Cheapest Flight from Miami to London 4 spring break...

Cheapest Flight from Miami to London 4 spring break...?
Can anyone please help me find a super cheap flight from Miami, FL to London, England for Spring Break (departing March 13 or 14 and returning March 21 or 22)? I have been searching like a mad woman and have found nothing!!!!!
Air Travel - 3 Answers
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1 :
You can try searching for fares on http://www.onetravel.com/ and http://www.cheapoair.com/ ticket prices are super cheap. Good Luck, Pal
2 :
Try http://www.travelbargainsites.com
3 :
I found you a flight for $783 round trip from Miami to London (March 14-22). That's probably as cheap as you're going to find it. The flight is on American Airlines and includes a layover in New York. There is currently one flight available at this price. The next cheapest is $877. You'll find the this flight available on YourTripStartsHere.com if you book in time. Enjoy your spring break!