Cheap flights from Seattle to St. Louis (SEA - STL) from $82

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 4/26. 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
Apr 2 — Apr 91

The best prices from Seattle/Tacoma Intl to Lambert-St Louis are usually found in September or October, booked 50 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 March 28, 2024.

Popular in

June

Cheapest in

September

Round-trip from

$323

One-way from

$119
High demand for flights, 23% potential price rise
Best time to find cheap flights, 22% potential price drop
From Seattle/Tacoma Intl to Lambert-St Louis
One-way flight from Seattle/Tacoma Intl to Lambert-St Louis

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

Flying to your destination on a Sunday 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 51 days before your planned departure. Booking around this time can save you about 105% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $344 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $460.

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

September can be a great time to fly to St. Louis from Seattle with a flight ticket averaging about $381. Cheapflights users have found deals in the month of September for as cheap as $144. The most expensive prices can be found in the month of June.

When is the cheapest time to fly from Seattle to St. Louis (SEA - 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 26% versus a flight at noon.

Cheap Delta flights from Seattle to St. Louis

Explore cheap flight options specifically provided by Delta for the route between Seattle and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,238,496 searches. Data last updated March 28, 2024.
Take a peek at the cheapest Delta flights we've detected traveling from Seattle to St. Louis. Make sure to check back often as deals are often changing.
Thu 5/305:09 pmSEA - STL
1 stop5h 37mDelta
Mon 6/32:28 pmSTL - SEA
1 stop5h 58mDelta
Deal found 3/28$216
Wed 4/1012:35 amSEA - STL
1 stop8h 16mDelta
Tue 4/165:30 pmSTL - SEA
1 stop7h 08mDelta
Deal found 3/27$268
Sat 4/2712:35 amSEA - STL
1 stop8h 16mDelta
Mon 4/296:50 pmSTL - SEA
1 stop7h 44mDelta
Deal found 3/28$287
Fri 5/3112:40 amSEA - STL
1 stop8h 30mDelta
Wed 6/510:20 amSTL - SEA
1 stop8h 40mDelta
Deal found 3/28$315
Wed 4/1012:35 amSEA - STL
1 stop8h 16mDelta
Mon 4/156:50 pmSTL - SEA
1 stop7h 44mDelta
Deal found 3/27$328
Tue 4/23:28 pmSEA - STL
1 stop6h 04mDelta
Mon 4/156:50 pmSTL - SEA
1 stop7h 44mDelta
Deal found 3/28$448
Sat 4/63:28 pmSEA - STL
1 stop6h 04mDelta
Mon 4/86:11 amSTL - SEA
1 stop8h 10mDelta
Deal found 3/27$742
  • One of the most popular airlines traveling from Seattle to St. Louis is Delta. Flights from Delta traveling this route typically cost $366.80 RT. This price is typically 59% cheaper than other airlines that offer Seattle to St. Louis flights. When booking this route, the cheapest RT price found was $171. 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, Delta flights are 13% more popular than any other airline flying that same route.

Cheap Spirit Airlines flights from Seattle to St. Louis

Explore cheap flight options specifically provided by Spirit Airlines for the route between Seattle and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,238,496 searches. Data last updated March 28, 2024.
Some of the lowest-priced Spirit Airlines flights we've found at this time heading from Seattle to St. Louis. Deals are refreshing constantly so come back soon for more options.
Thu 4/119:19 pmSEA - STL
1 stop14h 39mSpirit Airlines
Tue 4/162:35 pmSTL - SEA
3 stops31h 54mSpirit Airlines
Deal found 3/27$275
Wed 4/249:38 amSEA - STL
3 stops29h 56mSpirit Airlines
Wed 5/111:33 amSTL - SEA
1 stop10h 56mSpirit Airlines
Deal found 3/27$301
Thu 4/119:19 pmSEA - STL
1 stop14h 39mSpirit Airlines
Tue 4/1610:34 amSTL - SEA
2 stops24h 11mSpirit Airlines
Deal found 3/27$322
Fri 4/198:57 pmSEA - STL
3 stops18h 37mSpirit Airlines
Mon 4/225:02 pmSTL - SEA
1 stop17h 43mSpirit Airlines
Deal found 3/27$335
Tue 4/29:41 amSEA - STL
2 stops32h 32mSpirit Airlines
Mon 4/155:02 pmSTL - SEA
1 stop17h 43mSpirit Airlines
Deal found 3/27$516
Tue 4/29:41 amSEA - STL
3 stops32h 32mSpirit Airlines
Mon 4/155:02 pmSTL - SEA
1 stop17h 43mSpirit Airlines
Deal found 3/27$541
Thu 4/49:41 amSEA - STL
2 stops22h 26mSpirit Airlines
Wed 4/1011:33 amSTL - SEA
1 stop23h 12mSpirit Airlines
Deal found 3/28$544
Fri 4/59:41 amSEA - STL
2 stops23h 02mSpirit Airlines
Tue 4/92:25 pmSTL - SEA
2 stops20h 20mSpirit Airlines
Deal found 3/27$570
Thu 4/49:41 amSEA - STL
2 stops22h 26mSpirit Airlines
Tue 4/92:25 pmSTL - SEA
2 stops20h 20mSpirit Airlines
Deal found 3/27$574
  • 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 58% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $476.40 RT. The cheapest Spirit Airlines flight found for this route was $157. 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 1% more popular than any other airline flying that same route.

Cheap Seattle to St. Louis flights in March & April 2024

Find cheap flight options from Seattle to St. Louis specifically for the months of March and April 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,238,496 searches. Prices were last updated on March 28, 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.
Tue 4/169:35 pmSEA - STL
1 stop10h 12mMultiple Airlines
Tue 4/237:51 pmSTL - SEA
1 stop14h 54mMultiple Airlines
Deal found 3/27$164
Mon 4/159:00 pmSEA - STL
1 stop11h 18mFrontier
Thu 4/1810:56 pmSTL - SEA
1 stop22h 34mFrontier
Deal found 3/26$165
Wed 4/245:58 pmSEA - STL
1 stop14h 40mFrontier
Wed 5/17:51 pmSTL - SEA
1 stop22h 40mFrontier
Deal found 3/27$175
Sat 4/209:06 pmSEA - STL
1 stop15h 23mMultiple Airlines
Tue 4/237:51 pmSTL - SEA
1 stop14h 54mMultiple Airlines
Deal found 3/27$178
Mon 4/229:00 pmSEA - STL
1 stop11h 18mFrontier
Mon 4/299:53 pmSTL - SEA
1 stop13h 51mFrontier
Deal found 3/28$180
Mon 4/159:00 pmSEA - STL
1 stop11h 18mMultiple Airlines
Mon 4/225:02 pmSTL - SEA
1 stop17h 43mMultiple Airlines
Deal found 3/26$181
Thu 4/119:19 pmSEA - STL
1 stop14h 39mMultiple Airlines
Tue 4/164:50 pmSTL - SEA
1 stop26h 08mMultiple Airlines
Deal found 3/27$184
Thu 4/119:19 pmSEA - STL
1 stop14h 39mMultiple Airlines
Thu 4/1810:56 pmSTL - SEA
1 stop22h 34mMultiple Airlines
Deal found 3/27$185
Sat 4/139:32 pmSEA - STL
1 stop14h 57mFrontier
Wed 4/179:39 pmSTL - SEA
1 stop12h 56mFrontier
Deal found 3/27$189

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 3,238,496 searches. Data last updated March 28, 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.
Tue 4/169:35 pmSEA - STL
1 stop10h 12mMultiple Airlines
Tue 4/237:51 pmSTL - SEA
1 stop14h 54mMultiple Airlines
Deal found 3/27$164
Mon 4/159:00 pmSEA - STL
1 stop11h 18mFrontier
Thu 4/1810:56 pmSTL - SEA
1 stop22h 34mFrontier
Deal found 3/26$165
Wed 4/245:58 pmSEA - STL
1 stop14h 40mFrontier
Wed 5/17:51 pmSTL - SEA
1 stop22h 40mFrontier
Deal found 3/27$175
Sat 4/209:06 pmSEA - STL
1 stop15h 23mMultiple Airlines
Tue 4/237:51 pmSTL - SEA
1 stop14h 54mMultiple Airlines
Deal found 3/27$178
Mon 4/229:00 pmSEA - STL
1 stop11h 18mFrontier
Mon 4/299:53 pmSTL - SEA
1 stop13h 51mFrontier
Deal found 3/28$180
Mon 4/159:00 pmSEA - STL
1 stop11h 18mMultiple Airlines
Mon 4/225:02 pmSTL - SEA
1 stop17h 43mMultiple Airlines
Deal found 3/26$181
Thu 4/119:19 pmSEA - STL
1 stop14h 39mMultiple Airlines
Tue 4/164:50 pmSTL - SEA
1 stop26h 08mMultiple Airlines
Deal found 3/27$184
Thu 4/119:19 pmSEA - STL
1 stop14h 39mMultiple Airlines
Thu 4/1810:56 pmSTL - SEA
1 stop22h 34mMultiple Airlines
Deal found 3/27$185
Sat 4/139:32 pmSEA - STL
1 stop14h 57mFrontier
Wed 4/179:39 pmSTL - SEA
1 stop12h 56mFrontier
Deal found 3/27$189

Non-stop flights to St. Louis from Seattle

Discover non-stop flight options from Seattle to St. Louis. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 3,238,496 searches. Data last updated March 28, 2024.
Consider booking one of these non-stop flights heading from Seattle to St. Louis. Select from other flights from Seattle to St. Louis by using the search form above.
Sat 4/207:24 amSEA - STL
Nonstop3h 59mAlaska Airlines
Sat 4/277:00 amSTL - SEA
Nonstop4h 20mAlaska Airlines
Deal found 3/27$237
Sat 4/207:24 amSEA - STL
Nonstop3h 59mAlaska Airlines
Thu 4/257:00 amSTL - SEA
Nonstop4h 20mAlaska Airlines
Deal found 3/28$257
Thu 4/256:03 pmSEA - STL
Nonstop3h 56mAlaska Airlines
Sun 4/287:00 amSTL - SEA
Nonstop4h 20mAlaska Airlines
Deal found 3/27$277
Sun 4/286:03 pmSEA - STL
Nonstop3h 56mAlaska Airlines
Mon 4/297:00 amSTL - SEA
Nonstop4h 20mAlaska Airlines
Deal found 3/28$297
Wed 5/17:24 amSEA - STL
Nonstop3h 59mAlaska Airlines
Sun 5/57:00 amSTL - SEA
Nonstop4h 20mAlaska Airlines
Deal found 3/27$307
Tue 4/167:24 amSEA - STL
Nonstop3h 59mAlaska Airlines
Tue 4/237:00 amSTL - SEA
Nonstop4h 20mAlaska Airlines
Deal found 3/28$317
Fri 5/36:03 pmSEA - STL
Nonstop3h 56mAlaska Airlines
Sun 5/57:00 amSTL - SEA
Nonstop4h 20mAlaska Airlines
Deal found 3/28$327
Mon 4/156:05 pmSEA - STL
Nonstop3h 54mAlaska Airlines
Mon 4/227:00 amSTL - SEA
Nonstop4h 20mAlaska Airlines
Deal found 3/26$337
Wed 5/226:00 pmSEA - STL
Nonstop3h 59mAlaska Airlines
Mon 5/277:00 amSTL - SEA
Nonstop4h 14mAlaska Airlines
Deal found 3/28$342

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 3,238,496 searches. Data last updated March 28, 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.
Sun 4/712:50 amSEA - STL
1 stop7h 22mFrontier
Mon 4/158:04 pmSTL - SEA
1 stop26h 31mFrontier
Deal found 3/27$248
Sun 4/712:50 amSEA - STL
1 stop7h 22mFrontier
Sun 4/143:29 pmSTL - SEA
1 stop17h 51mFrontier
Deal found 3/27$298
Tue 4/210:31 pmSEA - STL
1 stop7h 56mAmerican Airlines
Sat 4/65:15 amSTL - SEA
1 stop9h 23mAmerican Airlines
Deal found 3/27$305
Wed 4/39:54 pmSEA - STL
1 stop22h 21mMultiple Airlines
Sun 4/77:37 pmSTL - SEA
1 stop15h 14mMultiple Airlines
Deal found 3/28$329
Thu 4/49:12 pmSEA - STL
1 stop11h 11mMultiple Airlines
Mon 4/158:04 pmSTL - SEA
1 stop26h 31mMultiple Airlines
Deal found 3/27$339
Wed 4/39:54 pmSEA - STL
1 stop22h 21mMultiple Airlines
Fri 4/57:37 pmSTL - SEA
1 stop15h 14mMultiple Airlines
Deal found 3/28$357
Wed 4/39:54 pmSEA - STL
1 stop22h 21mFrontier
Sun 4/711:15 pmSTL - SEA
1 stop26h 44mFrontier
Deal found 3/27$358
Thu 4/49:12 pmSEA - STL
1 stop11h 11mMultiple Airlines
Mon 4/159:52 pmSTL - SEA
2 stops24h 43mMultiple Airlines
Deal found 3/27$367
Wed 4/39:54 pmSEA - STL
1 stop22h 21mFrontier
Sun 4/711:15 pmSTL - SEA
1 stop26h 44mFrontier
Deal found 3/28$388

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 3,238,496 searches. Data last updated March 28, 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.
Fri 4/2610:34 pmSEA - STL
1 stop9h 13mFrontier
Deal found 3/27$82
Mon 4/228:20 amSEA - STL
1 stop29h 30mFrontier
Deal found 3/27$84
Wed 4/109:55 amSEA - STL
1 stop8h 44mFrontier
Deal found 3/27$90
Wed 5/159:55 amSEA - STL
1 stop8h 44mFrontier
Deal found 3/27$95
Sat 5/1111:43 pmSEA - STL
1 stop8h 10mAmerican Airlines
Deal found 3/27$97
Sat 5/2510:08 pmSEA - STL
1 stop22h 24mFrontier
Deal found 3/27$99
Sun 4/219:20 pmSEA - STL
1 stop10h 58mFrontier
Deal found 3/28$100
Sat 5/2510:08 pmSEA - STL
1 stop14h 45mFrontier
Deal found 3/26$101
Mon 4/229:00 pmSEA - STL
2 stops16h 50mFrontier
Deal found 3/27$103

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 3,238,496 searches. Data last updated March 28, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$164 - $275

Route

Depart

Return

Price

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Tue 4/16

1 stop10h 12m

Lambert-St Louis

Tue 4/23

1 stop14h 54m

$164

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Mon 4/15

1 stop11h 18m

Lambert-St Louis

Thu 4/18

1 stop22h 34m

$165

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Wed 4/24

1 stop14h 40m

Lambert-St Louis

Wed 5/1

1 stop22h 40m

$175

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Sat 4/20

1 stop15h 23m

Lambert-St Louis

Tue 4/23

1 stop14h 54m

$178

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Mon 4/22

1 stop11h 18m

Lambert-St Louis

Mon 4/29

1 stop13h 51m

$180

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Sat 4/13

1 stop7h 49m

Lambert-St Louis

Sat 4/20

1 stop10h 59m

$213

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Thu 5/30

1 stop5h 37m

Lambert-St Louis

Mon 6/3

1 stop5h 58m

$216

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Sat 4/20

Nonstop3h 59m

Lambert-St Louis

Sat 4/27

Nonstop4h 20m

$237

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Thu 4/11

1 stop14h 39m

Lambert-St Louis

Tue 4/16

3 stops31h 54m

$275

Flights are sorted by cheapest first

Deals found on 3/27

When is the best time to 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 January 28, 2024.
The best time to book flights from Seattle to St. Louis is 50 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

When is the cheapest time 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 March 24, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to St. Louis flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to St. Louis by month

Plan your trip from Seattle to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from Seattle to St. Louis is currently $95 while a round-trip flight costs $200. Price data was last updated on March 24, 2024.

Currently, September is the cheapest month in which you can book a flight from Seattle to St. Louis (average of $323). Flying from Seattle to St. Louis in June is currently the most expensive (average of $384). 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.

January

$326

February

$331

March

$357

April

$346

May

$356

June

$384

July

$380

August

$336

September

$323

October

$323

November

$336

December

$326

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

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 March 28, 2024.
Get a feel of what it's like to fly with Delta, Spirit Airlines and Frontier 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.
8.1
Very good
9,127 reviews

Boarding

8.2

Food

7.3

Entertainment

7.4

Comfort

7.9

Crew

8.6

Overall

8.1

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.

8.1
Very good
9,127 reviews
8.1
Very good
9,127 reviews

Boarding

8.2

Food

7.3

Entertainment

7.4

Comfort

7.9

Crew

8.6

Overall

8.1

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.

8.1
Very good
11,418 reviews
8.1
Very good
9,127 reviews

Boarding

8.2

Food

7.3

Entertainment

7.4

Comfort

7.9

Crew

8.6

Overall

8.1

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.

7.4
Good
11,481 reviews
8.1
Very good
9,127 reviews

Boarding

8.2

Food

7.3

Entertainment

7.4

Comfort

7.9

Crew

8.6

Overall

8.1

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.

7.3
Good
15,202 reviews
8.1
Very good
9,127 reviews

Boarding

8.2

Food

7.3

Entertainment

7.4

Comfort

7.9

Crew

8.6

Overall

8.1

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.

6.4
Okay
8,841 reviews
8.1
Very good
9,127 reviews

Boarding

8.2

Food

7.3

Entertainment

7.4

Comfort

7.9

Crew

8.6

Overall

8.1

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 49m 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 $200 on Cheapflights?

    Yes, there are multiple flights from Seattle to St. Louis for under $200. The cheapest flight booked recently is on Multiple Airlines for just $164, but on average you can expect to pay $194.

  • 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 $355.

  • Are there last-minute flights available from Seattle to St. Louis for under $300?

    There are currently 20+ open flights from Seattle to St. Louis within the next 7 days for less than $300.

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

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

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

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

    On average 2 flights depart from Seattle to St. Louis per day.
    Morning (6am - Noon) - 100% of flight departures

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

    Frontier, American Airlines, and Delta can get you from Seattle to St. Louis in just under 5h 37m. Your travel time can differ by up to 5h 41m. 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 $165. Other airlines that can offer you cheap pricing are American Airlines, from $213, and Delta, from $216. These flights start at 56% lower than the current average price 3 months from now.

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

    $82 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $97 and $108, respectively.

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

  • 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 (87%), Qatar Airways (82%), Japan Airlines (82%).

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

    The cheapest flight price from Seattle to St. Louis is $138. On average you can expect to pay $330. The most popular route, (Seattle/Tacoma Intl - Lambert-St Louis), can usually be booked for $154.

  • 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 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 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 see available direct flights.

  • 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 do 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.

  • 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 3/28.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 3,238,496 searches. Data last updated March 28, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$103Average$246FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapest$133Average$302FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Spirit AirlinesCheapest$157Average$300FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
American AirlinesCheapest$157Average$476FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$162Average$317FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Alaska AirlinesCheapest$171Average$367FlexibilityNo 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.

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 March 28, 2024.
0%of flight departuresEarly morningMidnight to 6 am
30%of flight departuresMorning6 am to noon
70%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 March 28, 2024.
Sunday9daily flights
Monday8daily flights
Tuesday4daily flights
Wednesday8daily flights
Thursday4daily flights
Friday8daily flights
Saturday3daily flights

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 makes it easy to find Seattle to St. Louis flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to St. Louis from Seattle.

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

Yes, we can. To see specific flights from Seattle to St. Louis with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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 can I compare prices from different travel booking sites for flights from Seattle to St. Louis?

Cheapflights aggregates prices from various travel booking sites. This allows you to compare prices and choose the best deal.

Can I find deals for flights from Seattle to St. Louis that offer flexible cancellation policies?

Cancellation policies vary by airline and fare type. After entering your flight details, you can view the cancellation policies for each deal in the search results. Some deals may offer flexibility in terms of cancellation and changes.

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