Austin (AUS) to Porto (OPO) flights from USD707

*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 USD707
cmp-daily-histogram-bars-legend-max-price-aria-label USD1.4K
Displaying fares for September-2026
  • AUS–OPO, 09/15/2026 – 09/22/2026: From USD1,086
    15

    Tu

    SEP

  • AUS–OPO, 09/16/2026 – 09/30/2026: From USD1,072
    16

    We

  • AUS–OPO, 09/17/2026 – 09/24/2026: From USD1,078
    17

    Th

  • AUS–OPO, 09/18/2026 – 09/25/2026: From USD1,282
    18

    Fr

  • AUS–OPO, 09/19/2026 – 10/10/2026: From USD1,107
    19

    Sa

  • AUS–OPO, 09/20/2026 – 09/27/2026: From USD1,060
    20

    Su

  • AUS–OPO, 09/21/2026 – 10/05/2026: From USD823
    21

    Mo

  • AUS–OPO, 09/22/2026 – 10/06/2026: From USD772
    22

    Tu

  • AUS–OPO, 09/23/2026 – 10/07/2026: From USD871
    23

    We

  • AUS–OPO, 09/24/2026 – 10/01/2026: From USD927
    24

    Th

  • AUS–OPO, 09/25/2026 – 10/02/2026: From USD948
    25

    Fr

  • AUS–OPO, 09/26/2026 – 10/10/2026: From USD900
    26

    Sa

  • AUS–OPO, 09/27/2026 – 10/04/2026: From USD1,306
    27

    Su

  • AUS–OPO, 09/28/2026 – 10/05/2026: From USD823
    28

    Mo

  • AUS–OPO, 09/29/2026 – 10/06/2026: From USD768
    29

    Tu

  • AUS–OPO, 09/30/2026 – 10/07/2026: From USD1,232
    30

    We

  • AUS–OPO, 10/01/2026 – 10/08/2026: From USD823
    01

    Th

    OCT

  • AUS–OPO, 10/02/2026 – 10/30/2026: From USD941
    02

    Fr

  • AUS–OPO, 10/03/2026 – 10/31/2026: From USD893
    03

    Sa

  • AUS–OPO, 10/04/2026 – 11/01/2026: From USD797
    04

    Su

  • AUS–OPO, 10/05/2026 – 11/02/2026: From USD783
    05

    Mo

  • AUS–OPO, 10/06/2026 – 11/03/2026: From USD747
    06

    Tu

  • AUS–OPO, 10/07/2026 – 11/04/2026: From USD733
    07

    We

  • AUS–OPO, 10/08/2026 – 11/05/2026: From USD1,017
    08

    Th

  • AUS–OPO, 10/09/2026 – 11/06/2026: From USD1,406
    09

    Fr

  • AUS–OPO, 10/10/2026 – 11/07/2026: From USD843
    10

    Sa

  • AUS–OPO, 10/11/2026 – 11/08/2026: From USD797
    11

    Su

  • AUS–OPO, 10/12/2026 – 11/02/2026: From USD783
    12

    Mo

  • AUS–OPO, 10/13/2026 – 11/03/2026: From USD713
    13

    Tu

  • AUS–OPO, 10/14/2026 – 11/04/2026: From USD707
    14

    We

  • RangeUSD707-USD1,406