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. Free, no sign-up needed. Create a free account to replay any flight.
e.g. UA945, ORD or Delta. Replay any flight from takeoff.
Checking the FAA airport status…
Airline, alliance and card lounges at 106 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
- Replay any flight, freeA free account replays a flight from takeoff and keeps your recent flights.
- Real-time flights and airportsLive flight tracking, delays, ground stops and runways in use.
- Calculators and fare chartsMiles calculators and fare class charts for the airlines you fly.
- Weather and NOTAMsMETAR, TAF and US NOTAMs in plain English, updated every few minutes, with the best runway for the wind.
Your trips
Forward your booking. We’ll watch the flight.
Stop refreshing the airline app. cwsi.net follows your flights and tells you what changed.
- Forward your confirmation emailSend it to [email protected] and your flights appear in My trips.
- Get a heads-up before you goDeparture time, gate and delays, by email or in the app.
- Land knowing your next gateWhen you land: your gate, your connection’s gate and the time you have, with a map of the way and the lounges along it.
- Keep family in the loopUp to 5 people (10 with Gold) hear before you leave and when you land. No app needed for them.
Trip updates are part of Silver and Gold. Cancel any time.
Delays right now
US airport delays and ground stops
Airport Lounge Finder
843 airline, alliance and card lounges at 106 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, gate maps and airline contacts
Find your gate
Your gate pinned on the airport diagram, with the walk to your connection and the lounges on the way.
Open an airport →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
- Gateside by TSA PreCheck: past security without a boarding pass
Delta flyers
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
Membership
Free to use. More when you want it.
Free account
$0
No card needed
Live tracker and flight replay
- Live flight tracker, delays, lounges and fare charts
- Replay a flight up to 3 hours after it lands
- Your recent flights kept
- Fewer ads
Silver
$17.99 a year
or $2.99 a month · 7 days free for new Silver members
Trip alerts, family updates, 30-second tracking, no ads
- My trips with gate, delay and Landed alerts
- Friends and family updates for 5 people
- Tracking that refreshes every 30 seconds
- Replay up to 24 hours after landing, and your full search history
- No ads
Best value
Gold
$29.99 a year
or $5.99 a month
About $1 a month more than Silver
Everything in Silver plus charts and private aircraft
- Everything in Silver
- IFR and VFR charts on the map
- Private and business aircraft, with their flight history
- Tracking that refreshes every 15 seconds
- Friends and family for 10 people
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