Tripadvisor-branded hotels revenue primarily includes hotel auction revenue, primarily click-based advertising revenue, and hotel B2B revenue, which includes primarily subscription-based advertising and hotel sponsored placements revenue. For the three and nine months ended September 30, 2022, 66% and 68%, respectively, and for the three and nine months ended September 31, 2021, 67% and 69%, respectively, of Tripadvisor Core segment revenue was derived from Tripadvisor-branded hotels revenue. Tripadvisor-branded hotels revenue increased $45 million and $163 million during the three and nine months ended September 30, 2022, respectively, when compared to the same periods in 2021. This increase was primarily driven by Tripadvisor’s hotel auction (or hotel meta) revenue across all markets, and, to a lesser extent, hotel B2B revenue, due to growing consumer travel demand and travel industry recovery and easing of government travel and leisure restrictions related to COVID-19. As consumer travel demand continued to increase during the first three quarters of 2022, Tripadvisor saw continued improvement in hotel auction monetization, as cost-per-click rates during the first three quarters of 2022 were near or exceeded parity of 2019's comparable period, which enabled increased efficient marketing investment on performance channels, enhancing Tripadvisor’s 2022 hotel auction revenue growth.
Tripadvisor-branded display-based advertising revenue increased $4 million and $28 million during the three and nine months ended September 30, 2022, respectively, when compared to the same periods in 2021, primarily driven by an increase in marketing spend from Tripadvisor’s advertisers in correlation with increasing consumer demand. While slower to recover than Tripadvisor-branded hotels revenue, Tripadvisor’s display and platform revenue increased 14% and 41% during the three and nine months ended September 30, 2022, respectively, when compared to the same periods in 2021. In addition, and by means of also showing a comparison to a pre-COVID-19 timeframe, Tripadvisor-branded display and platform revenue for both the three and nine months ended September 30, 2022 was approximately 80% of 2019’s comparable periods, an increase from approximately 71% and 57% of 2019’s comparable periods during the three and nine months ended September 30, 2021, respectively.
Tripadvisor experiences and dining revenue includes intercompany (intersegment) revenue consisting of affiliate marketing commissions earned primarily from experience bookings and, to a lesser extent, restaurant reservation bookings, on Tripadvisor-branded websites and mobile apps that are fulfilled by Viator and TheFork, respectively, which are eliminated on a consolidated basis, in addition to revenue from Tripadvisor’s restaurant service offerings. Tripadvisor experiences and dining revenue increased $22 million and $50 million during the three and nine months ended September 30, 2022, respectively, when compared to the same periods in 2021, primarily driven by Tripadvisor’s experiences offering as a result of the growing travel demand recovery fueled by the easing of government restrictions and increasing consumer travel demand.
Other revenue includes rentals revenue, in addition to primarily click-based advertising and display-based advertising revenue from cruises, flights and cars offerings on Tripadvisor websites and mobile apps. Other revenue increased $1 million and $5 million during the three and nine months ended September 30, 2022, respectively, when compared to the same periods in 2021. The increases during the three and nine months ended September 30, 2022 were primarily due to the impact of growing consumer travel demand and travel industry recovery on Tripadvisor’s business, as discussed above.
Viator revenue increased $101 million and $241 million during the three and nine months ended September 30, 2022, respectively, when compared to the same periods in 2021. Tripadvisor began to see improvement in Viator’s financial results during the third quarter of 2021, and this trend has continued through the third quarter of 2022, as revenue increased by 138% during the three months ended September 30, 2022, when compared to the same period in 2021, primarily driven by the travel demand recovery and the continued easing of government restrictions, partially offset by the negative impact of foreign currency fluctuations. By means of showing a comparison to a pre-COVID-19 timeframe, Viator revenue for the third quarter of 2022 was approximately 179% of 2019’s comparable period, an increase from approximately 75% of 2019’s comparable period during the third quarter of 2021.
TheFork segment revenue increased $5 million and $38 million during the three and nine months ended September 30, 2022, respectively, when compared to the same periods in 2021, driven by the consumer travel demand recovery and various government restrictions on restaurants being lifted, partially offset by the negative impact of foreign currency fluctuations.
Operating expense. Operating expense increased $14 million and $40 million for the three and nine months ended September 30, 2022, respectively, when compared to the same periods in the prior year primarily due to increases of $9