Looks like I found it by forcing the booking code using ITA Matrix - and am seeing $270/ticket penalty. Does that seem right? A I can't tell if that is applied for each direction or in total
Fare 1: Carrier TK QHV3XPX DFW to TLV (rules)Passenger type ADT, ROUND-TRIP fare, booking code Q

Covers DFW-IST (Economy), SAW-TLV (Economy)

Fare 2: Carrier TK QHV3XPX TLV to DFW (rules)Passenger type ADT, ROUND-TRIP fare, booking code Q

Covers TLV-IST (Economy), IST-DFW (Economy)

Category 33: Voluntary cancellations

ORIGINATING THE UNITED STATES -
FARE IS FULLY REFUNDABLE WITHIN 24 HOURS AFTER
RESERVATIONS AND TICKETING DATE. REFUND REQUEST
REQUIRED BEFORE ORIGINALLY SCHEDULED FLIGHT OF FIRST
UNUSED TICKET COUPON.
NO CHARGE. IF ALL PENALTIES IN PRICING UNIT ARE PER
PRICING UNIT COLLECT HIGHEST. IF MIX OF PER FARE
COMPONENT AND PER PRICING UNIT CALCULATE EACH AS PER
PRICING UNIT AND COLLECT HIGHEST. NO CHARGE FOR INFANT
WITHOUT SEAT.
FORM OF REFUND - ORIGINAL FORM OF PAYMENT. ONLY
VALIDATING CARRIER MAY REFUND TICKET.
REPRICE FLOWN PORTION USING FARES IN EFFECT ON TICKET
ISSUANCE DATE. FOR FULLY FLOWN FARE COMPONENTS FARE
BREAK POINTS MAY NOT BE CHANGED. FOR PARTIALLY FLOWN
FARE COMPONENTS ONLY DESTINATION FARE BREAK POINTS MAY
BE CHANGED. REPRICE USING NORMAL/SPECIAL ONE WAY/ROUND
TRIP FARES/ANY RULE/FARE CLASS/RBD. PUBLIC FARES ARE
USED IF TICKETED FARE IS IN PUBLIC TARIFF. QUALIFIED
PRIVATE FARES OR PUBLIC FARES ARE USED IF TICKETED FARE
IS IN PRIVATE TARIFF. NEW FARE FOR FULLY FLOWN FARE
COMPONENTS MUST BE EQUAL TO OR HIGHER THAN TICKETED
FARE.
OR -
REFUND MUST BE REQUESTED BEFORE DEPARTURE OF
JOURNEY. REFUND REQUEST REQUIRED BEFORE ORIGINALLY
SCHEDULED FLIGHT OF FIRST UNUSED TICKET COUPON.
CHARGE USD 270.00 PER PRICING UNIT. IF ALL
PENALTIES IN PRICING UNIT ARE PER PRICING UNIT
COLLECT HIGHEST. IF MIX OF PER FARE COMPONENT AND
PER PRICING UNIT CALCULATE EACH AS PER PRICING
UNIT AND COLLECT HIGHEST. NO CHARGE FOR INFANT
WITHOUT SEAT.
FORM OF REFUND - ORIGINAL FORM OF PAYMENT. ONLY
VALIDATING CARRIER MAY REFUND TICKET.
REPRICE USING EQUAL OR HIGHER RBD.
OR -
FARE IS NONREFUNDABLE BEFORE DEPARTURE OF JOURNEY.
FARE IS NONREFUNDABLE ANYTIME AFTER ORIGINALLY
SCHEDULED FLIGHT OF FIRST UNUSED TICKET COUPON.
IF MIX OF PER FARE COMPONENT AND PER PRICING UNIT
CALCULATE EACH AS PER PRICING UNIT AND COLLECT
HIGHEST.
REPRICE USING EQUAL OR HIGHER RBD.
OR -
REFUND MUST BE REQUESTED AFTER DEPARTURE OF
JOURNEY. REFUND REQUEST REQUIRED BEFORE ORIGINALLY
SCHEDULED FLIGHT OF FIRST UNUSED TICKET COUPON.
NO CHARGE. IF ALL PENALTIES IN PRICING UNIT ARE PER
PRICING UNIT COLLECT HIGHEST. IF MIX OF PER FARE
COMPONENT AND PER PRICING UNIT CALCULATE EACH AS
PER PRICING UNIT AND COLLECT HIGHEST.
FORM OF REFUND - ORIGINAL FORM OF PAYMENT. ONLY
VALIDATING CARRIER MAY REFUND TICKET.
REPRICE FLOWN PORTION USING FARES IN EFFECT ON
TICKET ISSUANCE DATE. FOR FULLY FLOWN FARE
COMPONENTS FARE BREAK POINTS MAY NOT BE CHANGED.
FOR PARTIALLY FLOWN FARE COMPONENTS ONLY
DESTINATION FARE BREAK POINTS MAY BE CHANGED.
REPRICE USING NORMAL/SPECIAL ONE WAY/ROUND TRIP
FARES/ANY RULE/FARE CLASS/EQUAL OR HIGHER RBD.
PUBLIC FARES ARE USED IF TICKETED FARE IS IN
PUBLIC TARIFF. QUALIFIED PRIVATE FARES OR PUBLIC
FARES ARE USED IF TICKETED FARE IS IN PRIVATE
TARIFF. NEW FARE FOR FULLY FLOWN FARE COMPONENTS
MUST BE EQUAL TO OR HIGHER THAN TICKETED FARE.
OR -
FARE IS NONREFUNDABLE AFTER DEPARTURE OF JOURNEY.
FARE IS NONREFUNDABLE ANYTIME AFTER ORIGINALLY
SCHEDULED FLIGHT OF FIRST UNUSED TICKET COUPON.
IF MIX OF PER FARE COMPONENT AND PER PRICING UNIT
CALCULATE EACH AS PER PRICING UNIT AND COLLECT
HIGHEST.
REPRICE USING EQUAL OR HIGHER RBD.