What is the Origin & Destination Survey Expansion (40% sample)?
Answer
As of July 2025, BTS will be making significant changes to the Airline Origin & Destination Survey (DB1B), including requiring carriers to report monthly, rather than quarterly, and to sample 40% of their tickets sold instead of 10%. You can find more information about these changes, including FAQs, by clicking here.
For questions about the new filing requirements, please contact oai.od40.support@dot.gov.
The pre-July 2025 O&D Survey data will continue to be available in TranStats.
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