$225+ Cheap flights from Harrisburg to Seattle (MDT - SEA)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
MDT — SEA
Sep 17 — Sep 241
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Harrisburg to Seattle 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 Harrisburg to Seattle
Cheapest
Best
Last-minute
One-way
Cheapest flights from Harrisburg to SeattleExplore the most affordable flight options available from Harrisburg to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2026.
Explore the most affordable flight options available from Harrisburg to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2026.
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Wed 9/166:54 pm -
1 stop8h 17m
Sat 9/1910:45 pm -
1 stop8h 45m
Deal found 8/14![American Airlines logo]()
$361
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Tue 10/202:08 pm -
1 stop7h 44m
Tue 10/275:05 am -
2 stops10h 52m
Deal found 8/16![United Airlines logo]()
$366
This American Airlines deal was found by Cheapflights users on 8/14. 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 9/246:54 pm -
1 stop8h 17m
Sat 9/2611:57 pm -
1 stop8h 26m
Deal found 8/14![American Airlines logo]()
$370
This United Airlines deal was found by Cheapflights users on 8/13. 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 9/305:54 pm -
1 stop8h 02m
Mon 10/510:48 pm -
2 stops12h 11m
Deal found 8/13![United Airlines logo]()
$375
This Delta deal was found by Cheapflights users on 8/16. 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.
Fri 11/612:13 pm -
1 stop9h 22m
Mon 11/911:59 pm -
1 stop8h 42m
Deal found 8/16![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 8/15. 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 11/65:48 pm -
1 stop8h 32m
Sun 11/85:05 am -
2 stops10h 52m
Deal found 8/15![United Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 8/15. 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.
Sat 9/122:52 pm -
2 stops10h 53m
Sat 9/1911:00 pm -
1 stop7h 51m
Deal found 8/15![United Airlines logo]()
$388
This Delta deal was found by Cheapflights users on 8/14. 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.
Wed 11/46:00 am -
1 stop10h 43m
Tue 11/106:00 am -
1 stop7h 18m
Deal found 8/14![Delta logo]()
$390
This American Airlines deal was found by Cheapflights users on 8/16. 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.
Tue 11/35:00 pm -
1 stop8h 34m
Mon 11/99:45 pm -
1 stop9h 32m
Deal found 8/16![American Airlines logo]()
$391
This Delta deal was found by Cheapflights users on 8/16. 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.
Tue 9/86:09 pm -
1 stop8h 49m
Tue 9/1511:45 am -
1 stop8h 30m
Deal found 8/16![Delta logo]()
$399
This American Airlines deal was found by Cheapflights users on 8/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:32 am -
1 stop10h 48m
Mon 11/910:27 am -
1 stop9h 20m
Deal found 8/15![American Airlines logo]()
$400
This United Airlines deal was found by Cheapflights users on 8/13. 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 11/410:42 am -
2 stops10h 12m
Sun 11/85:05 am -
2 stops8h 41m
Deal found 8/13![United Airlines logo]()
$403
Best flights from Harrisburg to SeattleDiscover carefully curated flight deals from Harrisburg to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2026.
Discover carefully curated flight deals from Harrisburg to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2026.
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:09 pm -
1 stop8h 49m
Mon 9/2111:59 pm -
1 stop8h 04m
Deal found 8/13![Delta logo]()
$370
This United Airlines deal was found by Cheapflights users on 8/13. 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 9/305:54 pm -
1 stop8h 02m
Mon 10/510:48 pm -
2 stops12h 11m
Deal found 8/13![United Airlines logo]()
$375
This United Airlines deal was found by Cheapflights users on 8/15. 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.
Sat 10/102:08 pm -
1 stop7h 44m
Fri 10/167:25 pm -
2 stops11h 26m
Deal found 8/15![United Airlines logo]()
$375
This Delta deal was found by Cheapflights users on 8/14. 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.
Wed 11/46:00 am -
1 stop10h 43m
Tue 11/106:00 am -
1 stop7h 18m
Deal found 8/14![Delta logo]()
$390
This United Airlines deal was found by Cheapflights users on 8/15. 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.
Sat 9/122:52 pm -
2 stops10h 53m
Sat 9/1911:00 pm -
1 stop7h 51m
Deal found 8/15![United Airlines logo]()
$388
This Delta deal was found by Cheapflights users on 8/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:00 am -
1 stop10h 43m
Sun 11/811:10 pm -
1 stop9h 18m
Deal found 8/15![Delta logo]()
$420
This United Airlines deal was found by Cheapflights users on 8/13. 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 11/410:42 am -
2 stops10h 12m
Sun 11/85:05 am -
2 stops8h 41m
Deal found 8/13![United Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Mon 9/145:54 pm -
1 stop7h 51m
Mon 9/217:35 pm -
2 stops11h 16m
Deal found 8/14![United Airlines logo]()
$455
This United Airlines deal was found by Cheapflights users on 8/17. 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 10/205:54 pm -
1 stop8h 02m
Sat 10/2411:13 pm -
1 stop7h 14m
Deal found 8/17![United Airlines logo]()
$471
This United Airlines deal was found by Cheapflights users on 8/14. 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 11/42:40 pm -
1 stop9h 16m
Tue 11/1010:56 pm -
2 stops12h 02m
Deal found 8/14![United Airlines logo]()
$476
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Tue 10/202:08 pm -
2 stops10h 07m
Tue 10/277:35 pm -
2 stops14h 49m
Deal found 8/16![United Airlines logo]()
$481
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Sat 2/610:35 am -
2 stops16h 58m
Sat 2/137:32 pm -
2 stops11h 23m
Deal found 8/17![United Airlines logo]()
$481
Last-minute flights from Harrisburg to SeattleDiscover last-minute flight deals from Harrisburg to Seattle. Data last updated August 18, 2026 and is based on user searches.
Discover last-minute flight deals from Harrisburg to Seattle. Data last updated August 18, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/13. 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 8/295:54 pm -
1 stop7h 49m
Sat 9/510:42 am -
1 stop7h 11m
Deal found 8/13![United Airlines logo]()
$418
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Tue 9/12:45 pm -
1 stop10h 14m
Sat 9/55:50 am -
1 stop10h 00m
Deal found 8/17![American Airlines logo]()
$457
This American Airlines deal was found by Cheapflights users on 8/14. 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 9/76:15 am -
1 stop8h 35m
Mon 9/1410:45 pm -
1 stop8h 51m
Deal found 8/14![American Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 8/16. 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.
Tue 9/86:09 pm -
1 stop8h 49m
Tue 9/1511:45 am -
1 stop8h 30m
Deal found 8/16![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Fri 9/1110:30 am -
1 stop8h 01m
Fri 9/187:35 pm -
2 stops11h 16m
Deal found 8/14![United Airlines logo]()
$375
This United Airlines deal was found by Cheapflights users on 8/15. 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.
Sat 9/122:52 pm -
2 stops10h 53m
Sat 9/1911:00 pm -
1 stop7h 51m
Deal found 8/15![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Mon 9/145:54 pm -
1 stop7h 51m
Mon 9/217:35 pm -
2 stops11h 16m
Deal found 8/14![United Airlines logo]()
$455
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Tue 9/156:54 pm -
1 stop8h 17m
Mon 9/2110:36 pm -
1 stop8h 41m
Deal found 8/17![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Wed 9/166:54 pm -
1 stop8h 17m
Sat 9/1910:45 pm -
1 stop8h 45m
Deal found 8/14![American Airlines logo]()
$361
This United Airlines deal was found by Cheapflights users on 8/14. 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 9/162:52 pm -
2 stops10h 53m
Sat 9/1911:00 pm -
1 stop7h 51m
Deal found 8/14![United Airlines logo]()
$451
This American Airlines deal was found by Cheapflights users on 8/14. 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 9/246:54 pm -
1 stop8h 17m
Sat 9/2611:57 pm -
1 stop8h 26m
Deal found 8/14![American Airlines logo]()
$370
One-way flights from Harrisburg to SeattleSearch for one-way flight options from Harrisburg to Seattle. Find affordable one-way fares based on user searches. Data last updated August 18, 2026.
Search for one-way flight options from Harrisburg to Seattle. Find affordable one-way fares based on user searches. Data last updated August 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Fri 10/29:11 pm -
2 stops20h 57m
Deal found 8/17![Multiple Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/233:59 pm -
2 stops45h 40m
Deal found 8/14![Multiple Airlines logo]()
$280
This American Airlines deal was found by Cheapflights users on 8/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:00 am -
1 stop8h 25m
Deal found 8/13![American Airlines logo]()
$290
This American Airlines deal was found by Cheapflights users on 8/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:29 am -
1 stop11h 22m
Deal found 8/13![American Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Sat 10/313:15 pm -
1 stop7h 59m
Deal found 8/17![American Airlines logo]()
$304
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Sat 10/3110:43 am -
2 stops10h 16m
Deal found 8/17![United Airlines logo]()
$309
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Fri 11/277:08 am -
1 stop10h 48m
Deal found 8/17![American Airlines logo]()
$327
This American Airlines deal was found by Cheapflights users on 8/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/206:15 am -
1 stop8h 31m
Deal found 8/15![American Airlines logo]()
$333
This KAYAK deal was found by Cheapflights users on 8/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:15 am -
1 stop8h 31m
Deal found 8/14![American Airlines logo]()
$340
Find flight deals from Harrisburg to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Harrisburg (MDT) to Seattle (SEA). 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 August 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $361 (American Airlines) |
One-way from | $225 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $487 |
Cheapflights Fare Finder
Customize your flight search to find flights from Harrisburg 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, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2026.
Use the filters below to find and compare flights from Harrisburg to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
HarrisburgSeattle
MDT Harrisburg - SEA Seattle/Tacoma Intl
MDTSEA
Harrisburg
Tue 9/15
6:09 pm-11:58 pm
1 stop8h 49m
Seattle/Tacoma Intl
Mon 9/21
11:59 pm-11:03 am
1 stop8h 04m
$370
HarrisburgSeattle
MDT Harrisburg - SEA Seattle/Tacoma Intl
MDTSEA
Harrisburg
Wed 9/30
5:54 pm-10:56 pm
1 stop8h 02m
Seattle/Tacoma Intl
Mon 10/5
10:48 pm-1:59 pm
2 stops12h 11m
$375
HarrisburgSeattle
MDT Harrisburg - SEA Seattle/Tacoma Intl
MDTSEA
Harrisburg
Sat 10/10
2:08 pm-6:52 pm
1 stop7h 44m
Seattle/Tacoma Intl
Fri 10/16
7:25 pm-9:51 am
2 stops11h 26m
$375
HarrisburgSeattle
MDT Harrisburg - SEA Seattle/Tacoma Intl
MDTSEA
Harrisburg
Sat 9/12
2:52 pm-10:45 pm
2 stops10h 53m
Seattle/Tacoma Intl
Sat 9/19
11:00 pm-9:51 am
1 stop7h 51m
$388
HarrisburgSeattle
MDT Harrisburg - SEA Seattle/Tacoma Intl
MDTSEA
Harrisburg
Wed 11/4
6:00 am-1:43 pm
1 stop10h 43m
Seattle/Tacoma Intl
Tue 11/10
6:00 am-4:18 pm
1 stop7h 18m
$390
HarrisburgSeattle
MDT Harrisburg - SEA Seattle/Tacoma Intl
MDTSEA
Harrisburg
Wed 11/4
10:42 am-5:54 pm
2 stops10h 12m
Seattle/Tacoma Intl
Sun 11/8
5:05 am-4:46 pm
2 stops8h 41m
$403
HarrisburgSeattle
MDT Harrisburg - SEA Seattle/Tacoma Intl
MDTSEA
Harrisburg
Wed 11/4
6:00 am-1:43 pm
1 stop10h 43m
Seattle/Tacoma Intl
Sun 11/8
11:10 pm-11:28 am
1 stop9h 18m
$420
HarrisburgSeattle
MDT Harrisburg - SEA Seattle/Tacoma Intl
MDTSEA
Harrisburg
Mon 9/14
5:54 pm-10:45 pm
1 stop7h 51m
Seattle/Tacoma Intl
Mon 9/21
7:35 pm-9:51 am
2 stops11h 16m
$455
Quickest round-trip
HarrisburgSeattle
MDT Harrisburg - SEA Seattle/Tacoma Intl
MDTSEA
Harrisburg
Tue 10/20
5:54 pm-10:56 pm
1 stop8h 02m
Seattle/Tacoma Intl
Sat 10/24
11:13 pm-9:27 am
1 stop7h 14m
$471
HarrisburgSeattle
MDT Harrisburg - SEA Seattle/Tacoma Intl
MDTSEA
Harrisburg
Wed 11/4
2:40 pm-8:56 pm
1 stop9h 16m
Seattle/Tacoma Intl
Tue 11/10
10:56 pm-1:58 pm
2 stops12h 02m
$476
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Harrisburg to Seattle
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 Harrisburg to Seattle in August.
| 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 Harrisburg-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Harrisburg-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Harrisburg-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Harrisburg-Seattle 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 Harrisburg-Seattle 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 Harrisburg to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Harrisburg with our price prediction graph.
MDT-SEA
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 Harrisburg to Seattle
How far ahead should I book a flight from Harrisburg to Seattle?
Booking 28 days in advance of your planned departure date is, on average, the best time to get cheap flights from Harrisburg to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Harrisburg to Seattle?
Currently, January is the cheapest month in which you can book a flight from Harrisburg to Seattle (average of $298). Flying from Harrisburg to Seattle in June is currently the most expensive (average of $674). 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 Harrisburg to Seattle?
Airfare is below average for this route at the moment.
Harrisburg to Seattle flights typically cost between $377 and $667 in September.The cheapest round-trip price found within the last 5 days was $361 on American Airlines (Sep 16-Sep 19).
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated August 18, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andUnited Airlines from Harrisburg to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Related info for your journey
Find useful and relevant information for your journey from Harrisburg to Seattle. 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 Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Tukwila
Olympia
Edmonds
Snoqualmie
Lynnwood
Tumwater
Centralia
Puyallup
Kent
Marysville
Ellensburg
Ocean Shores
Lakewood
Fife
Poulsbo
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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Seattle flight routes
Alternative routes for Harrisburg to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Harrisburg to Seattle by cabin class
Find flights from Harrisburg to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Harrisburg and Seattle flights
Browse other Harrisburg and Seattle flight options. Last updated on August 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 18, 2026.
Top 4 airlines flying from Harrisburg to Seattle
Discover the top 4 airlines that operate flights from Harrisburg to Seattle. 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 2,558,603 searches. Data last updated August 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$159 | Average$468 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$258 | Average$465 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$293 | Average$424 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$422 | Average$738 | FlexibilityNo cancel fee | On-time75% |