HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Seattle to St. Louis (SEA - STL) from $113

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — STL
Jun 16 — Jun 231
From?
To?
Sun 6/16
Sun 6/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

The best prices from Seattle/Tacoma Intl to Lambert-St Louis are usually found in January or February, booked 71 days in advance, depart on a Tuesday or Sunday and return on a Thursday

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 June 11, 2024.

Popular in

July

Cheapest in

January

Round-trip from

$318

One-way from

$124
High demand for flights, 21% potential price rise
Search Deals
Best time to find cheap flights, 31% potential price drop
Search Deals
From Seattle/Tacoma Intl to Lambert-St Louis
Search Deals
One-way flight from Seattle/Tacoma Intl to Lambert-St Louis
Search Deals

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

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.

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

To save on the cost of your flight from Seattle to St. Louis, book at least 49 days before your planned departure. Booking around this time can save you about 49% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $296 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $319.

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

January can be a great time to fly to St. Louis from Seattle with a flight ticket averaging about $342. Cheapflights users have found deals in the month of January for as cheap as $155. The most expensive prices can be found in the month of July.

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

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 evening, which can drop the price by up to 28% versus a flight at noon.

Cheap Seattle to St. Louis flights in June & July 2024

Find cheap flight options from Seattle to St. Louis specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,020,828 searches. Prices were last updated on June 11, 2024.
Listed are some of the best fares we've found on flights departing from Seattle to St. Louis in 2024. Check back regularly for other flight deals.
Fri 6/2110:03 pmSEA - STL
1 stop10h 39mFrontier
Mon 6/248:22 pmSTL - SEA
1 stop14h 17mFrontier
Deal found 6/10$188
Sun 7/1410:59 pmSEA - STL
1 stop10h 23mFrontier
Sun 8/410:32 pmSTL - SEA
1 stop12h 08mFrontier
Deal found 6/10$199
Fri 7/199:46 pmSEA - STL
1 stop16h 52mFrontier
Mon 7/2912:41 pmSTL - SEA
1 stop8h 52mFrontier
Deal found 6/10$202
Sat 7/139:17 amSEA - STL
1 stop9h 45mFrontier
Tue 7/1610:32 pmSTL - SEA
2 stops16h 02mFrontier
Deal found 6/10$204
Thu 7/2510:59 pmSEA - STL
1 stop20h 32mFrontier
Tue 7/3010:32 pmSTL - SEA
2 stops16h 02mFrontier
Deal found 6/10$207
Fri 7/199:46 pmSEA - STL
1 stop16h 52mFrontier
Sun 8/410:32 pmSTL - SEA
1 stop12h 08mFrontier
Deal found 6/10$208
Tue 7/21:47 pmSEA - STL
2 stops19h 27mFrontier
Tue 7/97:49 pmSTL - SEA
2 stops18h 45mFrontier
Deal found 6/10$212
Fri 7/199:46 pmSEA - STL
1 stop16h 52mFrontier
Tue 7/3010:32 pmSTL - SEA
2 stops16h 02mFrontier
Deal found 6/10$213
Tue 7/1610:10 pmSEA - STL
1 stop14h 56mMultiple Airlines
Sun 8/410:32 pmSTL - SEA
1 stop12h 08mMultiple Airlines
Deal found 6/10$214

Seattle to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Seattle and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,020,828 searches. Data last updated June 11, 2024.
Listed are some of the best fares we've found on flights departing from Seattle to St. Louis in 2024. Check back regularly for other flight deals.
Sat 8/247:51 pmSEA - STL
1 stop12h 27mFrontier
Tue 8/2710:32 pmSTL - SEA
1 stop12h 05mFrontier
Deal found 6/10$173
Mon 9/2311:30 amSEA - STL
1 stop20h 48mFrontier
Sun 9/297:29 pmSTL - SEA
1 stop17h 19mFrontier
Deal found 6/9$178
Thu 8/110:59 pmSEA - STL
1 stop20h 32mFrontier
Mon 8/512:41 pmSTL - SEA
1 stop8h 52mFrontier
Deal found 6/9$179
Mon 8/2610:08 pmSEA - STL
1 stop11h 42mFrontier
Tue 9/310:32 pmSTL - SEA
1 stop12h 05mFrontier
Deal found 6/9$180
Wed 9/1811:30 amSEA - STL
1 stop20h 48mFrontier
Sun 9/227:29 pmSTL - SEA
1 stop17h 19mFrontier
Deal found 6/9$181
Fri 9/69:37 amSEA - STL
1 stop22h 00mFrontier
Sun 9/83:53 pmSTL - SEA
1 stop18h 44mFrontier
Deal found 6/8$182
Thu 9/197:51 pmSEA - STL
1 stop12h 27mFrontier
Sun 9/227:29 pmSTL - SEA
1 stop17h 19mFrontier
Deal found 6/9$183
Thu 8/110:59 pmSEA - STL
1 stop20h 32mFrontier
Mon 8/512:12 pmSTL - SEA
2 stops26h 22mFrontier
Deal found 6/9$184
Fri 6/2110:03 pmSEA - STL
1 stop10h 39mFrontier
Mon 6/248:22 pmSTL - SEA
1 stop14h 17mFrontier
Deal found 6/9$188

Seattle to St. Louis flights leaving soon

Find last-minute flight options from Seattle to St. Louis for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,020,828 searches. Data last updated June 11, 2024.
Check out these flights departing soon from Seattle to St. Louis. To prevent any unwanted surprises, users should verify their flight info before booking.
Fri 6/2110:03 pmSEA - STL
1 stop10h 39mFrontier
Mon 6/248:22 pmSTL - SEA
1 stop14h 17mFrontier
Deal found 6/9$188
Thu 6/209:42 pmSEA - STL
1 stop12h 12mFrontier
Mon 6/248:22 pmSTL - SEA
1 stop14h 17mFrontier
Deal found 6/8$221
Fri 6/2110:03 pmSEA - STL
1 stop10h 39mMultiple Airlines
Mon 7/12:41 pmSTL - SEA
1 stop20h 18mMultiple Airlines
Deal found 6/9$228
Thu 6/209:42 pmSEA - STL
1 stop12h 12mFrontier
Fri 6/217:29 pmSTL - SEA
2 stops21h 07mFrontier
Deal found 6/8$229
Fri 6/2110:03 pmSEA - STL
1 stop10h 39mFrontier
Mon 6/247:29 pmSTL - SEA
2 stops19h 18mFrontier
Deal found 6/9$233
Thu 6/209:42 pmSEA - STL
1 stop12h 12mMultiple Airlines
Fri 6/217:30 pmSTL - SEA
1 stop15h 32mMultiple Airlines
Deal found 6/8$257
Sat 6/1510:26 pmSEA - STL
1 stop14h 11mFrontier
Thu 6/207:29 pmSTL - SEA
1 stop15h 08mFrontier
Deal found 6/10$266
Fri 6/1412:20 amSEA - STL
1 stop6h 34mAmerican Airlines
Wed 6/197:47 pmSTL - SEA
1 stop7h 00mAmerican Airlines
Deal found 6/10$276
Fri 6/1410:03 pmSEA - STL
1 stop10h 39mMultiple Airlines
Sun 6/166:30 amSTL - SEA
1 stop27h 36mMultiple Airlines
Deal found 6/9$279

One-way flights to St. Louis from Seattle

Search for one-way flight options from Seattle to St. Louis. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,020,828 searches. Data last updated June 11, 2024.
Users in need of a one-way flight from Seattle to St. Louis can choose from these deals. Those seeking round-trip flights from Seattle to St. Louis should utilize the search form at the the top of the page.
Tue 6/259:41 pmSEA - STL
1 stop13h 24mSpirit Airlines
Deal found 6/9$113
Fri 6/1410:03 pmSEA - STL
1 stop10h 39mFrontier
Deal found 6/9$114
Fri 6/1410:03 pmSEA - STL
1 stop10h 39mFrontier
Deal found 6/9$115
Thu 6/279:42 pmSEA - STL
1 stop12h 12mFrontier
Deal found 6/9$116
Tue 9/312:35 amSEA - STL
1 stop7h 58mDelta
Deal found 6/8$124
Sat 7/139:17 amSEA - STL
1 stop9h 45mFrontier
Deal found 6/9$128
Mon 6/1710:03 pmSEA - STL
1 stop10h 39mFrontier
Deal found 6/9$132
Wed 7/35:10 amSEA - STL
1 stop10h 08mAmerican Airlines
Deal found 6/10$133
Thu 6/1312:20 amSEA - STL
1 stop6h 34mAmerican Airlines
Deal found 6/9$138

Find flights from Seattle to St. Louis within your budget

Customize your flight search to find flights from Seattle to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,020,828 searches. Data last updated June 11, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$231 - $402

Route

Depart

Return

Price

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Wed 7/17

2 stops29h 20m

Lambert-St Louis

Mon 7/29

1 stop8h 52m

$231

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Tue 7/2

1 stop11h 17m

Lambert-St Louis

Tue 7/9

2 stops18h 45m

$232

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Fri 9/6

1 stop13h 14m

Lambert-St Louis

Sun 9/8

Nonstop4h 24m

$234

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Wed 7/31

1 stop6h 10m

Lambert-St Louis

Thu 8/8

1 stop7h 27m

$237

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Mon 8/19

1 stop6h 43m

Lambert-St Louis

Sun 8/25

1 stop8h 49m

$246

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Tue 7/16

1 stop14h 56m

Lambert-St Louis

Fri 8/2

1 stop10h 33m

$261

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Mon 8/26

Nonstop3h 56m

Lambert-St Louis

Tue 9/3

Nonstop4h 26m

$277

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Wed 6/19

1 stop5h 31m

Lambert-St Louis

Thu 6/20

1 stop9h 02m

$301

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Sun 6/23

1 stop6h 18m

Lambert-St Louis

Sun 6/30

1 stop16h 23m

$402

Flights are sorted by cheapest first

Deals found on 6/10

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 May 31, 2024.
The best time to book flights from Seattle to St. Louis is 71 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to St. Louis. Price data was last updated on June 9, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to St. Louis flight should consider departing on Friday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Seattle to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in St. Louis by month

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

STL

Temperature

32 - 80.6 °F

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated June 11, 2024.
Get a feel of what it's like to fly with American Airlines, Frontier and Alaska Airlines from Seattle to St. Louis by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,267 reviews

Comfort

7.9

Entertainment

7.3

Overall

8.1

Crew

8.6

Food

7.3

Boarding

8.2

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

Alaska Airlines
8.1
Very good
9,267 reviews
Alaska Airlines
8.1
Very good
9,267 reviews

Comfort

7.9

Entertainment

7.3

Overall

8.1

Crew

8.6

Food

7.3

Boarding

8.2

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

Delta
8.0
Very good
10,277 reviews
Alaska Airlines
8.1
Very good
9,267 reviews

Comfort

7.9

Entertainment

7.3

Overall

8.1

Crew

8.6

Food

7.3

Boarding

8.2

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

United Airlines
7.4
Good
10,647 reviews
Alaska Airlines
8.1
Very good
9,267 reviews

Comfort

7.9

Entertainment

7.3

Overall

8.1

Crew

8.6

Food

7.3

Boarding

8.2

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

American Airlines
7.3
Good
14,138 reviews
Alaska Airlines
8.1
Very good
9,267 reviews

Comfort

7.9

Entertainment

7.3

Overall

8.1

Crew

8.6

Food

7.3

Boarding

8.2

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

Sun Country Air
7.2
Good
585 reviews
Alaska Airlines
8.1
Very good
9,267 reviews

Comfort

7.9

Entertainment

7.3

Overall

8.1

Crew

8.6

Food

7.3

Boarding

8.2

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

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.

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

    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 6 flights from Seattle/Tacoma Intl to St. Louis per day from 6 airlines.

  • Can I find flights from Seattle to St. Louis for under $300 on Cheapflights?

    Yes, there are multiple flights from Seattle to St. Louis for under $300. The cheapest flight booked recently is on Frontier for just $231, but on average you can expect to pay $242.

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

    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 $408.

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

    There are currently 20+ open flights from Seattle to St. Louis 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: Wednesday, Friday.

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

    The Seattle/Tacoma Intl to Lambert-St Louis flight path was viewed by 28 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    On average 4 flights depart from Seattle to St. Louis per day.
    Morning (6am - Noon) - 50% of flight departures
    Evening (6pm - Midnight) - 50% of flight departures

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

    Frontier, Delta, and American Airlines can get you from Seattle to St. Louis in just under 6h 10m. Your travel time can differ by up to 23h 10m. Airlines will cover a distance of 1714 mi. This flight may include one or multiple stops.

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

    Cheapflights users have booked flights from Seattle to St. Louis round-trip from $231. Other airlines that can offer you cheap pricing are Delta, from $237, and American Airlines, from $246. These flights start at 32% lower than the current average price 3 months from now.

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

    $113 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 $114 and $124, respectively.

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

    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: American Airlines (85%), Alaska Airlines (85%), Qatar Airways (85%).

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

    The cheapest flight price from Seattle to St. Louis is $118. On average you can expect to pay $392. The most popular route, (Seattle/Tacoma Intl - Lambert-St Louis), can usually be booked for $197.

  • What does SEA to STL mean?

    SEA stands for Seattle/Tacoma Intl Airport, while STL stands for Lambert-St Louis Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • 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.

  • How recently were the Seattle to St. Louis flight deals updated?

    The Seattle to St. Louis flight deals you see on this page were last updated on 6/10.

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Seattle to St. Louis (average of $318). Flying from Seattle to St. Louis in July is currently the most expensive (average of $365). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.

Seattle to Kansas City flights
Portland to Kansas City flights
Portland to St. Louis flights
Seattle to Springfield flights
Portland to Springfield flights
Spokane to St. Louis flights
Spokane to Kansas City flights
Spokane to Springfield flights
Bellingham to Kansas City flights
Seattle to Columbia flights
Pasco to Kansas City flights
Pasco to St. Louis flights
Seattle to Joplin flights
Pullman to St. Louis flights
Portland to Columbia flights
Portland to Joplin flights
Pasco to Springfield flights
Pullman to Kansas City flights
Yakima to Springfield flights
Seattle to Quincy flights
Walla Walla to St. Louis flights
Seattle to Branson flights
Portland to Branson flights
Bellingham to St. Louis flights

Top 6 airlines flying from Seattle to St. Louis

Discover the top 6 airlines 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 3,020,828 searches. Data last updated June 11, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$124Average$246FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$127Average$211FlexibilityNo cancel feeOn-time65%
DeltaCheapest$153Average$267FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$157Average$386FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$194Average$316FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$196Average$369FlexibilityNo cancel feeOn-time75%
Austin to New Orleans flights
USA to Switzerland flights
Denver to Hawaii flights
Las Vegas to San Diego flights
Sacramento to Los Angeles flights
Los Angeles to Tokyo flights
Salt Lake City to Phoenix flights
New York to Salt Lake City flights
Houston to San Francisco flights
Boston to Montreal flights
Sacramento to Las Vegas flights
Seattle to London Stansted Airport 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.
First Class
Business Class
Prem Econ Class
Economy Class

Hourly flight availability from Seattle to St. Louis

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 June 11, 2024.
1%of flight departuresEarly morningMidnight to 6 am
57%of flight departuresMorning6 am to noon
42%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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 June 11, 2024.
Sunday9daily flights
Monday8daily flights
Tuesday4daily flights
Wednesday8daily flights
Thursday4daily flights
Friday8daily flights
Saturday3daily flights

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Gaziantep
Flights to Miyakojima Hirara
Flights to Figari-Sud Corse
Flights to Mason City
Flights to Komatsu
Flights to Sendai
Flights to Rhinelander Oneida County
Flights to Constanţa Mihail Kogalniceanu
Flights to Brainerd Crow Wing County
Flights to Reus
Flights to Virac
Flights to Neiva La Marguita
Flights to Pellston Emmet County
Flights to Urumqi
Flights to Bastia Poretta
Flights to Samos
Flights to Hyannis Barnstable
Flights to Provincetown
Flights to Alghero-Fertilia
Flights to Laayoune Hassan I
Flights to Devils Lake
Flights to Vava'u Lupepau'U
Flights to Hakodate
Flights to Edremit/Korfez
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines