How can I find cheap flights from St. Louis Lambert International Airport to Seattle-Tacoma International Airport?
Explore the cheapest one-way and round-trip flights from St. Louis Lambert International Airport to Seattle-Tacoma International Airport over the next 90 days, with one-way fares from NZD 187 and round-trip from NZD 287. Based on Trip.com's latest 7-day flight data.
- Cheapest
- Round-trip
- Nonstop
- Recommended
- Next 7 days
- Fastest
- Cheapest
STL 6:32 AM10h 31m1 stopSEA 3:03 PMSt. Louis - Seattle | Wed, Dec 2 | Delta Air LinesNZD 187 NZD 29136% off36% offNZD 291 NZD 187
STL 7:08 AM9h 35m1 stopSEA 2:43 PMSt. Louis - Seattle | Tue, Dec 15 | Delta Air LinesNZD 188 NZD 29135% off35% offNZD 291 NZD 188
STL 7:46 PM6h 24m1 stopSEA 12:10 AMSt. Louis - Seattle | Mon, Dec 21 | Delta Air LinesNZD 188 NZD 29135% off35% offNZD 291 NZD 188
STL 10:14 AM10h 29m1 stopSEA 6:43 PMSt. Louis - Seattle | Wed, Dec 16 | Delta Air LinesNZD 18835% offNZD 291 NZD 188
STL 5:00 PM7h 52m1 stopSEA 10:52 PMSt. Louis - Seattle | Sat, Dec 12 | Delta Air LinesNZD 18935% offNZD 291 NZD 189
STL 7:08 AM9h 35m1 stopSEA 2:43 PMSt. Louis - Seattle | Tue, Dec 8 | Delta Air LinesNZD 18935% offNZD 291 NZD 189
STL 12:31 PM6h 39m1 stopSEA 5:10 PMSt. Louis - Seattle | Wed, Dec 9 | Delta Air LinesNZD 18935% offNZD 291 NZD 189
STL 2:17 PM9h 47m1 stopSEA 10:04 PMSt. Louis - Seattle | Fri, Dec 11 | Delta Air LinesNZD 19334% offNZD 291 NZD 193
STL 10:25 AM8h 31m1 stopSEA 4:56 PMSt. Louis - Seattle | Tue, Dec 15 | American AirlinesNZD 19533% offNZD 291 NZD 195
STL 1:00 PM17h 25m1 stopSEA 2:00 PMSt. Louis - Seattle | Fri, Nov 6 | Normal AirlineFind more flightsFind more flights
- Cheapest nonstop
STL 6:00 AM4h 36mNonstopSEA 8:36 AMSt. Louis - Seattle | Sun, Nov 8 | Alaska Airlines
SEA 6:07 PM3h 52mNonstopSTL 11:59 PMSeattle - St. Louis | Mon, Nov 16 | Alaska AirlinesNZD 358 NZD 48326% off26% offNZD 483 NZD 358
STL 6:00 AM4h 36mNonstopSEA 8:36 AMSt. Louis - Seattle | Thu, Nov 5 | Alaska Airlines
SEA 6:07 PM3h 52mNonstopSTL 11:59 PMSeattle - St. Louis | Thu, Nov 12 | Alaska AirlinesNZD 420 NZD 48313% off13% offNZD 483 NZD 420
STL 6:00 AM9h 15m1 stopSEA 1:15 PMSt. Louis - Seattle | Sat, Nov 14 | American Airlines
SEA 11:34 PM9h 18m1 stopSTL 10:52 AMSeattle - St. Louis | Sat, Nov 14 | American AirlinesNZD 287 NZD 48341% off41% offNZD 483 NZD 287
STL 7:26 AM8h 54m1 stopSEA 2:20 PMSt. Louis - Seattle | Fri, Nov 13 | American Airlines
SEA 11:34 PM9h 13m1 stopSTL 10:47 AMSeattle - St. Louis | Wed, Nov 18 | American AirlinesNZD 28741% offNZD 483 NZD 287
STL 8:00 AM7h 51m1 stopSEA 1:51 PMSt. Louis - Seattle | Fri, Nov 20 | American Airlines
SEA 11:34 PM8h 42m1 stopSTL 10:16 AMSeattle - St. Louis | Fri, Nov 20 | American AirlinesNZD 28741% offNZD 483 NZD 287
STL 7:26 AM8h 54m1 stopSEA 2:20 PMSt. Louis - Seattle | Thu, Nov 12 | American Airlines
SEA 11:34 PM9h 13m1 stopSTL 10:47 AMSeattle - St. Louis | Thu, Nov 12 | American AirlinesNZD 28741% offNZD 483 NZD 287
STL 2:20 PM6h 21m1 stopSEA 6:41 PMSt. Louis - Seattle | Fri, Nov 13 | Delta Air Lines
SEA 11:15 PM8h 10m1 stopSTL 9:25 AMSeattle - St. Louis | Wed, Nov 18 | Delta Air LinesNZD 29240% offNZD 483 NZD 292
STL 7:00 PM6h 59m1 stopSEA 11:59 PMSt. Louis - Seattle | Sat, Nov 14 | Delta Air Lines
SEA 11:15 PM8h 10m1 stopSTL 9:25 AMSeattle - St. Louis | Thu, Nov 19 | Delta Air LinesNZD 29240% offNZD 483 NZD 292
STL 2:20 PM6h 21m1 stopSEA 6:41 PMSt. Louis - Seattle | Thu, Nov 12 | Delta Air Lines
SEA 11:15 PM8h 10m1 stopSTL 9:25 AMSeattle - St. Louis | Thu, Nov 12 | Delta Air LinesNZD 29240% offNZD 483 NZD 292
STL 1:00 PM17h 25m1 stopSEA 2:00 PMSt. Louis - Seattle | Fri, Nov 6 | Normal Airline
SEA 3:00 PM6hNonstopSTL 4:00 PMSeattle - St. Louis | Sun, Nov 8 | Normal AirlineFind more flightsFind more flights
- Cheapest nonstop
STL 3:54 PM4h 32mNonstopSEA 6:26 PMSt. Louis - Seattle | Wed, Jan 6 | Alaska AirlinesNZD 242 NZD 78269% off69% offNZD 782 NZD 242
STL 3:54 PM4h 32mNonstopSEA 6:26 PMSt. Louis - Seattle | Thu, Jan 7 | Alaska AirlinesNZD 242 NZD 78269% off69% offNZD 782 NZD 242
STL 3:54 PM4h 32mNonstopSEA 6:26 PMSt. Louis - Seattle | Tue, Jan 5 | Alaska AirlinesNZD 242 NZD 78269% off69% offNZD 782 NZD 242
STL 3:54 PM4h 32mNonstopSEA 6:26 PMSt. Louis - Seattle | Fri, Jan 8 | Alaska AirlinesNZD 24369% offNZD 782 NZD 243
STL 3:54 PM4h 32mNonstopSEA 6:26 PMSt. Louis - Seattle | Sat, Jan 9 | Alaska AirlinesNZD 24669% offNZD 782 NZD 246
STL 6:00 AM4h 36mNonstopSEA 8:36 AMSt. Louis - Seattle | Thu, Nov 19 | Alaska AirlinesNZD 24715% offNZD 291 NZD 247
STL 6:04 AM4h 46mNonstopSEA 8:50 AMSt. Louis - Seattle | Mon, Dec 14 | Alaska AirlinesNZD 25313% offNZD 291 NZD 253
STL 6:00 AM4h 36mNonstopSEA 8:36 AMSt. Louis - Seattle | Sat, Nov 14 | Alaska AirlinesNZD 33356% offNZD 782 NZD 333
STL 6:04 AM4h 46mNonstopSEA 8:50 AMSt. Louis - Seattle | Sat, Dec 5 | Alaska AirlinesNZD 33356% offNZD 782 NZD 333
STL 1:00 PM17h 25m1 stopSEA 2:00 PMSt. Louis - Seattle | Fri, Nov 6 | Normal AirlineFind more flightsFind more flights
- Cheapest nonstop
STL 3:54 PM4h 32mNonstopSEA 6:26 PMSt. Louis - Seattle | Wed, Jan 6 | Alaska AirlinesNZD 242 NZD 78269% off69% offNZD 782 NZD 242
STL 3:54 PM4h 32mNonstopSEA 6:26 PMSt. Louis - Seattle | Tue, Jan 5 | Alaska AirlinesNZD 242 NZD 78269% off69% offNZD 782 NZD 242
STL 3:54 PM4h 32mNonstopSEA 6:26 PMSt. Louis - Seattle | Thu, Jan 7 | Alaska AirlinesNZD 242 NZD 78269% off69% offNZD 782 NZD 242
STL 3:54 PM4h 32mNonstopSEA 6:26 PMSt. Louis - Seattle | Fri, Jan 8 | Alaska AirlinesNZD 24369% offNZD 782 NZD 243
STL 3:54 PM4h 32mNonstopSEA 6:26 PMSt. Louis - Seattle | Sat, Jan 9 | Alaska AirlinesNZD 24669% offNZD 782 NZD 246
STL 6:04 AM4h 46mNonstopSEA 8:50 AMSt. Louis - Seattle | Sat, Dec 5 | Alaska AirlinesNZD 33356% offNZD 782 NZD 333
STL 6:00 AM4h 36mNonstopSEA 8:36 AMSt. Louis - Seattle | Sat, Nov 14 | Alaska AirlinesNZD 33356% offNZD 782 NZD 333
STL 6:04 AM4h 46mNonstopSEA 8:50 AMSt. Louis - Seattle | Tue, Dec 8 | Alaska AirlinesNZD 33456% offNZD 782 NZD 334
STL 6:04 AM4h 46mNonstopSEA 8:50 AMSt. Louis - Seattle | Sat, Dec 12 | Alaska AirlinesNZD 33456% offNZD 782 NZD 334
STL 1:00 PM17h 25m1 stopSEA 2:00 PMSt. Louis - Seattle | Fri, Nov 6 | Normal AirlineFind more flightsFind more flights
- Cheapest nonstop
STL 3:23 PM4h 30mNonstopSEA 5:53 PMSt. Louis - Seattle | Fri, Nov 6 | Alaska AirlinesNZD 377 NZD 92159% off59% offNZD 921 NZD 377
STL 7:00 AM4h 38mNonstopSEA 9:38 AMSt. Louis - Seattle | Sun, Nov 8 | Alaska AirlinesNZD 377 NZD 92159% off59% offNZD 921 NZD 377
STL 6:00 AM4h 36mNonstopSEA 8:36 AMSt. Louis - Seattle | Tue, Nov 10 | Alaska AirlinesNZD 674 NZD 92127% off27% offNZD 921 NZD 674
STL 7:00 AM4h 38mNonstopSEA 9:38 AMSt. Louis - Seattle | Sat, Nov 7 | Alaska AirlinesNZD 68026% offNZD 921 NZD 680
STL 7:00 AM4h 38mNonstopSEA 9:38 AMSt. Louis - Seattle | Mon, Nov 9 | Alaska AirlinesNZD 68026% offNZD 921 NZD 680
STL 3:23 PM4h 30mNonstopSEA 5:53 PMSt. Louis - Seattle | Thu, Nov 5 | Alaska AirlinesNZD 80113% offNZD 921 NZD 801
STL 12:28 PM6h 42m1 stopSEA 5:10 PMSt. Louis - Seattle | Tue, Nov 10 | Delta Air LinesNZD 43553% offNZD 921 NZD 435
STL 5:00 PM7h 5m1 stopSEA 10:05 PMSt. Louis - Seattle | Thu, Nov 5 | Delta Air LinesNZD 47049% offNZD 921 NZD 470
STL 1:00 PM17h 25m1 stopSEA 2:00 PMSt. Louis - Seattle | Fri, Nov 6 | Normal AirlineFind more flightsFind more flights
STL 3:23 PM4h 30mNonstopSEA 5:53 PMSt. Louis - Seattle | Fri, Nov 6 | Alaska AirlinesNZD 377 NZD 1,00763% off63% offNZD 1,007 NZD 377
STL 3:23 PM4h 30mNonstopSEA 5:53 PMSt. Louis - Seattle | Fri, Nov 6 | American AirlinesNZD 457 NZD 1,00755% off55% offNZD 1,007 NZD 457
STL 3:23 PM4h 30mNonstopSEA 5:53 PMSt. Louis - Seattle | Thu, Nov 19 | Alaska AirlinesNZD 504 NZD 1,00750% off50% offNZD 1,007 NZD 504
STL 3:23 PM4h 30mNonstopSEA 5:53 PMSt. Louis - Seattle | Fri, Nov 13 | Alaska AirlinesNZD 55645% offNZD 1,007 NZD 556
STL 3:23 PM4h 30mNonstopSEA 5:53 PMSt. Louis - Seattle | Thu, Nov 19 | American AirlinesNZD 64336% offNZD 1,007 NZD 643
STL 3:23 PM4h 30mNonstopSEA 5:53 PMSt. Louis - Seattle | Fri, Nov 13 | American AirlinesNZD 65835% offNZD 1,007 NZD 658
STL 3:23 PM4h 30mNonstopSEA 5:53 PMSt. Louis - Seattle | Thu, Nov 5 | Alaska AirlinesNZD 80120% offNZD 1,007 NZD 801
STL 3:23 PM4h 30mNonstopSEA 5:53 PMSt. Louis - Seattle | Thu, Nov 5 | American AirlinesNZD 87613% offNZD 1,007 NZD 876
STL 3:54 PM4h 32mNonstopSEA 6:26 PMSt. Louis - Seattle | Wed, Jan 6 | Alaska AirlinesNZD 24269% offNZD 782 NZD 242
STL 1:00 PM17h 25m1 stopSEA 2:00 PMSt. Louis - Seattle | Fri, Nov 6 | Normal AirlineFind more flightsFind more flights
Displayed flight fares from St. Louis to Seattle are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.
Trip.com Price Insights: Flights from St. Louis Lambert International Airport to Seattle-Tacoma International Airport
Which month is the cheapest for round-trip flights from St. Louis Lambert International Airport to Seattle-Tacoma International Airport?
Based on Trip.com data from the past 12 months, February is usually the cheapest month to find flights from St. Louis Lambert International Airport to Seattle-Tacoma International Airport, with an average price of NZD 394. In contrast, June is typically the most expensive month, with average prices reaching NZD 1,061.
What is the cheapest day of the week to fly from St. Louis Lambert International Airport to Seattle-Tacoma International Airport?
Based on Trip.com data from the past 12 months, the cheapest day to depart from St. Louis Lambert International Airport to Seattle-Tacoma International Airport is usually Tuesday, with average fares typically lower than other days. Try to avoid departing on Wednesday, as prices are usually the highest on that day.
Which airline offers the cheapest flights from St. Louis Lambert International Airport to Seattle-Tacoma International Airport?
The cheapest airline flying from St. Louis Lambert International Airport to Seattle-Tacoma International Airport is Delta Air Lines (from NZD 187) among 6 carriers operating this route. Based on Trip.com's latest 7-day flight data.






Find more flights and airlines
What is the flight schedule from St. Louis Lambert International Airport to Seattle-Tacoma International Airport?
Check the schedule for flights from St. Louis to Seattle and find the flight that best matches your travel plans.
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DL2455
St. Louis Lambert International Airport
2:15 PM
STL
4:32 PM
SLC
S M T - - - SSearch -
DL871
Salt Lake City International Airport
5:10 PM
SLC
6:30 PM
SEA
S M T W T F S -
DL5092
St. Louis Lambert International Airport
12:31 PM
STL
2:20 PM
MSP
S M T - - - -Search -
DL877
Minneapolis-Saint Paul International Airport
2:40 PM
MSP
4:35 PM
SEA
S M T W T F S -
AA2103
St. Louis Lambert International Airport
8:29 AM
STL
10:38 AM
DFW
S M T W T F SSearch -
AA717
Dallas Fort Worth International Airport
10:44 AM
DFW
1:15 PM
SEA
S M T W T F S -
AA2574
St. Louis Lambert International Airport
7:56 AM
STL
10:32 AM
PHX
S M T W T F SSearch -
AA2073
Phoenix Sky Harbor International Airport
11:30 AM
PHX
1:51 PM
SEA
S M T W T F S -
DL1492
St. Louis Lambert International Airport
5:00 PM
STL
7:26 PM
SLC
S M T W T F SSearch -
DL2998
Salt Lake City International Airport
10:45 PM
SLC
12:11 AM
SEA
S M T - - - S -
AA2261
St. Louis Lambert International Airport
5:00 AM
STL
7:08 AM
DFW
S M T W T F SSearch -
AA767
Dallas Fort Worth International Airport
8:39 AM
DFW
11:12 AM
SEA
S M T W T F S -
AA1926
St. Louis Lambert International Airport
7:24 AM
STL
9:00 AM
ORD
S M T W T F SSearch -
AA2398
O'Hare International Airport
11:30 AM
ORD
2:20 PM
SEA
S M T W T F S -
AA2897
St. Louis Lambert International Airport
10:21 AM
STL
12:25 PM
DFW
S M T W T F SSearch -
AA727
Dallas Fort Worth International Airport
2:25 PM
DFW
4:54 PM
SEA
S M T W - F S -
DL1839
St. Louis Lambert International Airport
5:29 PM
STL
7:11 PM
MSP
S M T - - - -Search -
DL505
Minneapolis-Saint Paul International Airport
9:50 PM
MSP
11:53 PM
SEA
S M T - - - S -
DL2363
St. Louis Lambert International Airport
7:30 AM
STL
9:53 AM
SLC
S M T W T F SSearch -
DL2921
Salt Lake City International Airport
1:20 PM
SLC
2:43 PM
SEA
S M T - - - S
About St. Louis Lambert International Airport and Seattle-Tacoma International Airport
Learn about St. Louis Lambert International Airport (STL) and Seattle-Tacoma International Airport (SEA) — including location, terminals, transportation, and travel tips.
| Flight distance | 2,747.47 km |
|---|---|
| Cheapest one-way ticket price | NZD 187 |
| Cheapest return ticket price | NZD 287 |
FAQs for St. Louis Lambert International Airport to Seattle-Tacoma International Airport Flights
How long is the flight from St. Louis Lambert International Airport to Seattle-Tacoma International Airport?
St. Louis Lambert International Airport to Seattle-Tacoma International Airport takes about 3 hours 58 minutes on average. Actual flight time may vary depending on route, weather and air traffic.How many daily flights are there from St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA)?
There are around 2 daily flights from St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA).What is the flight schedule from St. Louis Lambert International Airport to Seattle-Tacoma International Airport?
The earliest flight from St. Louis Lambert International Airport to Seattle-Tacoma International Airport departs at 06:02, and the last departs at 16:42, with about 2 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.When are flight tickets from St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA) most expensive?
The route from St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around NZD 766 in November, the most expensive month to book this route.What is the transportation method from the main airport to downtown in Seattle?
- The distance from Seattle-Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
Which airline operates the most direct flights from St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA)?
American Airlines is a very popular airline operating an average of 678 flights per month.What are the cheapest flights from St. Louis Lambert International Airport to Seattle-Tacoma International Airport?
One-way flights from St. Louis Lambert International Airport to Seattle-Tacoma International Airport currently start from NZD 187, and round-trip fares start from NZD 287. The current lowest fare is a Delta Air Lines flight departing on Wed, Dec 2; prices may vary depending on availability.Which airlines offer direct flights from St. Louis Lambert International Airport to Seattle-Tacoma International Airport?
Yes. Alaska Airlines operate direct flights from St. Louis Lambert International Airport to Seattle-Tacoma International Airport, with an average flight time of 3 hours 53 minutes, and around 13 weekly flights. Actual flight frequency may vary by season.What is the average price of a flight from St. Louis Lambert International Airport to Seattle-Tacoma International Airport?
Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from St. Louis Lambert International Airport to Seattle-Tacoma International Airport is NZD 404. Prices may vary depending on the departure date, airline, and availability.How many weekly flights are there from St. Louis Lambert International Airport to Seattle-Tacoma International Airport?
St. Louis Lambert International Airport to Seattle-Tacoma International Airport operates around 13 weekly flights, mainly by Alaska Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.How do I book flights from St. Louis Lambert International Airport to Seattle-Tacoma International Airport on Trip.com?
Enter St. Louis Lambert International Airport and Seattle-Tacoma International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.
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Note: Prices shown on this page are the lowest estimated prices found in the last 24 hours and include all taxes and fees.