How does KAYAK find such low prices on flights from Missouri to Seattle?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to Seattle. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to Seattle?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Missouri is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Missouri to Seattle?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Missouri with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to Seattle?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$55 CHEAP FLIGHTS from Missouri to Seattle

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Cheap Flight Deals from Missouri to Seattle

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Missouri to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Missouri to Seattle

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Missouri to Seattle.

Discover the best prices and deals for you by selecting your travel dates.

Choose your dates

6:51 pm - 12:44 amSTL-SEA

7h 53m1 stop

6:00 am - 9:09 amSEA-STL

25h 09m1 stop

$119Frontier

Find Deal

Wed, Apr 30 - Tue, May 6

6:51 pm - 12:44 amSTL-SEA

7h 53m1 stop

6:00 am - 10:01 amSEA-STL

26h 01m1 stop

$120Frontier

Find Deal

Wed, Apr 23 - Tue, Apr 29

7:00 am - 8:59 amMCI-SEA

3h 59mnonstop

6:33 pm - 11:59 pmSEA-MCI

3h 26mnonstop

$148Alaska Airlines

Find Deal

Thu, Mar 20 - Wed, Mar 26

6:35 am - 8:43 amMCI-SEA

4h 08mnonstop

5:30 pm - 11:00 pmSEA-MCI

3h 30mnonstop

$157Delta

Find Deal

Wed, Mar 12 - Thu, Mar 27

6:35 am - 8:43 amMCI-SEA

4h 08mnonstop

6:20 am - 3:09 pmSEA-MCI

6h 49m1 stop

$167Delta

Find Deal

Wed, Mar 12 - Tue, Mar 25

6:51 pm - 12:44 amSTL-SEA

7h 53m1 stop

6:03 pm - 11:59 pmSEA-STL

3h 56mnonstop

$169

Find Deal

Wed, Apr 23 - Tue, Apr 29

6:33 pm - 9:35 amSTL-SEA

17h 02m1 stop

6:04 pm - 11:59 pmSEA-STL

3h 55mnonstop

$190

Find Deal

Sat, Apr 5 - Sat, Apr 12

5:27 pm - 12:51 amSTL-SEA

9h 24m1 stop

11:59 pm - 9:22 amSEA-STL

7h 23m1 stop

$203American Airlines

Find Deal

Fri, Apr 4 - Mon, Apr 7

6:44 am - 9:14 amSTL-SEA

4h 30mnonstop

6:03 pm - 11:59 pmSEA-STL

3h 56mnonstop

$217Alaska Airlines

Find Deal

Tue, Apr 8 - Tue, Apr 22

5:06 am - 12:50 pmSTL-SEA

9h 44m1 stop

11:59 pm - 8:48 amSEA-STL

6h 49m1 stop

$233American Airlines

Find Deal

Wed, Mar 12 - Sun, Mar 16

Low season	January
High season	July
Cheapest flight	$55

Best time to beat the crowds with an average 14% drop in price.

Most popular time to fly with an average 17% increase in price.

Flight from St. Louis to Seattle

How does KAYAK find such low prices on flights from Missouri to Seattle?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to Seattle.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to Seattle?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Missouri is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Missouri to Seattle?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Missouri with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to Seattle?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.