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Ontario to Istanbul flights in December 2026 from $1,038 ONT → IST, SAW

Ontario International Airport (ONT) → Istanbul New Airport (IST), Sabiha Gokcen International Airport (SAW)

For departures in December 2026, the cheapest return found recently is $1,038 with United Airlines, 9 Dec – 28 Dec, found 2 days ago.

Return

In December 2026, the cheapest return fare on each of 20 departure dates is usually $1,073 to $1,706. Across all 38 departure dates we hold on this route, it is usually $891 to $1,541. Of the 6 months with enough return fares to compare, December 2026 is usually the most expensive.

Cheapest return found recently

$1,038

9 Dec – 28 Dec · United Airlines

Ontario International Airport (ONT) → Istanbul New Airport (IST)

out 2 stops, back 1 stop

found 2 days ago

See prices for these datesCheck today's price

Cheapest we hold, of any age

$825

29 Dec – 26 Jan 2027 · United Airlines

Ontario International Airport (ONT) → Istanbul New Airport (IST)

out 2 stops, back 2 stops

found 6 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
29 Dec – 26 Jan 2027$825United Airlinesout 2 stops, back 2 stopsfound 6 days agoSee prices for these dates
30 Dec – 16 Jan 2027$870United Airlinesout 2 stops, back 2 stopsfound 3 days agoSee prices for these dates
8 Dec – 10 Jan 2027$981Frontier Airlinesout 3 stops, back 3 stopsfound 3 days agoSee prices for these dates
1 Dec – 11 Jan 2027$1,027United Airlinesout 2 stops, back 1 stopfound 5 days agoSee prices for these dates
9 Dec – 28 Dec$1,038United Airlinesout 2 stops, back 1 stopfound 2 days agoSee prices for these dates

Every date we hold

20 departure dates

1 Dec – 11 Jan 2027: $1,027, found 5 days ago5 Dec – 10 Jan 2027: $1,084, found 5 days ago8 Dec – 10 Jan 2027: $981, found 3 days ago9 Dec – 28 Dec: $1,038, found 2 days ago10 Dec – 28 Dec: $1,085, found 2 days ago12 Dec – 31 Dec: $1,551, found 5 days ago13 Dec – 20 Dec: $1,163, found 4 days ago15 Dec – 10 Jan 2027: $1,620, found 6 days ago17 Dec – 5 Jan 2027: $2,308, found 2 days ago18 Dec – 10 Jan 2027: $2,280, found 3 days ago19 Dec – 16 Jan 2027: $2,031, found 3 days ago20 Dec – 16 Jan 2027: $1,933, found 3 days ago22 Dec – 28 Dec: $1,555, found 4 days ago23 Dec – 31 Dec: $1,712, found 5 days ago24 Dec – 12 Jan 2027: $1,268, found 4 days ago25 Dec – 11 Jan 2027: $1,511, found 6 days ago27 Dec – 16 Jan 2027: $1,156, found 5 days ago28 Dec – 3 Jan 2027: $1,704, found 4 days ago29 Dec – 26 Jan 2027: $825, found 6 days ago30 Dec – 16 Jan 2027: $870, found 3 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec – 11 Jan 2027$1,027United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back 1 stopfound 5 days agoSee prices for these dates
5 Dec – 10 Jan 2027$1,084United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back 1 stopfound 5 days agoSee prices for these dates
8 Dec – 10 Jan 2027$981Frontier AirlinesOntario International Airport (ONT) → Sabiha Gokcen International Airport (SAW)out 3 stops, back 3 stopsfound 3 days agoSee prices for these dates
9 Dec – 28 Dec$1,038United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back 1 stopfound 2 days agoSee prices for these dates
10 Dec – 28 Dec$1,085United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back 1 stopfound 2 days agoSee prices for these dates
12 Dec – 31 Dec$1,551United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back nonstopfound 5 days agoSee prices for these dates
13 Dec – 20 Dec$1,163United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back 1 stopfound 4 days agoSee prices for these dates
15 Dec – 10 Jan 2027$1,620United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back 1 stopfound 6 days agoSee prices for these dates
17 Dec – 5 Jan 2027$2,308United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back 1 stopfound 2 days agoSee prices for these dates
18 Dec – 10 Jan 2027$2,280Alaska AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
19 Dec – 16 Jan 2027$2,031United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back 1 stopfound 3 days agoSee prices for these dates
20 Dec – 16 Jan 2027$1,933American AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 3 stops, back 1 stopfound 3 days agoSee prices for these dates
22 Dec – 28 Dec$1,555Alaska AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 1 stop, back nonstopfound 4 days agoSee prices for these dates
23 Dec – 31 Dec$1,712Alaska AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 1 stop, back nonstopfound 5 days agoSee prices for these dates
24 Dec – 12 Jan 2027$1,268Alaska AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 1 stop, back nonstopfound 4 days agoSee prices for these dates
25 Dec – 11 Jan 2027$1,511Alaska AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 1 stop, back nonstopfound 6 days agoSee prices for these dates
27 Dec – 16 Jan 2027$1,156United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back 1 stopfound 5 days agoSee prices for these dates
28 Dec – 3 Jan 2027$1,704United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back 2 stopsfound 4 days agoSee prices for these dates
29 Dec – 26 Jan 2027$825United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back 2 stopsfound 6 days agoSee prices for these dates
30 Dec – 16 Jan 2027$870United AirlinesOntario International Airport (ONT) → Istanbul New Airport (IST)out 2 stops, back 2 stopsfound 3 days agoSee prices for these dates

Which month looks cheapest?

April 2027 is the cheapest month — from $783.

November 2026From $9734 departure dates16 Nov – 4 Dec · found 6 days agoSee prices for these dates
December 2026From $82520 departure dates29 Dec – 26 Jan 2027 · found 6 days agoSee prices for these dates
January 2027From $9143 departure dates10 Jan 2027 – 17 Jan 2027 · found 6 days agoSee prices for these dates
February 2027From $8603 departure dates2 Feb 2027 – 30 Mar 2027 · found 8 days agoSee prices for these dates
March 2027From $7893 departure dates1 Mar 2027 – 1 Apr 2027 · found 4 days agoSee prices for these dates
April 2027From $783Cheapest seen3 departure dates20 Apr 2027 – 4 May 2027 · found 6 days agoSee prices for these dates
May 2027From $8691 departure date11 May 2027 – 26 May 2027 · found 3 days agoSee prices for these dates
July 2027From $1,2661 departure date19 Jul 2027 – 25 Jul 2027 · found 3 days agoSee prices for these dates

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