Route guide

Cascade to Colombo (SEZ-CMB): Nonstop Upgrade & Award Space

Air Seychelles and X1 fly nonstop from Cascade (SEZ) to Colombo (CMB) just twice a week. With so few departures, each one carries the only premium seats on the route that day. 2LNR tracks confirmed upgrade and award space on all of them, so a rare opening doesn't slip past you.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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2
Nonstop flights a week
1,869 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every SEZ to CMB departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for Cascade to Colombo to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each SEZ to CMB departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See SEZ to CMB on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Cascade to Colombo nonstop

Carriers operating SEZ to CMB nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • Air Seychelles
  • X1
See SEZ to CMB on the interactive map →

Frequently asked questions about SEZ to CMB

How far is Colombo from Cascade?
SEZ to CMB covers about 1,869 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from SEZ to CMB?
Air Seychelles and X1 fly the route nonstop. 2LNR tracks confirmed upgrade and award space on both of them.
How often does SEZ to CMB operate?
The nonstop currently runs twice a week. Thin schedules like this change by season, and an alert will catch anything added.
How do I check upgrade or award availability on SEZ to CMB?
Open the SEZ to CMB calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Cascade to Colombo route, and 2LNR will notify you when space opens. It's free to start.

Never miss SEZ to CMB upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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