Routes/Detroit, MI to St. Louis, MO

Detroit, MI to St. Louis, MO

Average one-way fare in 2026 Q1: $307 · 440 nonstop miles · 286 passengers per day.

2026 Q1 fare$307
2025 Q1 fare$261
Change+$46
Passengers/day286
Distance440 mi

The average fare a year earlier (2025 Q1) was $261. The change is $46 higher (17.4%).

The largest carrier on this route in 2026 Q1 was Delta with 70% of passengers. The lowest-fare carrier was Southwest with 28% of passengers, at an average fare of $242.

All routes from Detroit, MI · All routes from St. Louis, MO

All quarters on this route

QuarterPassengers/dayAvg. fareLargest carrierLargest shareLowest-fare carrier
2024 Q1299$233Delta69%Southwest
2024 Q2421$226Delta66%Southwest
2024 Q3399$236Delta64%Southwest
2024 Q4379$249Delta62%Southwest
2025 Q1275$261Delta73%Southwest
2025 Q2402$234Delta69%Southwest
2025 Q3445$197Delta63%Southwest
2025 Q4380$252Delta67%Southwest
2026 Q1286$307Delta70%Southwest

Source: U.S. Department of Transportation, Consumer Airfare Report Table 1, 2026 Q1. Figures are average one-way fares paid, including taxes and fees, for the quarter shown. Record: city markets 31295 and 31123; U.S. Department of Transportation, Domestic Airline Consumer Airfare Report, Table 1: top 1,000 contiguous-state city-pair markets (average one-way fare, passengers per day, largest carrier, lowest-fare carrier). Fetched 2026-09-27T00:40:04Z. Source data.