American Airlines flights from Knoxville to Lisbon

Recent searches for flights from Knoxville to Lisbon

Aug 2026
From$1,027*
Updated: 5 hours ago
Round tripIEconomy
Sep 2026
From$923*
Updated: 5 hours ago
Round tripIEconomy
Oct 2026
From$748*
Updated: 5 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $1.0K
cmp-daily-histogram-bars-legend-max-price-aria-label $4.3K
Displaying fares for August-2026
  • TYS–LIS: cmp-view-offers-disclaimer. Find Offers
    15

    Sa

    AUG

  • TYS–LIS, 08/16/26 – 08/23/26: From $1,106
    16

    Su

  • TYS–LIS, 08/17/26 – 08/24/26: From $1,087
    17

    Mo

  • TYS–LIS, 08/18/26 – 08/25/26: From $1,027
    18

    Tu

  • TYS–LIS, 08/19/26 – 08/26/26: From $1,027
    19

    We

  • TYS–LIS, 08/20/26 – 08/27/26: From $1,087
    20

    Th

  • TYS–LIS, 08/21/26 – 08/28/26: From $1,087
    21

    Fr

  • TYS–LIS, 08/22/26 – 08/29/26: From $1,323
    22

    Sa

  • TYS–LIS, 08/23/26 – 08/30/26: From $1,379
    23

    Su

  • TYS–LIS, 08/24/26 – 08/31/26: From $1,234
    24

    Mo

  • TYS–LIS, 08/25/26 – 09/01/26: From $1,174
    25

    Tu

  • TYS–LIS, 08/26/26 – 09/02/26: From $1,174
    26

    We

  • TYS–LIS, 08/27/26 – 09/03/26: From $1,244
    27

    Th

  • TYS–LIS, 08/28/26 – 09/04/26: From $1,244
    28

    Fr

  • TYS–LIS, 08/29/26 – 09/05/26: From $4,279
    29

    Sa

  • TYS–LIS, 08/30/26 – 09/06/26: From $2,073
    30

    Su

  • TYS–LIS, 08/31/26 – 09/07/26: From $4,265
    31

    Mo

  • TYS–LIS, 09/01/26 – 09/08/26: From $3,765
    01

    Tu

    SEP

  • TYS–LIS, 09/02/26 – 09/09/26: From $2,256
    02

    We

  • TYS–LIS, 09/03/26 – 09/10/26: From $3,007
    03

    Th

  • TYS–LIS, 09/04/26 – 09/11/26: From $2,834
    04

    Fr

  • TYS–LIS, 09/05/26 – 09/12/26: From $2,784
    05

    Sa

  • TYS–LIS, 09/06/26 – 09/13/26: From $3,245
    06

    Su

  • TYS–LIS, 09/07/26 – 09/14/26: From $1,974
    07

    Mo

  • TYS–LIS, 09/08/26 – 09/15/26: From $1,914
    08

    Tu

  • TYS–LIS, 09/09/26 – 09/16/26: From $2,040
    09

    We

  • TYS–LIS, 09/10/26 – 09/17/26: From $1,957
    10

    Th

  • TYS–LIS, 09/11/26 – 09/18/26: From $2,837
    11

    Fr

  • TYS–LIS, 09/12/26 – 09/19/26: From $2,175
    12

    Sa

  • TYS–LIS, 09/13/26 – 09/20/26: From $1,818
    13

    Su

  • TYS–LIS, 09/14/26 – 09/21/26: From $1,130
    14

    Mo

    • range$1,027-$4,279

    DisclaimerFares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Fares listed may be Basic Economy, which class is subject to additional terms and conditions. Additional baggage fees and charges for optional products and services may apply.

    Find deals on Knoxville to Lisbon flights

    $
    keyboard_arrow_down

    Knoxville (TYS)to

    Lisbon (LIS)
    12/01/26 - 12/08/26

    Round trip

    Economy

    from
    $739Fare subject to changes
    Updated: 5 hours ago

    Knoxville (TYS)to

    Lisbon (LIS)
    12/08/26 - 12/15/26

    Round trip

    Economy

    from
    $739Fare subject to changes
    Updated: 5 hours ago

    Knoxville (TYS)to

    Lisbon (LIS)
    11/11/26 - 11/18/26

    Round trip

    Economy

    from
    $739Fare subject to changes
    Updated: 5 hours ago

    Knoxville (TYS)to

    Lisbon (LIS)
    11/17/26 - 11/24/26

    Round trip

    Economy

    from
    $739Fare subject to changes
    Updated: 5 hours ago

    Knoxville (TYS)to

    Lisbon (LIS)
    12/02/26 - 12/09/26

    Round trip

    Economy

    from
    $739Fare subject to changes
    Updated: 5 hours ago

    Knoxville (TYS)to

    Lisbon (LIS)
    11/10/26 - 11/17/26

    Round trip

    Economy

    from
    $739Fare subject to changes
    Updated: 5 hours ago

    Knoxville (TYS)to

    Lisbon (LIS)
    12/09/26 - 12/16/26

    Round trip

    Economy

    from
    $739Fare subject to changes
    Updated: 5 hours ago

    Knoxville (TYS)to

    Lisbon (LIS)
    11/18/26 - 11/25/26

    Round trip

    Economy

    from
    $739Fare subject to changes
    Updated: 5 hours ago

    *Fares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Some fares listed may include one or more connections that are Basic Economy, which class is subject to additional terms and conditions. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Additional baggage fees and charges for optional products and services may apply.

    Finding cheap flights from Knoxville to Lisbon

    Looking for lower fares on your trip from Knoxville to Lisbon? Here are a few ways to save.

    • Book early: Booking 1 to 3 months ahead can help you find lower fares
    • Be flexible with dates: Midweek travel, like Tuesdays and Wednesdays, can be more affordable
    • Travel during less busy periods: Flying outside peak travel times can help find lower fares and avoid crowds

    Earn up to $500 back on your next American Airlines flight plus, 30,000 bonus miles. Offers vary elsewhere. Opens another site in a new window that may not meet accessibility guidelines.

    Upgrade your flight with Main Cabin Extra

    Make your trip more comfortable with Main Cabin Extra. Enjoy benefits like:

    • Extra legroom: More space with seats at the front of the Main Cabin or in exit rows.
    • Early boarding: Preferred Group 5 boarding allows easier access to overhead bins.
    • Complimentary drinks: Enjoy beer, wine and spirits on flights with full beverage service.

    Discover how Main Cabin Extra can enhance your trip.

    American Airlines flights from Knoxville to Lisbon