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Cheap flights from Allentown to Seattle from $204

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 7/8. 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.
Delta Logo
5:58 pm - 11:57 pm
ABE
-
SEA
8h 59m
1 stop
Delta Logo
11:30 pm - 12:16 pm
SEA
-
ABE
9h 46m
1 stop
$297Delta
Mon, Mar 23 - Mon, Mar 30
United Airlines Logo
6:15 am - 11:48 am
ABE
-
SEA
8h 33m
1 stop
United Airlines Logo
7:37 pm - 9:48 am
SEA
-
ABE
11h 11m
2 stops
$332United Airlines
Wed, Apr 22 - Wed, Apr 22
United Airlines Logo
5:35 pm - 11:59 pm
ABE
-
SEA
9h 24m
1 stop
United Airlines Logo
10:40 pm - 9:38 am
SEA
-
ABE
7h 58m
1 stop
$365United Airlines
Fri, May 15 - Sat, May 23
United Airlines Logo
5:35 pm - 11:59 pm
ABE
-
SEA
9h 24m
1 stop
United Airlines Logo
5:20 pm - 9:38 am
SEA
-
ABE
13h 18m
2 stops
$370United Airlines
Fri, May 15 - Sat, May 23
United Airlines Logo
5:36 pm - 11:59 pm
ABE
-
SEA
9h 23m
1 stop
United Airlines Logo
10:40 pm - 10:06 am
SEA
-
ABE
8h 26m
1 stop
$390United Airlines
Mon, Jun 29 - Thu, Jul 9
Delta Logo
5:58 pm - 11:57 pm
ABE
-
SEA
8h 59m
1 stop
Delta Logo
11:30 pm - 12:16 pm
SEA
-
ABE
9h 46m
1 stop
$392Delta
Mon, Mar 23 - Fri, Mar 27
American Airlines Logo
1:56 pm - 7:00 pm
ABE
-
SEA
8h 04m
1 stop
American Airlines Logo
11:55 pm - 1:26 pm
SEA
-
ABE
10h 31m
1 stop
$397American Airlines
Tue, Aug 11 - Tue, Aug 18
United Airlines Logo
6:15 am - 6:35 pm
ABE
-
SEA
15h 20m
2 stops
United Airlines Logo
11:59 pm - 9:48 am
SEA
-
ABE
6h 49m
1 stop
$402United Airlines
Wed, Apr 8 - Wed, Apr 8
Delta Logo
5:58 pm - 11:57 pm
ABE
-
SEA
8h 59m
1 stop
Delta Logo
1:30 pm - 12:16 pm
SEA
-
ABE
19h 46m
2 stops
$425Delta
Mon, Mar 23 - Tue, Mar 31
United Airlines Logo
5:38 pm - 12:19 am
ABE
-
SEA
9h 41m
1 stop
United Airlines Logo
11:59 pm - 9:48 am
SEA
-
ABE
6h 49m
1 stop
$427United Airlines
Fri, Apr 24 - Mon, Apr 27

Delta flights from Allentown to Seattle

Our best Delta deals on Allentown to Seattle flight tickets
Delta
Mar 23
ABE5:58 pmAllentown-Bethlehem
8h 59m
1 stop
SEA11:57 pmSeattle/Tacoma Intl
Mar 30
SEA11:30 pmSeattle/Tacoma Intl
9h 46m
1 stop
ABE12:16 pmAllentown-Bethlehem
$297
Delta
Mar 23
ABE5:58 pmAllentown-Bethlehem
8h 59m
1 stop
SEA11:57 pmSeattle/Tacoma Intl
Mar 27
SEA11:30 pmSeattle/Tacoma Intl
9h 46m
1 stop
ABE12:16 pmAllentown-Bethlehem
$392
Delta
Mar 23
ABE5:58 pmAllentown-Bethlehem
8h 59m
1 stop
SEA11:57 pmSeattle/Tacoma Intl
Mar 31
SEA1:30 pmSeattle/Tacoma Intl
19h 46m
2 stops
ABE12:16 pmAllentown-Bethlehem
$425

United Airlines flights from Allentown to Seattle

Our best United Airlines deals on Allentown to Seattle flight tickets
United Airlines
Apr 22
ABE6:15 amAllentown-Bethlehem
8h 33m
1 stop
SEA11:48 amSeattle/Tacoma Intl
Apr 22
SEA7:37 pmSeattle/Tacoma Intl
11h 11m
2 stops
ABE9:48 amAllentown-Bethlehem
$332
United Airlines
May 15
ABE5:35 pmAllentown-Bethlehem
9h 24m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
May 23
SEA10:40 pmSeattle/Tacoma Intl
7h 58m
1 stop
ABE9:38 amAllentown-Bethlehem
$365
United Airlines
May 15
ABE5:35 pmAllentown-Bethlehem
9h 24m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
May 23
SEA5:20 pmSeattle/Tacoma Intl
13h 18m
2 stops
ABE9:38 amAllentown-Bethlehem
$370

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 February 23, 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

Mon 3/23

5:58 pm-11:57 pm

1 stop8h 59m

Seattle/Tacoma Intl

Mon 3/30

11:30 pm-12:16 pm

1 stop9h 46m

$297

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Wed 4/22

6:15 am-11:48 am

1 stop8h 33m

Seattle/Tacoma Intl

Wed 4/22

7:37 pm-9:48 am

2 stops11h 11m

$332

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 5/15

5:35 pm-11:59 pm

1 stop9h 24m

Seattle/Tacoma Intl

Sat 5/23

10:40 pm-9:38 am

1 stop7h 58m

$365

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 5/15

5:35 pm-11:59 pm

1 stop9h 24m

Seattle/Tacoma Intl

Sat 5/23

5:20 pm-9:38 am

2 stops13h 18m

$370

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Mon 6/29

5:36 pm-11:59 pm

1 stop9h 23m

Seattle/Tacoma Intl

Thu 7/9

10:40 pm-10:06 am

1 stop8h 26m

$390

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Mon 3/23

5:58 pm-11:57 pm

1 stop8h 59m

Seattle/Tacoma Intl

Fri 3/27

11:30 pm-12:16 pm

1 stop9h 46m

$392

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Tue 8/11

1:56 pm-7:00 pm

1 stop8h 04m

Seattle/Tacoma Intl

Tue 8/18

11:55 pm-1:26 pm

1 stop10h 31m

$397

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Wed 4/8

6:15 am-6:35 pm

2 stops15h 20m

Seattle/Tacoma Intl

Wed 4/8

11:59 pm-9:48 am

1 stop6h 49m

$402

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Mon 3/23

5:58 pm-11:57 pm

1 stop8h 59m

Seattle/Tacoma Intl

Tue 3/31

1:30 pm-12:16 pm

2 stops19h 46m

$425

AllentownSeattle

ABE - SEA

ABESEA

Allentown-Bethlehem

Fri 4/24

5:38 pm-12:19 am

1 stop9h 41m

Seattle/Tacoma Intl

Mon 4/27

11:59 pm-9:48 am

1 stop6h 49m

$427

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 $356.

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 $451. 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 $528.

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 $372 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $572. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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 04m

Direct flights

None
The fastest flight from Allentown to Seattle takes 8h 04m
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 04m 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
American AirlinesPriceFrom $289Free CancellationRating
7.2
11,339 reviews
Search American Airlines flights
United AirlinesPriceFrom $293Free CancellationRating
7.4
9,342 reviews
Search United 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
Redmond
Puyallup
Cle Elum
Lakewood
Tukwila
Federal Way
Fife
Westport
Kirkland
Centralia
Tumwater

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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