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

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The best prices from Seattle to Lambert-St Louis Intl are usually found in February or October, booked 27 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

How to find the cheapest flight from
Seattle (SEA) to Lambert-St Louis Intl (STL)

SEA - STL
Price
$263 - $402
STL
Temperature
44.6 - 89.6 °F
STL
Rainfall
2.2 - 5.1 inches

Popular in

December

High demand for flights, 19% potential price rise

Cheapest in

February

Best time to find cheap flights, 19% potential price drop

Round-trip from

$263

From Seattle to Lambert-St Louis Intl

One-way from

$123

One-way flight from Seattle to Lambert-St Louis Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Seattle to Lambert-St Louis Intl?

Flights from Seattle to Lambert-St Louis Intl are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Lambert-St Louis Intl.

How far in advance should I book a flight from Seattle to Lambert-St Louis Intl?

Users have found that booking a flight from Seattle to Lambert-St Louis Intl at least 61 days early can save you up to 27% on average compared to booking a flight this week. If booking 61 days before your flight isn’t an option for you, users have found flights from Seattle to Lambert-St Louis Intl for as little as $164 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $181 for flights departing within the next 3 days.

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

It’s optimal to fly from Seattle to Lambert-St Louis Intl at noon. By choosing this option you can save up to 22% on the cost of your flight, compared to a flight in the morning.

Cheap flights from Seattle to Lambert-St Louis Intl in October, November 2020

The best prices found for SEA to STL flights for October, November
26 Oct - 31 Oct
$153pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
19 Nov - 26 Nov
$154pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
25 Oct - 31 Oct
$163pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle to Lambert-St Louis Intl 2020 flight deals

Cheap flights to Lambert-St Louis Intl from Seattle found for this year
26 Oct - 31 Oct
$153pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
19 Nov - 26 Nov
$154pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
25 Oct - 31 Oct
$163pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl

Non-stop flights to Lambert-St Louis Intl from Seattle

Save time with Seattle to Lambert-St Louis Intl direct flight deals
30 Dec - 6 Jan
$237pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
11 Dec - 15 Dec
$247pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
4 Nov - 14 Nov
$257pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Lambert-St Louis Intl

Late deals on round-trip flights to Lambert-St Louis Intl from Seattle, departing today and this week
30 Oct - 13 Nov
$175pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
1 Nov - 15 Nov
$178pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
29 Oct - 1 Nov
$188pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Lambert-St Louis Intl from Seattle

The cheapest one-way flights from Seattle to Lambert-St Louis Intl
7:45 pm - 4:40 am
Delta
1 Stop
6h 55m
SEA - STL
Delta
$123
Delta
8:00 am - 5:07 am
Frontier
2 Stops
19h 07m
SEA - STL
Frontier
$129
FlightNetwork
5:30 am - 12:04 pm
Sun Country Air
1 Stop
28h 34m
SEA - STL
Sun Country Air
$132
KAYAK

Related info for your journey

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

Flight FAQs

From Seattle to Lambert-St Louis Intl

Are flight prices decreasing from Seattle to St Louis due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Seattle and St Louis for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Seattle/Tacoma Intl to Lambert-St Louis to control the spread of COVID-19?

Alaska Airlines, Southwest, and Delta are some of the many airlines that have implemented additional safety measures to control the spread of COVID-19. Some of the new policies that have been implemented to accommodate travelers flying from Seattle/Tacoma Intl to Lambert-St Louis are improved sanitation, HEPA filters, mask requirements, social distance seating (for a limited time), and pre-flight testing for antibodies and symptoms. Policies will vary by airline.

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

Alaska Airlines, Delta, and Frontier 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.

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

Yes, there are multiple flights from Seattle to Lambert-St Louis Intl for under $200. The cheapest flight booked recently is on Multiple Airlines for just $154, but on average you can expect to pay $197.

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

Cheapflights has at least 20 direct flights from Seattle to Lambert-St Louis Intl under $300. A good price for a nonstop flight from Seattle to Lambert-St Louis Intl is less than $316.

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

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

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

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

How many flights depart from Seattle to Lambert-St Louis Intl on average per day?

1 flight departure from Seattle/Tacoma Intl to Lambert-St Louis per day on average.
Morning (6am - Noon) - 100% of flight departures

Does it rain more in Seattle or St Louis?

When traveling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Seattle is roughly greater than that of St Louis. You can assume this to be the case over the next 19 days.

Is Seattle weather warmer or cooler than St Louis?

Temperatures around the 90 °F's can be experienced in July. The weather in St Louis is hotter than in Seattle. Plan for potential changes in flight availability as peak weather approaches in this location.

How long is the flight from Seattle to Lambert-St Louis Intl?

For as low as $224, American Airlines can have you in Lambert-St Louis Intl from Seattle in 5h 28m. The distance from Seattle to Lambert-St Louis Intl is about 1714 mi. This flight may include one or multiple stops.

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

According to our current data, Frontier ($175), American Airlines ($202), and United Airlines ($212) offers the cheapest pricing from Seattle to Lambert-St Louis Intl. Frontier is currently priced 46% below the average price you’ll pay for this route.

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

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $69. However, be on the lookout for offers from United Airlines and Alaska Airlines, as they are both options that can get you from Seattle to Lambert-St Louis Intl for a low price.

Alternative routes for Seattle to Lambert-St Louis Intl

Destination information for Lambert-St Louis Intl

Things to know before you go. Useful info for your trip from Seattle to Lambert-St Louis Intl
Average temperature for October in Lambert-St Louis Intl
71.6 °F
Avg rainfall for October in Lambert-St Louis Intl
2.8 ″

Airports servicing Seattle

Airports servicing St. Louis

Hourly flight availability from Seattle to Lambert-St Louis Intl

Morning 6 AM to noon 100% of SEA to STL departures
Early morning Midnight to 6 AM 0% of SEA to STL departures
Afternoon Noon to 6 PM 0% of SEA to STL departures
Evening 6 PM to midnight 0% of SEA to STL departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Seattle to Lambert-St Louis Intl
Sunday
1 daily flight
Monday
2 daily flights
Tuesday
2 daily flights
Wednesday
2 daily flights
Thursday
2 daily flights
Friday
2 daily flights
Saturday
2 daily flights
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