FRA→STL

Lufthansa is the only carrier the DOT report shows on FRA to STL, with 302 flights and an average of 229 passengers aboard each. A single-carrier route gives a delayed passenger no same-day alternative on the same ticket, which is worth knowing before booking a tight onward connection.

The DOT's international report puts 43 flights on the pair in June 2026, the busiest month of the window, and 0 in February 2026, the thinnest. A summer-to-winter swing of that size means the winter schedule is a different operation: fewer frequencies, so a cancellation leaves a longer wait for the next seat.

EUROCONTROL's figures for Frankfurt as a whole, every airline and every destination: 70.8% of departures and 78.3% of arrivals within 15 minutes of schedule from 1 January to 21 October 2026, with 94.8% of scheduled flights operated. The last seven days ran at 72.5% for departures, 2 points better than the year so far. Air traffic flow management delay attributed to the airport averaged 0.6 minutes per arriving flight this year, 0.2 over the last week.

Every US route from Frankfurt, and its full punctuality record

St. Louis Lambert International is scored on this site from the DOT's domestic data: 77.4% of its 63,096 domestic departures arrived on time over the last twelve months, with delayed flights running a little over an hour late, and 1.32% were cancelled. Those are domestic flights, not this route, but an arriving transatlantic flight shares the same runways, the same weather and the same ground delay programmes, so a bad day at STL reaches a flight from FRA just as surely. The airport's own page has the hour-by-hour and month-by-month detail, and its live FAA status appears above when the FAA has something to say.

St. Louis Lambert International (STL) delay statistics, hour by hour and month by month

Every flight that departs Frankfurt falls under Regulation (EC) 261/2004, whichever airline flies it and wherever it lands. If it arrives at St. Louis Lambert International three hours or more late, or is cancelled with under 14 days' notice, and the cause was within the airline's control, each passenger is owed €600 (€300 if the airline got you there under four hours late), on top of rebooking and care. Weather, air traffic control restrictions and strikes outside the airline are the usual exemptions. The return flight from STL is covered only when the carrier is EU based. The sector is about 4,581 miles, 7,371 km, which puts it in the top distance band.

Delayed three hours or more? Check a claim with Compensair →

There is no grade to give FRA to STL without a route record, and this site does not invent one. What the three sources support: about three departures a week in each direction, a single carrier, a departure airport that gets 71% of its departures away on time and an arrival airport that runs 77% on time domestically. Leave two hours for any onward connection at STL; immigration comes before the connecting flight.

• Frankfurt (FRA): every US route
• St. Louis Lambert International (STL) delay statistics
• FRA to JFK, New York (JFK)3,168 flights
• FRA to ORD, Chicago (ORD)2,780 flights
• FRA to IAD, Washington (IAD)2,352 flights
• FRA to SFO, San Francisco (SFO)2,330 flights
• Every Europe-to-US route and airport

Germany publishes no route-level punctuality, so this page cannot grade the route. The UK pages in this section can, because the CAA does.