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Uncover the best deals on St Louis to Seattle flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest STL - SEA Flights
Useful information for finding best airline tickets from Lambert St Louis International to Seattle Tacoma International on your next trip.
Cheapest Round Trip Flight
$339
Southwest Airlines
• 1 stop
• 20h 5m
Nov 21 – Dec 01
The cheapest round trip flight from St Louis to Seattle (STL-SEA-STL) is currently $339
Cheapest Direct Flight
$420
Alaska Airlines
• nonstop
• 7h 15m
Nov 20
The cheapest nonstop flight from St Louis to Seattle (STL-SEA) is currently $420
Fastest Flight
7h 15m
The fastest nonstop flight from St Louis to Seattle (STL-SEA) takes 7h 15m
Top Airlines Flying from St Louis to Seattle
Latest Flight Deals from St Louis (STL) to Seattle (SEA)
Compare and book low fare round-trip air tickets from St Louis to Seattle. Ideal for travelers with confirmed return itineraries.
Nov 21 - Dec 01, Economy
St Louis → Seattle
20h 5m
3:30 PM - 1:35 AM • 1 stop
St Louis → Seattle
19h
7:40 AM - 9:20 PM • 1 stop
Southwest Airlines
Nov 21 - Dec 01, Economy
St Louis → Seattle
12h 20m
5:25 PM - 11:05 PM • 1 stop
St Louis → Seattle
11h 45m
2:05 PM - 11:10 PM • 1 stop
Southwest Airlines
Nov 21 - Dec 01, Economy
St Louis → Seattle
13h 45m
2:00 PM - 8:25 PM • 1 stop
St Louis → Seattle
11h 45m
2:05 PM - 11:10 PM • 1 stop
Southwest Airlines
Nov 21 - Dec 01, Economy
St Louis → Seattle
16h 57m
10:20 AM - 6:37 PM • 1 stop
St Louis → Seattle
10h 3m
1:25 PM - 9:28 PM • 1 stop
Delta Airlines
Nov 21 - Dec 01, Economy
St Louis → Seattle
13h 40m
6:40 PM - 1:00 AM • 1 stop
St Louis → Seattle
10h 35m
12:15 AM - 8:50 AM • 1 stop
Southwest Airlines
Looking for the fastest way to Seattle? These direct flight options from STL to SEA offer both convenience and value—no layovers, just straight to your destination.
Nov 20 - Nov 30, Economy
St Louis → Seattle
7h 15m
3:20 PM - 5:55 PM • nonstop
St Louis → Seattle
5h 52m
8:30 AM - 2:22 PM • nonstop
Alaska Airlines
Nov 20 - Nov 30, Economy
St Louis → Seattle
7h 20m
6:00 AM - 8:40 AM • nonstop
St Louis → Seattle
5h 51m
6:08 PM - 11:59 PM • nonstop
Alaska Airlines
Nov 21 - Dec 01, Economy
St Louis → Seattle
7h 20m
6:00 AM - 8:40 AM • nonstop
St Louis → Seattle
5h 50m
10:50 AM - 4:40 PM • nonstop
Alaska Airlines
Nov 20 - Nov 30, Economy
St Louis → Seattle
7h 20m
6:00 AM - 8:40 AM • nonstop
St Louis → Seattle
5h 51m
6:08 PM - 11:59 PM • nonstop
American Airlines
Nov 21 - Dec 01, Economy
St Louis → Seattle
7h 20m
6:00 AM - 8:40 AM • nonstop
St Louis → Seattle
5h 50m
10:50 AM - 4:40 PM • nonstop
American Airlines
FAQs on St Louis to Seattle Flights
What are the airports in St Louis?
STL
What’s the most popular airline flying from STL to SEA?
The most popular airline flying from St Louis to Seattle are
Can I fly from STL to SEA non-stop?
Yes, you can fly STL to SEA non-stop on
Which airlines fly nonstop between St Louis and Seattle?
The non-stop flights between St Louis and Seattle are .
What’s the earliest departure time from STL to SEA Airport?
The earliest flight leaves STL at 6:00 am and lands in SEA - Seattle Tacoma International
What are the airports in Seattle?
SEA
Can I make changes to my St Louis to Seattle flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from STL to SEA?
Read the fare rules of the St Louis to Seattle air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from St Louis and Seattle?
operate flights between St Louis and Seattle
How long does a flight from St Louis to Seattle take?
It takes approximately 4 hour to fly non-stop from STL to SEA, which is 1709.07 miles by air.
Which airlines provide the cheapest flights from St Louis (STL) to Seattle (SEA) ?
In the past couple of days, the cheapest tickets to SEA from STL were found on DL : USD 482
Do I need a passport to fly between STL and SEA?
No
What’s the latest departure time from STL to SEA ?
The last flight leaves STL at 6:40 pm
Hotels in Seattle (SEA)
5 hotels near Seattle Tacoma International — compare rates from top booking sites.
5-star hotel
Fairmont Olympic Hotel
📍 411 University St, Seattle, Washington 98101
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5-star hotel
Four Seasons Hotel Seattle
📍 99 Union St, Seattle, Washington 98101
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5-star hotel
Olympia Palace
📍 Praxitelous Condili St., Olympia, Peloponesse 27065
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5-star hotel
Arty Grand Hotel
📍 Drouva Ancient Olympia, Olympia, Peloponesse 27065
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5-star hotel
Hotel Bellevue
📍 11200 SE 6th St, Bellevue, Washington 98004
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Hotel Deals in Seattle (WA)
Wyndham Hotels & Resorts
Days Inn by Wyndham Seatac Airport
7.6/10
★★☆☆☆
Hotel
86.0 rooms
✓ Breakfast
📍 19015 Pacific Highway South, Seattle (WA), Washington
Days Inn by Wyndham Seatac Airport offers top-notch services and amenities, ensuring guests experience utmost comfort.Maintain seamless communication using the complimentary Wi-Fi at hotel. Effortles…
Check-in 02:00 PM · Check-out 12:00 PM
$52/night
View Deal
Wyndham Hotels & Resorts
Travelodge by Wyndham Seattle By The Space Needle
7.7/10
★★☆☆☆
Hotel
88.0 rooms
✓ Free WiFi
📍 200 6Th Ave. North, Seattle (WA), Washington
Great care is taken to ensure guests experience comfort through top-notch services and amenities.Remain linked during your visit by utilizing the complimentary internet access available.Experience th…
Check-in 03:00 PM · Check-out 11:00 AM
$84/night
View Deal
Choice Hotels
Comfort Inn & Suites Sea-Tac Airport
7.9/10
★★★☆☆
Hotel
119.0 rooms
✓ Free WiFi
✓ Breakfast
📍 19333 International Boulevard (Pacific Hwy S), Seattle (WA), Washington
Great care is taken to ensure guests experience comfort through top-notch services and amenities. Stay connected with your associates, as complimentary Wi-Fi is available during your entire visit. To…
$87/night
View Deal
Choice Hotels
Sleep Inn Sea Tac Airport
8.5/10
★★★☆☆
Hotel
105.0 rooms
✓ Free WiFi
✓ Breakfast
📍 20406 International Blvd, Seattle (WA), Washington
Great care is taken to ensure guests experience comfort through top-notch services and amenities.Remain linked during your visit by utilizing the complimentary internet access available. Prior to you…
Check-in 03:00 PM · Check-out 12:00 PM
$87/night
View Deal
Warwick International Hotels
Warwick Seattle
8.0/10
★★★★☆
Hotel
📍 401 Lenora Street, Seattle (WA), Washington
Warwick Seattle provides flawless service and all the necessary facilities for visitors.Stay connected with your associates, as complimentary Wi-Fi is available during your entire visit. When arrivin…
Check-in 03:00 PM · Check-out 12:00 PM
$90/night
View Deal
Choice Hotels
Country Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA
8.7/10
★★★☆☆
Hotel
219.0 rooms
✓ Free WiFi
✓ Breakfast
📍 3100 South 192nd Street, Seattle (WA), Washington
Great care is taken to ensure guests experience comfort through top-notch services and amenities.Stay connected with your associates, as complimentary Wi-Fi is available during your entire visit.To f…
Check-in 03:00 PM · Check-out 12:00 PM
$90/night
View Deal
Wyndham Hotels & Resorts
The Dylan, a Baymont by Wyndham
7.8/10
★★★☆☆
Hotel
1.0 rooms
✓ Free WiFi
✓ Breakfast
📍 2106 5th Ave, Seattle, Seattle (WA), Washington
Check-in 03:00 PM · Check-out 11:00 AM
$95/night
View Deal
Independent
Hotel Max
8.4/10
★★★★☆
Hotel
163.0 rooms
✓ Free WiFi
📍 620 Stewart Street, Seattle (WA), Washington
At Hotel Max, exceptional service and top-notch amenities create a memorable experience for guests.Complimentary internet access is available in the hotel to ensure you stay connected during your vis…
Check-in 04:00 PM · Check-out 12:00 PM
$98/night
View Deal
Hilton Worldwide
DoubleTree by Hilton Seattle-Airport
7.9/10
★★★☆☆
Hotel
850.0 rooms
✓ Free WiFi
✓ Breakfast
📍 18740 International Boulevard, Seattle (WA), Washington
DoubleTree by Hilton Hotel Seattle Airport provides flawless service and all the necessary facilities for visitors.Remain linked during your visit by utilizing the complimentary internet access avail…
Check-in 03:00 PM · Check-out 12:00 PM
$106/night
View Deal
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St Louis (STL) to Seattle (SEA): Airport Information
| Origin Airport | Lambert St Louis International , St Louis, US |
| Destination Airport | Seattle Tacoma International , Seattle, US |
| Distance | 1709 miles |
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