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Cheap Flights from Ontario (ONT) to Prague (PRG)

Compare Ontario International to Prague flight deals

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

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Flight deals from Ontario International to Prague

Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Prague Airport? If you want to travel next month, return fares start from $1,033. Find the lowest prices on one-way and return tickets right here.
Prague.$1,033 per passenger.Departing Mon, 17 Aug, returning Mon, 24 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Mon, 17 Aug, arriving in Prague.Inbound indirect flight with Delta, departs from Prague on Mon, 24 Aug, arriving in Ontario International.Price includes taxes and charges.From $1,033, select.
Prague.$1,046 per passenger.Departing Wed, 21 Oct, returning Wed, 4 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Wed, 21 Oct, arriving in Prague.Inbound indirect flight with Delta, departs from Prague on Wed, 4 Nov, arriving in Ontario International.Price includes taxes and charges.From $1,046, select.
Prague.$1,084 per passenger.Departing Sun, 13 Sep, returning Tue, 29 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Sun, 13 Sep, arriving in Prague.Inbound indirect flight with Delta, departs from Prague on Tue, 29 Sep, arriving in Ontario International.Price includes taxes and charges.From $1,084, select.
Prague.$1,084 per passenger.Departing Wed, 26 Aug, returning Tue, 1 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Wed, 26 Aug, arriving in Prague.Inbound indirect flight with Delta, departs from Prague on Tue, 1 Sep, arriving in Ontario International.Price includes taxes and charges.From $1,084, select.
Prague.$1,104 per passenger.Departing Sun, 25 Apr, returning Sun, 2 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Sun, 25 Apr, arriving in Prague.Inbound indirect flight with Delta, departs from Prague on Sun, 2 May, arriving in Ontario International.Price includes taxes and charges.From $1,104, select.
Prague.$1,202 per passenger.Departing Thu, 26 Nov, returning Thu, 7 Jan.Return flight with KLM.Outbound indirect flight with KLM, departs from Ontario International on Thu, 26 Nov, arriving in Prague.Inbound indirect flight with KLM, departs from Prague on Thu, 7 Jan, arriving in Ontario International.Price includes taxes and charges.From $1,202, select.
Prague.$1,409 per passenger.Departing Tue, 13 Apr, returning Tue, 27 Apr.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Tue, 13 Apr, arriving in Prague.Inbound indirect flight with British Airways, departs from Prague on Tue, 27 Apr, arriving in Ontario International.Price includes taxes and charges.From $1,409, select.
Prague.$1,458 per passenger.Departing Tue, 11 May, returning Tue, 25 May.Return flight with British Airways and Finnair.Outbound indirect flight with British Airways, departs from Ontario International on Tue, 11 May, arriving in Prague.Inbound indirect flight with Finnair, departs from Prague on Tue, 25 May, arriving in Ontario International.Price includes taxes and charges.From $1,458, select.
Prague.$1,467 per passenger.Departing Mon, 23 Nov, returning Wed, 23 Dec.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Mon, 23 Nov, arriving in Prague.Inbound indirect flight with British Airways, departs from Prague on Wed, 23 Dec, arriving in Ontario International.Price includes taxes and charges.From $1,467, select.
Prague.$1,644 per passenger.Departing Thu, 24 Dec, returning Tue, 5 Jan.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Thu, 24 Dec, arriving in Prague.Inbound indirect flight with British Airways, departs from Prague on Tue, 5 Jan, arriving in Ontario International.Price includes taxes and charges.From $1,644, select.
Prague.$1,814 per passenger.Departing Fri, 13 Nov, returning Fri, 27 Nov.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Fri, 13 Nov, arriving in Prague.Inbound indirect flight with British Airways, departs from Prague on Fri, 27 Nov, arriving in Ontario International.Price includes taxes and charges.From $1,814, select.
Prague.$2,754 per passenger.Departing Fri, 1 Jan, returning Tue, 5 Jan.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Fri, 1 Jan, arriving in Prague.Inbound indirect flight with British Airways, departs from Prague on Tue, 5 Jan, arriving in Ontario International.Price includes taxes and charges.From $2,754, select.
Prague.$3,264 per passenger.Departing Wed, 29 Jul, returning Wed, 5 Aug.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Ontario International on Wed, 29 Jul, arriving in Prague.Inbound indirect flight with Turkish Airlines, departs from Prague on Wed, 5 Aug, arriving in Ontario International.Price includes taxes and charges.From $3,264, select.
Prague.$4,057 per passenger.Departing Fri, 18 Dec, returning Tue, 22 Dec.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Fri, 18 Dec, arriving in Prague.Inbound indirect flight with British Airways, departs from Prague on Tue, 22 Dec, arriving in Ontario International.Price includes taxes and charges.From $4,057, select.
Prague.$9,636 per passenger.Departing Wed, 5 Aug, returning Mon, 5 Oct.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Ontario International on Wed, 5 Aug, arriving in Prague.Inbound indirect flight with Turkish Airlines, departs from Prague on Mon, 5 Oct, arriving in Ontario International.Price includes taxes and charges.From $9,636, select.
Prague.$10,305 per passenger.Departing Thu, 17 Jun, returning Fri, 2 Jul.Return flight with Alaska Airlines and China Airlines.Outbound indirect flight with Alaska Airlines, departs from Ontario International on Thu, 17 Jun, arriving in Prague.Inbound indirect flight with China Airlines, departs from Prague on Fri, 2 Jul, arriving in Ontario International.Price includes taxes and charges.From $10,305, select.

Find the cheapest month to fly from Ontario International to Prague

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Prague flights are currently cheapest in August.
Jul
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Aug
from $1,033
Sep
from $1,084
Oct
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Nov
from $1,814
Dec
from $4,057
Jan
from $2,754
Feb
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Mar
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Apr
from $1,409
May
from $1,458
Jun
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Ontario International to Prague: Alternative routes

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

Prague

11km from central Prague
ClosestCheapest
from $1,033
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Ontario to Prague: Flight information

The things to know before you go.
Cheapest flight found$1,033
Cheapest month to flyAugust

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

The best price we found for a return flight from Ontario International to Prague is $1,033. 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 Prague. But we found flights with one or more stops from $1,033.
As of July 2026, there are no flights flying from Ontario International to Prague.
The cheapest month to fly from Ontario International to Prague is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Prague Airport on Monday, 17 August 2026.
No airlines currently offer direct flights between Ontario International Airport and Prague 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 Prague 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 Prague is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Delta offers the cheapest flight tickets to Prague.

Travelling from Ontario International Airport (ONT) to Prague Airport (PRG): what you need to know

  • Prague is nine hours ahead of Ontario and is in the UTC+1 timezone.

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

  • You can expect longer queues during popular months such as July. Arriving up to four hours in advance for international flights and two hours for domestic departures will help ensure a smooth travel experience.

How to find the cheapest flights from Ontario International Airport (ONT) to Prague Airport (PRG)

  • The lowest price we've seen for a one-way Ontario International Airport to Prague Airport flight is $534. A return ticket is currently $1,033. Depending on the availability when you book, these fares could change.

  • Don't wait until the last moment. You're more likely to get cheap tickets from ONT to PRG if you book early. Airlines often offer some amazing early bird rates.

  • The 'Whole month' search function shows you the cheapest flights from Ontario International Airport to Prague Airport across the month. It's an easy way to snap up a bargain if your travel plans aren't set in stone.

  • Spend less time searching for cheap flights from ONT to PRG by setting up a Price Alert. You'll get an email or notification on the app when a new low fare is offered.

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

Handy information about Ontario International Airport (ONT)

  • You'll find ONT at 2900 E. Airport Drive.

  • Ontario International Airport scores high marks for on-time performance. 83% of flights that take off from ONT reach their destination on time.

  • To get to Ontario International Airport from central Ontario, it takes about 15 minutes if you're planning to drive. This depends on traffic, however. It's approximately 10 kilometres from the airport to the city centre.

  • Planning to catch public transport? Expect a trip time of around 45 minutes.

  • Get your travels off to a leisurely start by staying near ONT. Whether you're catching an early flight from Ontario International Airport to Prague Airport or want to avoid feeling rushed, these stays are the answer:

Arriving at Prague Airport (PRG)

Getting from Prague Airport (PRG) to central Prague

  • Prague Airport to central Prague has a drive time of about 25 minutes. It's approximately 18 kilometres away.

  • If you're using public transport, expect a journey of about 35 minutes.

When to fly to Prague Airport (PRG)

  • It's time to choose your trip dates for your flight from Ontario International Airport to Prague Airport. September is the busiest month to visit Prague. If you want a more laid-back vibe, go in March.

  • When booking your flight from Ontario International Airport to Prague Airport, consider the kind of weather you like. August is the warmest month in Prague, with the temperature ranging from 12ºC (54ºF) to 27ºC (81ºF).

  • Search for cheap tickets from ONT to PRG in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -8ºC (18ºF) and 5ºC (41ºF) on average.

Explore more of Czechia

  • Brno is just one of the many places in Czechia waiting to be explored once you've seen Prague. Around 177 kilometres away to the south-east, top sights here include Tugendhat Villa, Botanicka Zahrada (Hortus Botanicus) and Špilberk Castle.

  • Ostrava is another sought-after destination in Czechia and is around 274 kilometres east of Prague. No journey is complete without visiting Landek, Landek Park and Dolní Vítkovice.

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Prices shown on this page are estimated lowest prices only. Found in the last 12 days.