Cheap flights from Saint Louis to Seattle

Flights tailored to your budget

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Cheap Saint Louis - Seattle flight offers

Find cheap flight tickets and last-minute flight deals from Saint Louis to Seattle

Southwest Airlines
Fri, 07/10 (STL) Saint Louis -> (SEA) Seattle
Direct
Southwest Airlines
Sat, 07/18 (SEA) Seattle -> (STL) Saint Louis
Direct

Price found Yesterday
from $271
Southwest Airlines
Sat, 07/11 (STL) Saint Louis -> (SEA) Seattle
Direct
Southwest Airlines
Sat, 07/18 (SEA) Seattle -> (STL) Saint Louis
Direct

Price found 10 days ago
from $367
Southwest Airlines
Fri, 07/10 (STL) Saint Louis -> (SEA) Seattle
Direct
Southwest Airlines
Sat, 07/18 (SEA) Seattle -> (STL) Saint Louis
Direct

Price found Yesterday
from $271
Southwest Airlines
Sat, 07/11 (STL) Saint Louis -> (SEA) Seattle
Direct
Southwest Airlines
Sat, 07/18 (SEA) Seattle -> (STL) Saint Louis
Direct

Price found 10 days ago
from $367

Info about flights from Saint Louis to Seattle

Some useful info about flights from Saint Louis to Seattle to help you plan your next trip

Average flight duration 4h 23m
Cheapest month November
Average number of flights per week 6
First flight time 05:50
Last flight time 21:45
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Top airlines on the route Saint Louis - Seattle

Airlines providing flights to Seattle from Saint Louis

How much is a flight from Saint Louis to Seattle?

Depending on when you travel and how far in advance you book, fares between Saint Louis and Seattle can differ a lot.

Select your dates to check current offers.

Low-cost airlines offer competitive fares, but often add charges for extra services. Keep that in mind when planning your trip. Also, midweek departures may offer better deals than weekends.

Exploring all airports near Saint Louis and Seattle

Checking all the airports available in the area can give you more departure and arrival options for your trip.

  • Airports in Saint Louis: Saint Louis - Lambert is currently the only one operating.
  • Airports in Seattle: Seattle is served by 2 airports - Boeing Field, Lake Union.

Looking at expected traffic to the airport can help avoid surprises on departure day. On busy routes, flying from a quieter airport might also save you money.

Flights from Saint Louis - Lambert to Seattle - Tacoma

Plan your journey from Saint Louis to Seattle with ease

Use Jetcost to tailor your search — direct or connecting flights, round-trip or one-way, filtered by airline, price, travel time, or agency.

Other popular destinations

Exploring options in United States? These cities are trending: Las Vegas, Los Angeles, Miami, New York City, Orlando.

Flight availability can change quickly — refresh the results if you’ve been away from the page for a while.

Frequently Asked Questions

Frequently asked questions about flights from Saint Louis to Seattle.

How much does an airline ticket from Saint Louis to Seattle cost?

Flight prices can vary a lot depending on the period and destination. At the moment, this information is not available for flights from Saint Louis to Seattle.

How far is Saint Louis from Seattle?

Saint Louis is about 1705 mi from Seattle.

What are the airports in Seattle?

Seattle has 2 airports: Boeing Field, Lake Union.

What are the airports in Saint Louis?

Saint Louis has one airport: Saint Louis - Lambert.

What are the most popular cities in United States?

The most popular cities in United States according to our users' searches are: Las Vegas, Los Angeles, Miami, New York City, Orlando.

When should I book a flight from Saint Louis to Seattle?

The best time to book a flight from Saint Louis to Seattle is 1 month in advance, while the worst time is 15 weeks in advance.

What is the cheapest month to fly from Saint Louis to Seattle?

The cheapest month to fly from Saint Louis to Seattle is November.

What is the most expensive month to fly from Saint Louis to Seattle?

The most expensive month to fly from Saint Louis to Seattle is August.

What is the best day of the week to fly from Saint Louis to Seattle?

For flights from Saint Louis to Seattle Wednesday is on average the cheapest day to fly, while Wednesday is the most expensive day to fly.