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Washington to Istanbul flights in December 2026 from $647 DCA, IAD → IST, SAW

Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) → Istanbul New Airport (IST), Sabiha Gokcen International Airport (SAW)

For departures in December 2026, the cheapest return found recently is $1,554 with Aer Lingus, 20 Dec – 5 Jan 2027, found yesterday. The cheapest one-way found recently is $647 with United Airlines, 25 Dec, found 6 days ago.

Return

In December 2026, the cheapest return fare on each of 11 departure dates is usually $849 to $1,069. Across all 28 departure dates we hold on this route, it is usually $816 to $979. Of the 4 months with enough return fares to compare, 2 are usually cheaper than December 2026.

Cheapest return found recently

$1,554

20 Dec – 5 Jan 2027 · Aer Lingus

Washington Dulles International Airport (IAD) → Sabiha Gokcen International Airport (SAW)

out 2 stops, back nonstop

found yesterday

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Cheapest we hold, of any age

$724

1 Dec – 7 Dec · Icelandair

Washington Dulles International Airport (IAD) → Sabiha Gokcen International Airport (SAW)

out 2 stops, back 2 stops

found 2 days ago

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
1 Dec – 7 Dec$724Icelandairout 2 stops, back 2 stopsfound 2 days agoSee prices for these dates
7 Dec – 17 Dec$840Lufthansaout 1 stop, back 1 stopfound 7 days agoSee prices for these dates
28 Dec – 12 Jan 2027$847British Airwaysout 1 stop, back 1 stopfound 8 days agoSee prices for these dates
6 Dec – 27 Dec$851Turkish Airlinesout nonstop, back nonstopfound 2 days agoSee prices for these dates
5 Dec – 18 Dec$889Saudiaout 1 stop, back 1 stopfound 2 days agoSee prices for these dates

Every date we hold

11 departure dates

1 Dec – 7 Dec: $724, found 2 days ago5 Dec – 18 Dec: $889, found 2 days ago6 Dec – 27 Dec: $851, found 2 days ago7 Dec – 17 Dec: $840, found 7 days ago11 Dec – 25 Dec: $901, found 7 days ago15 Dec – 27 Dec: $1,132, found 2 days ago19 Dec – 27 Dec: $1,585, found 2 days ago20 Dec – 5 Jan 2027: $1,554, found yesterday25 Dec – 15 Jan 2027: $1,006, found 6 days ago28 Dec – 12 Jan 2027: $847, found 8 days ago29 Dec – 9 Jan 2027: $961, found 2 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec – 7 Dec$724IcelandairWashington Dulles International Airport (IAD) → Sabiha Gokcen International Airport (SAW)out 2 stops, back 2 stopsfound 2 days agoSee prices for these dates
5 Dec – 18 Dec$889SaudiaWashington Dulles International Airport (IAD) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 2 days agoSee prices for these dates
6 Dec – 27 Dec$851Turkish AirlinesWashington Dulles International Airport (IAD) → Istanbul New Airport (IST)out nonstop, back nonstopfound 2 days agoSee prices for these dates
7 Dec – 17 Dec$840LufthansaWashington Dulles International Airport (IAD) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
11 Dec – 25 Dec$901Virgin AtlanticWashington Dulles International Airport (IAD) → Sabiha Gokcen International Airport (SAW)out 2 stops, back 1 stopfound 7 days agoSee prices for these dates
15 Dec – 27 Dec$1,132Aer LingusWashington Dulles International Airport (IAD) → Sabiha Gokcen International Airport (SAW)out 2 stops, back 2 stopsfound 2 days agoSee prices for these dates
19 Dec – 27 Dec$1,585Aer LingusWashington Dulles International Airport (IAD) → Sabiha Gokcen International Airport (SAW)out 2 stops, back 2 stopsfound 2 days agoSee prices for these dates
20 Dec – 5 Jan 2027$1,554Aer LingusWashington Dulles International Airport (IAD) → Sabiha Gokcen International Airport (SAW)out 2 stops, back nonstopfound yesterdaySee prices for these dates
25 Dec – 15 Jan 2027$1,006LufthansaWashington Dulles International Airport (IAD) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 6 days agoSee prices for these dates
28 Dec – 12 Jan 2027$847British AirwaysWashington Dulles International Airport (IAD) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 8 days agoSee prices for these dates
29 Dec – 9 Jan 2027$961British AirwaysWashington Dulles International Airport (IAD) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 2 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $724.

November 2026From $8865 departure dates15 Nov – 21 Nov · found 6 days agoSee prices for these dates
December 2026From $724Cheapest seen11 departure dates1 Dec – 7 Dec · found 2 days agoSee prices for these dates
January 2027From $7912 departure dates14 Jan 2027 – 21 Jan 2027 · found 3 days agoSee prices for these dates
February 2027From $7473 departure dates3 Feb 2027 – 10 Feb 2027 · found 2 days agoSee prices for these dates
March 2027From $7464 departure dates17 Mar 2027 – 31 Mar 2027 · found 6 days agoSee prices for these dates
May 2027From $9601 departure date23 May 2027 – 1 Jul 2027 · found 2 days agoSee prices for these dates
June 2027From $1,0571 departure date5 Jun 2027 – 26 Jun 2027 · found 2 days agoSee prices for these dates
August 2027From $7991 departure date6 Aug 2027 – 20 Aug 2027 · found 6 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

$647

25 Dec · United Airlines

Ronald Reagan National Airport (DCA) → Istanbul New Airport (IST)

2 stops

found 6 days ago

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

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
25 Dec$647United Airlines2 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
25 Dec$647United AirlinesRonald Reagan National Airport (DCA) → Istanbul New Airport (IST)2 stopsfound 6 days agoOpen this trip

Which month looks cheapest?

February 2027 is the cheapest month — from $342.

November 2026From $3911 departure date26 Nov · found 6 days agoOpen this trip
December 2026From $6471 departure date25 Dec · found 6 days agoOpen this trip
January 2027From $3833 departure dates8 Jan 2027 · found 3 days agoOpen this trip
February 2027From $342Cheapest seen5 departure dates8 Feb 2027 · found 3 days agoOpen this trip
March 2027From $3491 departure date17 Mar 2027 · found 6 days agoOpen this trip
July 2027From $4602 departure dates24 Jul 2027 · found 5 days agoOpen this trip

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