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InsightAirline Statistics > KSEA to KSTL (Southwest)

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Enter two airports to see historical statistics about commercial airline flights for that origin/destination pair in the last year.
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Non-stop fares

Passengers traveling from Seattle-Tacoma Intl (Seattle, WA) () to Lambert-St Louis Intl (St Louis, MO) () on Southwest (or its operators) paid the following prorated amounts for that one-way ticket during the previous 12 months:

Fare classMinimum/TicketMedian/TicketMaximum/TicketRevenue/FlightRevenue/Year
Unrestricted Coach Class$159.03$434.51$525.14$982.84$81,576.16
Restricted Coach Class$103.80$218.03$469.57$9,479.82$786,825.45
Total$10,462.66$868,401.61

Alternate routings and fares

Popular airport connections or alternate routing from Seattle-Tacoma Intl (Seattle, WA) () and Lambert-St Louis Intl (St Louis, MO) () across all carriers over the last 12 months included (prices lower than the most popular are in bold):

RoutingCarrierPopularityMinimumMedianMaximum
non-stopAmerican Airlines23%$68.06$231.53$1,199.57
non-stopSouthwest7%$103.80$225.55$525.14
via Frontier7%$81.09$165.59$843.00
via American Airlines7%$74.01$241.04$1,023.54
via American Airlines5%$64.58$256.92$1,320.63
via Delta4%$74.47$230.08$1,492.08
via Southwest4%$103.51$204.87$484.20
via Southwest4%$106.54$222.01$504.13
non-stopAlaska Airlines
(operated by American Airlines)
4%$75.58$230.00$1,113.04
via United3%$104.95$310.00$1,144.39
via US Airways3%$62.54$236.90$529.95
via Delta3%$99.81$220.48$692.06
via United3%$92.02$320.00$1,607.94
via Southwest3%$119.96$233.20$510.26
via Northwest Airlines2%$78.54$180.55$770.99
non-stopFrontier2%$108.07$174.25$406.98
via AirTran1%$113.53$176.96$478.90
via Alaska Airlines1%$166.83$268.71$483.42

Flight frequency

On non-stop flights from Seattle-Tacoma Intl (Seattle, WA) () to Lambert-St Louis Intl (St Louis, MO) (), carriers flew the following number of flights during the previous 12 months:

CarrierFlights performedFlights scheduledPercentage flown
American Airlines453455100%
Southwest838499%
Delta100%

Load factor

On non-stop flights from Seattle-Tacoma Intl (Seattle, WA) () to Lambert-St Louis Intl (St Louis, MO) (), carriers filled this percentage of their seats during the previous 12 months:

CarrierPercentage of seats filledTotal seatsPassengersAverage per flight
Southwest95%11,37110,897131
American Airlines86%68,70861,250135
Delta47%262123123

Cargo

On non-stop flights from Seattle-Tacoma Intl (Seattle, WA) () to Lambert-St Louis Intl (St Louis, MO) (), carriers handled this amount of cargo (including passenger luggage) during the previous 12 months:

CarrierCargo weight (lbs)Mail transport (lbs)
American Airlines17,954,430111,392
Southwest3,058,7000
Delta80,5500

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