In the 4,295 at-bats in his pro career, Flagstead has accrued an average at the plate of .289 in addition to 1,241 hits. He has hit it out of the park 42 times, with 1,744 bases in total and a .047 slugging percentage. Flagstead has drawn a free base 484 times while striking out on 297 tries. He has recorded 665 runs in addition to having earned 477 RBIs. His on-base percentage comes in at .368 and he also has a career OPS of .415.
Flagstead has recorded 60 bases in total with 39 hits out of 156 at-bats. He has notched 21 runs over the course of the season and has hit 2 balls out of the park. He has accounted for a batting average at the plate of .250 while having an OPS of .708. He has accumulated an on-base percentage of .324 as well as 17 walks and 9 strikeouts. So far this year, Ira Flagstead has knocked in 21 runs and has accounted for a slugging percentage of .385.
| Year | Team | BA | HR | H | BB | R | RBI | OBP | PA | AB | OPS | OPS+ | 2B | 3B | G | SLG | SB | CS | TB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Career | .290 | 40 | 1,202 | 467 | 644 | 456 | .370 | 4,798 | 4,139 | .776 | 103 | 262 | 50 | 1,218 | .407 | 71 | 60 | 1,684 | 288 | |
| 1930 | PIT | .250 | 2 | 39 | 17 | 21 | 21 | .324 | 179 | 156 | .708 | 70 | 7 | 4 | 44 | .385 | 1 | 2 | 60 | 9 |
| 1929 | TOT | .256 | 0 | 32 | 13 | 22 | 18 | .326 | 145 | 125 | .638 | 62 | 5 | 1 | 58 | .312 | 3 | 3 | 39 | 8 |
| 1929 | TOT | .240 | 0 | 18 | 9 | 14 | 12 | .321 | 90 | 75 | .601 | 57 | 3 | 0 | 32 | .280 | 2 | 3 | 21 | 6 |
| 1929 | BOS | .306 | 0 | 11 | 5 | 9 | 3 | .390 | 42 | 36 | .751 | 97 | 2 | 0 | 14 | .361 | 1 | 3 | 13 | 1 |
| 1929 | WSH | .179 | 0 | 7 | 4 | 5 | 9 | .256 | 48 | 39 | .461 | 20 | 1 | 0 | 18 | .205 | 1 | 0 | 8 | 5 |
| 1929 | PIT | .280 | 0 | 14 | 4 | 8 | 6 | .333 | 55 | 50 | .693 | 70 | 2 | 1 | 26 | .360 | 1 | 0 | 18 | 2 |
| 1928 | BOS | .290 | 1 | 148 | 60 | 84 | 39 | .366 | 587 | 510 | .758 | 103 | 41 | 4 | 140 | .392 | 12 | 9 | 200 | 23 |
| 1927 | BOS | .285 | 4 | 133 | 57 | 63 | 69 | .374 | 555 | 466 | .775 | 104 | 26 | 8 | 131 | .401 | 12 | 2 | 187 | 25 |
| 1926 | BOS | .299 | 3 | 124 | 36 | 65 | 31 | .363 | 463 | 415 | .792 | 110 | 31 | 7 | 98 | .429 | 4 | 6 | 178 | 22 |
| 1925 | BOS | .280 | 6 | 160 | 63 | 84 | 61 | .356 | 659 | 572 | .741 | 89 | 38 | 2 | 148 | .385 | 5 | 6 | 220 | 30 |
| 1924 | BOS | .307 | 5 | 172 | 77 | 106 | 43 | .401 | 661 | 560 | .823 | 113 | 35 | 7 | 149 | .421 | 10 | 13 | 236 | 41 |
| 1923 | TOT | .311 | 8 | 119 | 37 | 55 | 53 | .379 | 435 | 383 | .833 | 119 | 23 | 4 | 110 | .454 | 7 | 10 | 174 | 26 |
| 1923 | DET | .000 | 0 | 0 | 0 | 0 | 0 | .000 | 1 | 1 | .000 | -100 | 0 | 0 | 1 | .000 | 0 | 0 | 0 | 0 |
| 1923 | BOS | .312 | 8 | 119 | 37 | 55 | 53 | .380 | 434 | 382 | .835 | 119 | 23 | 4 | 109 | .455 | 7 | 10 | 174 | 26 |
| 1922 | DET | .308 | 3 | 28 | 14 | 21 | 8 | .411 | 111 | 91 | .939 | 146 | 5 | 3 | 44 | .527 | 0 | 1 | 48 | 16 |
| 1921 | DET | .305 | 0 | 79 | 21 | 40 | 31 | .371 | 297 | 259 | .753 | 93 | 16 | 2 | 85 | .382 | 8 | 4 | 99 | 21 |
| 1920 | DET | .235 | 3 | 73 | 37 | 40 | 35 | .318 | 359 | 311 | .656 | 76 | 13 | 5 | 110 | .338 | 3 | 4 | 105 | 27 |
| 1919 | DET | .331 | 5 | 95 | 35 | 43 | 47 | .416 | 342 | 287 | .897 | 153 | 22 | 3 | 97 | .481 | 6 | 0 | 138 | 39 |
| 1917 | DET | .000 | 0 | 0 | 0 | 0 | 0 | .000 | 4 | 4 | .000 | -100 | 0 | 0 | 4 | .000 | 0 | 0 | 0 | 1 |
