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Flights from Seattle to Louisville

Flight Info | Seattle to Louisville

The distance between Seattle and Louisville is approximately 3,121.93 km. Based on Trip.com's data, travel demand peaks in July.

Cheapest one-way
$144
Delta Air Lines Delta Air Lines SEA-SDF 8h 56m · 1 stop Thu, Sep 3
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Cheapest round-trip
$312
American Airlines American Airlines SEA-SDF 6h 33m · 2 stops Tue, Oct 13 - Thu, Oct 15
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Recommended airlines
Delta Air Lines Delta Air Lines Cheapest · From $144 United Airlines United Airlines Most booked
When to travel
November
Cheapest
July
Peak season for travel
Route details
3,121.93 km
Flight distance

Find flight deals from Seattle to Louisville for the next 3 months. Book one way flights from $516 or round trip flights from $312.

      • SEA 11:59 PM
        6h 33m
        1 stop
        SDF 9:32 AM
        Seattle - Louisville | Tue, Oct 13 | American Airlines
        SDF 6:00 PM
        8h 10m
        1 stop
        SEA 11:10 PM
        Louisville - Seattle | Thu, Oct 15 | American Airlines
        $312 $598
        48% off
        48% off
        $598 $312
      • SEA 6:00 AM
        7h 54m
        1 stop
        SDF 4:54 PM
        Seattle - Louisville | Tue, Oct 13 | Delta Air Lines
        SDF 12:40 PM
        7h 18m
        1 stop
        SEA 4:58 PM
        Louisville - Seattle | Thu, Oct 15 | Delta Air Lines
        $329 $598
        45% off
        45% off
        $598 $329
      • SEA 11:14 PM
        8h 4m
        1 stop
        SDF 10:18 AM
        Seattle - Louisville | Tue, Oct 13 | United Airlines
        SDF 8:05 AM
        8h 38m
        1 stop
        SEA 1:43 PM
        Louisville - Seattle | Thu, Oct 15 | Delta Air Lines
        $375 $598
        37% off
        37% off
        $598 $375
      • SEA 6:18 AM
        6h 47m
        1 stop
        SDF 4:05 PM
        Seattle - Louisville | Tue, Sep 15 | American Airlines
        SDF 7:35 PM
        7h 32m
        1 stop
        SEA 12:07 AM
        Louisville - Seattle | Sun, Sep 20 | American Airlines
        $383
        36% off
        $598 $383
      • SEA 10:59 PM
        6h 52m
        1 stop
        SDF 8:51 AM
        Seattle - Louisville | Tue, Sep 15 | Delta Air Lines
        SDF 5:55 PM
        9h 3m
        1 stop
        SEA 11:58 PM
        Louisville - Seattle | Sun, Sep 20 | Delta Air Lines
        $396
        34% off
        $598 $396
      • SEA 5:00 AM
        9h 23m
        1 stop
        SDF 5:23 PM
        Seattle - Louisville | Mon, Sep 7 | American Airlines
        SDF 2:47 PM
        9h 49m
        1 stop
        SEA 9:36 PM
        Louisville - Seattle | Thu, Sep 10 | American Airlines
        $443
        26% off
        $598 $443
      • SEA 11:59 PM
        8h 55m
        1 stop
        SDF 11:54 AM
        Seattle - Louisville | Mon, Sep 7 | Delta Air Lines
        SDF 6:30 AM
        7h 9m
        1 stop
        SEA 10:39 AM
        Louisville - Seattle | Thu, Sep 10 | Delta Air Lines
        $458
        23% off
        $598 $458
      • SEA 11:06 AM
        9h 21m
        1 stop
        SDF 11:27 PM
        Seattle - Louisville | Tue, Oct 13 | Alaska Airlines
        SDF 6:39 PM
        8h 20m
        1 stop
        SEA 11:59 PM
        Louisville - Seattle | Thu, Oct 15 | Delta Air Lines
        $473
        21% off
        $598 $473
      • SEA 7:40 AM
        7h 38m
        1 stop
        SDF 6:18 PM
        Seattle - Louisville | Fri, Aug 28 | American Airlines
        SDF 5:53 PM
        7h 24m
        1 stop
        SEA 10:17 PM
        Louisville - Seattle | Sun, Aug 30 | American Airlines
        $478
        20% off
        $598 $478
      • SEA 1:00 PM
        17h 25m
        1 stop
        SDF 2:00 PM
        Seattle - Louisville | Fri, Aug 21 | Normal Airline
        SDF 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        Louisville - Seattle | Sun, Aug 23 | Normal Airline
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      • Cheapest nonstop
        SEA 1:50 PM
        7h 5m
        Nonstop
        SDF 11:55 PM
        Seattle - Louisville | Fri, Aug 21 | Hahn Air
        $516 $645
        20% off
        20% off
        $645 $516
      • SEA 11:59 PM
        8h 56m
        1 stop
        SDF 11:55 AM
        Seattle - Louisville | Thu, Sep 3 | Delta Air Lines
        $144 $645
        78% off
        78% off
        $645 $144
      • SEA 6:00 AM
        8h 10m
        1 stop
        SDF 5:10 PM
        Seattle - Louisville | Sat, Oct 3 | Delta Air Lines
        $145 $645
        78% off
        78% off
        $645 $145
      • SEA 10:35 PM
        8h 57m
        1 stop
        SDF 10:32 AM
        Seattle - Louisville | Mon, Sep 7 | Delta Air Lines
        $145
        78% off
        $645 $145
      • SEA 7:00 AM
        10h 13m
        1 stop
        SDF 8:13 PM
        Seattle - Louisville | Sat, Oct 3 | United Airlines
        $148
        77% off
        $645 $148
      • SEA 11:59 PM
        10h 8m
        1 stop
        SDF 1:07 PM
        Seattle - Louisville | Thu, Sep 3 | United Airlines
        $148
        77% off
        $645 $148
      • SEA 7:16 AM
        9h 17m
        1 stop
        SDF 7:33 PM
        Seattle - Louisville | Fri, Sep 4 | Delta Air Lines
        $148
        77% off
        $645 $148
      • SEA 5:10 AM
        9h 49m
        1 stop
        SDF 5:59 PM
        Seattle - Louisville | Fri, Sep 4 | American Airlines
        $153
        76% off
        $645 $153
      • SEA 6:05 AM
        6h 45m
        1 stop
        SDF 3:50 PM
        Seattle - Louisville | Tue, Sep 8 | Delta Air Lines
        $157
        76% off
        $645 $157
      • SEA 6:00 AM
        8h 19m
        1 stop
        SDF 5:19 PM
        Seattle - Louisville | Fri, Sep 25 | Delta Air Lines
        $173
        73% off
        $645 $173
      • SEA 11:57 PM
        6h 46m
        1 stop
        SDF 9:43 AM
        Seattle - Louisville | Sun, Sep 20 | American Airlines
        $173
        73% off
        $645 $173
      • SEA 1:00 PM
        17h 25m
        1 stop
        SDF 2:00 PM
        Seattle - Louisville | Fri, Aug 21 | Normal Airline
        Find more flights
        Find more flights

Popular airlines from Seattle to Louisville

You can choose from 2 airlines that fly from Seattle to Louisville, including United Airlines, Delta Air Lines, Delta Air Lines has lowest fares on this route.
United Airlines logo United Airlines
Delta Air Lines logo Delta Air Lines
Airlines are determined based on actual purchased flight tickets from Seattle to Louisville according to previous 12 months data from Trip.com.

Frequently Asked Questions

  • What are the cheapest flights from Seattle to Louisville (SEA-SDF)?

    Based on Trip.com data, Delta Air Lines offers one-way fares as low as $144 on Cheapest nonstop routes (e.g. SEA to SDF on Thu, Sep 3), while American Airlines offers Cheapest nonstop round-trips from $312 departing on Tue, Oct 13 and returning on Thu, Oct 15.
  • At the moment, several airlines serve connecting flights from Seattle to Louisville, including: United Airlines Delta Air Lines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Louisville is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 1 flight per week flying from Seattle to Louisville. You can check the weekly schedule for popular airlines on this route below: United Airlines: -/-/-/-/-/-/- -- UA1479 (05:11)
  • To find best deals on flights from Seattle to Louisville, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Sep 3, with one-way flights priced at just $144.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Hahn Air.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Louisville travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Seattle to Louisville is November, when demand for travel is lower.
  • After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Seattle to Louisville on August 21, 2026 with Delta Air Lines, with prices starting at $150.
  • You can land at any one of the following hubs in Louisville, with Seattle-Tacoma International Airport to Louisville International Airport (SEA-SDF) is by far the most common option on this route: Louisville International Airport (SDF).
  • The time difference between Louisville and Seattle is 3h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Seattle to Louisville is $268. Fares vary by travel date, airline and availability.
  • Enter Seattle and Louisville, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.