Cheap flights from Porto to Mountain States

View AU$1,156 flight on Mon, 8 Sep. 2025Opens in a new window

Popular airlines from Porto to Mountain States

  • American Airlines

    American Airlines

  • Air Canada

    Air Canada

  • British Airways

    British Airways

  • Delta

    Delta

  • Iberia

    Iberia

  • KLM

    KLM

  • Lufthansa

    Lufthansa

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Porto (OPO) to Mountain States (DEN)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Mon, 8 Sep. - Sun, 14 Sep.
OPO
Porto
LAS
Las Vegas
AU$1,388 Return, found 21 hours ago
AU$1,388
Return
found 21 hours ago
Select Lufthansa flight, departing Mon, 8 Sep. from Porto to Las Vegas, returning Sun, 14 Sep., priced at AU$1,388 found 21 hours ago
United
Mon, 8 Sep. - Sun, 14 Sep.
OPO
Porto
LAS
Las Vegas
AU$1,391 Return, found 21 hours ago
AU$1,391
Return
found 21 hours ago
Select United flight, departing Mon, 8 Sep. from Porto to Las Vegas, returning Sun, 14 Sep., priced at AU$1,391 found 21 hours ago
Lufthansa
Mon, 8 Sep. - Sun, 14 Sep.
OPO
Porto
LAS
Las Vegas
AU$1,415 Return, found 21 hours ago
AU$1,415
Return
found 21 hours ago
Select Lufthansa flight, departing Mon, 8 Sep. from Porto to Las Vegas, returning Sun, 14 Sep., priced at AU$1,415 found 21 hours ago
Delta
Mon, 8 Sep. - Sun, 14 Sep.
OPO
Porto
LAS
Las Vegas
AU$1,428 Return, found 21 hours ago
AU$1,428
Return
found 21 hours ago
Select Delta flight, departing Mon, 8 Sep. from Porto to Las Vegas, returning Sun, 14 Sep., priced at AU$1,428 found 21 hours ago
Brussels Airlines
Mon, 8 Sep. - Sun, 14 Sep.
OPO
Porto
LAS
Las Vegas
AU$1,495 Return, found 21 hours ago
AU$1,495
Return
found 21 hours ago
Select Brussels Airlines flight, departing Mon, 8 Sep. from Porto to Las Vegas, returning Sun, 14 Sep., priced at AU$1,495 found 21 hours ago
KLM
Mon, 8 Sep. - Sun, 14 Sep.
OPO
Porto
LAS
Las Vegas
AU$1,498 Return, found 21 hours ago
AU$1,498
Return
found 21 hours ago
Select KLM flight, departing Mon, 8 Sep. from Porto to Las Vegas, returning Sun, 14 Sep., priced at AU$1,498 found 21 hours ago
*Available to Expedia members.