Seyrio

Found your flight?
We’ll watch the price.

You choose the flight. We watch the fare and email you when an eligible lower price is observed.

Watch a flight

Trip type
Route
Type an airport name, city or IATA code, then choose a suggestion.
Type an airport name, city or IATA code, then choose a suggestion.
Travel dates

Otherwise, we’ll include flights with up to 1 stop.

1 adult · Economy

We’ll email you to confirm and send price updates.

By continuing, you agree to Seyrio’s Terms of Use and acknowledge the Privacy Policy.

How long should we watch your flight?

Every plan includes the same price-checking frequency. Choose how long you’d like us to monitor.

Monitoring period
1 dayFree24 hours total monitoringNo payment needed
Recommended3 days£1.9972 hours total monitoringOne-time payment
7 days£3.99168 hours total monitoringOne-time payment

Every plan includes

  • Price checks planned every 4 hours
  • Eligible price alerts
  • Recorded price history

Some checks may not return a price. A lower fare isn’t guaranteed.

Paid plans are available to UK customers only.
No subscription or automatic renewal.

Historical monitored-market observations

Historical observation windows containing a fare below the starting observed fare.

24 hours
66%
72 hours
83%
168 hours
91%

Based on 8,348 overlapping observation windows across 22 curated flight-price series for 26 Dec 2026–4 Jan 2027. Historical collection cadence differed from private Watches.

Historical results from monitored flight markets, not predictions for your trip or customer savings. Methodology

Next, confirm your trip by email.

Email confirmation required

ILLUSTRATIVE EXAMPLE

MAD SAW

Madrid → Istanbul

One way

PRICE DROP OBSERVED

Previous observed fare

€120

Lower observed fare

€90EUR

25% lower than the earlier observed fare.

Price drop alert

An email notification example.

Observed fares are not live booking quotes.

  • No account required
  • Free 24-hour option
  • You book independently
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How Seyrio works

  1. Choose your flight

    Select your route and travel dates.

  2. We monitor

    Price checks are planned every 4 hours.

  3. You decide

    Review observed prices and book with your preferred provider.

Real observations · Public curated searches

See Seyrio in action

Recorded fares for a defined trip, over time. Historical observations, not currently bookable prices.

Christmas Watches

Select a market to view its price history

Accepted round-trip fare observations for active curated markets. Choose a row to display its exact seven-day history.
ROUTEMARKETSIGNALLAST OBSERVEDOBSERVED

No recent market observations to display. You can still start a Watch.

ROUND TRIP · 1 ADULT · ECONOMY

Price History

Recent observed prices will appear here when a market is available.

See a real Paris–New York flight price history →

What we observed across monitored flight markets

In our historical flight-price observations, longer monitoring windows more often contained a fare below the starting observed price.

24 hours

66%

Historical observation windows containing a fare below the starting observed fare.

72 hours

83%

Historical observation windows containing a fare below the starting observed fare.

168 hours

91%

Historical observation windows containing a fare below the starting observed fare.

Based on 8,348 overlapping observation windows across 22 curated flight-price series for 26 Dec 2026–4 Jan 2027. Historical collection cadence differed from private Watches.

Historical results from monitored flight markets, not predictions for your trip or customer savings.

How we measured these historical windows

A day in flight prices

Here’s what happened to prices in Seyrio’s historical observations.

24.6%Cheaper
47.6%Similar
27.7%More expensive

3,678 same-market comparisons · Similar = price change within ±1%

Source: Seyrio. Historical observations, not a prediction for your flight.