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Cheap flights from Allentown to Seattle from $149

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 2/28. 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.
American Airlines Logo
1:02 pm - 8:45 pm
ABE
-
SEA
10h 43m1 stop
American Airlines Logo
11:12 pm - 12:32 pm
SEA
-
ABE
10h 20m2 stops
$262American Airlines
Wed, Feb 4 - Sun, Feb 8
American Airlines Logo
1:02 pm - 9:47 pm
ABE
-
SEA
11h 45m2 stops
American Airlines Logo
11:12 pm - 12:32 pm
SEA
-
ABE
10h 20m2 stops
$328American Airlines
Wed, Feb 4 - Sun, Feb 8
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
$357United Airlines
Tue, May 5 - Tue, May 12
United Airlines Logo
10:35 am - 3:53 pm
ABE
-
SEA
8h 18m1 stop
United Airlines Logo
5:45 pm - 10:21 am
SEA
-
ABE
13h 36m2 stops
$362United Airlines
Tue, May 5 - Tue, May 12
United Airlines Logo
10:35 am - 11:29 pm
ABE
-
SEA
15h 54m2 stops
United Airlines Logo
5:45 pm - 10:21 am
SEA
-
ABE
13h 36m2 stops
$368United Airlines
Tue, May 5 - Tue, May 12
United Airlines Logo
6:15 am - 11:32 am
ABE
-
SEA
8h 17m1 stop
United Airlines Logo
5:00 am - 9:05 pm
SEA
-
ABE
13h 05m2 stops
$394United Airlines
Tue, Jan 20 - Sat, Jan 24
United Airlines Logo
11:30 am - 9:12 pm
ABE
-
SEA
12h 42m2 stops
United Airlines Logo
5:10 pm - 10:41 am
SEA
-
ABE
14h 31m2 stops
$400United Airlines
Fri, Jan 23 - Tue, Jan 27
United Airlines Logo
10:35 am - 11:29 pm
ABE
-
SEA
15h 54m2 stops
United Airlines Logo
7:37 pm - 10:21 am
SEA
-
ABE
11h 44m2 stops
$418United 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
$423United Airlines
Tue, May 5 - Tue, May 12
United Airlines Logo
11:30 am - 6:14 pm
ABE
-
SEA
9h 44m1 stop
United Airlines Logo
7:32 pm - 10:41 am
SEA
-
ABE
12h 09m2 stops
$428United Airlines
Sat, Jan 24 - Wed, Jan 28

United Airlines flights from Allentown to Seattle

Our best United Airlines deals on Allentown to Seattle flight tickets
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
$357
United Airlines
May 5
ABE10:35 amAllentown-Bethlehem
8h 18m
1 stop
SEA3:53 pmSeattle/Tacoma Intl
May 12
SEA5:45 pmSeattle/Tacoma Intl
13h 36m
2 stops
ABE10:21 amAllentown-Bethlehem
$362
United Airlines
May 5
ABE10:35 amAllentown-Bethlehem
15h 54m
2 stops
SEA11:29 pmSeattle/Tacoma Intl
May 12
SEA5:45 pmSeattle/Tacoma Intl
13h 36m
2 stops
ABE10:21 amAllentown-Bethlehem
$368

Delta flights from Allentown to Seattle

Our best Delta deals on Allentown to Seattle flight tickets
Delta
Jan 13
ABE6:28 amAllentown-Bethlehem
8h 52m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
Jan 20
SEA6:15 amSeattle/Tacoma Intl
7h 59m
1 stop
ABE5:14 pmAllentown-Bethlehem
$529
Delta
Apr 6
ABE5:59 pmAllentown-Bethlehem
8h 55m
1 stop
SEA11:54 pmSeattle/Tacoma Intl
Apr 11
SEA6:15 amSeattle/Tacoma Intl
8h 02m
1 stop
ABE5:17 pmAllentown-Bethlehem
$559
Delta
Jan 15
ABE6:28 amAllentown-Bethlehem
8h 52m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
Jan 20
SEA10:59 pmSeattle/Tacoma Intl
10h 06m
1 stop
ABE12:05 pmAllentown-Bethlehem
$588

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 January 8, 2026.
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

Wed 2/4

1:02 pm-8:45 pm

1 stop10h 43m

Seattle/Tacoma Intl

Sun 2/8

11:12 pm-12:32 pm

2 stops10h 20m

$262

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Wed 2/4

1:02 pm-9:47 pm

2 stops11h 45m

Seattle/Tacoma Intl

Sun 2/8

11:12 pm-12:32 pm

2 stops10h 20m

$328

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

$357

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Tue 5/5

10:35 am-3:53 pm

1 stop8h 18m

Seattle/Tacoma Intl

Tue 5/12

5:45 pm-10:21 am

2 stops13h 36m

$362

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Tue 5/5

10:35 am-11:29 pm

2 stops15h 54m

Seattle/Tacoma Intl

Tue 5/12

5:45 pm-10:21 am

2 stops13h 36m

$368

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Tue 1/20

6:15 am-11:32 am

1 stop8h 17m

Seattle/Tacoma Intl

Sat 1/24

5:00 am-9:05 pm

2 stops13h 05m

$394

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 1/23

11:30 am-9:12 pm

2 stops12h 42m

Seattle/Tacoma Intl

Tue 1/27

5:10 pm-10:41 am

2 stops14h 31m

$400

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Tue 5/5

10:35 am-11:29 pm

2 stops15h 54m

Seattle/Tacoma Intl

Tue 5/12

7:37 pm-10:21 am

2 stops11h 44m

$418

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

$423

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Sat 1/24

11:30 am-6:14 pm

1 stop9h 44m

Seattle/Tacoma Intl

Wed 1/28

7:32 pm-10:41 am

2 stops12h 09m

$428

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 March to fly from Allentown, when ticket prices are also cheap, with an average price of $388.

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
9,139 reviews
Search United Airlines flights
American AirlinesPriceFrom $298Free CancellationRating
7.2
11,095 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
Federal Way
Cle Elum
Lakewood
Fife
Westport
Kirkland
Centralia
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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