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Cheap flight tickets from Memphis International to Ontario International

Compare Memphis International 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 Memphis International to Ontario International

Looking for a cheap last-minute deal or the best return flight from Memphis International to Ontario International? Find the lowest prices on one-way and return tickets right here.
Ontario.RM788 per passenger.Departing Thu, 16 Oct, returning Sun, 19 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Memphis International on Thu, 16 Oct, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Sun, 19 Oct, arriving in Memphis International.Price includes taxes and charges.From RM788, select.
Ontario.RM1,489 per passenger.Departing Wed, 25 Feb, returning Mon, 2 Mar.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Memphis International on Wed, 25 Feb, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 2 Mar, arriving in Memphis International.Price includes taxes and charges.From RM1,489, select.
Ontario.RM1,490 per passenger.Departing Thu, 30 Oct, returning Tue, 4 Nov.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Memphis International on Thu, 30 Oct, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 4 Nov, arriving in Memphis International.Price includes taxes and charges.From RM1,490, select.
Ontario.RM1,492 per passenger.Departing Wed, 7 Jan, returning Mon, 12 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Memphis International on Wed, 7 Jan, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 12 Jan, arriving in Memphis International.Price includes taxes and charges.From RM1,492, select.
Ontario.RM1,516 per passenger.Departing Thu, 27 Nov, returning Thu, 4 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Memphis International on Thu, 27 Nov, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 4 Dec, arriving in Memphis International.Price includes taxes and charges.From RM1,516, select.
Ontario.RM1,516 per passenger.Departing Thu, 6 Nov, returning Tue, 11 Nov.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Memphis International on Thu, 6 Nov, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 11 Nov, arriving in Memphis International.Price includes taxes and charges.From RM1,516, select.
Ontario.RM1,539 per passenger.Departing Tue, 30 Dec, returning Mon, 5 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Memphis International on Tue, 30 Dec, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 5 Jan, arriving in Memphis International.Price includes taxes and charges.From RM1,539, select.
Ontario.RM1,660 per passenger.Departing Mon, 1 Dec, returning Mon, 8 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Memphis International on Mon, 1 Dec, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 8 Dec, arriving in Memphis International.Price includes taxes and charges.From RM1,660, select.

Find the cheapest month to fly from Memphis International to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Memphis International to Ontario International flights are currently cheapest in October.
Sep
from RM3,077
Oct
from RM788
Nov
from RM1,516
Dec
from RM1,660
Jan
from RM1,492
Feb
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Mar
from RM1,837
Apr
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May
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Jun
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Jul
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Aug
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Memphis International to Ontario International: Alternative routes

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

Memphis to Ontario: Flight information

The things to know before you go.
Cheapest flight foundRM788
Cheapest month to flyOctober

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

The best price we found for a return flight from Memphis International to Ontario International is RM788. 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 Memphis International to Ontario International. But we found flights with one or more stops from RM788.
As of September 2025, there are no flights flying from Memphis International to Ontario International.
The cheapest month to fly from Memphis International to Ontario International is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Memphis International Airport to Ontario International Airport on Thursday, 16 October 2025.
No airlines currently offer direct flights between Memphis International 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, Frontier Airlines offers the cheapest flight tickets to Ontario International.

Travelling from Memphis International Airport (MEM) to Ontario International Airport (ONT): what you need to know

  • The timezone in Ontario is UTC-7, which is two hours behind Memphis.

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

  • Travelling during a peak month like July? School holidays and other popular periods can result in longer queues at check-in and security. Play things extra safe and arrive up to four hours ahead of international flights and two hours before domestic departures.

  • If you'd like to include a stop along the way, just deselect 'Direct flights only' when searching for your ticket from Memphis International Airport to Ontario International Airport. These are the top stopovers between MEM and ONT:

    • Harry Reid Airport (formerly McCarran Airport)

    • Denver International Airport

    • Dallas/Fort Worth International Airport

How to find the cheapest flights from Memphis International Airport (MEM) to Ontario International Airport (ONT)

  • The lowest price we've seen for a one-way Memphis International Airport to Ontario International Airport flight is RM582. A return plane ticket right now is RM788. Depending on the availability when you book, these fares could change.

  • To find cheap tickets from MEM to ONT, book in advance. Airlines tend to offer lower fares when flights are first released.

  • The 'Whole month' search tool shows you the cheapest flights from Memphis International Airport to Ontario International Airport across each month. It's a good way to find a bargain if your travel dates are flexible.

  • Landing cheap flights from MEM to ONT is a cinch with Price Alerts. Simply create one of these automatic alerts and we'll get in touch when fares go down.

  • Discover the ideal flight for you by using the filters. To see the 'Cheapest,' 'Best' or 'Fastest' flights from Memphis International Airport to Ontario International Airport, use the 'Sort by' tool. You can also filter by departure and arrival times, airline, and number of stops.

Handy information about Memphis International Airport (MEM)

  • You'll find MEM at 2491 Winchester Road, Suite 113.

  • When it comes to Memphis International Airport's on-time performance, data shows 79.88% of flights complete their journey on time.

  • Memphis International Airport is around 19 kilometres from central Memphis. If you're catching a cab, ride-sharing or driving from the centre, it'll take 15 minutes or so to get there, depending on the traffic.

  • You can expect a trip time of around 1 hour 30 minutes on public transport.

  • Searching for a convenient hotel close to MEM? If you've booked an early flight from Memphis International Airport to Ontario International Airport, these accommodation options will have you moments from check-in:

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • The street address for ONT is 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 roughly 1 hour 30 minutes.

When to fly to Ontario International Airport (ONT)

  • August is the busiest month for flights from Memphis International Airport to Ontario International Airport. For smaller crowds, go to Ontario in May.

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

  • Search for cheap tickets from MEM to ONT in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 4ºC (39ºF) and 23ºC (73ºF) on average.

Explore more of United States

  • Ontario is always a good idea, but there are so many other parts of United States waiting to be discovered. Around 56 kilometres west of Ontario, a visit to Los Angeles will keep you on the move. Start with popular sights like Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

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

Plan the rest of your trip from Memphis to Ontario

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