. 29

1:46 pm - 8:39 pmABE-SEA

9h 53m1 stop

5:48 am - 4:37 pmSEA-ABE

7h 49m1 stop

$397American Airlines

Find Deal

mar., nov. 11 - jue., nov. 13

5:28 pm - 10:30 pmABE-SEA

8h 02m1 stop

7:37 pm - 10:38 amSEA-ABE

12h 01m2 stops

$444United Airlines

Find Deal

mar., oct. 7 - sáb., oct. 11

5:28 pm - 10:30 pmABE-SEA

8h 02m1 stop

11:40 pm - 10:38 amSEA-ABE

7h 58m1 stop

$458United Airlines

Find Deal

mar., oct. 14 - mar., oct. 21

5:28 pm - 10:30 pmABE-SEA

8h 02m1 stop

5:31 pm - 10:38 amSEA-ABE

14h 07m2 stops

$464United Airlines

Find Deal

mar., oct. 14 - mar., oct. 21

Delta flights from Allentown to Seattle

Our best Delta deals on Allentown to Seattle flight tickets

Delta

Nov 1

ABE6:00 pmAllentown-Bethlehem

8h 54m

1 stop

SEA11:54 pmSeattle/Tacoma Intl

Nov 4

SEA11:40 amSeattle/Tacoma Intl

7h 35m

1 stop

ABE10:15 pmAllentown-Bethlehem

$309

Find similar

Delta

Nov 1

ABE6:00 pmAllentown-Bethlehem

8h 54m

1 stop

SEA11:54 pmSeattle/Tacoma Intl

Nov 4

SEA11:40 amSeattle/Tacoma Intl

7h 35m

1 stop

ABE10:15 pmAllentown-Bethlehem

$339

Find similar

Delta

Nov 1

ABE6:00 pmAllentown-Bethlehem

8h 54m

1 stop

SEA11:54 pmSeattle/Tacoma Intl

Nov 4

SEA11:35 amSeattle/Tacoma Intl

21h 31m

2 stops

ABE12:06 pmAllentown-Bethlehem

$377

Find similar

American Airlines flights from Allentown to Seattle

Our best American Airlines deals on Allentown to Seattle flight tickets

American Airlines

Oct 25

ABE5:53 pmAllentown-Bethlehem

8h 03m

1 stop

SEA10:56 pmSeattle/Tacoma Intl

Oct 29

SEA7:44 amSeattle/Tacoma Intl

10h 56m

2 stops

ABE9:40 pmAllentown-Bethlehem

$314

Find similar

American Airlines

Oct 25

ABE1:56 pmAllentown-Bethlehem

10h 52m

2 stops

SEA9:48 pmSeattle/Tacoma Intl

Oct 29

SEA7:44 amSeattle/Tacoma Intl

10h 56m

2 stops

ABE9:40 pmAllentown-Bethlehem

$319

Find similar

American Airlines

Nov 11

ABE1:46 pmAllentown-Bethlehem

9h 53m

1 stop

SEA8:39 pmSeattle/Tacoma Intl

Nov 13

SEA5:48 amSeattle/Tacoma Intl

7h 49m

1 stop

ABE4:37 pmAllentown-Bethlehem

$397

Find similar

Fly from

Fly to

Route

Depart

Return

Price

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

sáb. 11/1

6:00 pm-11:54 pm

1 stop8h 54m

Seattle/Tacoma Intl

mar. 11/4

11:40 am-10:15 pm

1 stop7h 35m

$309

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

sáb. 10/25

5:53 pm-10:56 pm

1 stop8h 03m

Seattle/Tacoma Intl

mié. 10/29

7:44 am-9:40 pm

2 stops10h 56m

$314

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

sáb. 10/25

1:56 pm-9:48 pm

2 stops10h 52m

Seattle/Tacoma Intl

mié. 10/29

7:44 am-9:40 pm

2 stops10h 56m

$319

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

sáb. 11/1

6:00 pm-11:54 pm

1 stop8h 54m

Seattle/Tacoma Intl

mar. 11/4

11:40 am-10:15 pm

1 stop7h 35m

$339

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

sáb. 11/1

6:00 pm-11:54 pm

1 stop8h 54m

Seattle/Tacoma Intl

mar. 11/4

11:35 am-12:06 pm

2 stops21h 31m

$377

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

sáb. 10/25

6:00 pm-11:54 pm

1 stop8h 54m

Seattle/Tacoma Intl

mié. 10/29

11:40 am-10:15 pm

1 stop7h 35m

$383

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

mar. 11/11

1:46 pm-8:39 pm

1 stop9h 53m

Seattle/Tacoma Intl

jue. 11/13

5:48 am-4:37 pm

1 stop7h 49m

$397

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

mar. 10/7

5:28 pm-10:30 pm

1 stop8h 02m

Seattle/Tacoma Intl

sáb. 10/11

7:37 pm-10:38 am

2 stops12h 01m

$444

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

mar. 10/14

5:28 pm-10:30 pm

1 stop8h 02m

Seattle/Tacoma Intl

mar. 10/21

11:40 pm-10:38 am

1 stop7h 58m

$458

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

mar. 10/14

5:28 pm-10:30 pm

1 stop8h 02m

Seattle/Tacoma Intl

mar. 10/21

5:31 pm-10:38 am

2 stops14h 07m

$464

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 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. 8h 01m 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 September 2025, there are 3 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 61% of the total bookings. Other popular airlines include United Airlines with 32% and Delta with 7%.

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
United Airlines	PriceFrom $293	Free Cancellation	Rating 7.4 8,924 reviews	Search United Airlines flights
American Airlines	PriceFrom $308	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $386	Free Cancellation	Rating 7.9 7,957 reviews	Search Delta flights

Leavenworth

Tacoma

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Marysville

Puyallup

Federal Way

Kirkland

Tukwila

Shoreline

Lakewood

Centralia

Fife

Cle Elum

Redmond

Westport

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Allentown to Seattle. momondo saves you time and could save you money on your trip.

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?

Once you have performed a search for Allentown to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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.