Here is a list of the 88 modern constellations by their area in the sky, measured in square degrees.

Rank Constellation Area

1 Hydra 1303 sq.deg.

2 Virgo 1294 sq.deg.

3 Ursa Major 1280 sq.deg.

4 Cetus 1231 sq.deg.

5 Hercules 1225 sq.deg.

6 Eridanus 1138 sq.deg.

7 Pegasus 1121 sq.deg.

8 Draco 1083 sq.deg.

9 Centaurus 1060 sq.deg.

10 Aquarius 980 sq.deg.

11 Ophiuchus 948 sq.deg.

12 Leo 947 sq.deg.

13 Bo÷tes 907 sq.deg.

14 Pisces 889 sq.deg.

15 Sagittarius 867 sq.deg.

16 Cygnus 804 sq.deg.

17 Taurus 797 sq.deg.

18 Camelopardalis 757 sq.deg.

19 Andromeda 722 sq.deg.

20 Puppis 673 sq.deg.

21 Auriga 657 sq.deg.

22 Aquila 652 sq.deg.

23 Serpens * 637 sq.deg.

24 Perseus 615 sq.deg.

25 Cassiopeia 598 sq.deg.

26 Orion 594 sq.deg.

27 Cepheus 588 sq.deg.

28 Lynx 545 sq.deg.

29 Libra 538 sq.deg.

30 Gemini 514 sq.deg.

31 Cancer 506 sq.deg.

32 Vela 500 sq.deg.

33 Scorpius 497 sq.deg.

34 Carina 494 sq.deg.

35 Monoceros 482 sq.deg.

36 Sculptor 475 sq.deg.

37 Phoenix 469 sq.deg.

38 Canes Venatici 465 sq.deg.

39 Aries 441 sq.deg.

40 Capricornus 414 sq.deg.

41 Fornax 398 sq.deg.

42 Coma Berenices 386 sq.deg.

43 Canis Major 380 sq.deg.

44 Pavo 378 sq.deg.

45 Grus 366 sq.deg.

46 Lupus 334 sq.deg.

47 Sextans 314 sq.deg.

48 Tucana 295 sq.deg.

49 Indus 294 sq.deg.

50 Octans 291 sq.deg.

51 Lepus 290 sq.deg.

52 Lyra 286 sq.deg.

53 Crater 282 sq.deg.

54 Vulpecula 278 sq.deg.

55 Columba 270 sq.deg.

56 Ursa Minor 256 sq.deg.

57 Telescopium 252 sq.deg.

58 Horologium 249 sq.deg.

59 Pictor 247 sq.deg.

60 Piscis Austrinus 245 sq.deg.

61 Hydrus 243 sq.deg.

62 Antlia 239 sq.deg.

63 Ara 237 sq.deg.

64 Leo Minor 232 sq.deg.

65 Pyxis 221 sq.deg.

66 Microscopium 210 sq.deg.

67 Apus 206 sq.deg.

68 Lacerta 201 sq.deg.

69 Delphinus 189 sq.deg.

70 Corvus 184 sq.deg.

71 Canis Minor 182 sq.deg.

72 Corona Borealis 179 sq.deg.

Dorado 179 sq.deg.

74 Norma 165 sq.deg.

75 Mensa 153 sq.deg.

76 Volans 141 sq.deg.

77 Musca 138 sq.deg.

78 Chamaeleon 132 sq.deg.

Triangulum 132 sq.deg.

80

Corona Australis 128 sq.deg.

81 Caelum 125 sq.deg.

82 Reticulum 114 sq.deg.

83 Triangulum Australe 110 sq.deg.

84 Scutum 109 sq.deg.

85 Circinus 93 sq.deg.

86 Sagitta 80 sq.deg.

87 Equuleus 72 sq.deg.

88 Crux 68 sq.deg.

Note:

* Serpens is divided into two parts: Serpens Caput (429 sq.deg.) and Serpens Cauda (208 sq.deg.).