Turbulence Forecast
Will your flight be bumpy? Forecasts, warnings and pilot reports along your route, in plain English, on a map.
Check your route →Track any flight live, with weather radar and the likely landing runway.
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Live positions, gates and radar, worldwide. Replay a flight from takeoff and see the likely landing runway.
Checking the FAA airport status…
Airline, alliance and card lounges at 87 airports, by terminal and nearest gate. All airports
What each booking class letter earns, for 56 airlines.
See the miles and status credit a ticket earns, from the airline’s own rules. All calculators
Map © Esri, OpenStreetMap · Radar NOAA NEXRAD via IEM
- Free, no account neededFlight tracking, fare class charts and miles calculators.
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- Real-time airport dataDelays, ground stops and runways in use.
Delays right now
US airport delays and ground stops
Airport Lounge Finder
740 airline, alliance and card lounges at 87 airports worldwide, sorted by terminal, concourse and nearest gate, with a map.
Find a lounge →Before you book
Fare class charts and miles calculators by airline
Pick your airline: its fare chart says what each booking class letter earns, and links to its miles calculator.
What does my fare class earn?
Your fare class is the one-letter booking code on your ticket or receipt, such as T or K.
Delta Air Lines
American Airlines
United Airlines
Southwest Airlines
Alaska Airlines
JetBlue
Air Canada
British Airways
Lufthansa
Air France
Qatar Airways
Singapore Airlines
Show 44 more airlinesShow fewer airlines
Aegean Airlines
Aerolineas Argentinas
Aeromexico
Air China
Air Europa
Air India
Air New Zealand
Allegiant Air
ANA
Avianca
Breeze Airways
Cathay Pacific
China Airlines
China Eastern
Copa Airlines
Croatia Airlines
Ethiopian Airlines
Etihad Airways
EVA Air
Finnair
Frontier Airlines
Hawaiian Airlines
Iberia
ITA Airways
Japan Airlines
Kenya Airways
KLM
Korean Air
LOT Polish Airlines
Malaysia Airlines
Qantas
Royal Air Maroc
Royal Jordanian
SAS
Shenzhen Airlines
South African Airways
SriLankan Airlines
Sun Country Airlines
TAP Air Portugal
Thai Airways
Turkish Airlines
Vietnam Airlines
Virgin Atlantic
Xiamen Airlines
Partner airline earning:American AAdvantage Delta SkyMiles United MileagePlus Alaska Atmos Rewards Aeroplan Flying Blue Flying Club British Airways Club
Compare fare classes Airline alliances All fare charts All calculators
Day of travel
Turbulence, upgrade priority and airline contacts
Delta Upgrade Priority
See where you stand on Delta’s upgrade list, and track your Million Miler status.
Check priority →Airline Contact Numbers
Phone numbers and official help links for 29 airlines, when a flight goes wrong.
Find a number →More tools
Pilots and airports
- NOTAMs in plain English, and NOTAM pages for 149 US airports
- Airport weather: METAR, TAF and runway winds
- Airport information: codes, weather and radar for 4,700 airports
- Great circle distance between any airports
- US airport charts: FAA diagrams and charts
- Gateside by TSA PreCheck: past security without a boarding pass
AI assistants and developers
- Ask Claude or ChatGPT what a fare class earns, from cwsi.net’s charts
- Use in Slack: type /cwsi to look up a fare class
- Developer API: fare classes, calculators, distances and lounges as JSON
About cwsi.net
cwsi.net began when a handy Delta fare class spreadsheet vanished from the web and we built a better one. It has grown into charts, calculators and travel tools for 56 airlines. Read our story
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