Q: Can I fly back to Seattle/Tacoma Intl from Lambert-St Louis?

Returning to Seattle/Tacoma Intl from Lambert-St Louis COVID-19 testing requirements Visitors from Lambert-St Louis are not required to present a negative COVID-19 PCR test or antigen result upon entering Seattle/Tacoma Intl. Quarantine requirements Visitors from Lambert-St Louis are not required to quarantine after entering Seattle/Tacoma Intl.

Question 1

What days are nonstop flights available from Seattle to St. Louis?

Accepted Answer

You can find nonstop flights on the following days: Friday.

Question 2

How popular is this Seattle to St. Louis flight route?

Accepted Answer

The Seattle/Tacoma Intl to Lambert-St Louis flight path was viewed by 37 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

Question 3

How many flights depart from Seattle to St. Louis on average per day?

Accepted Answer

On average 7 flights depart from Seattle to St. Louis per day.
Morning (6am - Noon) - 43% of flight departures
Evening (6pm - Midnight) - 57% of flight departures

Question 4

How long is the flight from Seattle to St. Louis?

Accepted Answer

Spirit Airlines and Frontier can get you from Seattle to St. Louis in just under 6h 19m. Your travel time can differ by up to 5h 23m. Airlines will cover a distance of 1714 mi. This flight may include one or multiple stops.

Question 5

What are the cheapest airlines flying from Seattle to St. Louis round-trip?

Accepted Answer

Cheapflights users have booked flights from Seattle to St. Louis round-trip from $128. Another airline that can offer you cheap pricing is Frontier. These flights start at 66% lower than the current average price 3 months from now.

Question 6

What are the cheapest airlines to fly from Seattle to St. Louis one-way?

Accepted Answer

$60 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Frontier and Delta, with prices starting from $86 and $119, respectively.

Question 7

Can I fly to Lambert-St Louis from Seattle/Tacoma Intl right now?

Accepted Answer

Information is based on travel restrictions for travel to Lambert-St Louis within the United States

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Lambert-St Louis.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl are not required to present a negative COVID-19 PCR test or antigen result upon entering Lambert-St Louis.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Lambert-St Louis.

Question 8

Can I fly back to Seattle/Tacoma Intl from Lambert-St Louis?

Accepted Answer

Returning to Seattle/Tacoma Intl from Lambert-St Louis

COVID-19 testing requirements
Visitors from Lambert-St Louis are not required to present a negative COVID-19 PCR test or antigen result upon entering Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Seattle/Tacoma Intl.

Question 9

What are the most popular airlines that fly from Seattle to St. Louis?

Accepted Answer

American Airlines, Alaska Airlines and Delta are the most popular airlines when flying from Seattle to St. Louis.

Question 10

What are the cheapest flights from Seattle to St. Louis?

Accepted Answer

The cheapest flight price from Seattle to St. Louis is $148. On average you can expect to pay $732. The most popular route, (Seattle/Tacoma Intl - Lambert-St Louis), can usually be booked for $152.

Question 11

What are the most reliable airlines from Seattle to St. Louis?

Accepted Answer

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to St. Louis on time: Southwest (94%), Singapore Airlines (89%), Alaska Airlines (86%).

Question 12

Can I find flights from Seattle to St. Louis for under $200 on Cheapflights?

Accepted Answer

Yes, there are multiple flights from Seattle to St. Louis for under $200. The cheapest flight booked recently is on Spirit Airlines for just $128, but on average you can expect to pay $149.

Question 13

Are there nonstop flights from Seattle to St. Louis for under $300 on Cheapflights?

Accepted Answer

Cheapflights has at least 20 direct flights from Seattle to St. Louis under $300. A good price for a nonstop flight from Seattle to St. Louis is less than $397.

Question 14

Are there last-minute flights available from Seattle to St. Louis for under $200?

Accepted Answer

There are currently 20+ open flights from Seattle to St. Louis within the next 7 days for less than $200.

Question 15

What airports do I use to fly from Seattle to St. Louis?

Accepted Answer

If you book a flight from Seattle to St. Louis, you will be flying from Seattle/Tacoma Intl to Lambert-St Louis. Flights to Lambert-St Louis (STL) from Seattle/Tacoma Intl (SEA) take 3h 48m for a nonstop flight. There are 4 flights from Seattle/Tacoma Intl to St. Louis per day from 8 airlines.

Question 16

Which airlines flying from Seattle/Tacoma Intl to Lambert-St Louis have flexible cancellations due to COVID-19?

Accepted Answer

Alaska Airlines, American Airlines, and Delta are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Question 17

What is the cheapest day to fly round-trip from Seattle to St. Louis?

Accepted Answer

Flying to your destination on a Thursday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to St. Louis. Check prices with Cheapflights to find a great deal for your trip.

Question 18

How far in advance should I book a flight from Seattle to St. Louis?

Accepted Answer

To save on the cost of your flight from Seattle to St. Louis, book at least 44 days before your planned departure. Booking around this time can save you about 41% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $442 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $530.

Question 19

What is the cheapest month to fly from Seattle to St. Louis?

Accepted Answer

October can be a great time to fly to St. Louis from Seattle with a flight ticket averaging about $384. Cheapflights users have found deals in the month of October for as cheap as $197. The most expensive prices can be found in the month of June.

Question 20

When is the cheapest time to fly from Seattle to St. Louis (SEA - STL)?

Accepted Answer

When flying from Seattle to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 16% versus a flight in the afternoon.

Question 21

Accepted Answer

One of the most popular airlines traveling from Seattle to St. Louis is Frontier. Flights from Frontier traveling this route typically cost $377.20 RT. This price is typically 44% cheaper than other airlines that offer Seattle to St. Louis flights. When booking this route, the cheapest RT price found was $157. Seattle/Tacoma Intl Airport is the most common Seattle airport to take off from when flying to St. Louis. Lambert-St Louis Airport is the most popular arrival airport in St. Louis. When flying from Seattle to St. Louis, Frontier flights are 27% more popular than any other airline flying that same route.

Question 22

Accepted Answer

If you’re traveling from Seattle to St. Louis, one of the more common airlines traveling that route is Spirit Airlines. Seattle to St. Louis flights are typically 21% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $615.20 RT. The cheapest Spirit Airlines flight found for this route was $209. When traveling from Seattle to St. Louis on Spirit Airlines, the most popular airport to depart from is Seattle/Tacoma Intl Airport and the most popular airport to arrive at is Lambert-St Louis Airport. When flying from Seattle to St. Louis, Spirit Airlines flights are 19% more popular than any other airline flying that same route.

Popular in	June	High demand for flights, 35% potential price rise
Cheapest in	October	Best time to find cheap flights, 38% potential price drop
Round-trip from	$237	From Seattle/Tacoma Intl to Lambert-St Louis
One-way from	$119	One-way flight from Seattle/Tacoma Intl to Lambert-St Louis

Airline	Cheapest	Average	Flexibility	On-time	COVID-19 safety
Juneyao Airlines	Cheapest$14	Average$23	FlexibilityNo cancel fee	On-time66%	COVID-19 safety	Search Juneyao Airlines flights
Frontier	Cheapest$108	Average$325	FlexibilityNo cancel fee	On-time62%	COVID-19 safety	Search Frontier flights
Spirit Airlines	Cheapest$126	Average$246	FlexibilityNo cancel fee	On-time65%	COVID-19 safety	Search Spirit Airlines flights
Alaska Airlines	Cheapest$157	Average$377	FlexibilityNo cancel fee	On-time75%	COVID-19 safety	Search Alaska Airlines flights
Delta	Cheapest$195	Average$473	FlexibilityNo cancel fee	On-timeN/A	COVID-19 safety	Search Delta flights
United Airlines	Cheapest$202	Average$447	FlexibilityNo cancel fee	On-time69%	COVID-19 safety	Search United Airlines flights
American Airlines	Cheapest$209	Average$615	FlexibilityNo cancel fee	On-time71%	COVID-19 safety	Search American Airlines flights

1%of flight departures	Early morningMidnight to 6 am
17%of flight departures	Morning6 am to noon
82%of flight departures	AfternoonNoon to 6 pm
0%of flight departures	Evening6 pm to midnight

Sunday	2daily flights
Monday	6daily flights
Tuesday	7daily flights
Wednesday	6daily flights
Thursday	3daily flights
Friday	5daily flights
Saturday	1daily flight

Cheap flights from Seattle to St. Louis (SEA - STL)

The best prices from Seattle/Tacoma Intl to Lambert-St Louis are usually found in October or January, booked 44 days in advance, depart on a Saturday or Wednesday and return on a Tuesday

How to find the cheapest flight from Seattle (SEA) to St. Louis (STL)

All the information you need to plan the best SEA to STL flight in 2022: compare Seattle to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.

What is the cheapest day to fly round-trip from Seattle to St. Louis?

How far in advance should I book a flight from Seattle to St. Louis?

What is the cheapest month to fly from Seattle to St. Louis?

When is the cheapest time to fly from Seattle to St. Louis (SEA - STL)?

Cheap flights from Seattle to St. Louis in September, October 2022

The best prices found for SEA to STL flights for September, October

Seattle to St. Louis 2022 flight deals

Cheap flights to St. Louis from Seattle found for this year

Cheap Frontier flights from Seattle to St. Louis

Cheap Spirit Airlines flights from Seattle to St. Louis

Non-stop flights to St. Louis from Seattle

Save time with Seattle to St. Louis direct flight deals

Last minute flights from Seattle to St. Louis

Late deals on return flights to St. Louis from Seattle, departing today and this week

One-way flights to St. Louis from Seattle

The cheapest one-way flights from Seattle to St. Louis

Related info for your journey

Useful info, stats and facts about Seattle to St. Louis flights.

What airports do I use to fly from Seattle to St. Louis?

Which airlines flying from Seattle/Tacoma Intl to Lambert-St Louis have flexible cancellations due to COVID-19?

Can I find flights from Seattle to St. Louis for under $200 on Cheapflights?

Are there nonstop flights from Seattle to St. Louis for under $300 on Cheapflights?

Are there last-minute flights available from Seattle to St. Louis for under $200?

What days are nonstop flights available from Seattle to St. Louis?

How popular is this Seattle to St. Louis flight route?

How many flights depart from Seattle to St. Louis on average per day?

How long is the flight from Seattle to St. Louis?

What are the cheapest airlines flying from Seattle to St. Louis round-trip?

What are the cheapest airlines to fly from Seattle to St. Louis one-way?

What are the most popular airlines that fly from Seattle to St. Louis?

What are the most reliable airlines from Seattle to St. Louis?

What are the cheapest flights from Seattle to St. Louis?

Other flights from Seattle

Other flights to St. Louis

Flights to St. Louis from Seattle

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COVID Restrictions

Can I fly to Lambert-St Louis from Seattle/Tacoma Intl right now?

Can I fly back to Seattle/Tacoma Intl from Lambert-St Louis?

Alternative routes for Seattle to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Seattle to St. Louis

The chart below displays the airlines Cheapflights users traveling from Seattle to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.

Popular flight searches

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Hourly flight availability from Seattle to St. Louis

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Weekly flight availability from Seattle to St. Louis

See how many times per day planes take to the skies headed from Seattle to St. Louis