Lynn made one change to the team that saw off the challenge of Rushall the previous week with Jordan Richards coming in for Matty Castellan who took a place on the bench.
The first half was a close affair but despite a lot of effort there were few chances on goal. Lynn showed good possession but defences were on top, Michael Gash trying his luck from 25 yards in the seventh minute but his shot was well wide whilst at the other end Joe White, on loan from Stevenage, produced a good turn and shot on 19 minutes but his effort was also wide, albeit narrowly.
The home side won a number of corners and on the half hour had penalty appeals turned down while Lynn had the final chance of the half but Ryan Hawkins prodded wide.
Early chances in the second half fell to the Waders with White just failing to get on the end of a Matt Ball in but when they did take the lead on 54 minutes it was against the run of play, White getting on the end of a ball into the box and with a neat turn and shot put the ball past Alex Street.
It was a lead that lasted just four minutes. A long run by Adam Marriott on the right ended with the ball finding Chris Henderson whose shot hit the underside of the bar and although it bounced out and away to safety it was adjudged to have crossed the goal line.
Waders' midfielder Donovan Makoma, another loanee from Stevenage, then had a long range effort that went wide on 70 minutes but it was Lynn that were looking the more dangerous with substitute Craig Parker getting on the end of a Gash ball but he scuffed his shot wide.
Lynn took the lead on 77 minutes when Frazer Blake-Tracy went on a mazy run, seeing off several challenges before setting up Marriot who swept the ball home.
The Waders had a late chance to equalise but substitute Liam Brooks' goal bound effort took a deflection for a corner.
Biggleswade: Donkin, Bradshaw, Walster, Forbes, Gent, Longe-King, McNamara (Donnelly 84), Makoma, White, Ball (Kirkpatrick 86), Bell (Brooks 80). Subs: Donnelly, Brooks, Smith, Kirkpatrick, Allinson. Booked: Walster. Scorer: White 54
Lynn: Street, Richards, Blake-Tracy, Jarvis, Fryatt, McAuley, Clunan, Henderson (Castellan 87), Gash, Marriott, Hawkins (Parker 61). Subs: Limb, Parker, Castellan, Bastock. Scorer: Henderson 58, Marriott 77
Attendance: Reported as 202 but 157 on league website
After the game the club announced that defender Aaron Jones requires an operation to correct a knee problem and he is expected to be out of action for 6-8 weeks.