Cheap Flights from Ontario International to Billings

Compare Ontario International to Billings flight deals

Find the cheapest month or even day of the year to fly to Billings

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Flight deals from Ontario International Airport to Billings Airport

Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Billings Airport? If you want to travel next month, return fares start from R 5,118. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Ontario International to Billings

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Billings flights are currently cheapest in July.

Ontario International to Billings: Alternative routes

Compare routes from Ontario International to Billings below. You may find an airport to fly into that's cheaper, faster, or easier than Billings.

Ontario to Billings: Flight information

The things to know before you go.
Cheapest flight foundR 3,051
Cheapest month to flyJuly

Finding cheap flights from Ontario International to Billings: Frequently asked questions

The best price we found for a return flight from Ontario International to Billings is R 5,118. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Ontario International to Billings. But we found flights with one or more stops from R 5,118.
As of March 2026, there are no flights flying from Ontario International to Billings.
The cheapest month to fly from Ontario International to Billings is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Billings Airport on Thursday, 23 April 2026.
No airlines currently offer direct flights between Ontario International Airport and Billings Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Billings but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Billings is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to Billings.

Flying from Ontario International Airport (ONT) to Billings Logan International Airport (BIL): what you need to know

  • Arrive at the airport on time so you don't miss your ONT to BIL flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to prevent a last-minute sprint to your gate.

  • You can expect longer queues in popular months like August. Arriving up to four hours in advance for an international flight and two hours for domestic departures is a wise move.

  • If you want to split up your journey, simply deselect 'Direct flights only' when searching for your ticket from Ontario International Airport to Billings Logan International Airport. These are the most popular stopovers between ONT and BIL:

    • Phoenix Sky Harbour International Airport

    • Denver International Airport

    • Harry Reid Airport (formerly McCarran Airport)

How to find the cheapest flights from Ontario International Airport (ONT) to Billings Logan International Airport (BIL)

  • Currently, R 3,051 is the lowest price we've found for a one-way Ontario International Airport to Billings Logan International Airport flight. The best price for a return plane ticket is R 5,118. Keep in mind that fares can change due to availability when booking.

  • It's a good idea to book in advance if you want to get cheap tickets from ONT to BIL. That's because airlines adjust prices based on demand, which tends to rise closer to departure.

  • Finding cheap flights from Ontario International Airport to Billings Logan International Airport is easy if you're flexible with your travel plans. Use the 'Whole month' search tool to see the best prices across every month and score a great deal.

  • Landing cheap flights from ONT to BIL is easy with Price Alerts. Simply create one of these automatic alerts and we'll let you know as soon as a new discounted fare appears.

  • Choose your preferred arrival and departure times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to get the best deals on flights from Ontario International Airport to Billings Logan International Airport.

Handy information about Ontario International Airport (ONT)

  • ONT is located at 2900 E. Airport Drive.

  • 83.6% of flights leaving Ontario International Airport touch down at their destination on schedule. Given its impressive on-time stats, you're unlikely to experience delays when taking off from ONT.

  • Ontario International Airport is about 6 kilometres from central Ontario. If you're driving, catching a cab or ride-sharing from the centre, it'll take you 10 minutes or so to arrive, depending on the traffic.

  • You can expect a trip time of about 1 hour 30 minutes when using public transport.

  • Catching an early flight from Ontario International Airport to Billings Logan International Airport? Avoid the stress of rushing to the terminal (and sneak in some extra precious sleep) by choosing one of these hotels close to ONT:

Arriving at Billings Logan International Airport (BIL)

Getting from Billings Logan International Airport (BIL) to central Billings

  • The address for BIL is 1901 Terminal Circle, Room 216.

  • Billings Logan International Airport to central Billings has a drive time of around 10 minutes. It's approximately 5 kilometres away.

  • Travelling by public transport will take you around 25 minutes.

When to fly to Billings Logan International Airport (BIL)

  • July is the busiest month for flights from Ontario International Airport to Billings Logan International Airport. To skip the crowds, visit Billings in February.

  • When booking your flight from Ontario International Airport to Billings Logan International Airport, consider the kind of weather you enjoy. July is the warmest month in Billings, with the temperature ranging from 14ºC (57ºF) to 34ºC (93ºF).

  • Look for cheap tickets from ONT to BIL in February if you like cooler conditions. Temperatures are at their lowest then, ranging between -18ºC (0ºF) and 8ºC (46ºF) on average.

Explore more of United States

  • Rapid City is just one of the many places in United States waiting to be explored after you've seen Billings. Around 451 kilometres away to the south-east, top sights here include Dinosaur Park, Storybook Island and Museum of Geology.

  • Missoula is another well-known destination in United States and is around 434 kilometres west of Billings. No trip is complete without a visit to A Carousel for Missoula, Brennan's Wave and Missoula Art Museum.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.