₹8,132 Cheap Flights from St. Louis (STL) to Seattle (SEA)

View ₹8,132 flight on Fri, 29 Aug 2025Opens in a new window

Popular airlines from Lambert-St. Louis International Airport (STL) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from St. Louis (STL) to Seattle (SEA)

Prices were available within the past 7 days and start at ₹8,132 for one-way flights and ₹16,227 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 8 May - Wed, 14 May
STL
St. Louis
SEA
Seattle
₹16,227 Return, found 6 hours ago
₹16,227
Return
found 6 hours ago
Select Delta flight, departing Thu, 8 May from St. Louis to Seattle, returning Wed, 14 May, priced at ₹16,227 found 6 hours ago
Delta
Wed, 7 May - Sat, 10 May
STL
St. Louis
SEA
Seattle
₹16,258 Return, found 2 days ago
₹16,258
Return
found 2 days ago
Select Delta flight, departing Wed, 7 May from St. Louis to Seattle, returning Sat, 10 May, priced at ₹16,258 found 2 days ago
Delta
Wed, 30 Apr - Mon, 5 May
STL
St. Louis
SEA
Seattle
₹18,811 Return, found 5 days ago
₹18,811
Return
found 5 days ago
Select Delta flight, departing Wed, 30 Apr from St. Louis to Seattle, returning Mon, 5 May, priced at ₹18,811 found 5 days ago
Delta
Thu, 8 May - Wed, 14 May
STL
St. Louis
SEA
Seattle
₹19,237 Return, found 6 hours ago
₹19,237
Return
found 6 hours ago
Select Delta flight, departing Thu, 8 May from St. Louis to Seattle, returning Wed, 14 May, priced at ₹19,237 found 6 hours ago
Delta
Wed, 7 May - Sat, 10 May
STL
St. Louis
SEA
Seattle
₹19,279 Return, found 2 days ago
₹19,279
Return
found 2 days ago
Select Delta flight, departing Wed, 7 May from St. Louis to Seattle, returning Sat, 10 May, priced at ₹19,279 found 2 days ago
Delta
Mon, 12 May - Wed, 14 May
STL
St. Louis
SEA
Seattle
₹19,327 Return, found 4 days ago
₹19,327
Return
found 4 days ago
Select Delta flight, departing Mon, 12 May from St. Louis to Seattle, returning Wed, 14 May, priced at ₹19,327 found 4 days ago
Delta
Wed, 30 Apr - Mon, 5 May
STL
St. Louis
SEA
Seattle
₹21,837 Return, found 5 days ago
₹21,837
Return
found 5 days ago
Select Delta flight, departing Wed, 30 Apr from St. Louis to Seattle, returning Mon, 5 May, priced at ₹21,837 found 5 days ago
Delta
Wed, 9 Jul - Wed, 16 Jul
STL
St. Louis
SEA
Seattle
₹22,252 Return, found 9 hours ago
₹22,252
Return
found 9 hours ago
Select Delta flight, departing Wed, 9 Jul from St. Louis to Seattle, returning Wed, 16 Jul, priced at ₹22,252 found 9 hours ago
United
Sat, 30 Aug - Fri, 5 Sep
STL
St. Louis
SEA
Seattle
₹23,247 Return, found 3 days ago
₹23,247
Return
found 3 days ago
Select United flight, departing Sat, 30 Aug from St. Louis to Seattle, returning Fri, 5 Sep, priced at ₹23,247 found 3 days ago
American Airlines
Tue, 6 May - Fri, 9 May
STL
St. Louis
SEA
Seattle
₹23,978 Return, found 9 hours ago
₹23,978
Return
found 9 hours ago
Select American Airlines flight, departing Tue, 6 May from St. Louis to Seattle, returning Fri, 9 May, priced at ₹23,978 found 9 hours ago
Flight from St. Louis to Seattle route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
₹16,227
Distance
2728 km

St. Louis to Seattle Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from St. Louis to Seattle will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Seattle.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with STL to SEA flights that won’t make your bank account wince. Ready to temporarily leave behind St. Louis for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to SEA with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from St. Louis Lambert International Airport to Sea-Tac Airport?
If you’re travelling between Lambert-St. Louis Intl. Airport (STL) and SEA, round-trip flights start from ₹16,227. This price is based on airfares available within the last 7 days on Expedia for flights departing within the next year, so don’t delay. Book now and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Lambert-St. Louis Intl. Airport (STL) to Seattle - Tacoma Intl. Airport (SEA)?
Each airline has different terms and conditions. If you decide to cancel your holiday, visit our Customer Service Portal.
How do I find cheap flights from St. Louis Lambert International Airport to SEA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Lambert Field to Sea-Tac Airport flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from St. Louis Lambert International Airport to Sea-Tac Airport?
It’s around 2,700 kilometres between STL and SEA, so you’ll be strapped into your seat for a while. Keep yourself entertained with things like your e-reader or a thrilling novel.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Seattle - Tacoma Intl. Airport (SEA)?
Offering 30 flights each month, Alaska Airlines (AS) is a popular choice when flying directly from St. Louis Lambert International Airport to Sea-Tac Airport.
Are STL to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from St. Louis Lambert International Airport to Sea-Tac Airport can be hit-or-miss. It is possible to find a bargain, but then again, you could miss out altogether! If you’d rather play it safe and start planning your trip ahead of time, Expedia compares flight deals up to 12 months in advance. Just bear in mind that not all airlines publish their prices so far in advance. Our advice? Check back often as prices are updated regularly.

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