Cheap Flights from Bellingham to Ontario International

Compare Bellingham to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals from Bellingham Airport to Ontario International Airport

Looking for a cheap last-minute deal or the best return flight from Bellingham to Ontario International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Bellingham to Ontario International

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

Bellingham to Ontario: Flight information

The things to know before you go.
Cheapest flight foundR 8,914
Cheapest month to flyMarch

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

The best price we found for a return flight from Bellingham to Ontario International is R 6,137. 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 Bellingham to Ontario International. But we found flights with one or more stops from R 6,137.
As of March 2026, there are no flights flying from Bellingham to Ontario International.
The cheapest month to fly from Bellingham to Ontario International is usually July.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Bellingham Airport to Ontario International Airport on Friday, 3 July 2026.
No airlines currently offer direct flights between Bellingham Airport and Ontario International 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 Ontario International 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 Ontario is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Allegiant Air offers the cheapest flight tickets to Ontario International.

Flying from Bellingham International Airport (BLI) to Ontario International Airport (ONT): what you need to know

  • Bellingham and Ontario follow the same timezone, UTC-7.

  • To ensure you catch your BLI to ONT flight, allow plenty of time to navigate the airport and find your gate. Arriving two hours before international departures and an hour before domestic flights is the standard rule.

  • During popular months like July, you'll want to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead for an international flight whenever you're flying during a peak period in general.

  • We make it easy to book a flight with a stopover. To see all your options for tickets from Bellingham International Airport to Ontario International Airport, deselect 'Direct flights only.' Then, choose a flight with a stop long enough to visit your chosen city. Top stopovers between BLI and ONT include:

    • Harry Reid Airport (formerly McCarran Airport)

    • Denver International Airport

    • Metropolitan Oakland International Airport

How to find the cheapest flights from Bellingham International Airport (BLI) to Ontario International Airport (ONT)

  • Currently, R 8,914 is the lowest price we've found for a one-way Bellingham International Airport to Ontario International Airport flight. The best price for a return ticket is R 6,137. Keep in mind that fares may change due to availability at the time of booking.

  • To score cheap tickets from BLI to ONT, book as early as you can. Airlines usually offer their best fares when flights are first released.

  • If you're flexible with your travel dates, try using the 'Whole month' search function. It'll show you the lowest price in each month when looking for a flight from Bellingham International Airport to Ontario International Airport.

  • Landing cheap flights from BLI to ONT couldn't be easier with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you as soon as fares go down.

  • Tailor your trip with filters. Choose your departure and arrival times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' flights from Bellingham International Airport to Ontario International Airport.

Handy information about Bellingham International Airport (BLI)

  • You'll find BLI at 4255 Mitchell Way.

  • Bellingham International Airport has a strong on-time record, making delays less likely. Departures from BLI land at their destination as scheduled 84.1% of the time.

  • Bellingham International Airport is about 10 kilometres from central Bellingham. If you're driving, catching a cab or ride-sharing from the centre, it'll take you 15 minutes or so to get there, depending on the traffic.

  • You can expect a trip time of roughly 25 minutes on public transport.

  • Catching an early flight from Bellingham International Airport to Ontario International Airport? Avoid the stress of rushing to the terminal (and catch some extra z's) by picking one of these stays near BLI:

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • ONT is located at 2900 E. Airport Drive.

  • Ontario International Airport to the centre of Ontario has a drive time of about 10 minutes. It's approximately 6 kilometres away.

  • If you're travelling by public transport, expect a journey of around 1 hour 30 minutes.

When to fly to Ontario International Airport (ONT)

  • August is the most popular month for flights from Bellingham International Airport to Ontario International Airport. For smaller crowds, head to Ontario in May.

  • The warmest month in Ontario is August, with temperatures ranging between 15ºC (59ºF) and 35ºC (95ºF). Book your flights from Bellingham International Airport to Ontario International Airport in this month if this is the kind of weather you like.

  • Look for cheap tickets from BLI to ONT in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 4ºC (39ºF) and 23ºC (73ºF) on average.

Explore more of United States

  • Los Angeles is just one of the many places in United States waiting to be discovered once you've seen Ontario. Around 56 kilometres away to the west, its best attractions include Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • San Diego is another must-experience destination in United States and is around 153 kilometres south of Ontario. No trip is complete without experiencing San Diego Zoo, USS Midway Museum and SeaWorld San Diego.

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