Cheap flights from Ontario to Warsaw from $1,173 ONT → WAW
Ontario International Airport (ONT) → Frederic Chopin Airport (WAW)
The cheapest return found recently is $1,173 with Frontier Airlines, 23 Dec – 18 Jan 2027, found today.
- Cheapest return found recently
- $1,173, 23 Dec to 18 Jan 2027
- Usual return price
- $1,177 to $1,296
Return
The cheapest return fare on each of 3 departure dates is usually $1,177 to $1,296.
Cheapest return found recently
$1,173
23 Dec – 18 Jan 2027 · Frontier Airlines
Ontario International Airport (ONT) → Frederic Chopin Airport (WAW)
Leaves 8:02 a.m. · Return leaves 12:30 p.m. · 49 h 8 min of travel, both ways together
out 2 stops, back 2 stops
found today
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$1,173 23 Dec – 18 Jan 2027found todaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 46 days, 24 Sept to 10 Nov, the cheapest return we saw each day was $711 to $1,496.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 3 departure dates from 14 Dec to 23 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 26-night return fares leaving within 3 days of 23 Dec to compare.
Every date we hold
4 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 14 Dec – 8 Jan 2027 | $1,180 | Envoy Air | Ontario International Airport (ONT) → Frederic Chopin Airport (WAW) | out 2 stops, back 2 stops | found today | See prices for these dates |
| 15 Dec – 9 Jan 2027 | $1,412 | Frontier Airlines | Ontario International Airport (ONT) → Frederic Chopin Airport (WAW) | out 2 stops, back 2 stops | found today | See prices for these dates |
| 23 Dec – 18 Jan 2027 | $1,173 | Frontier Airlines | Ontario International Airport (ONT) → Frederic Chopin Airport (WAW) | out 2 stops, back 2 stops | found today | See prices for these dates |
Airlines on the cheapest dates: Frontier Airlines, Envoy Air.
Premium cabin fares from Ontario to Warsaw
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 23 Dec – 18 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Ontario to Warsaw?
Return
Fares 90 to 179 days before departure were typically 17% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 10 Nov (46 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $881 | $784 | +20% | 8 |
| 7–13 days | $808 | $723 | +10% | 19 |
| 14–29 days | $915 | $720 | +25% | 27 |
| 30–59 days | $854 | $735 | +16% | 22 |
| 60–89 days | $748 | $736 | +2% | 29 |
| 90–179 days | $734 | $724 | Cheapest seen | 32 |
| 180+ days | $805 | $711 | +10% | 14 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Los Angeles → Warsaw
56 km from Ontario
$699
$474 less than flying from Ontario
24 Dec – 19 Jan 2027 · LAX → WAW · out 2 stops, back 2 stops
found 18 hours ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Long Beach → Warsaw
60 km from Ontario
$843
1 Jul 2027 · LGB → WAW · 2 stops
found 6 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 23 Dec – 18 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Ontario to Warsaw?
The cheapest return found recently is $1,173 with Frontier Airlines, 23 Dec to 18 Jan 2027, found today. The cheapest return fare on each of 3 departure dates is usually $1,177 to $1,296.
How far ahead should I book a flight from Ontario to Warsaw?
In 46 days of prices between 24 Sept and 10 Nov, return fares 90 to 179 days before departure were typically 17% lower than 0 to 6 days before departure.
Which airlines have the cheapest flights from Ontario to Warsaw?
Between 14 Dec and 23 Dec, Frontier Airlines has the cheapest return on 2 of the 3 departure dates we hold, and Envoy Air on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work