Irelia - League of Legends Champion
Win Rate
52.0%
Pick Rate
3.1%

Ireliavs Kai'Sa

SFighterAssassin
Patch26.9
Matches514,344
LaneAll Lanes
TierAll Tiers
Last UpdatedMay 9, 2026
MethodologyData Methodology

Irelia vs Kai'Sa is a very close matchup in LoL patch 26.9. Irelia wins with a 50.0% win rate (+0.0%) over Kai'Sa based on 8 games. Irelia wins the early laning phase while Kai'Sa scales better into the late game. Below you'll find the best Irelia build, runes, laning stats, and strategies for the Irelia vs Kai'Sa matchup.

Irelia Matchup Breakdown

Use the dropdown to select an opponent and see a detailed breakdown of how Irelia performs against them. You'll get head-to-head win rates, laning stats, the best build and runes for the matchup, and early vs late game analysis — all based on real ranked data.

Compare against an opponent
Kai'Sa - 50.0% win rateKai'Sa(50.0%)
Irelia - 50.0% win rate in this matchup
Irelia
50.0% WR
VS
Kai'Sa vs Irelia matchup - 50.0% win rate
Kai'Sa
50.0% WR

Who Wins the Irelia vs Kai'Sa Matchup?

Irelia wins the Irelia vs Kai'Sa matchup
Winner
Irelia
Matches: 8
50.0%
Win Rate
50.0%
7.9
CS / min
7.8
829
DMG / min
744
14,942
Gold / game
13,948
419
Heal / min
154
1,357
DMG Mitigated / min
563
0.6
CC / min
0.1
100.0%
Early Game WR
0.0%
0.0%
Late Game WR
100.0%

Irelia vs Kai'Sa Matchup Summary

The Irelia vs Kai'Sa matchup is essentially a coin-flip matchup in League of Legends ranked play. Based on 8 recent matches analyzed, Irelia wins with a 50.0% win rate compared to Kai'Sa's 50.0%, giving Irelia a 0.0 percentage point advantage. Game phase dynamics play a critical role here: Irelia controls the early laning stage, but Kai'Sa outscales as the game goes longer. The matchup shifts dramatically depending on game length — Irelia needs to press advantages before Kai'Sa reaches their power spikes, while Kai'Sa should focus on safe farming and hitting key item breakpoints. The most significant statistical gap is in crowd control, where Irelia leads by 0.5s CC/min — a difference that heavily influences the outcome of trades and skirmishes. Irelia has a statistical edge, but the margin is close enough that respecting Kai'Sa's strengths is important. Trade when cooldowns are favorable, track the enemy jungler, and build toward your strongest item spikes to convert the slight advantage into a decisive lead. Understanding these matchup dynamics is essential for champion select decisions and in-game strategy when facing this lane opponent.

Irelia vs Kai'Sa Laning Phase Breakdown

Irelia wins the laning phase against Kai'Sa in League of Legends

Irelia is favored during the laning phase against Kai'Sa, winning 5 out of 5 key stat categories. Irelia holds advantages in farming, damage, gold income, crowd control and sustain, making them the stronger laner in this matchup.

Farming
7.9Irelia
7.8Kai'Sa
Irelia and Kai'Sa farm at nearly identical rates in this matchup, with only a 0.1 CS/min difference. Neither champion holds a meaningful farming advantage, so lane dominance will come from trading and jungle interaction rather than CS leads.
Damage
829Irelia
744Kai'Sa
Irelia heavily out-damages Kai'Sa by 85 DMG/min, dominating both short trades and all-in fights. Kai'Sa should avoid extended combat and instead focus on burst trade patterns — short engages followed by immediate disengagement — to avoid letting Irelia's sustained damage advantage take over.
Economy
14,942Irelia
13,948Kai'Sa
Irelia generates a commanding 994 more gold per game than Kai'Sa. This substantial economic advantage means Irelia consistently reaches key item breakpoints earlier, creating a compounding lead that grows throughout the game. Kai'Sa should focus on cost-effective item choices and avoid unnecessary deaths to prevent falling further behind.
Utility
0.6Irelia
0.1Kai'Sa
Irelia provides 0.5 seconds more crowd control per minute than Kai'Sa, offering better gank setup potential and slightly more team fight utility. This CC advantage helps Irelia coordinate with their jungler and control the pace of skirmishes.
Sustain
1,776Irelia
717Kai'Sa
Irelia vastly out-sustains Kai'Sa, healing and mitigating 1,059 more damage per minute. This massive durability gap means Irelia can absorb significant punishment and remain in lane while Kai'Sa is forced to recall. Building grievous wounds early is essential for Kai'Sa, and focusing on burst trade patterns rather than sustained fights is critical.

Best Irelia Build Against Kai'Sa

Armored Advance is the optimal boots choice against Kai'Sa, providing the mobility and stats Irelia needs most in this matchup. The top-performing core items for Irelia against Kai'Sa are Kraken Slayer, Death's Dance and Blade of The Ruined King. This combination gives Irelia an effective balance of damage, survivability, and utility for the matchup. This build achieves a solid 50.0% win rate across 2 games, proving it to be a reliable item path when facing Kai'Sa. Adjustments may be needed based on team compositions and game state, but this build provides the strongest foundation for the Irelia vs Kai'Sa matchup.

Early Game vs Late Game

Early Game
Irelia
100.0%
+100.0% advantage
Irelia early game win rateIrelia100.0%
Kai'Sa early game win rateKai'Sa0.0%
Late Game
Kai'Sa
100.0%
+100.0% advantage
Irelia late game win rateIrelia0.0%
Kai'Sa late game win rateKai'Sa100.0%

Irelia dominates the early game (first 15 minutes) with a commanding 100.0% win rate — a 100.0 percentage point lead over Kai'Sa. This lopsided early game means Irelia can dictate the pace of the lane from level 1, controlling trades, wave state, and river priority.

Kai'Sa is far superior in the late game (25+ minutes), boasting a 100.0% win rate — 100.0 points above Irelia. Extended games heavily favor Kai'Sa, whose kit and scaling make them a dominant force in team fights and objective control.

This matchup features a dramatic power shift: Irelia must aggressively press their early advantage and close out the game before Kai'Sa reaches their scaling breakpoints. If Kai'Sa survives the laning phase without falling too far behind, the matchup flips in their favor. Dragon and Rift Herald control are pivotal — the team that secures early objectives can snowball or buy time to scale.

Best Irelia Runes Against Kai'Sa

Precision rune tree - Irelia primary runes vs Kai'SaPrecision
Press the Attack - best Irelia rune vs Kai'SaTriumph - best Irelia rune vs Kai'SaLegend: Alacrity - best Irelia rune vs Kai'SaLast Stand - best Irelia rune vs Kai'Sa
Domination rune tree - Irelia secondary runes vs Kai'SaDomination
Sudden Impact - best Irelia rune vs Kai'SaTreasure Hunter - best Irelia rune vs Kai'Sa
100.0% WR

The Precision primary with Domination secondary combination helps Irelia maximize their potential in this closely contested matchup, providing the right mix of offensive and defensive tools to edge out Kai'Sa.


Irelia matchup data for League of Legends patch 26.9. The table below shows Irelia's win rate, gold difference, and performance stats against every champion in the current meta. Click any champion name to see a detailed head-to-head breakdown including the best Irelia build, runes, laning stats, and early vs late game analysis for that specific matchup.

Irelia matchup win rates and stats in League of Legends patch 26.9
Opponent
Win Rate
Matches
CS/min
DMG/min
Gold/game
Early WR
Late WR
42.34%1117.684913,04839.6%44.4%
50.56%897.589412,85250.0%51.2%
43.37%837.778213,08750.0%37.8%
53.66%827.688412,92447.4%59.1%
51.90%797.781512,89653.9%50.0%
44.00%757.773012,73241.7%46.1%
47.83%698.297414,78650.0%46.7%
50.00%647.490112,79342.3%55.3%
40.00%607.683612,26937.0%42.4%
58.33%607.783213,69263.0%54.5%
46.67%607.888013,35656.7%36.7%
44.83%587.781912,95146.1%43.8%
53.57%567.381912,88648.0%58.1%
58.18%558.284413,33357.7%58.6%
47.27%557.681313,52145.0%48.6%
40.38%527.675010,70541.2%38.9%
56.86%527.979013,75163.6%51.7%
40.00%507.584111,79644.8%33.3%
51.02%497.798212,63256.0%45.8%
55.32%478.191912,80857.1%52.6%
43.48%467.483212,14945.0%42.3%
42.86%427.684412,50838.9%45.8%
59.52%427.978712,23166.7%46.7%
41.46%418.41,31912,97244.4%39.1%
42.50%407.981413,05444.4%40.9%
68.42%387.988214,13164.3%70.8%
55.26%387.687014,31646.7%60.9%
59.46%378.092512,91672.7%40.0%
50.00%368.176812,95960.0%37.5%
48.57%357.590412,21956.3%42.1%
50.00%347.598613,70641.2%58.8%
51.52%337.51,00113,11458.8%43.8%
46.88%327.493014,59970.0%36.4%
54.84%317.884112,72382.3%21.4%
35.48%317.380012,81535.7%35.3%
48.39%317.593413,32330.8%61.1%
56.67%308.379312,20952.6%63.6%
30.00%307.487612,28116.7%38.9%
53.33%308.186512,95250.0%57.1%
46.67%307.593813,83458.3%38.9%
51.72%297.194714,36253.3%50.0%
44.83%297.684811,49135.7%53.3%
62.07%297.875314,08272.7%55.6%
57.14%287.785014,72475.0%50.0%
39.29%287.690011,73646.1%33.3%
59.26%278.290813,07275.0%36.4%
34.62%267.674011,04937.5%30.0%
34.62%267.176512,76745.5%26.7%
65.38%267.690412,82366.7%64.3%
64.00%257.996911,98658.8%75.0%
68.00%257.891413,58375.0%61.5%
56.00%257.379212,46850.0%60.0%
40.00%257.575813,97760.0%26.7%
45.83%247.587714,38437.5%50.0%
41.67%248.286813,24541.7%41.7%
60.87%238.399314,54158.3%63.6%
60.87%238.192612,85868.8%42.9%
47.83%238.11,00814,56955.6%42.9%
45.45%228.395014,66855.6%38.5%
71.43%218.293515,06775.0%69.2%
55.00%207.271712,96625.0%75.0%
65.00%208.079014,89444.4%81.8%
75.00%207.979312,76175.0%75.0%
68.42%198.41,05013,84377.8%60.0%
50.00%188.072612,52054.5%42.9%
44.44%188.077713,57563.6%14.3%
61.11%187.072011,91366.7%55.6%
66.67%188.299813,67770.0%62.5%
64.71%178.21,02213,22650.0%85.7%
58.82%177.31,12413,88050.0%63.6%
58.82%177.796413,18550.0%66.7%
68.75%168.084913,26083.3%60.0%
33.33%157.895613,83940.0%20.0%
40.00%158.098813,82437.5%42.9%
60.00%157.896714,46371.4%50.0%
66.67%157.892513,10171.4%62.5%
53.33%158.692014,40260.0%50.0%
40.00%157.894313,97166.7%22.2%
57.14%148.21,00311,66355.6%60.0%
42.86%147.684212,71083.3%12.5%
69.23%137.681813,79175.0%66.7%
61.54%137.772311,62971.4%50.0%
38.46%137.179813,11166.7%14.3%
38.46%137.488611,14028.6%50.0%
30.77%137.078612,21975.0%11.1%
69.23%138.291815,54233.3%80.0%
38.46%137.076612,69475.0%22.2%
50.00%126.688212,35750.0%50.0%
41.67%128.190312,96733.3%50.0%
54.55%117.680912,40640.0%66.7%
63.64%117.677714,77766.7%62.5%
40.00%107.585714,63166.7%28.6%
33.33%97.885412,73925.0%40.0%
66.67%97.283113,75075.0%60.0%
75.00%86.399014,48475.0%75.0%
37.50%82.762911,92833.3%50.0%
50.00%88.191512,67840.0%66.7%
62.50%87.599015,34283.3%0.0%
50.00%87.982914,942100.0%0.0%
25.00%87.790718,9880.0%28.6%
37.50%88.065013,10540.0%33.3%
42.86%76.694613,80133.3%50.0%
28.57%76.797516,0600.0%50.0%
66.67%64.464315,283100.0%60.0%
66.67%68.41,04617,950100.0%33.3%
60.00%58.01,27311,08133.3%100.0%
80.00%57.177613,114100.0%66.7%
40.00%56.797611,79650.0%0.0%
80.00%56.993714,98666.7%100.0%
20.00%56.692217,8220.0%20.0%

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Irelia vs Kai'Sa - Frequently Asked Questions

How does Irelia do against Kai'Sa in League of Legends?

Irelia wins the Irelia vs Kai'Sa matchup with a 50.0% win rate compared to Kai'Sa's 50.0%, a 0.0 percentage point difference. This data is based on 8 recent ranked games in patch 26.9.

How does Irelia do against Kai'Sa in the early game?

In the early game, Irelia has the advantage against Kai'Sa with a 100.0% win rate versus 0.0%. Irelia players should look to press their lane advantage through aggressive trades and wave control during the first 15 minutes.

How does Irelia do against Kai'Sa in the late game?

In the late game, Kai'Sa takes over the Irelia vs Kai'Sa matchup with a 100.0% win rate compared to 0.0%. Kai'Sa scales better into team fights and objective contests after 25 minutes.

Who wins the Irelia vs Kai'Sa matchup?

Irelia wins the matchup against Kai'Sa with a 50.0% win rate in League of Legends patch 26.9. The 0.0 percentage point advantage means Irelia is slightly favored in this lane matchup based on 8 games analyzed.

What is the best Irelia build against Kai'Sa?

The best Irelia build against Kai'Sa includes Kraken Slayer, Death's Dance, Blade of The Ruined King with Armored Advance. This build achieves a 50.0% win rate in the matchup. Check the matchup breakdown above for the full item path and build order.

What are the best Irelia runes against Kai'Sa?

The best Irelia runes against Kai'Sa use the Precision primary tree with Domination secondary. This rune setup achieves a 100.0% win rate in the Irelia vs Kai'Sa matchup. See the full rune breakdown in the matchup comparison above.

Does Irelia counter Kai'Sa?

Yes, Irelia has a favorable matchup against Kai'Sa with a 50.0% win rate. Irelia slightly edges out Kai'Sa in lane based on current patch 26.9 data.

How do I play Irelia against Kai'Sa?

When playing Irelia against Kai'Sa, leverage your statistical advantages by trading aggressively during favorable windows. You have early game priority — look for kills and zone control before first recall. Build the recommended items and runes for this specific matchup for the best results.