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Cheap flights from Seattle to St. Louis

SEA — STL
28 Jul — 4 Aug1
1 adult
Sun 28/7
Sun 4/8

Cheap flight deals from Seattle to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 23 July 2024.

Round-trip from

C$ 502

Popular in

June

Cheapest in

January

Average price

C$ 592
From Seattle/Tacoma Intl to Lambert-St Louis
High demand for flights, 23% potential price rise
Best time to find cheap flights, 31% potential price drop
Average for round-trip flights in July 2024

Travel insights for flights from Seattle to St. Louis

Get recent, data-driven insights about flights from Seattle to St. Louis including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to St. Louis. Price data was last updated on 19 July 2024.

The price you pay for your flight from Seattle to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 71 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to St. Louis?

Currently, March is the cheapest month in which you can book a flight from Seattle to St. Louis (average of C$ 151). Flying from Seattle to St. Louis in June is currently the most expensive (average of C$ 309). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to STL?

Find hourly flight availability from Seattle to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 23 July 2024.

A simple way to save on the total cost of your ticket is to fly from Seattle to St. Louis at noon. If you’re flexible enough to do this you can expect to save up to 53% on your trip compared to booking a flight in the morning.

Weekly flight availability from Seattle to St. Louis

Explore weekly flight availability from Seattle to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 23 July 2024.

The most flights from SEA to STL are scheduled on a Sunday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Related info for your journey

Find useful and relevant information for your journey from Seattle to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How popular is this Seattle to St. Louis flight route?

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

    The top 3 most reliable airlines when flying from Seattle to St. Louis are Alaska Airlines (83%), Air Tahiti Nui (81%) and American Airlines (78%).

  • What does SEA to STL mean?

    Great question - SEA to STL just means Seattle/Tacoma Intl Airport to Lambert-St Louis Airport. Now you’ll know what these unique codes when you look for flights!

  • Can I find deals for flights from Seattle to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Seattle to St. Louis that include hotel bookings?

    Yes. In addition to deals on Seattle to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to St. Louis.

  • Can I find deals for business class flights from Seattle to St. Louis?

    Yes. Cheapflights offers flight deals from Seattle to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Seattle to St. Louis that allow pets onboard?

    Many airlines flying from Seattle to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to St. Louis?

    Yes, you can often find last-minute deals on Seattle to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • What is the cheapest month to book a flight from Seattle to St. Louis?

    Currently, March is the cheapest month in which you can book a flight from Seattle to St. Louis (average of C$ 151). Flying from Seattle to St. Louis in June is currently the most expensive (average of C$ 309). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Seattle to St. Louis

Discover the top airline that operate flights from Seattle to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 424,310 searches. Data last updated 23 July 2024.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 271AverageC$ 458FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Search flights from Seattle to St. Louis by cabin class

Find flights from Seattle to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to St. Louis?

Cheapflights helps you search for flights from Seattle to St. Louis via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Seattle to St. Louis?

Cheapflights helps you find that perfect flight to St. Louis from Seattle by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Seattle to St. Louis with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to St. Louis flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Seattle to St. Louis become cheaper?

Yes! Start tracking prices for Seattle to St. Louis flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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