Exhibit 99.1

Trip.com Group Reports Unaudited Third Quarter of 2020 Financial Results

Shanghai, China, December 1, 2020—Trip.com Group Limited (Nasdaq: TCOM) (“Trip.com Group” or the “Company”), a leading provider of online travel and related services, including accommodation reservation, transportation ticketing, packaged-tour and in-destination services, corporate travel management, and other travel-related services, today announced its unaudited financial results for the third quarter ended September 30, 2020.

Key Highlights

“In the third quarter of 2020, the global travel industry continued to be under significant pressure from the COVID-19 pandemic. However, in China, we have already seen most of our major business segments return to pre-COVID level of activities in recent months. The speedy recovery in our China market demonstrated once again the strong resilience of the travel industry,” said James Liang, Executive Chairman. “Recent progress in the development of effective vaccines has been promising. We look forward to seeing more of our global markets resuming travel activities, following the successful footsteps we have witnessed in China.”

“Although challenges related to COVID-19 continue to impact our global business in the third quarter, we were able to quickly adapt our operations and showed strong profitability amid great uncertainties” said Jane Sun, Chief Executive Officer. “We are glad to see that the positive growth trajectory in China exiting the third quarter has extended through the October Golden Week and sustained into the fourth quarter. We will continue to stay lean while investing in the necessary resources to make sure we capture even larger market share as the market rebounds.”

Third quarter of 2020 Financial Results and Business Updates

The Company’s results for the third quarter of 2020 were negatively impacted by the pandemic. However, benefiting from the containment of COVID-19 in China, the Company’s domestic business has shown a strong recovery, which has contributed to substantially all of its total revenue.

For the third quarter of 2020, Trip.com Group reported net revenue of RMB5.5 billion (US$805 million), representing a 48% decrease from the same period in 2019. Net revenue for the third quarter of 2020 increased by 73% from the previous quarter.

Accommodation reservation revenue for the third quarter of 2020 was RMB2.5 billion (US$365 million), representing a 40% decrease from the same period in 2019, and a 98% increase from the previous quarter, primarily due to the recovery of China domestic market.

Transportation ticketing revenue for the third quarter of 2020 was RMB1.9 billion (US$280 million), representing a 49% decrease from the same period in 2019, and a 66% increase from the previous quarter, primarily due to the recovery of China domestic market.

Packaged-tour revenue for the third quarter of 2020 was RMB326 million (US$48 million), representing an 80% decrease from the same period in 2019, and a 151% increase from the previous quarter, primarily due to the easement of cross-region travel restrictions in China since mid-July.

Corporate travel revenue for the third quarter of 2020 was RMB282 million (US$42 million), representing a 16% decrease from the same period in 2019, and a 74% increase from the previous quarter, primarily due to the recovery of China domestic market.

Gross margin was 81% for the third quarter of 2020, which increased from 79% for the same period in 2019 and 72% for the previous quarter.

Product development expenses for the third quarter of 2020 decreased by 28% to RMB2.0 billion (US$296 million) from the same period in 2019 and increased by 11% from the previous quarter, primarily due to the fluctuations in expenses related to product development personnel. Product development expenses for the third quarter of 2020 accounted for 37% of the net revenue for the same period. Excluding share-based compensation charges, non-GAAP product development expenses for the third quarter of 2020 accounted for 32% of the net revenue for the same period, which increased from 25% in the same period in 2019 and decreased from 49% in the previous quarter.

Sales and marketing expenses for the third quarter of 2020 decreased by 54% to RMB1.1 billion (US$166 million) from the same period in 2019, primarily due to a decrease in expenses relating to sales and marketing promotion activities. Sales and marketing expenses for the third quarter of 2020 increased by 71% from the previous quarter, primarily due to an increase in expenses relating to sales and marketing promotion activities because of the recovery of the Company’s China domestic business. Sales and marketing expenses for the third quarter of 2020 accounted for 21% of the net revenue for the same period. Excluding share-based compensation charges, non-GAAP sales and marketing expenses for the third quarter of 2020 accounted for 20% of the net revenue for the same period, which decreased from 23% in the same period in 2019 and remained consistent with the previous quarter.

General and administrative expenses for the third quarter of 2020 decreased by 38% to RMB505 million (US$74 million) from the same period in 2019, primarily due to a reversal of bad debt provision for the Company’s travel suppliers reflecting the change in credit risk with travel industry recovery, offset partially by personnel restructuring cost of certain overseas subsidiaries, and decreased by 2% from the previous quarter. General and administrative expenses for the third quarter of 2020 accounted for 9% of the net revenue for the same period. Excluding share-based compensation charges, non-GAAP general and administrative expenses accounted for 5% of the net revenue for the same period, which decreased from 6% in same period in 2019 and 10% in the previous quarter.

Income from operations for the third quarter of 2020 was RMB790 million (US$117 million), compared to income of RMB2.2 billion in the same period in 2019 and loss of RMB688 million in the previous quarter. Excluding share-based compensation charges, non-GAAP income from operations was RMB1.3 billion (US$196 million), compared to income of RMB2.6 billion in the same period in 2019 and loss of RMB200 million in the previous quarter.

Operating margin was 14% for the third quarter of 2020, compared to 21% in the same period in 2019, and -22% in the previous quarter. Excluding share-based compensation charges, non-GAAP operating margin was 24%, compared to 25% in the same period in 2019 and -6% in the previous quarter.

Income tax expense for the third quarter of 2020 was RMB245 million (US$36 million), compared to expense of RMB365 million in the same period of 2019 and RMB201 million in the previous quarter. The change in our effective tax rate was primarily due to the non-taxable income of the fair value changes in equity securities investments and exchangeable senior notes.

Net income attributable to Trip.com Group’s shareholders for the third quarter of 2020 was RMB1.6 billion (US$234 million), compared to net income attributable to Trip.com Group’s shareholders of RMB793 million in the same period in 2019 and net loss attributable to Trip.com Group’s shareholders of RMB476 million in the previous quarter. Excluding share-based compensation charges and fair value changes of equity securities investments and exchangeable senior notes, non-GAAP net income attributable to Trip.com Group’s shareholders was RMB1.4 billion (US$208 million), compared to non-GAAP net income attributable to Trip.com Group’s shareholders of RMB2.3 billion in the same period in 2019 and non-GAAP net loss attributable to Trip.com Group’s shareholders of RMB1.2 billion in the previous quarter.

Diluted earnings per ADS were RMB2.61 (US$0.38) for the third quarter of 2020. Excluding share-based compensation charges and fair value changes of equity securities investments and exchangeable senior notes, non-GAAP diluted earnings per ADS were RMB2.32 (US$0.34) for the third quarter of 2020.

As of September 30, 2020, the balance of cash and cash equivalents, restricted cash, short-term investment, held to maturity time deposit and financial products was RMB66.1 billion (US$9.7 billion).

Business Outlook

As a result of the continued negative impact due to COVID-19 in the fourth quarter of 2020, the Company expects net revenue to decrease by approximately 37% to 42% year-over-year for the fourth quarter of 2020. This forecast reflects the current and preliminary view based on best information available at the time, which is subject to change.

Conference Call

Trip.com Group’s management team will host a conference call at 7:00PM U.S. Eastern Time on December 1, 2020 (or 8:00AM on December 2, 2020 in the Shanghai/Hong Kong Time) following the announcement.

The conference call will be available on Webcast live and replay at: https://investors.trip.com. The call will be archived for twelve months at this website.

All participants must pre-register to join this conference call using the Participant Registration link below: https://s1.c-conf.com/diamondpass/10011064-jijA6p.html

Upon registration, each participant will receive details for this conference call, including dial-in numbers, passcode and a unique access PIN. To join the conference, please dial the number provided, enter the passcode followed by your PIN, and you will join the conference instantly.

A telephone replay of the call will be available after the conclusion of the conference call until December 9, 2020.

The dial-in details for the replay:

International dial-in number: +61-7-3107-6325

Passcode: 10011064

Safe Harbor Statement

This announcement contains forward-looking statements. These statements are made under the “safe harbor” provisions of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by terminology such as “may,” “will,” “expect,” “anticipate,” “future,” “intend,” “plan,” “believe,” “estimate,” “is/are likely to,” “confident” or other similar statements. Among other things, quotations from management and the Business Outlook section in this press release, as well as Trip.com Group’s strategic and operational plans, contain forward-looking statements. Forward-looking statements involve inherent risks and uncertainties. A number of important factors could cause actual results to differ materially from those contained in any forward-looking statement. Potential risks and uncertainties include, but are not limited to, the potential impact of the COVID-19 to Trip.com Group’s business operations, severe or prolonged downturn in the global or Chinese economy, general declines or disruptions in the travel industry, volatility in the trading price of Trip.com Group’s ADSs, Trip.com Group’s reliance on its relationships and contractual arrangements with travel suppliers and strategic alliances, failure to compete against new and existing competitors, failure to successfully manage current growth and potential future growth, risks associated with any strategic investments or acquisitions, seasonality in the travel industry in the relevant jurisdictions where Trip.com Group operates, failure to successfully develop Trip.com Group’s existing or future business lines, damage to or failure of Trip.com Group’s infrastructure and technology, loss of services of Trip.com Group’s key executives, adverse changes in economic and political policies of the PRC government, inflation in China, risks and uncertainties associated with PRC laws and regulations with respect to the ownership structure of Trip.com Group’s affiliated Chinese entities and the contractual arrangements among Trip.com Group, its affiliated Chinese entities and their shareholders, and other risks outlined in Trip.com Group’s filings with the U.S. Securities and Exchange Commission. All information provided in this press release and in the attachments is as of the date of the issuance, and Trip.com Group does not undertake any obligation to update any forward-looking statement, except as required under applicable law.

About Non-GAAP Financial Measures

To supplement Trip.com Group’s unaudited condensed consolidated financial statements presented in accordance with United States Generally Accepted Accounting Principles (“GAAP”), Trip.com Group uses Non-GAAP financial information related to product development expenses, sales and marketing expenses, general and administrative expenses, income from operations, operating margin, net income attributable to Trip.com Group’s shareholders, and diluted earnings per ordinary share and per ADS, each of which (except for net commission earned) is adjusted from the most comparable GAAP result to exclude the share-based compensation charges recorded under ASC 718, “Compensation-Stock Compensation” and its share-based compensation charges are not tax deductible, and fair value changes of equity securities investments and exchangeable senior notes, net of tax, recorded under ASU 2016-1. Trip.com Group’s management believes the Non-GAAP financial measures facilitate better understanding of operating results from quarter to quarter and provide management with a better capability to plan and forecast future periods.

Non-GAAP information is not prepared in accordance with GAAP and may be different from Non-GAAP methods of accounting and reporting used by other companies. The presentation of this additional information should not be considered a substitute for GAAP results. A limitation of using Non-GAAP financial measures is that Non-GAAP measures exclude share-based compensation charges and fair value changes of equity securities investments and exchangeable senior notes that have been and will continue to be significant recurring expenses in Trip.com Group’s business for the foreseeable future.

Reconciliations of Trip.com Group’s Non-GAAP financial data to the most comparable GAAP data included in the consolidated statement of operations are included at the end of this press release.

About Trip.com Group Limited

Trip.com Group Limited (Nasdaq: TCOM) is a leading one-stop travel service provider consisting of Trip.com, Ctrip, Skyscanner, and Qunar. Across its platforms, Trip.com Group enables local partners and travelers around the world to make informed and cost-effective bookings for travel products and services, through aggregation of comprehensive travel-related information and resources, and an advanced transaction platform consisting of mobile apps, Internet websites, and 24/7 customer service centers. Founded in 1999 and listed on Nasdaq in 2003, Trip.com Group has become one of the largest travel companies in the world in terms of gross merchandise value.

For further information, please contact:

Investor Relations

Trip.com Group Limited

Tel: +86 (21) 3406 4880 X 12229

Email: iremail@trip.com

Trip.com Group Limited

Unaudited Consolidated Balance Sheets

(In millions, except share and per share data)

Trip.com Group Limited

Unaudited Consolidated Statements of Comprehensive Income

(In millions, except share and per share data)

The fair value income of RMB710 million in the quarter ended September 30, 2020 represents an equity securities investments fair value income of RMB1,669 million, net of tax of RMB75 million, and the exchangeable senior notes fair value loss of RMB884 million.

Trip.com Group Limited

Reconciliation of GAAP and Non-GAAP Results

(In millions, except % and per share data)

Notes for all the condensed consolidated financial schedules presented:

Note 1: The conversion of Renminbi (RMB) into U.S. dollars (USD) is based on the certified exchange rate of USD1.00=RMB6.7896 on September 30, 2020 published by the Federal Reserve Board.