| Doubles | |
|---|---|
| 2018 Ladies Open Lugano | |
| Champions |  Kirsten Flipkens Elise Mertens |
| Runners-up |  Vera Lapko Aryna Sabalenka |
| Final score | 6–1, 6–3 |
Hsieh Su-wei and Monica Niculescu were the defending champions, but chose not to participate this year.
Kirsten Flipkens and Elise Mertens won the title, defeating Vera Lapko and Aryna Sabalenka in the final, 6–1, 6–3.
Kirsten Flipkens / Elise Mertens (champions)
Alicja Rosolska / 
Abigail Spears (semifinals)
Raluca Olaru / 
Anna Smith (quarterfinals)
Monique Adamczak / 
Xenia Knoll (quarterfinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | K Flipkens E Mertens | 6 | 4 | [10] | |||||||||||||||||||||||
 N Dzalamidze V Kudermetova | 4 | 6 | [1] | 1 | K Flipkens E Mertens | 6 | 6 | ||||||||||||||||||||
| V Golubic J Teichmann | 6 | 6 | V Golubic J Teichmann | 3 | 4 | ||||||||||||||||||||||
 O Kalashnikova  A Rus | 4 | 2 | 1 | K Flipkens E Mertens | 6 | 7 | |||||||||||||||||||||
| 3 | R Olaru A Smith | 6 | 6 | PR |  Kr Plíšková  G Voskoboeva | 3 | 5 | ||||||||||||||||||||
 D Jurak J Moore | 2 | 2 | 3 | R Olaru A Smith | 5 | 4 | |||||||||||||||||||||
| PR | Kr Plíšková G Voskoboeva | 7 | 6 | PR | Kr Plíšková G Voskoboeva | 7 | 6 | ||||||||||||||||||||
| Alt |  RL Jani  D Kovinić | 5 | 1 | 1 | K Flipkens E Mertens | 6 | 6 | ||||||||||||||||||||
| V Lapko A Sabalenka | 6 | 6 | V Lapko A Sabalenka | 1 | 3 | ||||||||||||||||||||||
 M Barthel C Witthöft | 3 | 2 | V Lapko A Sabalenka | 6 | 6 | ||||||||||||||||||||||
| M Buzărnescu A Sasnovich | 6 | 3 | [7] | 4 | M Adamczak X Knoll | 4 | 3 | ||||||||||||||||||||
| 4 | M Adamczak X Knoll | 1 | 6 | [10] | V Lapko A Sabalenka | 6 | 3 | [10] | |||||||||||||||||||
| N Geuer E Wacanno | 7 | 6 | 2 | A Rosolska A Spears | 2 | 6 | [7] | ||||||||||||||||||||
| M Vondroušová R Voráčová | 5 | 4 | N Geuer E Wacanno | 5 | 6 | [2] | |||||||||||||||||||||
| PR |  M Minella A Van Uytvanck | 3 | 62 | 2 | A Rosolska A Spears | 7 | 4 | [10] | |||||||||||||||||||
| 2 | A Rosolska A Spears | 6 | 77 | ||||||||||||||||||||||||
Roberta Vinci was the defending champion, but lost in the quarterfinals to unseeded Kristina Mladenovic.
Agnieszka Radwańska was the defending champion, but lost in the semifinals to Daria Gavrilova.
Kiki Bertens and Johanna Larsson were the defending champions, but withdrew from their first round match.
Ekaterina Makarova and Elena Vesnina were the defending champions, but Vesnina was unable to compete due to an injury. Makarova played alongside Vera Zvonareva, but lost in the second round to Elise Mertens and Demi Schuurs.
Raluca Olaru and Olga Savchuk were the defending champions, but lost in the quarterfinals to Veronika Kudermetova and Aryna Sabalenka.
Anett Kontaveit was the defending champion, but lost in the first round to Veronika Kudermetova.
Dominika Cibulková and Kirsten Flipkens were the defending champions, but Cibulková chose not to participate this year. Flipkens played alongside Kiki Bertens, but lost in the final to Elise Mertens and Demi Schuurs when Flipkens had to retire with the score at 3–3.
Elina Svitolina was the defending champion, but lost to Sloane Stephens in the semifinals.
Elise Mertens and Demi Schuurs were the defending champions, but Mertens chose not to participate and Schuurs chose to compete in Sydney instead.
Kirsten Flipkens and Elise Mertens were the defending champions, but chose not to participate.
Barbora Krejčíková and Kateřina Siniaková were the defending champions, but lost in the first round to Nadiia Kichenok and Abigail Spears.
Andreja Klepač and María José Martínez Sánchez were the defending champions, but Klepač chose not to participate this year.
Barbora Krejčíková and Kateřina Siniaková were the defending champions, but lost in the semifinals to Gabriela Dabrowski and Xu Yifan.
Elise Mertens and Aryna Sabalenka defeated Ashleigh Barty and Victoria Azarenka in the final, 7–5, 7–5, to win the women's doubles tennis title at the 2019 US Open.
Elise Mertens was the defending champion, but lost in the second round to Yulia Putintseva.
Victoria Azarenka and Ashleigh Barty are the defending champions but neither player chose to participate.
This was the first edition of the tournament.
This was the first edition of the tournament. Shuko Aoyama and Ena Shibahara won the title, defeating Hayley Carter and Luisa Stefani in the final, 7–6(7–5), 6–4.
This was the first edition of the event.
Coco Gauff and Jessica Pegula won the title, defeating Veronika Kudermetova and Elise Mertens in the final, 3–6, 7–5, [10–5].