$215+ Cheap flights from Seattle to Allentown (SEA - ABE)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ABE
Oct 18 — Oct 251
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Seattle to Allentown with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Allentown
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to AllentownExplore the most affordable flight options available from Seattle to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
Explore the most affordable flight options available from Seattle to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:00 am -
1 stop8h 16m
Wed 11/116:00 pm -
1 stop8h 57m
Deal found 9/16![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:25 pm -
2 stops11h 10m
Tue 10/275:36 pm -
1 stop9h 23m
Deal found 9/17![United Airlines logo]()
$404
This American Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:12 am -
1 stop9h 05m
Mon 11/26:15 pm -
1 stop9h 20m
Deal found 9/18![American Airlines logo]()
$428
This American Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:43 am -
1 stop9h 16m
Mon 11/166:15 pm -
1 stop9h 20m
Deal found 9/17![American Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 am -
1 stop8h 19m
Wed 10/146:03 pm -
1 stop8h 49m
Deal found 9/17![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:59 am -
1 stop10h 17m
Tue 9/226:08 pm -
1 stop8h 50m
Deal found 9/17![Delta logo]()
$455
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 am -
1 stop8h 19m
Mon 10/56:04 pm -
1 stop8h 55m
Deal found 9/17![Delta logo]()
$479
This American Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:16 am -
1 stop10h 03m
Wed 11/117:36 am -
2 stops12h 18m
Deal found 9/16![American Airlines logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:27 pm -
2 stops27h 01m
Mon 10/56:30 am -
1 stop11h 38m
Deal found 9/17![Multiple Airlines logo]()
$503
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:59 am -
1 stop10h 17m
Fri 9/256:04 pm -
1 stop8h 54m
Deal found 9/17![Delta logo]()
$517
Best flights from Seattle to AllentownDiscover carefully curated flight deals from Seattle to Allentown that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
Discover carefully curated flight deals from Seattle to Allentown that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/26:00 am -
1 stop8h 12m
Wed 2/105:40 pm -
1 stop9h 29m
Deal found 9/18![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/210:54 am -
1 stop7h 01m
Sat 2/66:10 am -
1 stop8h 20m
Deal found 9/13![United Airlines logo]()
$509
Last-minute flights from Seattle to AllentownDiscover last-minute flight deals from Seattle to Allentown. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Allentown. Data last updated September 18, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:59 am -
1 stop10h 17m
Wed 9/236:08 pm -
1 stop8h 50m
Deal found 9/17![Delta logo]()
$455
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:59 am -
1 stop10h 17m
Fri 9/256:04 pm -
1 stop8h 54m
Deal found 9/17![Delta logo]()
$517
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:59 am -
1 stop10h 17m
Mon 9/216:04 pm -
1 stop8h 54m
Deal found 9/17![Delta logo]()
$518
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:25 pm -
1 stop7h 57m
Sat 9/265:10 pm -
1 stop10h 01m
Deal found 9/14![American Airlines logo]()
$538
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:35 am -
1 stop7h 41m
Tue 10/66:03 pm -
1 stop8h 49m
Deal found 9/17![Delta logo]()
$537
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 am -
1 stop8h 19m
Wed 10/146:03 pm -
1 stop8h 49m
Deal found 9/17![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 am -
1 stop8h 19m
Mon 10/56:04 pm -
1 stop8h 55m
Deal found 9/17![Delta logo]()
$479
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:27 pm -
2 stops27h 01m
Mon 10/56:30 am -
1 stop11h 38m
Deal found 9/17![Multiple Airlines logo]()
$503
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:35 pm -
1 stop10h 30m
Tue 10/276:03 pm -
1 stop8h 49m
Deal found 9/17![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:25 pm -
2 stops11h 10m
Tue 10/275:36 pm -
1 stop9h 23m
Deal found 9/17![United Airlines logo]()
$404
This American Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:12 am -
1 stop9h 05m
Mon 11/26:15 pm -
1 stop9h 20m
Deal found 9/18![American Airlines logo]()
$428
One-way flights from Seattle to AllentownSearch for one-way flight options from Seattle to Allentown. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
Search for one-way flight options from Seattle to Allentown. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:45 am -
1 stop7h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Delta logo]()
$215
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:00 am -
1 stop8h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Delta logo]()
$239
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/318:00 am -
1 stop10h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Delta logo]()
$240
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:30 am -
2 stops9h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![United Airlines logo]()
$275
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:40 am -
1 stop8h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![American Airlines logo]()
$295
This KAYAK deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1610:35 pm -
1 stop10h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Delta logo]()
$297
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2511:35 am -
1 stop7h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Delta logo]()
$338
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:35 pm -
2 stops13h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![United Airlines logo]()
$340
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2110:47 am -
1 stop10h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![American Airlines logo]()
$344
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/276:00 am -
1 stop8h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Delta logo]()
$348
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2210:47 am -
1 stop10h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![American Airlines logo]()
$387
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2311:45 am -
1 stop7h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Delta logo]()
$390
Find flight deals from Seattle to Allentown
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Allentown (ABE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $399 (Delta) |
One-way from | $215 (Delta) |
Popular in | July |
Cheapest in | December |
Average price | $590 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Allentown 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, Cheapflights users made 7,457,451 searches. Data last updated September 18, 2026.
Use the filters below to find and compare flights from Seattle to Allentown that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
SeattleAllentown
SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem
SEAABE
Seattle/Tacoma Intl
Sat 10/31
11:45 am-10:19 pm
1 stop7h 34m
Allentown-Bethlehem
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$215
SeattleAllentown
SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem
SEAABE
Seattle/Tacoma Intl
Sun 11/1
6:00 am-5:16 pm
1 stop8h 16m
Allentown-Bethlehem
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$239
SeattleAllentown
SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem
SEAABE
Seattle/Tacoma Intl
Thu 12/31
8:00 am-9:22 pm
1 stop10h 22m
Allentown-Bethlehem
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$240
SeattleAllentown
SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem
SEAABE
Seattle/Tacoma Intl
Thu 12/3
7:30 pm-9:28 am
2 stops10h 58m
Allentown-Bethlehem
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$275
SeattleAllentown
SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem
SEAABE
Seattle/Tacoma Intl
Sat 10/31
8:30 am-9:02 pm
2 stops9h 32m
Allentown-Bethlehem
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$275
SeattleAllentown
SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem
SEAABE
Seattle/Tacoma Intl
Tue 12/1
5:35 pm-9:51 am
2 stops13h 16m
Allentown-Bethlehem
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$340
SeattleAllentown
SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem
SEAABE
Seattle/Tacoma Intl
Mon 12/21
10:47 am-11:52 pm
1 stop10h 05m
Allentown-Bethlehem
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$344
SeattleAllentown
SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem
SEAABE
Seattle/Tacoma Intl
Sun 9/27
6:00 am-5:19 pm
1 stop8h 19m
Allentown-Bethlehem
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$348
SeattleAllentown
SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem
SEAABE
Seattle/Tacoma Intl
Fri 10/23
11:45 am-10:19 pm
1 stop7h 34m
Allentown-Bethlehem
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$390
SeattleAllentown
SEA Seattle/Tacoma Intl - ABE Allentown-Bethlehem
SEAABE
Seattle/Tacoma Intl
Fri 9/25
5:21 pm-9:35 am
2 stops13h 14m
Allentown-Bethlehem
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$398
Showing 1-10 of 14 resultsSorted by cheapest first
Compare providers for flights from Seattle to Allentown
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Allentown in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Allentown flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Allentown flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Allentown flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Allentown flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Allentown flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Allentown
Have a flexible travel schedule? Discover the best time to fly to Allentown from Seattle with our price prediction graph.
SEA-ABE
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Allentown
What is the cheapest month to book a flight from Seattle to Allentown?
Currently, December is the cheapest month in which you can book a flight from Seattle to Allentown (average of $394). Flying from Seattle to Allentown in July is currently the most expensive (average of $889). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Seattle to Allentown?
Airfare is below average for this route at the moment.
Seattle to Allentown flights typically cost between $526 and $858 in November.The cheapest round-trip price found within the last 5 days was $399 on Delta (Nov 1-Nov 11).
Reviews of airlines servicing Allentown
Get insights into the airlines that provide service to Allentown. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Allentown. Reviews last updated September 18, 2026.
Read reviews from past customers who have flown United Airlines and American Airlines from Seattle to Allentown. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Related info for your journey
Find useful and relevant information for your journey from Seattle to Allentown. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Allentown flight routes
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Seattle
Popular flights
Other flights to Allentown
Explore flights to Allentown departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Alternative routes for Seattle to Allentown
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Allentown by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Allentown by cabin class
Find flights from Seattle to Allentown, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Allentown flights
Browse other Seattle and Allentown flight options. Last updated on September 18, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Seattle to Allentown
Discover the top 2 airlines that operate flights from Seattle to Allentown. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$292 | Average$443 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$352 | Average$526 | FlexibilityNo cancel fee | On-time71% |