I'm trying to book an Economy Lowest Available fare on UA.bomb from SFO-MAD
I wan't to fly on UA metal as much as possible for bonus miles and E+, I also want to avoid LHR so SFO-FRA-MAD seems ideal.

When I try to book it on UA.com the flights don't show up even via multi-city search. Can anyone do the trick? Flight details as follows:


--- San Francisco, CA to Madrid, Spain
(15 hrs 7 min, 6565 miles)

United Airlines Flight UA900 on a Boeing 747 (jet) in coach class (breakfast, lunch, movie)
Departs: San Francisco, CA Sun, Sept 10, 1:58p (10 hrs 47 min)
(SFO: San Francisco Int'l)
Arrives: Frankfurt, Germany Mon, Sept 11, 9:45a
(FRA: Frankfurt Int'l)

--- Layover in Frankfurt: 1 hr 55 min ---

Lufthansa Airlines Flight LH4412 on an Airbus A320 (jet) in coach class (lunch)
Departs: Frankfurt, Germany Mon, Sept 11, 11:40a (2 hrs 25 min)
(FRA: Frankfurt Int'l)
Arrives: Madrid, Spain Mon, Sept 11, 2:05p
(MAD: Madrid Barajas)

Note: The flight from San Francisco (SFO) to Frankfurt (FRA) is overnight.

--- Madrid, Spain to San Francisco, CA
(18 hrs 42 min, 6565 miles)

Lufthansa Airlines Flight LH4417 on an Airbus A321 (jet) in coach class (breakfast)
Departs: Madrid, Spain Thur, Sept 21, 6:30a (2 hrs 35 min)
(MAD: Madrid Barajas)
Arrives: Frankfurt, Germany Thur, Sept 21, 9:05a
(FRA: Frankfurt Int'l)

--- Layover in Frankfurt: 4 hrs 40 min ---

United Airlines Flight UA901 on a Boeing 747 (jet) in coach class (lunch, snack, movie)
Departs: Frankfurt, Germany Thur, Sept 21, 1:45p (11 hrs 27 min)
(FRA: Frankfurt Int'l)
Arrives: San Francisco, CA Thur, Sept 21, 4:12p
(SFO: San Francisco Int'l)

Fare (A1): UA SFOMAD VKWANE fare (rules) $493.00
Fare (A2): UA MADSFO QKXANE fare (rules) $503.00
Tax: US September 11th Security Fee $2.50
Tax: US International Departure Tax $14.50
Tax: US Passenger Facility Charge $4.50
Tax: Spanish Security Tax €1.42
Tax: Spanish Departure Tax €4.19
Tax: UA YQ surcharge $150.00
Tax: US International Arrival Tax $14.50
Tax: German Passenger Service Charge €24.26
Tax: German Airport Security Tax €14.16
Tax: US Customs Fee $5.00
Tax: US Immigration Fee $7.00
Tax: USDA APHIS Fee $5.00
Total for 1 adult passenger: $1255.60
(as of Thursday, August 10, 2006 8:42pm)