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Chicago to Istanbul flights in December 2026 from $539 MDW, ORD, RFD → IST, SAW

Chicago Midway International Airport (MDW), O'Hare International Airport (ORD), Chicago Rockford International Airport (RFD) → Istanbul New Airport (IST), Sabiha Gokcen International Airport (SAW)

For departures in December 2026, the cheapest return found recently is $968 with British Airways, 13 Dec – 10 Jan 2027, found 3 days ago. The cheapest one-way found recently is $539 with Icelandair, 3 Dec, found 6 days ago.

Return

In December 2026, the cheapest return fare on each of 13 departure dates is usually $902 to $1,125. Across all 34 departure dates we hold on this route, it is usually $814 to $1,026. Of the 4 months with enough return fares to compare, December 2026 is usually the most expensive.

Cheapest return found recently

$968

13 Dec – 10 Jan 2027 · British Airways

O'Hare International Airport (ORD) → Istanbul New Airport (IST)

out 1 stop, back 1 stop

found 3 days ago

See prices for these datesCheck today's price

Cheapest we hold, of any age

$751

8 Dec – 26 Jan 2027 · Icelandair

O'Hare International Airport (ORD) → Sabiha Gokcen International Airport (SAW)

out 2 stops, back 2 stops

found 7 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
8 Dec – 26 Jan 2027$751Icelandairout 2 stops, back 2 stopsfound 7 days agoSee prices for these dates
9 Dec – 26 Jan 2027$769Icelandairout 2 stops, back 2 stopsfound 4 days agoSee prices for these dates
26 Dec – 11 Jan 2027$862LOT Polishout 1 stop, back 1 stopfound 5 days agoSee prices for these dates
28 Dec – 14 Jan 2027$902KLMout 1 stop, back 1 stopfound 6 days agoSee prices for these dates
2 Dec – 8 Dec$914Turkish Airlinesout nonstop, back nonstopfound 6 days agoSee prices for these dates

Every date we hold

13 departure dates

2 Dec – 8 Dec: $914, found 6 days ago3 Dec – 11 Dec: $1,027, found 3 days ago8 Dec – 26 Jan 2027: $751, found 7 days ago9 Dec – 26 Jan 2027: $769, found 4 days ago13 Dec – 10 Jan 2027: $968, found 3 days ago14 Dec – 21 Dec: $1,024, found 4 days ago17 Dec – 6 Jan 2027: $1,392, found 6 days ago22 Dec – 25 Jan 2027: $1,349, found 5 days ago23 Dec – 2 Jan 2027: $1,598, found 6 days ago25 Dec – 8 Jan 2027: $1,122, found 5 days ago26 Dec – 11 Jan 2027: $862, found 5 days ago27 Dec – 5 Jan 2027: $1,125, found 7 days ago28 Dec – 14 Jan 2027: $902, found 6 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
2 Dec – 8 Dec$914Turkish AirlinesO'Hare International Airport (ORD) → Istanbul New Airport (IST)out nonstop, back nonstopfound 6 days agoSee prices for these dates
3 Dec – 11 Dec$1,027KLMO'Hare International Airport (ORD) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
8 Dec – 26 Jan 2027$751IcelandairO'Hare International Airport (ORD) → Sabiha Gokcen International Airport (SAW)out 2 stops, back 2 stopsfound 7 days agoSee prices for these dates
9 Dec – 26 Jan 2027$769IcelandairO'Hare International Airport (ORD) → Sabiha Gokcen International Airport (SAW)out 2 stops, back 2 stopsfound 4 days agoSee prices for these dates
13 Dec – 10 Jan 2027$968British AirwaysO'Hare International Airport (ORD) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
14 Dec – 21 Dec$1,024KLMO'Hare International Airport (ORD) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
17 Dec – 6 Jan 2027$1,392Frontier AirlinesO'Hare International Airport (ORD) → Sabiha Gokcen International Airport (SAW)out 3 stops, back 3 stopsfound 6 days agoSee prices for these dates
22 Dec – 25 Jan 2027$1,349IcelandairO'Hare International Airport (ORD) → Istanbul New Airport (IST)out 2 stops, back 3 stopsfound 5 days agoSee prices for these dates
23 Dec – 2 Jan 2027$1,598United AirlinesO'Hare International Airport (ORD) → Istanbul New Airport (IST)out 1 stop, back 4 stopsfound 6 days agoSee prices for these dates
25 Dec – 8 Jan 2027$1,122SAS ScandinavianO'Hare International Airport (ORD) → Sabiha Gokcen International Airport (SAW)out 2 stops, back 2 stopsfound 5 days agoSee prices for these dates
26 Dec – 11 Jan 2027$862LOT PolishO'Hare International Airport (ORD) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
27 Dec – 5 Jan 2027$1,125United AirlinesO'Hare International Airport (ORD) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
28 Dec – 14 Jan 2027$902KLMO'Hare International Airport (ORD) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $679.

November 2026From $679Cheapest seen5 departure dates16 Nov – 25 Nov · found 6 days agoSee prices for these dates
December 2026From $75113 departure dates8 Dec – 26 Jan 2027 · found 7 days agoSee prices for these dates
January 2027From $7139 departure dates12 Jan 2027 – 19 Jan 2027 · found 6 days agoSee prices for these datesEvery date in January 2027
February 2027From $8671 departure date1 Feb 2027 – 7 Feb 2027 · found 3 days agoSee prices for these dates
March 2027From $8023 departure dates9 Mar 2027 – 23 Mar 2027 · found 3 days agoSee prices for these dates
May 2027From $8232 departure dates10 May 2027 – 28 May 2027 · found 4 days agoSee prices for these dates
June 2027From $9891 departure date1 Jun 2027 – 30 Jun 2027 · found 4 days agoSee prices for these dates

One-way

We hold one-way fares on only 1 departure date in December 2026, too few to say what one usually costs.

Cheapest one-way found recently

$539

3 Dec · Icelandair

O'Hare International Airport (ORD) → Sabiha Gokcen International Airport (SAW)

3 stops

found 6 days ago

Open this tripCheck today's price

It is also the cheapest one-way we hold, of any age.

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
3 Dec$539Icelandair3 stopsfound 6 days agoOpen this trip

Every date we hold

1 departure date

See every date as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
3 Dec$539IcelandairO'Hare International Airport (ORD) → Sabiha Gokcen International Airport (SAW)3 stopsfound 6 days agoOpen this trip

Which month looks cheapest?

January 2027 is the cheapest month — from $343.

December 2026From $5391 departure date3 Dec · found 6 days agoOpen this trip
January 2027From $343Cheapest seen4 departure dates17 Jan 2027 · found 3 days agoOpen this tripEvery date in January 2027
February 2027From $3616 departure dates8 Feb 2027 · found 6 days agoOpen this trip
April 2027From $3721 departure date26 Apr 2027 · found 2 days agoOpen this trip
May 2027From $3564 departure dates10 May 2027 · found 6 days agoOpen this trip
June 2027From $5492 departure dates8 Jun 2027 · found 8 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