Flights from Chicago, IL to Portland, OR

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Best Deals on Flights From Chicago, IL (ORD) to Portland, OR (PDX)

Sep 2026
from$178*
Last seen: 8 hours ago
One-way/Economy
Oct 2026
from$163*
Last seen: 11 hours ago
One-way/Economy
Nov 2026
from$138*
Last seen: 7 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $163
Displaying fares for September-2026
  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    23

    Wed

    SEP

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    24

    Thu

  • ORD–PDX, Sep 25, 2026: from $185
    25

    Fri

  • ORD–PDX, Sep 26, 2026: from $184
    26

    Sat

  • ORD–PDX, Sep 27, 2026: from $185
    27

    Sun

  • ORD–PDX, Sep 28, 2026: from $185
    28

    Mon

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    29

    Tue

  • ORD–PDX, Sep 30, 2026: from $178
    30

    Wed

  • ORD–PDX, Oct 1, 2026: from $231
    01

    Thu

    OCT

  • ORD–PDX, Oct 2, 2026: from $191
    02

    Fri

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    03

    Sat

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    04

    Sun

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    05

    Mon

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    06

    Tue

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    07

    Wed

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    08

    Thu

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    09

    Fri

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    10

    Sat

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    11

    Sun

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    12

    Mon

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    13

    Tue

  • ORD–PDX, Oct 14, 2026: from $163
    14

    Wed

  • ORD–PDX, Oct 15, 2026: from $231
    15

    Thu

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    16

    Fri

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    17

    Sat

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    18

    Sun

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    19

    Mon

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    20

    Tue

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    21

    Wed

  • ORD–PDX: cmp-view-offers-disclaimer. Find Offers
    22

    Thu

    • Range$163-$231

    *Prices found by others in the previous 48 hours for round-trip flights. Prices shown may also require membership in our travel club, Discount Den.

    Flights Deals from Chicago, IL to Portland, OR on Frontier

    $
    *Prices found by others in the previous 48 hours for one-way flights. Prices shown may also require membership in our travel club, Discount Den®.

    Chicago, IL Portland, OR

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