我注意到你的代码有几个问题。首先，我相信当进入这个页面时，首先谷歌会在向你显示页面内容之前向你显示“我同意条款和条件”弹出窗口，因此你需要先点击那个按钮。
此外，你应该直接在驱动程序上使用find_elements_by_xpath函数，而不是使用页面内容，因为这也允许你渲染javascript内容。你可以在这里找到更多信息：python tree.xpath return empty list
我使用了下面的代码来抓取标题。（我还更改了xpath，直接从google chrome中提取它们。您可以通过右键单击元素-〉inspect并在元素所在的元素选项卡中右键单击-〉copy -〉Copy xpath来完成此操作）

from selenium import webdriver
from webdriver_manager.chrome import ChromeDriverManager

# I used these for the code to work on my windows subsystem linux
option = webdriver.ChromeOptions()
option.add_argument('--no-sandbox') 
option.add_argument('--disable-dev-sh-usage')

driver = webdriver.Chrome(ChromeDriverManager().install(), options=option)
URL = 'https://www.google.com/travel/flights/searchtfs=CBwQAhopagwIAxIIL20vMHBseTASCjIwMjEtMTItMjNyDQgDEgkvbS8wMWYwOHIaKWoNCAMSCS9tLzAxZjA4chIKMjAyMS0xMi0yN3IMCAMSCC9tLzBwbHkwcAGCAQsI____________AUABSAGYAQE&tfu=EgYIAhAAGAA'

driver.get(URL)

driver.find_element_by_xpath('//*[@id="yDmH0d"]/c-wiz/div/div/div/div[2]/div[1]/div[4]/form/div[1]/div/button/span').click() # this is necessary to pres the I agree button

elements = driver.find_elements_by_xpath('//*[@id="yDmH0d"]/c-wiz[2]/div/div[2]/div/c-wiz/div/c-wiz/div[2]/div[3]/div[3]/c-wiz/div/div[2]/div[1]/div/div/ol/li')

for flight_tree in elements:
     title = flight_tree.find_element_by_xpath('.//*[@class="W6bZuc YMlIz"]').text

     print(title)

我尝试了下面的代码，屏幕最大化并有明确的等待，可以成功提取信息，请参阅下面：

示例代码：

driver = webdriver.Chrome(driver_path)
driver.maximize_window()
driver.get("https://www.google.com/travel/flights/searchtfs=CBwQAhopagwIAxIIL20vMHBseTASCjIwMjEtMTItMjNyDQgDEgkvbS8wMWYwOHIaKWoNCAMSCS9tLzAxZjA4chIKMjAyMS0xMi0yN3IMCAMSCC9tLzBwbHkwcAGCAQsI____________AUABSAGYAQE&tfu=EgYIAhAAGAA")
wait = WebDriverWait(driver, 10)
titles = wait.until(EC.presence_of_all_elements_located((By.XPATH, "//div/descendant::h3")))

for name in titles:
  print(name.text)
  price = name.find_element(By.XPATH, "./../following-sibling::div/descendant::span[2]").text
  print(price)

进口：

from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC

输出：

Tokyo
₹38,473
Mumbai
₹3,515
Dubai
₹15,846