What is the cheapest month to fly from Colorado Springs to Dulles?

Based on current 6-month forward fare data, October 2026 is the cheapest month to fly from Colorado Springs (COS) to Dulles (IAD), with fares starting from $220.

What is the lowest current fare from COS to IAD?

The lowest currently-listed fare from Colorado Springs (COS) to Dulles (IAD) is $220 on 2026-10-28.

Is there a direct flight from Colorado Springs to Dulles?

There is currently no non-stop service from COS to IAD. Most travellers connect through a hub airport. See our route page for current stopover options.

Cheap flights from Colorado Springs to Dulles

Cheapest current fares: $220 in October 2026 on connecting flights.

Last updated August 6, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Colorado Springs (COS) to Dulles (IAD). Refreshed daily.

Colorado Springs (COS) → Dulles (IAD)

October 2026 $220

Frequently asked questions

What is the cheapest month to fly from Colorado Springs to Dulles?

Based on current 6-month forward fare data, October 2026 is the cheapest month to fly from Colorado Springs (COS) to Dulles (IAD), with fares starting from $220.
What is the lowest current fare from COS to IAD?

The lowest currently-listed fare from Colorado Springs (COS) to Dulles (IAD) is $220 on 2026-10-28.
Is there a direct flight from Colorado Springs to Dulles?

There is currently no non-stop service from COS to IAD. Most travellers connect through a hub airport. See our route page for current stopover options.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.