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Duluth and Philadelphia are both served by 1 main airport.

The total flight duration time from Duluth (DLH) to Philadelphia (PHL) is typically 6 hours 48 minutes. This is the average non-stop flight time based upon historical flights for this route.

During this period travelers can expect to fly about 1, miles, or 1, kilometers. May 27, Flexible airline tickets for Delta flights from Duluth DLH to Philadelphia PHL Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options.

Use our ‘no change fee’ filter to see which flights have this option. There are a lot of reasons to book your flights to.

Search for cheap flights from Duluth Intl. (DLH) to Philadelphia Intl. (PHL) starting atWe offer cheap direct, non-stop flights including one way and roundtrip tickets. Which airlines provide the cheapest flights from Duluth to Philadelphia? In the past 3 days, the cheapest one-way tickets to Philadelphia from Duluth were found on Delta () and United Airlines (), and the lowest round-trip tickets were found on. Best time to find cheap flights, 37% potential price drop.

Average price.Average for round-trip flights in September Round-trip from.From Duluth Intl to Philadelphia. Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data. During holiday seasons, like Thanksgiving, Christmas, New Year, Independence Day and Memorial Day, book flights from Duluth, Duluth International Airport to (PHL) Philadelphia, Philadelphia International Airport at least 2 months in advance.

Air fares with one or more stops are usually cheaper than Duluth (DLH) to Philadelphia (PHL) direct flights.