# Denver (DEN) to Seattle (SEA) business class award flights

Source: https://miles.zone/routes/den-sea
Data updated: 2026-10-09T22:11:27.484Z
Cash amounts are in US dollars.

Fewest points: 27,000 miles plus $6 on United Airlines through LifeMiles, departing 2026-10-27.

## Every program and airline that can book it, next 60 days

| Airline | Program | Points | Cash on top | Routing | Departs | Checked |
| --- | --- | --- | --- | --- | --- | --- |
| United Airlines | [LifeMiles](https://miles.zone/programs/lifemiles) | 27,000 miles | $6 | via SFO | 2026-10-27 | 9 Oct 2026, 22:11 UTC |

## Route facts

Over the next 60 days we hold business class seats from Denver to Seattle on 4 of the 4 departure days we have checked so far (56 days are not checked yet), through 1 program. These figures are counted from the seats stored for those dates, not from a price history; the typical day is the median of each day's cheapest seat.

| Program | Days with space | Lowest | Typical day | Cash on top |
| --- | --- | --- | --- | --- |
| [LifeMiles](https://miles.zone/programs/lifemiles) | 4 of 4 checked | 27,000 miles | 27,000 miles | $6 to $58 |

Nonstop seats on United Airlines.

## How to book it

1. [LifeMiles](https://miles.zone/programs/lifemiles) books on lifemiles.com: sign in there, search DEN to SEA in business class on a date with space, and pay in miles with the cash on top (from $6).

MilesZone finds the seat; it does not book it or take payment.

## More routes from Denver

- [London (LHR)](https://miles.zone/routes/den-lhr)
- [London (LGW)](https://miles.zone/routes/den-lgw)
- [Dallas (DFW)](https://miles.zone/routes/den-dfw)
- [Phoenix (PHX)](https://miles.zone/routes/den-phx)
- [Charlotte (CLT)](https://miles.zone/routes/den-clt)
- [Portland (PDX)](https://miles.zone/routes/den-pdx)
- [San Diego (SAN)](https://miles.zone/routes/den-san)
- [Boise (BOI)](https://miles.zone/routes/den-boi)
- [Las Vegas (LAS)](https://miles.zone/routes/den-las)
- [Bellingham (BLI)](https://miles.zone/routes/den-bli)
- [Burbank (BUR)](https://miles.zone/routes/den-bur)
- [Wenatchee (EAT)](https://miles.zone/routes/den-eat)

## More routes to Seattle

- [Paris (CDG)](https://miles.zone/routes/cdg-sea)
- [Amsterdam (AMS)](https://miles.zone/routes/ams-sea)
- [Dublin (DUB)](https://miles.zone/routes/dub-sea)
- [Edinburgh (EDI)](https://miles.zone/routes/edi-sea)
- [Frankfurt (FRA)](https://miles.zone/routes/fra-sea)
- [London (LHR)](https://miles.zone/routes/lhr-sea)
- [Manchester (MAN)](https://miles.zone/routes/man-sea)
- [Munich (MUC)](https://miles.zone/routes/muc-sea)
- [Barcelona (BCN)](https://miles.zone/routes/bcn-sea)
- [Madrid (MAD)](https://miles.zone/routes/mad-sea)
- [Doha (DOH)](https://miles.zone/routes/doh-sea)
- [Dubai (DXB)](https://miles.zone/routes/dxb-sea)