Flight Check

Best Airline: MSP to SEA

Minneapolis to Seattle — airline reliability comparison

Delta Air Lines is the most reliable airline on the MSP to SEA route with a 87% on-time rate, compared to Alaska Airlines at 82%. Based on 6,314 flights tracked.

This route involves weather-prone airports, which can affect reliability regardless of airline.

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

Delta Air Lines87%
Alaska Airlines82%

MSP to SEA Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Delta Air LinesDLBest87%0.7%56m6,314
Alaska AirlinesASWorst82%1.3%57m3,260

Route Overview

85%
Overall On-Time
56m
Avg Delay
0.8%
Cancel Rate
9,574
Total Flights
MSP to SEA Route DetailsReturn: SEA to MSP
MSP AirportSEA Airport

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Data last updated October 2026. Source: Bureau of Transportation Statistics.