The Cheapflightsfares app rarely allows flight check-in. The reason is Cheapflightsfares sources airline deals but does not book flights. Therefore, check-in is handled by the airline, not the booking agent.
To check-in for your flight, use these methods:
Most airlines offer online check-in on their apps or websites. Find your airline's app or website. Find "Manage My Booking" or "Check-in" and follow the instructions. You may need your booking reference number or confirmation email to finish.
Self-service airport kiosks let you check in for your flight at many airports. Airport airlines' logos are displayed on these kiosks.
If online or kiosk check-in isn't possible, you can check in at the airline's airport counter. You should arrive early to avoid long lines, especially during busy travel times.
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