Stop overpaying
for flights.

Forward your booking confirmation. Slipfare tracks the price — cash and award flights — and alerts you when it drops so you can rebook and pocket the difference.

Forward confirmations to track@slipfare.com

No app to install. No credit card required.

Slipfare
ORD → SFO
Price dropped!
Apr 12 · United · UA 2451 · Economy
Paid
$248
Current
$189
Savings
−$59
SEA → LAX
Apr 20 · Alaska · AS 1182 · Economy
Paid
$156
Current
$156
Diff
$0
DEN → JFK
May 3 · United · UA 448 · Premium Economy
Paid
$312
Current
$347
Diff
+$35

How It Works

1

Forward your confirmation

Send any airline booking email to track@slipfare.com. First email? It creates your account automatically.

2

AI extracts the details

Our AI parses the email and pulls out routes, dates, cabin, and price — handles round-trips, connections, and award bookings.

3

Get notified when the price drops

We check fares via Google Flights and seats.aero multiple times per day. Price drop? You'll know instantly.

Email-to-Track

Forward an email. That's it.

No forms. No app to download. Forward your airline confirmation to track@slipfare.com and your flight is tracked in seconds.

  • AI parses any airline's confirmation format
  • Handles round-trips, connections, and multi-passenger bookings
  • Detects cash and award bookings automatically
  • First email creates your account — zero friction
To: track@slipfare.com
Fwd: Your Flight Confirmation — UA 2491
UA
SFO → JFK
UA 2491 · Economy · Apr 15
Price paid
$287
Tracking started · Checking every 6 hours
Award Flight · Aeroplan
ORD → NRT
UA 881 · Polaris Business
You paid
88,000 pts
Mar 1
88,000
Mar 8
80,000
Mar 15
68,000
Save 20,000 pts/ticket -23%
Award Flight Tracking

Track points and miles, not just dollars.

Powered by seats.aero, Slipfare monitors award availability across 24+ loyalty programs. When the mileage price drops, you'll know.

United MileagePlus
Aeroplan
AAdvantage
Delta SkyMiles
Alaska Mileage Plan
20+ more programs
Alternative Flights

Find a better deal — in cash or points.

Enable alternative search and Slipfare looks for cheaper options on nearby dates, different times, or other airlines. It even compares across payment types — showing award alternatives for cash flights and cash alternatives for points bookings.

  • Search up to 3 days around your departure
  • Filter by airline, stops, time of day, and duration
  • Compare cash vs. points with cents-per-point valuation
  • Get a clear recommendation: use points, pay cash, or keep your booking
Alternatives for SFO → JFK 3 cheaper
UA 2482 · Apr 16
7:30 AM · Nonstop · 5h 22m
$219
−$68
AA 178 · Apr 15
2:15 PM · Nonstop · 5h 35m
$244
−$43
Award alternatives
vs $287 cash paid · baseline 1.20¢/pt
UA 881 · Apr 15
Aeroplan · 18,500 pts
1.41¢/pt
Use points
UA 881 · Apr 16
MileagePlus · 22,000 pts
1.19¢/pt
Keep cash

Everything else you'd expect

📉

Price Drop Alerts

Notifications via email, push, or Pushover when a fare drops below what you paid.

📊

Price History Charts

See how fares fluctuate over time with per-flight price history graphs.

🔄

United Trip Sync

Import your booked United flights directly — no manual entry needed.

✈️

Any Airline

Track flights on United, American, Delta, Alaska, Southwest, JetBlue, and more.

🔗

Direct Booking Links

One-click links to rebook on Google Flights or the airline's site when prices drop.

⚖️

Points vs. Cash

Set your cents-per-point baseline and get a clear recommendation: use points, pay cash, or keep your booking.

Simple pricing

Start free. Upgrade when you need more flights or faster checks.

Free
$0 /mo
  • 3 active flights
  • Price checks every 24 hours
  • Email-to-track import
  • Price drop alerts
Get Started
Most Popular
Pro
$5 /mo
  • 20 active flights
  • Price checks every 6 hours
  • Email-to-track import
  • Award flight tracking via seats.aero
  • Alternative flight search
  • Points vs. cash comparison
  • Price drop alerts
Get Started
Ultra
$10 /mo
  • Unlimited flights
  • Price checks every 6 hours
  • Email-to-track import
  • Award flight tracking via seats.aero
  • Alternative flight search
  • Points vs. cash comparison
  • Price drop alerts
Get Started

Start tracking in seconds.

Forward your next booking confirmation to track@slipfare.com and we'll do the rest. No app to install, no credit card required.

Get Started Free →