$99 Cheap Delta flights from Seattle to St. Louis (SEA to STL)

Find The Best Day To Fly from Seattle to St. Louis

Amazing Delta SEA to STL Flight Deals

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $152 round trip and $99 one way. Prices and availability subject to change. Additional terms may apply.

Sat, Nov 1 - Wed, Nov 5
SEA
Seattle
STL
St. Louis
$152 Roundtrip, found 5 days ago
$152
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 1 from Seattle to St. Louis, returning Wed, Nov 5, priced at $152 found 5 days ago
Sat, Nov 1 - Wed, Nov 5
SEA
Seattle
STL
St. Louis
$179 Roundtrip, found 5 days ago
$179
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 1 from Seattle to St. Louis, returning Wed, Nov 5, priced at $179 found 5 days ago
Fri, Oct 31 - Mon, Nov 3
SEA
Seattle
STL
St. Louis
$211 Roundtrip, found 1 day ago
$211
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 31 from Seattle to St. Louis, returning Mon, Nov 3, priced at $211 found 1 day ago
Tue, Nov 4 - Wed, Nov 5
SEA
Seattle
STL
St. Louis
$235 Roundtrip, found 2 days ago
$235
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Nov 4 from Seattle to St. Louis, returning Wed, Nov 5, priced at $235 found 2 days ago

Frequently asked questions

Can I catch a flight from Seattle - Tacoma Intl. Airport (SEA) to Lambert Field right now?
It's wise to find out about any quarantine requirements and travel advice reports in place in your destination. Be sure to visit our Covid-19 Travel Advisor for up-to-date information on flying to Lambert-St. Louis Intl. Airport (STL).
What terminal is Delta Air Lines at Sea-Tac Airport?
Check your boarding pass to find out which SEA terminal you'll be departing from on your way to St. Louis Lambert International Airport with Delta Air Lines. If you can't find the information on there, ask your airline.
Are there Delta Air Lines non-stop flights from SEA to STL?
As you can't go direct from Seattle - Tacoma Intl. Airport (SEA) to St. Louis Lambert International Airport with Delta Air Lines, make the most of your layover. Sit down to one of your favorite drinks at a cozy airport bar, or wander about the terminal and indulge in some retail therapy.
How long is a Delta Air Lines flight from SEA to STL?
Depending on good weather and no delays, your Delta Air Lines flight from SEA to STL will take on average 6 hours and 30 minutes. You'll have plenty of time to enjoy a drink or two, get some sleep and fine tune your travel schedule before you land.
How many direct and indirect flights does Delta Air Lines fly from SEA to STL?
You'll have plenty of choice if you'd prefer to fly with Delta Air Lines from SEA to STL. It's currently operating 6 flights per day.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to St. Louis Lambert International Airport, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best Delta flight from Seattle SEA to St. Louis STL 

To find the best deals on flights to Seattle from St. Louis with Delta, just enter your travel dates, filter by Delta, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Seattle SEA to St. Louis STL with Delta 

If you’re planning a round trip, booking return flights with Delta is usually the most cost-effective option. With airfares ranging from $152 to $235, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way Delta flights from Seattle SEA to St. Louis STL 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way Delta flight from Seattle to St. Louis costs from $99. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to St. Louis STL from  Seattle SEA with Delta 

To find a cheap Delta flight from Seattle SEA to St. Louis STL, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on Delta flights from Seattle SEA to St. Louis STL 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as November, or if you book a flight with a stopover. 

 

Find nonstop flights from Seattle SEA to St. Louis STL with Delta 

If you’re keen to be on St. Louis soil fast, don’t waste time with a stopover—filter your search results to show direct Delta flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for Delta flights from Seattle SEA to St. Louis STL 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to St. Louis STL from  Seattle SEA with Delta on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

Delta Airports
Hop on a(n) Delta flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ATLUSAHartsfield-Jackson Atlanta Intl.252
DTWUSADetroit Metropolitan Wayne County156
MSPUSAMinneapolis - St. Paul Intl.131
SLCUSASalt Lake City Intl.116
SEAUSASeattle - Tacoma Intl.57
LAXUSALos Angeles Intl.41
AMSNLDSchiphol31
YYCCANCalgary Intl.26
YYZCANPearson Intl.24
JFKUSAJohn F. Kennedy Intl.23

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Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
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