Austin (AUS) to Porto (OPO) flights from USD793

*Modifying this information may result in a different fare

*All amounts are in USD. Taxes and surcharges are included. No booking fee is applicable. Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional baggage fees may apply.

Why book directly on the KLM website?

Explore the benefits of booking through our website.

No hidden costs icon

No hidden costs

Book with confidence. Our rates hide no unpleasant surprises.

24/7 customer service icon

24/7 customer service

Count on direct, personal support whenever you need it, day or night.

Seamless travel icon

Seamless travel

Enjoy a smooth journey with timely updates and automatic rebooking.

Lowest fares between Austin and Porto

cmp-daily-histogram-bars-legend-min-price-aria-label USD928
cmp-daily-histogram-bars-legend-max-price-aria-label USD1.7K
Displaying fares for August-2026
  • AUS–OPO, 08/16/2026 – 09/06/2026: From USD1,035
    16

    Su

    AUG

  • AUS–OPO, 08/17/2026 – 08/24/2026: From USD1,025
    17

    Mo

  • AUS–OPO, 08/18/2026 – 09/15/2026: From USD975
    18

    Tu

  • AUS–OPO, 08/19/2026 – 08/26/2026: From USD979
    19

    We

  • AUS–OPO, 08/20/2026 – 09/10/2026: From USD1,029
    20

    Th

  • AUS–OPO, 08/21/2026 – 08/28/2026: From USD1,039
    21

    Fr

  • AUS–OPO, 08/22/2026 – 08/29/2026: From USD1,202
    22

    Sa

  • AUS–OPO, 08/23/2026 – 08/30/2026: From USD1,142
    23

    Su

  • AUS–OPO, 08/24/2026 – 08/31/2026: From USD1,132
    24

    Mo

  • AUS–OPO, 08/25/2026 – 09/15/2026: From USD1,082
    25

    Tu

  • AUS–OPO, 08/26/2026 – 09/02/2026: From USD1,086
    26

    We

  • AUS–OPO, 08/27/2026 – 09/24/2026: From USD1,146
    27

    Th

  • AUS–OPO, 08/28/2026 – 09/11/2026: From USD1,152
    28

    Fr

  • AUS–OPO, 08/29/2026 – 09/05/2026: From USD1,206
    29

    Sa

  • AUS–OPO, 08/30/2026 – 09/06/2026: From USD1,146
    30

    Su

  • AUS–OPO, 08/31/2026 – 09/14/2026: From USD1,136
    31

    Mo

  • AUS–OPO, 09/01/2026 – 09/22/2026: From USD1,090
    01

    Tu

    SEP

  • AUS–OPO, 09/02/2026 – 09/16/2026: From USD1,394
    02

    We

  • AUS–OPO, 09/03/2026 – 09/10/2026: From USD1,262
    03

    Th

  • AUS–OPO, 09/04/2026 – 09/11/2026: From USD1,676
    04

    Fr

  • AUS–OPO, 09/05/2026 – 09/12/2026: From USD1,216
    05

    Sa

  • AUS–OPO, 09/06/2026 – 09/20/2026: From USD1,153
    06

    Su

  • AUS–OPO, 09/07/2026 – 09/28/2026: From USD1,136
    07

    Mo

  • AUS–OPO, 09/08/2026 – 09/15/2026: From USD1,090
    08

    Tu

  • AUS–OPO, 09/09/2026 – 09/23/2026: From USD1,090
    09

    We

  • AUS–OPO, 09/10/2026 – 09/17/2026: From USD1,146
    10

    Th

  • AUS–OPO, 09/11/2026 – 09/18/2026: From USD1,276
    11

    Fr

  • AUS–OPO, 09/12/2026 – 09/19/2026: From USD1,061
    12

    Sa

  • AUS–OPO, 09/13/2026 – 09/20/2026: From USD1,075
    13

    Su

  • AUS–OPO, 09/14/2026 – 09/28/2026: From USD974
    14

    Mo

  • AUS–OPO, 09/15/2026 – 10/13/2026: From USD928
    15

    Tu

  • RangeUSD928-USD1,676