Trip.com
>
Flights
>
Flights to United States
>
Flights to Maine
>
Flights to Portland
Hotels in Portland
>
Flights from Kalispell to Portland

Hi, I've summed up all the key info for Kalispell to Portland flights

Cheapest round-trip

US$ 616
United Airlines Thu, Oct 1

When to fly

November Cheapest month
October Peak month

To secure the best rates, booking 40 days in advance is recommended, and the cheapest travel days are Tuesday, Wednesday, and Saturday .

Updated 3d ago · This content is an AI-powered summary based on Trip.com data. Prices and availability are subject to change. Please refer to actual prices, availability, and travel conditions.

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

      • FCA 12:26
        7h 20m
        1 stop
        PWM 21:46
        Kalispell - Portland | Thu, Oct 1 | United Airlines
        PWM 06:00
        7h 28m
        1 stop
        FCA 11:28
        Portland - Kalispell | Wed, Oct 7 | United Airlines
        US$616 US$1,345
        54% off
        54% off
        US$1,345 US$616
      • FCA 12:26
        7h 20m
        1 stop
        PWM 21:46
        Kalispell - Portland | Sat, Sep 26 | United Airlines
        PWM 06:00
        7h 28m
        1 stop
        FCA 11:28
        Portland - Kalispell | Fri, Oct 2 | United Airlines
        US$733 US$1,345
        46% off
        46% off
        US$1,345 US$733
      • FCA 12:35
        6h 48m
        1 stop
        PWM 21:23
        Kalispell - Portland | Sun, Sep 20 | United Airlines
        PWM 06:00
        16h 2m
        1 stop
        FCA 20:02
        Portland - Kalispell | Sat, Sep 26 | United Airlines
        US$748 US$1,345
        44% off
        44% off
        US$1,345 US$748
      • FCA 13:34
        8h 13m
        1 stop
        PWM 23:47
        Kalispell - Portland | Sat, Sep 19 | American Airlines
        PWM 06:30
        8h 14m
        1 stop
        FCA 12:44
        Portland - Kalispell | Fri, Sep 25 | American Airlines
        US$805
        40% off
        US$1,345 US$805
      • FCA 06:05
        7h 57m
        1 stop
        PWM 16:02
        Kalispell - Portland | Thu, Sep 24 | United Airlines
        PWM 06:00
        16h 2m
        1 stop
        FCA 20:02
        Portland - Kalispell | Sat, Sep 26 | United Airlines
        US$860
        36% off
        US$1,345 US$860
      • FCA 06:20
        7h 31m
        1 stop
        PWM 15:51
        Kalispell - Portland | Tue, Sep 15 | United Airlines
        PWM 15:37
        7h 44m
        1 stop
        FCA 21:21
        Portland - Kalispell | Mon, Sep 21 | United Airlines
        US$861
        36% off
        US$1,345 US$861
      • FCA 13:34
        8h 13m
        1 stop
        PWM 23:47
        Kalispell - Portland | Tue, Sep 22 | American Airlines
        PWM 06:30
        8h 14m
        1 stop
        FCA 12:44
        Portland - Kalispell | Mon, Sep 28 | American Airlines
        US$911
        32% off
        US$1,345 US$911
      • FCA 06:05
        7h 57m
        1 stop
        PWM 16:02
        Kalispell - Portland | Thu, Oct 8 | United Airlines
        PWM 15:45
        7h 51m
        1 stop
        FCA 21:36
        Portland - Kalispell | Thu, Oct 15 | United Airlines
        US$985
        27% off
        US$1,345 US$985
      • FCA 12:26
        7h 28m
        1 stop
        PWM 21:54
        Kalispell - Portland | Tue, Oct 6 | United Airlines
        PWM 15:45
        7h 51m
        1 stop
        FCA 21:36
        Portland - Kalispell | Mon, Oct 12 | United Airlines
        US$1,014
        25% off
        US$1,345 US$1,014
      • FCA 13:58
        7h 42m
        1 stop
        PWM 23:40
        Kalispell - Portland | Tue, Oct 6 | American Airlines
        PWM 07:00
        8h 42m
        1 stop
        FCA 13:42
        Portland - Kalispell | Mon, Oct 12 | American Airlines
        US$1,250
        7% off
        US$1,345 US$1,250
      • FCA 13:00
        17h 25m
        1 stop
        PWM 14:00
        Kalispell - Portland | Mon, Sep 14 | Normal Airline
        PWM 15:00
        6h
        Nonstop
        FCA 16:00
        Portland - Kalispell | Wed, Sep 16 | Normal Airline
        More cheap flights
        More cheap flights
      • FCA 13:00
        17h 25m
        1 stop
        PWM 14:00
        Kalispell - Portland | Mon, Sep 14 | Normal Airline
        Search
        Search
      • FCA 13:00
        17h 25m
        1 stop
        PWM 14:00
        Kalispell - Portland | Mon, Sep 14 | Normal Airline
        Search
        Search
      • FCA 13:00
        17h 25m
        1 stop
        PWM 14:00
        Kalispell - Portland | Mon, Sep 14 | Normal Airline
        Search
        Search
      • FCA 13:00
        17h 25m
        1 stop
        PWM 14:00
        Kalispell - Portland | Mon, Sep 14 | Normal Airline
        Search
        Search
      • FCA 13:00
        17h 25m
        1 stop
        PWM 14:00
        Kalispell - Portland | Mon, Sep 14 | Normal Airline
        Search
        Search
      • FCA 13:00
        17h 25m
        1 stop
        PWM 14:00
        Kalispell - Portland | Mon, Sep 14 | Normal Airline
        Search
        Search
      • FCA 13:00
        17h 25m
        1 stop
        PWM 14:00
        Kalispell - Portland | Mon, Sep 14 | Normal Airline
        Search
        Search
      • FCA 13:00
        17h 25m
        1 stop
        PWM 14:00
        Kalispell - Portland | Mon, Sep 14 | Normal Airline
        Search
        Search
      • FCA 13:00
        17h 25m
        1 stop
        PWM 14:00
        Kalispell - Portland | Mon, Sep 14 | Normal Airline
        Search
        Search

Kalispell to Portland Flight Information

The distance between Kalispell and Portland is about 3,387.75 km. Based on Trip.com's latest data, travel demand is highest in October. The off-season for travel is November.

Cheapest return ticket price US$616
Cheapest month November
Peak season for travel October
Flight distance 3,387.75 km
Flight statistics for the Kalispell–Portland route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • When is the best time to book flights from Kalispell to Portland?

    By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Kalispell to Portland is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Kalispell to Portland, you can use various tools on Trip.com:
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Portland travel is around October.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Kalispell to Portland is November, when demand for travel is lower.
  • After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Kalispell to Portland on September 24, 2026 with American Airlines, with prices starting at US$623.
  • The time difference between Portland and Kalispell is 2h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Kalispell to Portland is US$459. Fares vary by travel date, airline and availability.
  • Enter Kalispell and Portland, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

Explore More Popular Flights

Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.