Southwest® flights from Portland, ME to Las Vegas from $188

Promo Code

Low fares from Portland, ME to Las Vegas

$

Portland, ME (PWM)to

Las Vegas (LAS)
Depart: 10/21/2026

One-way

Basic

From
$188
Seen: 14 hrs ago

Portland, ME (PWM)to

Las Vegas (LAS)
Depart: 08/22/2026

One-way

Basic

From
$228
Seen: 23 hrs ago

Portland, ME (PWM)to

Las Vegas (LAS)
Depart: 10/21/2026

One-way

Choice

From
$243
Seen: 14 hrs ago

Portland, ME (PWM)to

Las Vegas (LAS)
Depart: 09/17/2026

One-way

Basic

From
$271
Seen: 12 hrs ago

Portland, ME (PWM)to

Las Vegas (LAS)
Depart: 10/14/2026

One-way

Basic

From
$276
Seen: 11 hrs ago

Portland, ME (PWM)to

Las Vegas (LAS)
Depart: 08/22/2026

One-way

Choice

From
$283
Seen: 23 hrs ago

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Explore flights from Portland, ME to Las Vegas

Aug 2026
From$228*
Seen: 23 hrs ago
One Way/Basic
Sep 2026
From$271*
Seen: 12 hrs ago
One Way/Basic
Oct 2026
From$188*
Seen: 14 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $228
Displaying fares for August-2026
  • PWM–LAS: cmp-view-offers-disclaimer. Find Offers
    03

    Mon

    AUG

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    04

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  • PWM–LAS, 08/06/2026: From $345
    06

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    07

    Fri

  • PWM–LAS, 08/08/2026: From $444
    08

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  • PWM–LAS, 08/10/2026: From $504
    10

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    19

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    20

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    21

    Fri

  • PWM–LAS, 08/22/2026: From $228
    22

    Sat

  • PWM–LAS, 08/23/2026: From $355
    23

    Sun

  • PWM–LAS, 08/24/2026: From $305
    24

    Mon

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    25

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    28

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    29

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    30

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    31

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    SEP

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    • Range$228-$504

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

    Flight Details

    Departing from:
    Portland International Jetport
    Arriving at:
    McCarran International Airport
    Distance:
    2410 miles

    Route Information

    88† Weekly flights

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    There are 88 weekly flights from Portland, ME to Las Vegas on Southwest Airlines.
    To find the lowest fares by day and time to fly Portland, ME to Las Vegas with Southwest, check out our Low Fare Calendar.
    You can rent a car at McCarran International Airport book yours with your flight.
    Yes! Flights from Portland, ME to Las Vegas—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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