SEA to STL

Seattle to St Louis flight ticket price

Compare fares, departure times, stops and baggage details for this route, then open the full search when you are ready to check current availability and complete booking.

SEA
Seattle (SEA), United StatesSeattle/tacoma International
STL
St Louis (STL), United StatesLambert-St Louis Intl
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Live flights for Mon, 22 Jun 2026

Review fares, stops, timings and baggage. Use Search or View all flights for the complete search result.

Showing flight options for the selected travel date.
Currency: USD
Mon, 22 JunSEA to STL$330 Tue, 23 JunSEA to STL Wed, 24 JunSEA to STL Thu, 25 JunSEA to STL Fri, 26 JunSEA to STL Sat, 27 JunSEA to STL Sun, 28 JunSEA to STL
Sort By:DepartureDurationArrivalPrice
American Airlines
American Airlines
AA-7468
18:04
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
3H :55 M
Non Stop
23:59
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$330
total fare
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
Alaska Airlines
Alaska Airlines
AS-615
18:04
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
3H :55 M
Non Stop
23:59
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$357
total fare
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
American Airlines
American Airlines
AA-2520
13:58
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
8H :18 M
1 Stop
ORD · 2h 34mChicago (ORD), United States
00:16
2026-06-23
St Louis (STL)United StatesLambert-St Louis Intl
$380
total fare
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
United Airlines
United Airlines
UA-655
14:36
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
7H :21 M
1 Stop
DEN · 2h 20mDenver (DEN), United States
23:57
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$380
total fare
Non Refundable 1 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
American Airlines
American Airlines
AA-2524
15:05
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
7H :11 M
1 Stop
ORD · 1h 27mChicago (ORD), United States
00:16
2026-06-23
St Louis (STL)United StatesLambert-St Louis Intl
$380
total fare
Non Refundable 2 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
American Airlines
American Airlines
AA-3440
15:20
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
6H :37 M
1 Stop
PHX · 0h 29mPhoenix (PHX), United States
23:57
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$380
total fare
Non Refundable 3 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
United Airlines
United Airlines
UA-757
15:40
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
6H :17 M
1 Stop
DEN · 1h 16mDenver (DEN), United States
23:57
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$380
total fare
Non Refundable 3 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
American Airlines
American Airlines
AA-2881
23:58
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
6H :33 M
1 Stop
ORD · 1h 06mChicago (ORD), United States
08:31
2026-06-23
St Louis (STL)United StatesLambert-St Louis Intl
$380
total fare
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
Alaska Airlines
Alaska Airlines
AS-618
07:55
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
3H :57 M
Non Stop
13:52
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$397
total fare
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
American Airlines
American Airlines
AA-9271
07:55
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
3H :57 M
Non Stop
13:52
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$411
total fare
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
United Airlines
United Airlines
UA-768
13:51
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
7H :38 M
1 Stop
ORD · 1h 43mChicago (ORD), United States
23:29
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$416
total fare
Non Refundable 3 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Alaska Airlines
Alaska Airlines
AS-647
13:06
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
3H :51 M
Non Stop
18:57
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$437
total fare
Non Refundable 5 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
American Airlines
American Airlines
AA-2003
23:24
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
7H :26 M
1 Stop
DFW · 1h 42mDallas (DFW), United States
08:50
2026-06-23
St Louis (STL)United StatesLambert-St Louis Intl
$456
total fare
Non Refundable 5 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
United Airlines
United Airlines
UA-2135
07:05
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
8H :37 M
1 Stop
IAH · 2h 00mHouston (IAH), United States
17:42
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$472
total fare
Non Refundable 1 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
American Airlines
American Airlines
AA-9443
13:06
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
3H :51 M
Non Stop
18:57
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$496
total fare
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
American Airlines
American Airlines
AA-2748
05:10
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
9H :23 M
1 Stop
DFW · 3h 36mDallas (DFW), United States
16:33
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$542
total fare
Non Refundable 5 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
United Airlines
United Airlines
UA-2618
07:00
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
6H :46 M
1 Stop
ORD · 1h 05mChicago (ORD), United States
15:46
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$542
total fare
Non Refundable 1 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
American Airlines
American Airlines
AA-1667
07:31
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
8H :59 M
1 Stop
DFW · 3h 14mDallas (DFW), United States
18:30
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$542
total fare
Non Refundable 5 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
American Airlines
American Airlines
AA-707
10:23
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
9H :14 M
1 Stop
DFW · 3h 14mDallas (DFW), United States
21:37
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$542
total fare
Non Refundable 5 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
United Airlines
United Airlines
UA-2835
10:52
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
8H :38 M
1 Stop
ORD · 2h 54mChicago (ORD), United States
21:30
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$542
total fare
Non Refundable 1 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
United Airlines
United Airlines
UA-1715
11:02
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
8H :08 M
1 Stop
DEN · 3h 07mDenver (DEN), United States
21:10
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$542
total fare
Non Refundable 3 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
American Airlines
American Airlines
AA-767
11:43
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
7H :54 M
1 Stop
DFW · 1h 52mDallas (DFW), United States
21:37
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$542
total fare
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces

Recommended hotels in St Louis

Stay options near the arrival city for the same travel date.

Search hotels
Best Western Plus Louisa
2.0Very GoodLive availability

Best Western Plus Louisa

- 18199 US-23, Louisa, KY 41230 ,

Free WiFiACBreakfast
Room availability is checked live
$104per night+ taxes if applicable
View Rooms

1 Night • 2 Star

United Airlines
United Airlines
UA-2293
12:04
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
8H :41 M
1 Stop
IAH · 1h 46mHouston (IAH), United States
22:45
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$542
total fare
Non Refundable 1 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
United Airlines
United Airlines
UA-1351
12:50
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
6H :20 M
1 Stop
DEN · 1h 16mDenver (DEN), United States
21:10
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$542
total fare
Non Refundable 3 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
American Airlines
American Airlines
AA-717
14:03
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
7H :56 M
1 Stop
DFW · 1h 58mDallas (DFW), United States
23:59
2026-06-22
St Louis (STL)United StatesLambert-St Louis Intl
$542
total fare
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
Delta Air Lines
Delta Air Lines
DL-567
21:45
2026-06-22
SEATTLE (SEA)United StatesSeattle/tacoma International
8H :31 M
1 Stop
ATL · 1h 59mAtlanta (ATL), United States
08:16
2026-06-23
St Louis (STL)United StatesLambert-St Louis Intl
$542
total fare
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
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Fare highlights

Selected flight highlights for 22 Jun 2026.

Open full search
Lowest fare $330 American Airlines 18:04
Earliest departure $542 American Airlines 05:10
Shortest duration $437 Alaska Airlines 13:06
Night 00:00-05:59 $542 American Airlines at 05:10
Morning 06:00-11:59 $397 Alaska Airlines at 07:55
Afternoon 12:00-17:59 $380 American Airlines at 13:58
Evening 18:00-23:59 $330 American Airlines at 18:04

Seattle to St Louis route details

Seattle (SEA)

Seattle/tacoma International

United States

GMT -8

Latitude: 47.449001

Longitude: -122.308998

St Louis (STL)

Lambert-St Louis Intl

United States

GMT -6

Latitude: 38.748697

Longitude: -90.370003

Distance: Seattle (SEA), United States to St Louis (STL), United States - 2,744.34 km
Flights shown for 22 Jun 2026. View all flights opens the complete search result.

Seattle to St Louis - what to expect when booking

The SEA to STL cards above show selected flight options. Airline prices and seat availability can move quickly, so the final fare is rechecked in the booking flow.

Approx route distance: 2,744.34 km.

Before you book

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More flights from St Louis (STL)23 routes
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STL → ATL
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St Louis → Cancun
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STL → CVG
St Louis → Cleveland
STL → CLE
St Louis → Columbus
STL → CMH
St Louis → Dallas
STL → DAL
St Louis → Decatur
STL → DEC
St Louis → Denver
STL → DEN
St Louis → Detroit Mi
STL → DTW
St Louis → Fort Lauderdale
STL → FLL
St Louis → Fort Leonard Wood
STL → TBN
St Louis → Fort Myers
STL → RSW
St Louis → Dallas
STL → DFW
St Louis → Grand Rapids
STL → GRR
St Louis → Houston
STL → IAH
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STL → HOU
St Louis → Jonesboro
STL → JBR
St Louis → Kansas City
STL → MCI
Frequently asked questions - Seattle to St Louis flights
Yes, booking flights in advance helps you secure cheap flight tickets. Comparing air ticket prices 3–4 weeks early gives you better visibility of airline timings, baggage policies, and fare rules before high-demand periods push prices up.
The approximate direct air distance between Seattle (SEA) and St Louis (STL) is 2,744.34 km. The actual flight duration and route path vary depending on airline schedules and wind conditions.
Non-stop flight availability depends on the airline schedule and departure date. You can filter the live search results by stops to view direct flights, one-stop connections, and transit flights instantly.
Airline seat inventory and airfares change dynamically in real-time. Selecting 'Book Now' runs a live fare verification check to ensure you get the most accurate price before final booking confirmation.
Yes, you can easily compare flights for nearby dates. Select any date on the date calendar strip to refresh the fares, compare air ticket pricing, and choose the most budget-friendly travel day.