$147 Cheap Flights from Greenville (GSP) to Seattle (SEA)

View $147 flight on Wed, Nov 19, 2025Opens in a new window

Popular airlines from Greenville-Spartanburg Intl. Airport (GSP) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Greenville to Seattle (GSP-SEA)

Prices were available within the past 7 days and start at $147 for one-way flights and $303 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Sep 10 - Tue, Sep 16
GSP
Greenville
SEA
Seattle
$303 Roundtrip, found 6 days ago
$303
Roundtrip
found 6 days ago
Select United flight, departing Wed, Sep 10 from Greenville to Seattle, returning Tue, Sep 16, priced at $303 found 6 days ago
American Airlines
Tue, Sep 9 - Wed, Sep 17
GSP
Greenville
SEA
Seattle
$312 Roundtrip, found 6 days ago
$312
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Sep 9 from Greenville to Seattle, returning Wed, Sep 17, priced at $312 found 6 days ago
United
Tue, Sep 9 - Wed, Sep 17
GSP
Greenville
SEA
Seattle
$313 Roundtrip, found 6 days ago
$313
Roundtrip
found 6 days ago
Select United flight, departing Tue, Sep 9 from Greenville to Seattle, returning Wed, Sep 17, priced at $313 found 6 days ago
Delta
Wed, Sep 24 - Wed, Oct 22
GSP
Greenville
SEA
Seattle
$317 Roundtrip, found 4 hours ago
$317
Roundtrip
found 4 hours ago
Select Delta flight, departing Wed, Sep 24 from Greenville to Seattle, returning Wed, Oct 22, priced at $317 found 4 hours ago
Southwest Airlines
Tue, Sep 16 - Tue, Sep 23
GSP
Greenville
SEA
Seattle
$317 Roundtrip, found 3 days ago
$317
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Tue, Sep 16 from Greenville to Seattle, returning Tue, Sep 23, priced at $317 found 3 days ago
American Airlines
Wed, Sep 24 - Wed, Oct 1
GSP
Greenville
SEA
Seattle
$317 Roundtrip, found 4 hours ago
$317
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Wed, Sep 24 from Greenville to Seattle, returning Wed, Oct 1, priced at $317 found 4 hours ago
United
Wed, Sep 17 - Wed, Sep 24
GSP
Greenville
SEA
Seattle
$317 Roundtrip, found 11 hours ago
$317
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Sep 17 from Greenville to Seattle, returning Wed, Sep 24, priced at $317 found 11 hours ago
United
Tue, Oct 28 - Tue, Nov 4
GSP
Greenville
SEA
Seattle
$319 Roundtrip, found 12 hours ago
$319
Roundtrip
found 12 hours ago
Select United flight, departing Tue, Oct 28 from Greenville to Seattle, returning Tue, Nov 4, priced at $319 found 12 hours ago
United
Wed, Sep 24 - Wed, Oct 1
GSP
Greenville
SEA
Seattle
$322 Roundtrip, found 4 hours ago
$322
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Sep 24 from Greenville to Seattle, returning Wed, Oct 1, priced at $322 found 4 hours ago
Alaska Airlines
Tue, Oct 7 - Wed, Oct 8
GSP
Greenville
SEA
Seattle
$521 Roundtrip, found 6 hours ago
$521
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Tue, Oct 7 from Greenville to Seattle, returning Wed, Oct 8, priced at $521 found 6 hours ago

Find the cheapest month to fly from Greenville (GSP) to Seattle (SEA)

August is typically the cheapest month to fly

From $214 - $857 per traveler.

Graph displaying average flight prices per month

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $422
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $422
Flights from Greenville (GSP) to Seattle (SEA)
Origin airport
Greenville-Spartanburg Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$302
Distance
2227 mi

Greenville to Seattle Flights

The cheapest times to fly from Greenville to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Greenville to Seattle are during the month of September. You can find some of the cheapest flights from Greenville to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Greenville to Seattle

Sunday is one of the best days to book for cheap flights from Greenville to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Greenville to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Greenville to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $147 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Greenville to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Greenville to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Greenville-Spartanburg Intl. Airport (GSP) to Seattle - Tacoma Intl. Airport (SEA) cost?
Snag a cheap one-way flight from $147 or cheap return flight from $303 from Greenville-Spartanburg Intl. Airport (GSP) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Greenville-Spartanburg Intl. Airport (GSP) to Seattle - Tacoma Intl. Airport (SEA)?
September is the cheapest month to fly from GSP to SEA. Traveling outside of peak seasons is often the key to landing a great deal.
What is the cheapest airline that flies from Greenville-Spartanburg Intl. Airport (GSP) to Seattle - Tacoma Intl. Airport (SEA)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll take you from GSP to SEA. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Greenville-Spartanburg Intl. Airport (GSP) to Seattle - Tacoma Intl. Airport (SEA)?
You'll have to take a flight with a layover when traveling from Greenville-Spartanburg Intl. Airport (GSP) to Seattle - Tacoma Intl. Airport (SEA). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from GSP to SEA?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Greenville-Spartanburg Intl. Airport (GSP) to Seattle - Tacoma Intl. Airport (SEA)?
To land at Seattle - Tacoma Intl. Airport (SEA) on time, pick a flight that takes off from Greenville-Spartanburg Intl. Airport (GSP) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Greenville-Spartanburg Intl. Airport (GSP) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Last-minute fares from GSP to SEA are generally more expensive. To lock in the best rates, start looking for flights ahead of time. That being said, if you can play around with your travel dates, you may score a cheap fare just before your departure.
Is it cheaper to book a GSP to SEA flight and hotel package?
You'll typically save money by securing a GSP to SEA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After choosing your ideal accommodations and flights, you can add extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Greenville-Spartanburg Intl. Airport (GSP) to Seattle - Tacoma Intl. Airport (SEA)?
In most instances, you can modify or cancel your GSP to SEA flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like more information, head to our Customer Service portal.

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*Available to One Key members.