Cheap Flights from Missoula to Ontario

FAQ

• What are the cheapest flights from Missoula to Ontario (MSO-ONT)?

  Based on Trip.com data, Allegiant Air offers one-way fares as low as €69 on Cheapest nonstop routes (e.g. MSO to ONT on Mon, Sep 29), while Allegiant Air offers Cheapest nonstop round-trips from €179 departing on Fri, Oct 3 and returning on Mon, Oct 6.

• When is the best time to book flights from Missoula to Ontario?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Missoula to Ontario 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.

• How can I find the best deals on flights from Missoula to Ontario?

  To find best deals on flights from Missoula to Ontario, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Sep 29, with one-way flights priced at just €69.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Allegiant Air.
  · 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 Ontario travel is around October.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Missoula (MSO) to Ontario (ONT) the cheapest?

  The cheapest months to fly from Missoula to Ontario is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Missoula to Ontario on?

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Missoula to Ontario on September 24, 2025 with Hawaiian Airlines, with prices starting at €183.

• Is there any time difference between Missoula and Ontario?

  The time difference between Ontario and Missoula is 1h.

• How do I change or cancel my ticket from Missoula to Ontario?

  Tickets can only be changed or cancelled 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.