| Average data delay | Freshness gain vs once-daily | |
|---|---|---|
| Delivery frequency | ||
| 1x per day | ||
| 2x per day | ||
| 4x per day | ||
| 6x per day | ||
FILE-BASED SCHEDULE DATA
Schedules delivery, your way
OAG's complete global airline schedule, delivered as a file. Trusted, validated data from the world's leading aviation intelligence provider, on the delivery schedule your operations depend on.
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Schedules data · live
329,400
Total schedule updates in the last 2-hour window
32,200
New flights added
20,900
Flights deleted
71,800
Arrival or departure time changes
–:––:––
Until next refresh
Schedules data · live
329,400
Total schedule updates in the last 2-hour window
–:––:––
Until next refresh
The schedule data you rely on
OAG Files gives every team the schedule data they need, in the format that fits how they work, at the frequency your operations require.
Act on what's happening
Stale schedule data means decisions built on yesterday's network. Keep your teams and systems aligned with what carriers are operating now, so every decision is grounded in reality.
Your format
supported
Receive the complete global schedule in the format your systems are built to process. OAG's team works with you at every stage to get you up and running.
A complete picture
Every team works from the same complete, consistent source: the global schedule database that powers aviation's most operationally critical organisations.
Delivery you can depend on
Files arrive on time and on the schedule your systems are built around. Consistent delivery means your downstream processes never have to wait.
The cost of working from stale schedules
Aviation schedule data is not static. Every two hours, thousands of flight records are amended. Select a data age to see how many changes you would be working without.
329,400
Schedule updates you would have missed
32,200
New flights added
20,900
Flights deleted
71,800
Arrival or departure time changes
With 2-hour-old data: you are working with the most current schedule intelligence available.
MULTIPLE DAILY DELIVERIES
SSIM+
The SSIM format you rely on, now updated throughout the day
Schedule changes don't wait for delivery windows. When carriers adjust routes, change capacity or cancel services across the day, teams running on once-daily SSIM are making decisions on data that is already out of date. With SSIM+, you receive the same IATA-compliant SSIM your systems already process, up to six times a day, with OAG's team working alongside yours at every stage of the transition.
Best for: Airlines, GDSs, reservation systems, airports, ground handlers, and operational partners whose workflows are built around SSIM and need schedule changes reflected throughout the day, without changing how they receive or process the data.
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Keep every system current with the latest carrier schedule
Minimise the time your teams spend working with outdated schedule information. With up to six OAG-validated deliveries per day and Ad Hoc Schedule Messages (ASMs) included as standard, every carrier schedule change reaches your systems as it happens.
Move to SSIM+ with OAG's expertise at every stage
Transition to higher-frequency SSIM delivery with expert guidance from initial setup and validation through to go-live. OAG works directly alongside your technical and operations teams throughout, so your systems and teams are ready before the switch is made.
MULTIPLE DAILY DELIVERIES
WDF+
The customisable global schedule file your teams can build on
Global airline schedules change throughout the day. For teams whose pipelines, products and analysis depend on accurate schedule data, a once-daily file means every decision between deliveries is already out of date by the time it is made. With WDF+, you can access every carrier, route, and market in a configurable schedule file your teams can ingest and build on directly, delivered up to six times a day, so every file reflects the most current state of the global schedule.
Best for: Data and engineering teams across travel technology, airlines, airports, competitive intelligence, connection builders, cargo and logistics, and government and operational organisations who need OAG's complete global schedule dataset to power automated pipelines, analysis, or operational decisions.
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Compete on intelligence others don't have
Make commercial and competitive decisions based on what is happening throughout the day. With WDF+ built on OAG's Metis platform and Ad Hoc Schedule Messages (ASMs) included as standard, unplanned schedule changes are captured and delivered as carriers file them.
Run capacity analysis on a complete global dataset
Get seat capacity data across every carrier and route. With OAG's Predicted Seats model, every delivery includes a seat estimate for carriers that don't publish seat data directly, with no gaps in your analysis.
Ingest schedule data that's easy to read, filter and build on
Receive every flight record in a single row with every attribute included, ready to query and build on directly. Configure scope by geography, airline, or airport, and select only the columns your teams need.
Choose your delivery frequency
Both WDF+ and SSIM+ are available at the same frequency tiers. The more often files are delivered, the less time your systems spend running on a schedule that has already changed.
WDF
OAG's complete global flight schedule in a column-oriented flat file, where every flight sits on a single line with all its attributes.
Configure it to the markets, airlines and columns your teams need.
- Column-oriented flat file - every flight on a single line, readable and ready to ingest
- Full file or changes only - complete file each cycle or incremental updates
- Configurable scope - filter by geography, airline, airport, or other values
- FTP and SFTP delivery - via the method your systems already use
SSIM
OAG's global airline schedule in the IATA-standard format trusted across the industry, delivered on the timetable your operations run to.
When your systems are already built to process SSIM, what matters is the quality of the data inside it.
- Standard IATA SSIM format - fully compliant, processed by your existing systems as-is
- Flexible delivery cadence - daily, twice-monthly, or less frequent
- Full file or delta - complete file each cycle, or only what has changed
- FTP and SFTP delivery - reliable delivery via your existing transfer infrastructure
For every team that runs on airline schedules
OAG Files is used across the organisations that run on airline schedules. Here's how different teams put it to work.
Travel technology
Keep booking engines, search tools, and passenger-facing products aligned with the latest carrier schedules. The sooner your product reflects a change, the better the experience for the customer using it.
Airlines
Make network planning, competitive benchmarking, and codeshare monitoring decisions on a dataset that reflects what carriers are actually operating, across every market you care about.
Airports
Ground operations run on accurate schedules data. Keep staffing, resources and equipment aligned with what is arriving, updated as the schedule changes across the day.
Connection builders
Connection logic is only as reliable as the schedules data behind it. Build and maintain itinerary tools on a complete, structured dataset with seat data across all carriers and updates that reflect viable connections as they change.
Cargo and logistics
Time-sensitive shipments depend on accurate schedules data. Integrate current carrier schedules into routing and capacity systems, with update frequency matched to the cost of getting it wrong.
Data and competitive intelligence
Run competitive and market analysis on the complete global schedules dataset, with seat capacity and ASMs included, at whatever cadence your reporting cycle requires.
Frequently asked questions
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What is the difference between WDF and WDF+?
WDF delivers OAG's complete global schedule as a flat, column-oriented file at a standard delivery cadence. WDF+ adds higher-frequency delivery of up to six times a day, with ASMs and Predicted Seats included as standard. The format is the same; WDF+ adds frequency, freshness, and richer data.
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What is the difference between SSIM and SSIM+?
SSIM delivers OAG's validated schedules data in the standard IATA SSIM format, on the timetable your operations run to. SSIM+ delivers the same format up to six times a day, with ASMs included as standard. The format, validation, and downstream processing are identical; the difference is delivery frequency and the infrastructure behind it.
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What is the difference between WDF+ and SSIM+?
Both deliver OAG's global schedules data up to six times a day on the same Metis platform. WDF+ is a flat, column-oriented file designed for teams that ingest, query, and build on schedule data directly. SSIM+ delivers the same frequency in the IATA-standard SSIM format, for teams whose systems already process SSIM.
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How much fresher is the data at higher frequency?
With once-daily delivery, schedule changes are reflected with an average 12-hour delay. At 2x per day that falls to approximately 6 hours, at 4x to approximately 3 hours, and at 6x to approximately 2 hours, which is 83% fresher than once-daily delivery.
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What are Ad Hoc Schedule Messages (ASMs)?
Ad Hoc Schedule Messages (ASMs) capture schedule changes filed outside the regular IATA season: route additions, capacity adjustments, and cancellations that carriers make after the season schedule is set. ASMs are included as standard in every WDF+ and SSIM+ delivery.
"Live" schedule change figures on this page are illustrative, based on three months of OAG schedule updates (June–August 2026) averaged across each time window. Actual numbers vary.