Hi all!
I found a great fare on ITA Matrix and have been unable to replicate the same fare on Turkish airlines website or when calling them directly. Any advice would be appreciated!

DETAILS
Washington / Istanbul

ITINERARY
Washington (IAD) to Istanbul (IST) - Sun, Jul 23

Turkish Airlines 8 Dep: 10:45PM Arr: 3:45PM 10h 0m Boeing 787 Coach (V)

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Istanbul (IST) to Washington (IAD) - Tue, Aug 8

Turkish Airlines 187 Dep: 8:15AM Arr: 12:10PM 10h 55m Boeing 787 Coach (L)


FARE AND BOOKING DETAILS

Provide this information to a travel agent to help them match the fares found.
Make sure to provide the exact booking and fare codes shown.

Fare 1: Carrier TK VKY4PC WAS to IST $405.50
Passenger type ADT, round trip fare, booking code V
Covers IAD-IST (Economy)

Fare 2: Carrier TK LKY4PC IST to WAS $434.50
Passenger type ADT, round trip fare, booking code L
Covers IST-IAD (Economy)

United States Passenger Civil Aviation Security Service Fee (AY) $5.60
TK YR surcharge (YR) $340.00
US International Departure Tax (US) $42.20
US Passenger Facility Charge (XF) $4.50
United States APHIS Passenger Fee Passengers (XA) $3.83
United States Customs User Fee (YC) $6.52
United States Immigration User Fee (XY) $7.00
Turkey Airport Service Charge International (TR) $21.40
Turkey Flights Security Charge International (M6) $3.20

Subtotal per passenger $1,274.25
Number of passengers x1

Total airfare & taxes $1,274.25

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Fare construction (can be useful to travel agents)

WAS TK IST 405.50VKY4PC TK WAS 434.50LKY4PC NUC 840.00 END ROE 1.00 XT 6.52YC 7.00XY 3.83XA 42.20US 5.60AY 3.20M6 21.40TR 340.00YR 4.50XF IAD4.50

This ticket is non-refundable.
Changes to this ticket will incur a penalty fee.