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Ontario skyline — flights from Atlanta from €110, cheapest in October

Atlanta to Ontario: buy now or wait?

Typical one-way fare Atlanta→Ontario: €133 (median of 29 daily lowest fares we tracked); under €113 is a good price; cheapest month: October; book 42–55 days ahead.

Buy now FareScore 79/100
usually $148 $122 ≈ €110 Today's best fare

Cheaper than 79% of what we have seen

23 Dec Frontier Airlines With a stop
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All fares Atlanta → Ontario

Cheapest first. Every price is live and goes straight to booking.

What the history says

Prices recorded 95
Typical price €133
Lowest we saw €110
You save today €23

Based on 95 prices we recorded on this exact route, compared against the same departure month.

Best booking window

42–55 days — is when this route has been cheapest to book: €110 typical, on 17 observations. That is about €86 less than booking in the last two weeks.

Cheapest months to fly to Ontario

October €110 29 observations
December €133 34 observations
November €151 29 observations

Booking tips from our fare data

How far in advance should you book a flight?
Book 1.5–2 months before departure. Tracking the same flights at every lead time (110,945 flights on 21,717 routes, 2026-06-14 to 2026-11-10), that window had the smallest average premium over each flight's lowest fare: +16.3%, against +48.8% in the last 3 days.
How much does a flight in Europe cost?
€114 one way at the median, across 28,636 routes within Europe (fares observed 2026-06-14 to 2026-11-10). The cheapest countries to fly to were Albania (€58), Malta (€64), Italy (€76); the dearest Belarus (€299) and Russia (€291).
Are flights getting more expensive?
Not right now. The Piratefly monthly Fare Index stands at 98.5 in 2026-11 (month in progress), against 100 in 2026-08: comparable flights are 1.5% cheaper than then, measured on the same routes month to month.

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