$354+ Cheap flights from Seattle to Lancaster, PA (SEA - LNS)
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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LNS
Oct 16 — Oct 231
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Lancaster 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 Lancaster
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Cheapest flights from Seattle to LancasterExplore the most affordable flight options available from Seattle to Lancaster. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2026.
Explore the most affordable flight options available from Seattle to Lancaster. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2026.
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.
Sat 10/312:30 pm -
1 stop6h 56m
Thu 11/56:05 am -
1 stop9h 14m
Deal found 9/14![United Airlines logo]()
$394
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.
Thu 10/11:56 pm -
1 stop7h 35m
Sat 10/316:05 am -
1 stop9h 14m
Deal found 9/14![United Airlines logo]()
$456
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 9/291:56 pm -
1 stop7h 35m
Sat 10/39:06 am -
1 stop9h 46m
Deal found 9/14![United Airlines logo]()
$474
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/317:00 am -
1 stop9h 56m
Sun 1/102:57 pm -
1 stop10h 42m
Deal found 9/15![United Airlines logo]()
$504
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/317:00 am -
1 stop9h 56m
Sat 1/99:05 am -
2 stops14h 05m
Deal found 9/15![United Airlines logo]()
$510
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/315:00 am -
2 stops11h 56m
Fri 1/82:57 pm -
1 stop10h 42m
Deal found 9/15![United Airlines logo]()
$514
Best flights from Seattle to LancasterDiscover carefully curated flight deals from Seattle to Lancaster that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 16, 2026.
Discover carefully curated flight deals from Seattle to Lancaster that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 16, 2026.
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.
Sat 10/312:30 pm -
1 stop6h 56m
Thu 11/56:05 am -
1 stop9h 14m
Deal found 9/14![United Airlines logo]()
$394
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 9/291:56 pm -
1 stop7h 35m
Sat 10/39:06 am -
2 stops15h 09m
Deal found 9/14![United Airlines logo]()
$480
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/317:00 am -
1 stop9h 56m
Fri 1/82:57 pm -
1 stop10h 42m
Deal found 9/15![United Airlines logo]()
$504
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/17:00 am -
1 stop9h 56m
Sat 1/99:05 am -
2 stops14h 05m
Deal found 9/15![United Airlines logo]()
$510
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.
Mon 11/22:30 pm -
1 stop6h 56m
Fri 11/68:07 pm -
1 stop22h 25m
Deal found 9/16![United Airlines logo]()
$602
Last-minute flights from Seattle to LancasterDiscover last-minute flight deals from Seattle to Lancaster. Data last updated September 16, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Lancaster. Data last updated September 16, 2026 and is based on user searches.
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 9/291:56 pm -
1 stop7h 35m
Sat 10/39:06 am -
1 stop9h 46m
Deal found 9/14![United Airlines logo]()
$474
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.
Thu 10/11:56 pm -
1 stop7h 35m
Sat 10/316:05 am -
1 stop9h 14m
Deal found 9/14![United Airlines logo]()
$456
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.
Thu 10/110:44 am -
2 stops10h 47m
Mon 10/53:11 pm -
2 stops10h 48m
Deal found 9/16![United Airlines logo]()
$555
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.
Mon 10/2610:56 pm -
1 stop22h 30m
Thu 10/298:07 pm -
1 stop22h 25m
Deal found 9/16![United Airlines logo]()
$696
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.
Sat 10/312:30 pm -
1 stop6h 56m
Thu 11/56:05 am -
1 stop9h 14m
Deal found 9/14![United Airlines logo]()
$394
One-way flights from Seattle to LancasterSearch for one-way flight options from Seattle to Lancaster. Find affordable one-way fares based on user searches. Data last updated September 16, 2026.
Search for one-way flight options from Seattle to Lancaster. Find affordable one-way fares based on user searches. Data last updated September 16, 2026.
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.
Wed 12/27:00 am -
1 stop28h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![United Airlines logo]()
$354
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 12/17:00 am -
1 stop28h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![United Airlines logo]()
$375
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.
Mon 12/2111:44 pm -
1 stop17h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$402
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.
Wed 12/301:02 pm -
2 stops27h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$407
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 12/225:34 pm -
2 stops17h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$412
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.
Sun 12/207:00 am -
1 stop9h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![United Airlines logo]()
$435
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.
Sat 12/1911:44 pm -
1 stop11h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$438
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.
Wed 12/235:00 am -
2 stops35h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![United Airlines logo]()
$440
Find flight deals from Seattle to Lancaster
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Lancaster (LNS). 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 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $394 (United Airlines) |
One-way from | $354 (United Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Lancaster 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 16, 2026.
Use the filters below to find and compare flights from Seattle to Lancaster that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleLancaster
SEA Seattle/Tacoma Intl - LNS Lancaster
SEALNS
Seattle/Tacoma Intl
Tue 12/1
7:00 am-2:11 pm
1 stop28h 11m
Lancaster
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$375
SeattleLancaster
SEA Seattle/Tacoma Intl - LNS Lancaster
SEALNS
Seattle/Tacoma Intl
Thu 12/3
10:48 am-12:26 am
1 stop10h 38m
Lancaster
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$375
SeattleLancaster
SEA Seattle/Tacoma Intl - LNS Lancaster
SEALNS
Seattle/Tacoma Intl
Sat 10/31
2:30 pm-12:26 am
1 stop6h 56m
Lancaster
Thu 11/5
6:05 am-12:19 pm
1 stop9h 14m
$394
SeattleLancaster
SEA Seattle/Tacoma Intl - LNS Lancaster
SEALNS
Seattle/Tacoma Intl
Tue 12/22
11:44 pm-7:56 pm
1 stop17h 12m
Lancaster
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$402
SeattleLancaster
SEA Seattle/Tacoma Intl - LNS Lancaster
SEALNS
Seattle/Tacoma Intl
Wed 12/30
1:02 pm-7:56 pm
2 stops27h 54m
Lancaster
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$407
SeattleLancaster
SEA Seattle/Tacoma Intl - LNS Lancaster
SEALNS
Seattle/Tacoma Intl
Wed 10/14
1:56 pm-12:31 am
1 stop7h 35m
Lancaster
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$435
Quickest round-trip
SeattleLancaster
SEA Seattle/Tacoma Intl - LNS Lancaster
SEALNS
Seattle/Tacoma Intl
Sat 10/31
2:30 pm-12:26 am
1 stop6h 56m
Lancaster
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$435
SeattleLancaster
SEA Seattle/Tacoma Intl - LNS Lancaster
SEALNS
Seattle/Tacoma Intl
Sun 11/1
2:30 pm-12:26 am
1 stop6h 56m
Lancaster
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$435
SeattleLancaster
SEA Seattle/Tacoma Intl - LNS Lancaster
SEALNS
Seattle/Tacoma Intl
Sun 12/27
11:44 pm-2:01 pm
1 stop11h 17m
Lancaster
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$468
SeattleLancaster
SEA Seattle/Tacoma Intl - LNS Lancaster
SEALNS
Seattle/Tacoma Intl
Tue 9/29
1:56 pm-12:31 am
1 stop7h 35m
Lancaster
Sat 10/3
9:06 am-9:15 pm
2 stops15h 09m
$480
Showing 1-10 of 13 resultsSorted by cheapest first
Compare providers for flights from Seattle to Lancaster
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 Lancaster 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-Lancaster, Pennsylvania flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Lancaster, Pennsylvania flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Lancaster, Pennsylvania flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Lancaster, Pennsylvania 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-Lancaster, Pennsylvania 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 Lancaster
Have a flexible travel schedule? Discover the best time to fly to Lancaster from Seattle with our price prediction graph.
SEA-LNS
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.
Related info for your journey
Find useful and relevant information for your journey from Seattle to Lancaster. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Lancaster?
Book flights to Lancaster if you plan to visit one of these locationsManheim
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