$129 Find Cheap Flights from Washington Dulles Airport to Louisville - Compare and Save

Among airlines operating Washington, D.C. Dulles Intl Airport to Louisville flights:

• United Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only United Airlines operates flights between Washington, D.C. Dulles Intl Airport and Louisville.

Flights from Washington, D.C. Dulles Intl Airport to Louisville usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Louisville Intl (SDF).

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag and a checked bag in Economy Class
• JetBlue: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Two cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Louisville:

• Economy Class
• First Class

On this route, nonstop flights are cheaper than layover options on average. Nonstop fares average $320 round-trip, compared to $362 via a layover through Detroit Metropolitan Wayne County (DTW).

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$80 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Embraer 175 (Enhanced Winglets) family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Embraer 175 variants.

One-stop flights from Washington, D.C. Dulles Intl Airport to Louisville most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) - 41% of one-stop connections
• Charlotte Douglas (CLT) - 24% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 24% of one-stop connections
• Chicago O'Hare Intl (ORD) - 12% of one-stop connections

Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

On the Washington, D.C. Dulles Intl Airport to Louisville route, being flexible with your departure day can save you up to 48%. Saturday is the cheapest day at $279 round-trip on average, while Monday is the most expensive at $527: a $248 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Morning is the busiest departure period on Washington, D.C. Dulles Intl Airport to Louisville flights, with 34% of flights leaving in that window. Afternoon departures account for 33%, evening flights for 33%, and night flights for 0%.

Some of the most popular sights in Louisville are Louisville Waterfront Park and Masonic Widows and Orphans Home. These are among the most viewed places in Louisville on KAYAK.

These are the earliest and latest flight times available from Washington, D.C. Dulles Intl Airport to Louisville:

• Earliest: departs at 8:17 am and lands at 10:07 am
• Latest: departs at 10:10 pm and lands at 12:00 am.

The flight takes about 1h 50m.

Last-minute fares on this route - booked within 2 weeks of departure - run 17% above the route average of $322. Book 16 weeks before departure for the lowest fares.

A nonstop flight from Washington, D.C. Dulles Intl Airport to Louisville takes 1h 50m, covering 450 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $243 to $1,662. That means the highest observed fare was about 7x higher than the lowest one.

One-way fares from Washington, D.C. Dulles Intl Airport to Louisville are currently lower than usual. Average one-way flight prices are about $189, which is 37% below the typical average for this route.

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 4h 01m, compared with 4h 15m via Charlotte Douglas (CLT) and 4h 33m via Atlanta Hartsfield-Jackson (ATL).

Louisville Intl Airport (SDF) hosts 5 major car rental companies, with daily rates starting from around $32 for economy cars. Top options include:
• Hertz
• Dollar
• Alamo
• Thrifty
• Budget

Round-trip flights from Washington, D.C. Dulles Intl Airport to Louisville range from $256 to $447, with an average of $322 over the past 12 months. Anything below $256 counts as a good deal.