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Cheap flights from Allentown to Seattle from $128

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Allentown to Seattle departing on 1/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Allentown to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:57 pm - 10:43 pm
ABE
-
SEA
8h 46m1 stop
United Airlines Logo
10:58 am - 9:05 pm
SEA
-
ABE
7h 07m1 stop
$357United Airlines
Fri, Jan 30 - Tue, Feb 3
United Airlines Logo
6:15 am - 11:32 am
ABE
-
SEA
8h 17m1 stop
United Airlines Logo
8:40 am - 9:05 pm
SEA
-
ABE
9h 25m2 stops
$362United Airlines
Fri, Jan 30 - Tue, Feb 3
American Airlines Logo
6:04 am - 12:51 pm
ABE
-
SEA
9h 47m1 stop
American Airlines Logo
1:44 pm - 12:29 am
SEA
-
ABE
7h 45m1 stop
$386American Airlines
Wed, Mar 25 - Mon, Mar 30
United Airlines Logo
10:35 am - 3:53 pm
ABE
-
SEA
8h 18m1 stop
United Airlines Logo
11:50 pm - 10:21 am
SEA
-
ABE
7h 31m1 stop
$397United Airlines
Tue, May 5 - Tue, May 12
United Airlines Logo
10:35 am - 9:12 pm
ABE
-
SEA
13h 37m2 stops
United Airlines Logo
11:50 pm - 10:21 am
SEA
-
ABE
7h 31m1 stop
$402United Airlines
Tue, May 5 - Tue, May 12
United Airlines Logo
10:35 am - 11:29 pm
ABE
-
SEA
15h 54m3 stops
United Airlines Logo
11:50 pm - 10:21 am
SEA
-
ABE
7h 31m1 stop
$407United Airlines
Tue, May 5 - Tue, May 12
United Airlines Logo
10:35 am - 11:29 pm
ABE
-
SEA
15h 54m3 stops
United Airlines Logo
5:45 pm - 10:21 am
SEA
-
ABE
13h 36m2 stops
$412United Airlines
Tue, May 5 - Tue, May 12
United Airlines Logo
11:30 am - 12:59 am
ABE
-
SEA
16h 29m2 stops
United Airlines Logo
8:40 am - 9:05 pm
SEA
-
ABE
9h 25m2 stops
$427United Airlines
Fri, Jan 30 - Tue, Feb 3
American Airlines Logo
12:00 pm - 9:16 pm
ABE
-
SEA
12h 16m2 stops
American Airlines Logo
1:44 pm - 12:29 am
SEA
-
ABE
7h 45m1 stop
$452American Airlines
Wed, Mar 25 - Mon, Mar 30
United Airlines Logo
4:57 pm - 6:26 pm
ABE
-
SEA
28h 29m2 stops
United Airlines Logo
8:40 am - 9:05 pm
SEA
-
ABE
9h 25m2 stops
$456United Airlines
Fri, Jan 30 - Tue, Feb 3

American Airlines flights from Allentown to Seattle

Our best American Airlines deals on Allentown to Seattle flight tickets
American Airlines
Mar 25
ABE6:04 amAllentown-Bethlehem
9h 47m
1 stop
SEA12:51 pmSeattle/Tacoma Intl
Mar 30
SEA1:44 pmSeattle/Tacoma Intl
7h 45m
1 stop
ABE12:29 amAllentown-Bethlehem
$386
Find similar
American Airlines
Mar 25
ABE12:00 pmAllentown-Bethlehem
12h 16m
2 stops
SEA9:16 pmSeattle/Tacoma Intl
Mar 30
SEA1:44 pmSeattle/Tacoma Intl
7h 45m
1 stop
ABE12:29 amAllentown-Bethlehem
$452
Find similar
American Airlines
Jan 6
ABE1:02 pmAllentown-Bethlehem
9h 02m
1 stop
SEA7:04 pmSeattle/Tacoma Intl
Jan 10
SEA7:00 amSeattle/Tacoma Intl
12h 26m
2 stops
ABE10:26 pmAllentown-Bethlehem
$602
Find similar

United Airlines flights from Allentown to Seattle

Our best United Airlines deals on Allentown to Seattle flight tickets
United Airlines
Jan 30
ABE4:57 pmAllentown-Bethlehem
8h 46m
1 stop
SEA10:43 pmSeattle/Tacoma Intl
Feb 3
SEA10:58 amSeattle/Tacoma Intl
7h 07m
1 stop
ABE9:05 pmAllentown-Bethlehem
$357
Find similar
United Airlines
Jan 30
ABE6:15 amAllentown-Bethlehem
8h 17m
1 stop
SEA11:32 amSeattle/Tacoma Intl
Feb 3
SEA8:40 amSeattle/Tacoma Intl
9h 25m
2 stops
ABE9:05 pmAllentown-Bethlehem
$362
Find similar
United Airlines
May 5
ABE10:35 amAllentown-Bethlehem
8h 18m
1 stop
SEA3:53 pmSeattle/Tacoma Intl
May 12
SEA11:50 pmSeattle/Tacoma Intl
7h 31m
1 stop
ABE10:21 amAllentown-Bethlehem
$397
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from Allentown to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 1/30

4:57 pm-10:43 pm

1 stop8h 46m

Seattle/Tacoma Intl

Tue 2/3

10:58 am-9:05 pm

1 stop7h 07m

$357

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 1/30

6:15 am-11:32 am

1 stop8h 17m

Seattle/Tacoma Intl

Tue 2/3

8:40 am-9:05 pm

2 stops9h 25m

$362

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Wed 3/25

6:04 am-12:51 pm

1 stop9h 47m

Seattle/Tacoma Intl

Mon 3/30

1:44 pm-12:29 am

1 stop7h 45m

$386

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Tue 5/5

10:35 am-3:53 pm

1 stop8h 18m

Seattle/Tacoma Intl

Tue 5/12

11:50 pm-10:21 am

1 stop7h 31m

$397

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Tue 5/5

10:35 am-9:12 pm

2 stops13h 37m

Seattle/Tacoma Intl

Tue 5/12

11:50 pm-10:21 am

1 stop7h 31m

$402

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Tue 5/5

10:35 am-11:29 pm

3 stops15h 54m

Seattle/Tacoma Intl

Tue 5/12

11:50 pm-10:21 am

1 stop7h 31m

$407

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Tue 5/5

10:35 am-11:29 pm

3 stops15h 54m

Seattle/Tacoma Intl

Tue 5/12

5:45 pm-10:21 am

2 stops13h 36m

$412

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 1/30

11:30 am-12:59 am

2 stops16h 29m

Seattle/Tacoma Intl

Tue 2/3

8:40 am-9:05 pm

2 stops9h 25m

$427

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Wed 3/25

12:00 pm-9:16 pm

2 stops12h 16m

Seattle/Tacoma Intl

Mon 3/30

1:44 pm-12:29 am

1 stop7h 45m

$452

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 1/30

4:57 pm-6:26 pm

2 stops28h 29m

Seattle/Tacoma Intl

Tue 2/3

8:40 am-9:05 pm

2 stops9h 25m

$456

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

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

What is the cheapest month to fly to Seattle?

In general, October 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 $294. If you don’t want to visit Seattle in October, then you should wait until February to fly from Allentown, when ticket prices are also cheap, with an average price of $380.

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 $463. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday 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 $547.

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

Flying to Seattle from Allentown in the evening is the least expensive time of day to depart. momondo users have found prices as low as $381 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $575. 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

Fastest flight time

8h 17m

Direct flights

None
The fastest flight from Allentown to Seattle takes 8h 17m
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 17m 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?

  • 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?

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 AirlinesPriceFrom $293Free CancellationRating
7.4
9,105 reviews
Search United Airlines flights
American AirlinesPriceFrom $298Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights

Traveling to a place near Seattle?

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

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.

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