$40 Find Cheap Flights from Kentucky to the United States

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1 adult, Economy, 0 bags

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Good to know

Low seasonSeptember
Cheapest flight$40
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from Cincinnati to Miami

Flights from Kentucky to the United States: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Kentucky to the United States 
Learn how KAYAK collects reviews and tips from users.
Mike & DebbieFlew with Southwest
SDF
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DAL
Dec 2025
Give yourself plenty of time with TSA in Louisville. Only 3 agents checking ids at their busiest times.
Verified travelerFlew with American Airlines
SDF
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CLT
Mar 2025
More time should be given between connecting flights. Large distance to travel from Concourse C to Concourse B.
Mike & DebbieFlew with Southwest
SDF
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HOU
Mar 2025
TSA screening backs up over lunch time. A smaller area for Screening slows things down.
RoyceFlew with Spirit Airlines
SDF
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FLL
Jan 2025
Don't get there earlier than two hours, otherwise you'll be waiting to check your bags in Louisville. It's just a tiny airport.
TinaFlew with Delta
SDF
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ATL
Oct 2024
Arrive early so you don’t feel rushed. Mind your assigned zones. I know people want to get onboard as soon as possible because of overhead compartments, but plan ahead in case you need to gate check your bag. And pack your patience. I know that sounds cliched but it’ll help.
Verified travelerFlew with Alaska Airlines
SDF
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ORD
Apr 2024
If flight gets delayed. Be sure to ask the airlines you traveled with, to rebook the next available flight immediately.

FAQs for booking flights from Kentucky to the United States

  • How does KAYAK find such low prices on flights from Kentucky to the United States?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Kentucky to the United States.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Kentucky to the United States?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Kentucky to the United States is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Kentucky to the United States?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Kentucky to the United States with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Kentucky to the United States?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Kentucky to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines fly most frequently to the United States?

    Kentucky and United States are connected by different airlines. The airlines that fly that route the most regularly are American Airlines (362 flights per week), Delta (324 flights per week), and United Airlines (238 flights per week).

  • How many airports are there in the United States?

    There are 587 airports in the United States. The busiest airport is Hartsfield-Jackson Atlanta Airport (ATL), with 8% of all flights arriving there.

  • Which is the cheapest airport to fly into in the United States?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in the United States is Fort Lauderdale Airport (FLL), with an average flight price of $122.

  • What is the cheapest day to fly to the United States?

    Based on KAYAK data, the cheapest day to fly to the United States is Thursday where round-trip tickets can be as cheap as $299. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $448 on average.

  • What is the cheapest time of day to fly to the United States?

    The cheapest time of day to fly to the United States is generally at night, when round-trip flights cost $196 on average. Morning departures are around 17% cheaper than evening flights, on average. The most expensive time of day to fly to the United States is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $586.

  • What is the cheapest flight to the United States?

    The cheapest ticket to the United States from Kentucky found in the last 72 hours was to Orlando Airport, at $80 round-trip. The most popular route is Lexington (LEX) to Atlanta (ATL) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $214.

  • What is the cheapest month to fly from Kentucky to the United States?

    The cheapest month for flights from Kentucky to the United States is September, when tickets cost $228 (return) on average. On the other hand, the most expensive months are October and November, when the average cost of round-trip tickets is $538 and $458 respectively.

  • How many cities have direct flights to the United States?

    From Kentucky, there are direct flights to the United States from 4 cities. The city with the most direct flights is Louisville, with 2,271 direct flights each week.

  • How many direct flights to the United States are there each day?

    There are around 464 direct flights from within Kentucky to the United States every day. Most flights (51%) depart in the morning.

  • How many direct flights to the United States are there each week?

    Each week there are around 3,245 direct flights from within Kentucky to the United States. The most common day for departures is Sunday, with 17% of flights taking off on this day.

  • How long is the flight to the United States?

    An average nonstop flight from Kentucky to the United States takes 2h 42m, covering a distance of 961 miles. The shortest route is Cincinnati (CVG) to Chicago O'Hare Intl Airport (ORD) with an average flight time of 1h 31m.

  • How many long-haul flights are there to the United States each week?

    Each week, there are 21 medium-haul flights (3-6 hour flight duration) and 3,224 short-haul flights (up to 3 hour flight duration) to the United States. There aren't any long-haul flights (6-12 hour flight duration).

  • What are the most popular destinations in the United States?

    Based on KAYAK flight searches, the most popular destination is New York (22% of total searches to the United States). The next most popular destinations are Orlando (9%) and Fort Lauderdale (7%). Searches for flights to Las Vegas (7%), to Houston (6%) and to Miami (5%) are also popular.

Everything you need to know for your flight to the United States

Cabin class types available on flights to Kentucky

Cabin classes available on flights to Kentucky. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to the United Statesfrom $279
Business Class flights to the United Statesfrom $389
Prem Econ Class flights to the United Statesfrom $118
Economy Class flights to the United Statesfrom $45