Compare live prices for SEA to STL. Use the search panel
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SEA → STLApprox. 2744.34 km08 May 2026Live inventory
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Showing 25
of 107
live flights
Delta Air Lines
DL-953
23:59
05/08/2026
SEA
Seattle Tacoma International Airport
10h 33m
1 Stop
⏱ MSP · 3h 29mMSP Airport
10:32
05/09/2026
+1
STL
St Louis Lambert International Airport
₹11,080
per person
✕ Non-refundable3 fare options
Delta Air Lines
DL-1120
13:25
05/08/2026
SEA
Seattle Tacoma International Airport
11h 5m
1 Stop
⏱ SLC · 3h 58mSLC Airport
00:30
05/09/2026
+1
STL
St Louis Lambert International Airport
₹11,080
per person
✕ Non-refundable3 fare options
Delta Air Lines
DL-1706
12:30
05/08/2026
SEA
Seattle Tacoma International Airport
8h 39m
1 Stop
⏱ DTW · 0h 30mDTW Airport
21:09
05/08/2026
STL
St Louis Lambert International Airport
₹11,080
per person
✕ Non-refundable3 fare options
Delta Air Lines
DL-812
05:30
05/08/2026
SEA
Seattle Tacoma International Airport
11h 46m
1 Stop
⏱ DTW · 3h 44mDTW Airport
17:16
05/08/2026
STL
St Louis Lambert International Airport
₹11,080
per person
✕ Non-refundable3 fare options
Delta Air Lines
DL-810
23:05
05/08/2026
SEA
Seattle Tacoma International Airport
10h 24m
1 Stop
⏱ DTW · 2h 15mDTW Airport
09:29
05/09/2026
+1
STL
St Louis Lambert International Airport
₹11,080
per person
✕ Non-refundable2 fare options
American Airlines
AA-2768
15:17
05/08/2026
SEA
Seattle Tacoma International Airport
8h 39m
1 Stop
⏱ ORD · 1h 0mORD Airport
23:56
05/08/2026
STL
St Louis Lambert International Airport
₹11,500
per person
✕ Non-refundable14 fare options
American Airlines
AA-2741
13:19
05/08/2026
SEA
Seattle Tacoma International Airport
9h 0m
1 Stop
⏱ ORD · 1h 6mORD Airport
22:19
05/08/2026
STL
St Louis Lambert International Airport
₹11,500
per person
✕ Non-refundable14 fare options
American Airlines
AA-2003
23:55
05/08/2026
SEA
Seattle Tacoma International Airport
8h 59m
1 Stop
⏱ DFW · 1h 15mDFW Airport
08:54
05/09/2026
+1
STL
St Louis Lambert International Airport
₹11,500
per person
✕ Non-refundable14 fare options
American Airlines
AA-2398
23:33
05/08/2026
SEA
Seattle Tacoma International Airport
8h 54m
1 Stop
⏱ ORD · 1h 23mORD Airport
08:27
05/09/2026
+1
STL
St Louis Lambert International Airport
₹11,500
per person
✕ Non-refundable13 fare options
American Airlines
AA-2741
13:19
05/08/2026
SEA
Seattle Tacoma International Airport
10h 37m
1 Stop
⏱ ORD · 2h 51mORD Airport
23:56
05/08/2026
STL
St Louis Lambert International Airport
₹11,500
per person
✕ Non-refundable13 fare options
American Airlines
AA-2003
23:55
05/08/2026
SEA
Seattle Tacoma International Airport
11h 37m
1 Stop
⏱ DFW · 3h 56mDFW Airport
11:32
05/09/2026
+1
STL
St Louis Lambert International Airport
₹11,500
per person
✕ Non-refundable13 fare options
United Airlines
UA-2379
23:59
05/08/2026
SEA
Seattle Tacoma International Airport
9h 31m
1 Stop
⏱ IAH · 1h 5mIAH Airport
09:30
05/09/2026
+1
STL
St Louis Lambert International Airport
₹16,128
per person
✕ Non-refundable🔥 Last 5 seats7 fare options
American Airlines
AA-3449
14:57
05/08/2026
SEA
Seattle Tacoma International Airport
9h 15m
1 Stop
⏱ PHX · 1h 6mPHX Airport
00:12
05/09/2026
+1
STL
St Louis Lambert International Airport
₹16,128
per person
✕ Non-refundable9 fare options
United Airlines
UA-747
23:53
05/08/2026
SEA
Seattle Tacoma International Airport
10h 55m
1 Stop
⏱ ORD · 3h 21mORD Airport
10:48
05/09/2026
+1
STL
St Louis Lambert International Airport
₹16,128
per person
✕ Non-refundable🔥 Last 2 seats6 fare options
United Airlines
UA-264
22:41
05/08/2026
SEA
Seattle Tacoma International Airport
15h 51m
2 Stops
⏱ IAD · 3h 18mIAD Airport⏱ ORD · 1h 35mORD Airport
14:32
05/09/2026
+1
STL
St Louis Lambert International Airport
₹16,631
per person
✕ Non-refundable🔥 Last 3 seats4 fare options
United Airlines
UA-264
22:41
05/08/2026
SEA
Seattle Tacoma International Airport
15h 51m
2 Stops
⏱ IAD · 1h 30mIAD Airport⏱ ORD · 3h 24mORD Airport
14:32
05/09/2026
+1
STL
St Louis Lambert International Airport
₹16,631
per person
✕ Non-refundable🔥 Last 3 seats4 fare options
Southwest Airlines
WN-2650
12:55
05/08/2026
SEA
Seattle Tacoma International Airport
8h 45m
1 Stop
⏱ LAS · 0h 50mLAS Airport
21:40
05/08/2026
STL
St Louis Lambert International Airport
₹16,644
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-2650
12:55
05/08/2026
SEA
Seattle Tacoma International Airport
10h 55m
1 Stop
⏱ LAS · 3h 5mLAS Airport
23:50
05/08/2026
STL
St Louis Lambert International Airport
₹16,644
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-4195
13:55
05/08/2026
SEA
Seattle Tacoma International Airport
9h 55m
1 Stop
⏱ DEN · 3h 0mDEN Airport
23:50
05/08/2026
STL
St Louis Lambert International Airport
₹16,644
per person
✕ Non-refundable🔥 Last 2 seats5 fare options
Southwest Airlines
WN-4198
23:55
05/08/2026
SEA
Seattle Tacoma International Airport
10h 35m
1 Stop
⏱ MDW · 3h 20mMDW Airport
10:30
05/09/2026
+1
STL
St Louis Lambert International Airport
₹16,644
per person
✕ Non-refundable5 fare options
alaskaairlines
AS-472
17:57
05/08/2026
SEA
Seattle Tacoma International Airport
6h 2m
Non-stop
23:59
05/08/2026
STL
St Louis Lambert International Airport
₹17,329
per person
✕ Non-refundable6 fare options
Delta Air Lines
DL-1265
10:50
05/08/2026
SEA
Seattle Tacoma International Airport
8h 13m
1 Stop
⏱ SLC · 1h 10mSLC Airport
19:03
05/08/2026
STL
St Louis Lambert International Airport
₹17,478
per person
✕ Non-refundable3 fare options
American Airlines
AA-2775
11:16
05/08/2026
SEA
Seattle Tacoma International Airport
11h 3m
1 Stop
⏱ ORD · 3h 9mORD Airport
22:19
05/08/2026
STL
St Louis Lambert International Airport
₹17,697
per person
✕ Non-refundable7 fare options
Southwest Airlines
WN-4195
13:55
05/08/2026
SEA
Seattle Tacoma International Airport
8h 10m
1 Stop
⏱ DEN · 1h 20mDEN Airport
22:05
05/08/2026
STL
St Louis Lambert International Airport
₹18,233
per person
✕ Non-refundable🔥 Last 5 seats5 fare options
Southwest Airlines
WN-4194
08:00
05/08/2026
SEA
Seattle Tacoma International Airport
10h 20m
1 Stop
⏱ DEN · 3h 40mDEN Airport
18:20
05/08/2026
STL
St Louis Lambert International Airport
₹18,233
per person
✕ Non-refundable🔥 Last 2 seats5 fare options
😕 No flights match your filters.
Seattle (SEA)
📍 Seattle Tacoma International Airport
🌍 United States
🕐 GMT -8
📐 Latitude: 47.449001
📐 Longitude: -122.308998
St. Louis (STL)
📍 St Louis Lambert International Airport
🌍 United States
🕐 GMT -6
📐 Latitude: 38.748697
📐 Longitude: -90.370003
✈ Distance: Seattle,USA to St. Louis,USA — 2744.34 km
📅 Results on this page are loaded for 08 May 2026. Click View all flights for the complete live search.
Seattle to St. Louis — what to expect when booking
The SEA–STL route is served by multiple carriers throughout the year.
Fares on this route can move quickly — a price available now may not be there 30 minutes later.
If your dates are flexible, try shifting your departure by a day or two using the date strip above.
Mid-week departures often show lower base fares compared to weekend starts on many routes.
The distance between Seattle,USA and St. Louis,USA is approximately
2744.34 km.
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❓ Frequently asked questions — Seattle to St. Louis flights
Generally yes — fares on most routes are most competitive around 4–6 weeks before departure. Booking earlier usually means better availability and a lower base fare when your dates are fixed.
The straight-line distance between Seattle,USA (SEA) and St. Louis,USA (STL) is approximately 2744.34 km. Actual flying distance may vary slightly depending on routing.
Non-stop availability on this route varies by airline schedule and season. Use the filters below to quickly check whether direct options are available on your selected date.
Mid-week departures often show lower prices than weekend travel on many routes. Use the date strip above to compare nearby days quickly.